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WO2011026331A1 - Procédé et appareil de sélection de combinaison de formats de transport de canaux dédiés améliorée - Google Patents

Procédé et appareil de sélection de combinaison de formats de transport de canaux dédiés améliorée Download PDF

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Publication number
WO2011026331A1
WO2011026331A1 PCT/CN2010/072072 CN2010072072W WO2011026331A1 WO 2011026331 A1 WO2011026331 A1 WO 2011026331A1 CN 2010072072 W CN2010072072 W CN 2010072072W WO 2011026331 A1 WO2011026331 A1 WO 2011026331A1
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Prior art keywords
tfc
modulation mode
code rate
determining
modulation
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PCT/CN2010/072072
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English (en)
Chinese (zh)
Inventor
高翔
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中兴通讯股份有限公司
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Publication of WO2011026331A1 publication Critical patent/WO2011026331A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/02—Selection of wireless resources by user or terminal

Definitions

  • the present invention relates to the field of mobile communications, and more particularly to a method for high speed uplink packet access.
  • HSUPA High Speed Uplink Packet Access
  • E-TFC E-DCH Transport Format Combination
  • HSUPA is a further enhancement and evolution of the time division-Synchronous Code Division Multiple Access (TD-SCDMA) system in the wireless part, which can greatly improve the uplink capacity and transmission rate.
  • TD-SCDMA time division-Synchronous Code Division Multiple Access
  • HSUPA has two ways of data transmission: Base station (NodeB) based scheduling transmission
  • the Media Access Control (MAC) layer provides a logical channel (LC, Logical Channel) for the RLC (Radio Link Control) to carry data of the RLC layer;
  • the physical layer provides a transport channel (TrCH, Transport Channel) for the MAC layer to carry data of the MAC layer.
  • LC Logical Channel
  • TrCH Transport Channel
  • E-DCH Enhanced uplink dedicated channel
  • E-UCCH E-DCH Uplink Control Channel
  • E-UCCH and E-DCH are mapped to the same enhanced uplink physical channel, E-PUCH (E-DCH Physical Uplink Channel). That is, the dedicated user data channel E-DCH and its associated control channel E-UCCH multiplex the E-PUCH channel.
  • E-PUCH E-DCH Physical Uplink Channel
  • Transmission time of each E-DCH In TTI (Transmission Time Interval) one or more E-UCCHs are used to carry control information associated with uplink E-DCH service data.
  • TTI Transmission Time Interval
  • time slot for transmitting E-PUCH data
  • one user equipment UE transmits data through at most one E-PUCH.
  • the E-UCCH and TPC commands may or may not be included in an E-PUCH burst. If the E-UCCH is included in the E-PUCH burst, the TPC command is also sent together.
  • the UE implements the process of accessing the E-DCH and performs data transmission, including:
  • the UE initiates an E-DCH access request through the E-RUCCH channel.
  • the access request carries uplink control signaling and scheduling information related to accessing the E-DCH. After the UE accesses the E-DCH successfully, the information is not sent through the E-RUCCH channel until the HSUPA service ends.
  • the base station After receiving the access request sent by the UE, the base station allocates physical channel resources to the UE, including allocated resources such as power, code channels, and time slots.
  • the physical channel resource allocation information is notified to the UE through the E-AGCH channel.
  • the HSUPA uses the E-AGCH channel as the downlink physical channel and carries the physical channel resource allocation information, specifically the absolute E-DCH absolute grant control information. It is used to implement the fast scheduling based on the NodeB, and also carries the transmission for scheduling the E-PUCH. Power Control (TPC, Transmitter Power Control) and Synchronisation Shift (SS) commands.
  • TPC Transmitter Power Control
  • SS Synchronisation Shift
  • the UE receives the physical resource allocation information returned by the base station.
  • the UE receives and reads the physical resource allocation information returned by the base station from the E-AGCH channel.
  • the UE receives physical resource allocation information through the physical layer and forwards it to the MAC layer.
  • the UE transmits data using the allocated physical resources.
  • the UE transmits data information through the E-DCH channel, and transmits corresponding control through the E-UCCH. Information.
  • the UE needs to perform E-TFC selection (specifically in MAC implementation) to determine the appropriate MAC-e (MAC enhanced) protocol data unit (PDU) size, and perform data distribution and data assembly before passing the data.
  • E-TFC selection specifically in MAC implementation
  • PDU protocol data unit
  • the E-DCH channel transmits data.
  • the base station After receiving the data sent by the UE, the base station returns the ACK/NACK information to the UE according to the result of the data check.
  • the base station receives the data transmitted by the UE through the E-DCH channel, and the related control information transmitted through the E-UCCH channel, and then performs a Cyclic Redundancy Check (CRC) check on the received data. And corresponding ACK/NACK information is sent to the UE on the corresponding E-HICH channel according to the check result.
  • CRC Cyclic Redundancy Check
  • the ACK information is sent when the check is passed, otherwise, the NACK message is sent.
  • the UE determines to transmit new data or retransmit the transmitted data according to the received ACK/NACK information.
  • the control information in the E-UCCH channel is updated according to the ACK/NACK information carried therein to decide whether to transmit new data or retransmit data. Specifically, when an ACK is received, new data is sent; when a NACK is received, data needs to be retransmitted.
  • the UE After the UE receives the allocated physical resource information in step (4), the UE performs the E-TFC selection process, and does not provide a specific selection implementation method in the existing protocol. Selecting an appropriate E-TFC for data transmission is very important for data transmission between the UE and the base station. If the base station and the UE cannot determine the appropriate E-TFC, the transmission data decoding may fail, or even the system may not work properly. .
  • the difference between it and the scheduled transmission mode is only that the entity that provides the absolute authorization control information for the UE is different.
  • the configuration of the network side is specifically decoded by the radio resource management layer, and then provided to the MAC layer for the MAC layer to perform E-TFC selection. Therefore, the above problem also exists. Summary of the invention
  • Embodiments of the present invention provide a method and apparatus for selecting an enhanced dedicated channel transmission format set, which can quickly and efficiently determine a suitable enhanced dedicated channel transmission format set.
  • An enhanced method for selecting a dedicated channel transmission format set includes:
  • the user equipment calculates a code rate corresponding to each modulation mode of each E-TFC according to the authorization control information allocated by the network side;
  • An E-TFC set for data transmission is selected in the E-TFC set corresponding to each modulation mode.
  • An apparatus for selecting a dedicated channel transmission format set comprising:
  • a first code rate calculation module configured to calculate, according to the authorization control information allocated by the network side, a code rate corresponding to each modulation mode of each E-TFC;
  • a first determining module configured to determine a candidate E-TFC set corresponding to each modulation mode according to a code rate corresponding to each modulation mode of the E-TFC and radio resource configuration information allocated by the network side; a module, configured to determine, according to the authorization control information and the radio resource configuration information, a code rate corresponding to a maximum authorized transmit power allowed on each of the modulation modes allowed on the E-PUCH channel;
  • a second determining module configured to determine, according to a code rate corresponding to the maximum authorized transmit power, a subset of the candidate E-TFC set, as an E-TFC set corresponding to each modulation mode;
  • the encapsulating module is configured to select an E-TFC set for data transmission in the E-TFC set corresponding to each modulation mode.
  • the user equipment calculates a code rate corresponding to each modulation mode of each E-TFC according to the authorization control information allocated by the network side; Determining a candidate E-TFC set corresponding to each modulation mode by determining a code rate corresponding to each modulation mode and radio resource configuration information allocated by the network side; determining, on the E-PUCH channel, the authorization control information and the radio resource configuration information a code rate corresponding to the maximum authorized transmit power corresponding to each modulation mode, determining a subset of the candidate E-TFC set according to a code rate corresponding to the maximum authorized transmit power, as an E-TFC set corresponding to each modulation mode; An E-TFC set for data transmission is selected in the E-TFC set corresponding to each modulation scheme, and data is encapsulated by a modulation scheme corresponding to the selected E-TFC set.
  • the above method fully considers the resources allocated by the network side, and not only considers the authorization control information allocated by the base station, but also further considers the radio link configuration information configured by the RNC, so that the transmission format set selected by the user equipment is more reasonable and effective. Moreover, the method can quickly and reasonably determine an E-TFC set suitable for matching with the selected modulation mode for data transmission.
  • FIG. 1 is a flowchart of a method for selecting an enhanced dedicated channel transmission format set according to an embodiment of the present invention
  • FIG. 2 is a flowchart of a specific implementation of an E-TFC selection method according to an embodiment of the present invention
  • FIG. 4 is a flowchart of implementing a logical channel for determining data to be transmitted according to an embodiment of the present invention
  • FIG. 5 is a schematic structural diagram of an apparatus for selecting an enhanced dedicated channel transmission format set according to an embodiment of the present invention. Schematic diagram
  • FIG. 6 is a schematic diagram of a specific structure of an E-TFC selection apparatus according to an embodiment of the present invention.
  • the method for selecting an enhanced dedicated channel transmission format set provided by the embodiment of the present invention is used to perform E-TFC selection after the UE receives the authorization control information allocated by the network side. To achieve data distribution and assembly and send.
  • the above method is applicable to both the E-TFC selection process of the unscheduled transmission mode and the E-TFC selection of the scheduling transmission mode. The only difference is that the E-TFC chooses the source of the authorization control information to be used differently.
  • the method for selecting an enhanced dedicated channel transmission format set provided by the embodiment of the present invention is as shown in FIG. 1 , and the execution steps are as follows:
  • Step S1 The user equipment calculates a code rate corresponding to each modulation mode of each E-TFC according to the authorization control information allocated by the network side.
  • the total number of bits carried by the E-PUCH channel in each modulation mode is determined according to the authorization control information.
  • the quotient of the transport block size corresponding to each E-TFC and the total number of bits in each modulation mode is calculated separately, and the code rate corresponding to each modulation mode of each E-TFC is obtained.
  • Step S2 Determine a candidate E-TFC set corresponding to each modulation mode according to a code rate corresponding to each modulation mode of each E-TFC and radio resource allocation information allocated by the network side.
  • each of the calculated E-TFCs has a maximum code rate of 4ax and a minimum among the code rates corresponding to the modulation modes.
  • a code rate between 4 in and a candidate E-TFC set corresponding to each modulation mode is obtained.
  • Step S3 The user equipment determines, according to the authorization control information and the radio resource configuration information, a code rate corresponding to a maximum authorized transmission power corresponding to each modulation mode allowed on the E-PUCH channel.
  • the absolute grant value contained in the information determines the gain factor corresponding to the maximum authorized transmit power.
  • Step S4 Determine a subset of the candidate E-TFC sets according to the determined code rate corresponding to the maximum authorized transmission power corresponding to each modulation mode, as the E-TFC set corresponding to each modulation mode. Specifically include:
  • the E-TFC corresponding to each modulation mode is composed of E-TFCs in the candidate E-TFC set whose code rate is smaller than the code rate corresponding to the corresponding maximum authorized transmission power.
  • Step S5 Select one E-TFC set for data transmission in each E-TFC set corresponding to each modulation mode. Specifically include:
  • the transport block size corresponding to each E-TFC is used.
  • the E-TFC set in which the E-TFC corresponding to the largest transport block is located is selected for data transmission.
  • Step S6 The data is encapsulated by using a modulation mode corresponding to the selected E-TFC set.
  • a specific implementation flow of the channel transmission format set selection method As shown in FIG. 2, the steps are as follows: Step S10: The UE acquires the authorization control information and the radio resource configuration information allocated by the network side. The manner in which the UE obtains the authorization control information (also, the physical channel resource allocation information) is different in the scheduled transmission mode and the non-scheduled transmission mode.
  • the authorization control information is also referred to as absolute authorization control information.
  • the UE receives the absolute grant control information sent by the base station. Specifically: From E-AGCH (E-DCH Absolute Authorization Letter) The absolute authorization control information sent by the network side (base station) is received on the channel.
  • E-AGCH E-DCH Absolute Authorization Letter
  • the physical layer receives the absolute grant control information transmitted on the E-AGCH, and selects the absolute grant value, the code channel resource related information, the slot resource related information, and the E-UCCH number indication (ENI, E) to be used by the E-TFC.
  • Related information such as -UCCH Number Indicator is sent to the medium access control layer.
  • the UE receives corresponding authorization control information from the RNC.
  • the radio resource management layer receives the authorization control information allocated by the RNC on the network side for the UE, and selects the E-TFC to use the absolute authorization value, the code channel resource related information, the slot resource related information, and the E-UCCH number indication. Relevant information such as (ENI) is forwarded to the media access control layer.
  • absolute authorized power value indicates the maximum transmit power of each user equipment of the E-PUCH channel allowed by the base station, the power value ranges from 0 dB to 31 dB, and the minimum interval is ldB. For details, refer to 4.10 in 3GPP TS 25.222. Table 26 in Section 1.1. If the base station allocates a plurality of time slots within one subframe for the E-PUCH channel, each time slot uses the same absolute authorized power value.
  • CRRI Code Resource Related Information
  • Timelot Resource Related Information Indicates the time slot resource allocated by the base station to the E-PUCH, and uses 5 bits to represent the occupancy of TS1 to TS5.
  • E-UCCH number indication (ENI).
  • the media access control layer While obtaining the authorization control information, the media access control layer also obtains radio resource configuration information obtained by the radio resource management layer from the network side, for example: maximum allowed code rate, minimum allowed code rate, code rate and power gain under different modulation modes. Configuration information such as mapping between factors.
  • Step S11 The authorization control information received by the user equipment UE determines each optional The code rate of the E-TFC corresponding to each modulation method.
  • a list of E-TFCs is pre-configured in the UE of the user equipment.
  • the code rate corresponding to each modulation mode of each E-TFC is calculated according to the received authorization control information, which specifically includes:
  • the code rate can be calculated by the following formula:
  • the total number of bits carried by the E-PUCH channel is the total number of bits carried by the E-PUCH channel.
  • the total number of bits carried by the E-PUCH channel may be related to code channel resource related information (CRRI), time slot resource related information (TRRI), and E-UCCH number indication (ENI) included in the received authorization control information.
  • CRRI code channel resource related information
  • TRRI time slot resource related information
  • ENI E-UCCH number indication
  • the total number of bits carried in the E-DCH signaling can be calculated, and the inband control packet is subtracted from the total number of bits. Let the number of bits occupied, the value obtained.
  • the number of bits occupied by the inband control signaling includes: an E-UCCH number indication, a number of bits occupied by the TPC instruction, and the like. It can be calculated by the following formula:
  • R e ⁇ ⁇ (Ha + 1) ⁇ 2 where Ap A 2 is a constant related to the modulation mode
  • TS—Number is the number of slots occupied by the uplink transport channel (included in the slot resource related information);
  • SF is a spreading factor (included in the code channel resource related information);
  • ENI is an indication of the number of E-UCCHs.
  • the modulation method can generally include four-phase shift frequency keying (QPSK, Quaternary Phase Shift Keying) and hexadecimal quadrature amplitude modulation (16QAM).
  • QPSK Quadrature Phase Shift Keying
  • 16QAM hexadecimal quadrature amplitude modulation
  • the above spreading factor SF is also related to the modulation method.
  • mapping relationship with the authorization control information can be as shown in Table 1 below.
  • Step S12 Determine candidate E-TFC sets corresponding to the respective modulation modes according to the received radio resource configuration information and the code rate corresponding to each modulation mode of each E-TFC.
  • the code rate of each E-TFC in the candidate E-TFC set corresponding to each modulation mode is between the maximum code rate and the minimum code rate configured on the network side.
  • candidate E-TFC sets G and 1 and 6QAM modulation modes corresponding to the QPSK modulation mode can be obtained.
  • the code rates corresponding to the E-TFCs in the two sets all satisfy L min ⁇ ⁇ L x , and it can be said that the transport block size (S e or TB-Size ) corresponding to the E-TFC in the two sets satisfies ⁇ > ⁇ ⁇ 1 ⁇ . It should be noted that the calculated transport block size must fall within the range of the transport block size specified in the E-TFC table.
  • the code rate calculated by each E-TFC in the two modulation modes of QPSK and 16QAM is different, so when the candidate E-TFC set is determined by the maximum code rate and the minimum code rate, the candidates in the two modulation modes are used.
  • the E-TFCs contained in the E-TFC set are likely to be different. Since the determined candidate E-TFC set will be used for the slot and code channel resources allocated by the network side, the information such as the time slot and the code channel used in the above calculation must be consistent with the assigned authorization control information.
  • the scheduling mode is described by taking the scheduling mode as an example.
  • the E-TFC set and the C 2 determination process are similar to the scheduling mode except that the authorization control information is through higher layer signaling (for example: RB_SETUP message) ) specified, will not be described here.
  • Step S13 The user equipment determines, according to the authorization control information and the radio resource configuration information, a code rate corresponding to a maximum authorized transmission power corresponding to each modulation mode allowed on the E-PUCH channel. Specifically include:
  • the gain factor corresponding to the maximum authorized transmit power on the E-PUCH channel is determined according to the spreading factor and the absolute grant value in the code channel resource related information included in the grant control information.
  • the code rates corresponding to the maximum authorized transmit powers of the QPSK and 16QAM modulation modes are separately calculated, and the calculation process is the same, but different for different modulation mode parameters.
  • Step S14 Corresponding to the determined maximum authorized transmission power corresponding to each modulation mode
  • the code rate determines a subset of the candidate E-TFC sets as the E-TFC set corresponding to each modulation scheme. After the different modulation modes are determined, after determining the code rate corresponding to the maximum authorized transmission power, the candidate E-TFC set corresponding to each modulation mode is further restricted according to the dish; that is, the candidate E- for each modulation mode
  • the code rate corresponding to the TFC set and the maximum authorized transmit power comparing the code rate corresponding to each E-TFC in the candidate E-TFC set corresponding to the modulation mode and the code rate corresponding to the maximum authorized transmit power corresponding to the modulation mode the size of. as well as
  • the E-TFC corresponding to the modulation mode is composed of E-TFCs in the candidate E-TFC set whose code rate is less than the code rate corresponding to the maximum authorized transmission power.
  • the code rate of each E-TFC satisfies ⁇ ⁇ ⁇ 4, and it can be said that the determined E-TFC set corresponding to each modulation mode
  • the transport block size corresponding to each E-TFC satisfies L min x ⁇ ⁇ S e ⁇ ⁇
  • candidate E-TFC set G and 16QAM modulation mode candidate E-TFC corresponding to QPSK modulation scheme The set G 2 is further constrained to obtain an E-TFC set corresponding to the QPSK modulation scheme and an E-TFC set corresponding to the 16QAM modulation scheme.
  • the E-TFC set A and the E-TFC set 1) 2 are respectively a subset of the candidate E-TFC set G i and the candidate E-TFC set.
  • Step S15 Select an E-TFC set for data transmission in the E-TFC set corresponding to each modulation mode.
  • the E-TFC set in which the E-TFC corresponding to the largest transport block is located is selected for data transmission. If there is more than one E-TFC set corresponding to the E-TFC of the largest transport block, the E-TFC set corresponding to the modulation mode with the lowest transmit power is determined according to the transmit power required by each modulation mode. Data transmission E-TFC collection.
  • the set is selected as the E-TFC set for data transmission;
  • the set 1) 2 is selected as the E-TFC set for data transmission;
  • a set of required transmit powers is selected as the E-TFC set for data transmission. For example, if the transmission power required by the 16QAM modulation mode is low, the set corresponding to the 16QAM modulation mode is selected, otherwise the set corresponding to the QPSK modulation mode is selected for data transmission.
  • the E-TFC set corresponding to the modulation mode requiring a lower PE-PUCH (E-PUCH transmit power) should be selected as much as possible.
  • Step S16 The data is encapsulated by using a modulation method corresponding to the selected E-TFC set.
  • the QPSK modulation method corresponding to the set is used to encapsulate the data; when the selected set for data transmission is a set, then the selection is performed.
  • the 16QAM modulation method corresponding to the set ⁇ encapsulates the data.
  • the transport block size used by the UE to encapsulate the uplink data should not exceed the range of the transport block size corresponding to each E-TFC included in the selected E-TFC set. Effectively at this time It is ensured that the code rate corresponding to the E-TFC used by the UE is between the maximum code rate and the minimum code rate configured on the network side, so that the used code rate is effective for various modulation modes such as QPSK and 16QAM. , in accordance with the principles laid down in the agreement.
  • the new data is continuously sent; if the network side unsuccessful confirmation message is received, the data needs to be retransmitted.
  • the same E-TFC package data as the E-TFC used in the original data must be used. That is to say, when in the retransmission state, only the E-TFC with the same transmission block size as the initial transmission is in the supported state.
  • the method may further include:
  • Step S17 The step of determining a logical channel set of data to be transmitted according to a scheduling type of the current transmission time interval. Then, in step S16, the data to be transmitted in the logical channel set of the determined data to be transmitted is encapsulated by using a modulation mode corresponding to the selected E-TFC set.
  • step of determining the logical channel set of the data to be transmitted only needs to be performed before the execution of step S16, for example, may be performed before step S10, or after step S10, or after step S15, or in the middle. Execute at any time.
  • step S 13 is to determine a subset of the candidate E-TFC set according to the determined code rate corresponding to the maximum authorized transmit power, and the specific implementation process of the E-TFC set corresponding to each modulation mode is as shown in FIG. 3, including The following steps:
  • Step S131 Determine, according to the spreading factor and the absolute grant value included in the code channel resource related information, a gain factor corresponding to a maximum 4 authorized transmit power on the E-PUCH channel.
  • the transmit power of the E-PUCH channel can be calculated by the following formula:
  • p e — base is a closed loop power value maintained between the UE and the base station
  • L is the path loss, which can generally be obtained by monitoring and measuring the physical channel
  • A is the gain factor of the E-PUCH channel, and is related to the allocated E-PUCH physical resource (authorization control information), modulation mode, and hybrid automatic repeat request (HARQ) power offset.
  • HARQ hybrid automatic repeat request
  • the above d e is configured by the network side, and each time a TPC command sent by the network side is received, the certain value ⁇ " is increased or decreased. For example: After receiving the "up” command of the TPC, ⁇ is increased by ⁇ based on the original value. "; When the TPC "down” command is received, the -6 is reduced based on the original value.
  • the value of ⁇ " is configured by the upper layer.
  • the TPC command is transmitted by the E-AGCH channel; in the unscheduled transmission mode, the TPC command is transmitted by the E-HICH channel.
  • the transmit power of the E-PUCH reaches the maximum authorized transmit power; where ⁇ .
  • the absolute authorization value contained in the authorization control information that is, the absolute authorized power value carried by the E-AGCH channel; is the gain factor corresponding to the E-PUCH spreading factor.
  • Step S132 Determine a mapping relationship between the gain factor and the code rate according to the radio resource configuration information. Specifically include: According to a set of reference code rates specified by the network side, the radio resource configuration information includes a mapping table between the reference code rate and the reference power, a gain factor corresponding to the E-PUCH spreading factor, and a power of the hybrid automatic repeat request ( HARQ ). The offset value determines the mapping relationship between the gain factor and the code rate.
  • the radio resource configuration information includes a mapping table of reference rates and relative reference powers in the transmission, that is, a mapping table including a set of reference points.
  • the mapping table can be used to find the relative reference power corresponding to each reference code rate of the E-DCH.
  • the mapping table can be included in the E-TFCS information of the RB_SETUP message.
  • the network side specifies a set of specified reference maximum and minimum values in rate (related to modulation scheme) to determine the lower and upper limits given a minimum value interval ⁇ ⁇ ⁇ and then! By the following manner determine:
  • the minimum code rate satisfying the > ⁇ relationship is denoted as ⁇ .
  • the query radio resource configuration information includes a mapping table between the reference code rate and the reference power, and the relative reference power and A corresponding to the reference code rate and ⁇ !.
  • the normalized (each resource unit) gain factor can be expressed as the following formula (1):
  • the geometric meaning of the above formula is: Determine a line with ( ⁇ ' ⁇ ) and ( ⁇ , ⁇ ) as the endpoint, and the point on the line.
  • Step S133 Determine a code rate corresponding to the maximum authorized transmission power according to the determined mapping relationship between the gain factor and the code rate and the gain factor corresponding to the maximum authorized transmission power.
  • the code rate corresponding to the maximum authorized transmission power can be conveniently determined.
  • step S17 the step of determining the logical channel set of the data to be transmitted according to the scheduling type of the current transmission time interval. As shown in FIG. 4, the following steps are specifically included: Step S171: determining that the scheduling type in the current transmission time interval (TTI) is a scheduled transmission or a non-scheduled transmission.
  • TTI current transmission time interval
  • Step S172 Determine, according to the scheduling type of the current transmission time interval, a first logical channel set of the data to be transmitted that meets the determined scheduling type.
  • Step S173 Determine a logical channel with the highest priority among the first logical channel set.
  • the logical channel X with the highest priority among the logical channels in the first logical channel set is determined according to the priority order of the logical channels.
  • Step S174 Determine a MAC-d flow (MAC-d flow) to which the highest priority logical channel belongs.
  • a logical channel can only belong to one MAC-d stream, so there will only be one HARQ attribute.
  • Step S175 Determine a logical channel set of data to be sent.
  • Determining, according to the MAC-d flow to which the highest priority logical channel in the first logical channel set belongs, logical channel combination of the first logical channel set and the determined highest priority logical channel belonging to the same MAC-d flow A collection of logical channels that send data.
  • the highest priority logical channel in the first logical channel set A is the logical channel X
  • all logical channels belonging to the same MAC-d flow as the logical channel X are determined as logical channels of data to be transmitted.
  • an apparatus for selecting an enhanced dedicated channel transmission format set may be constructed, as shown in FIG. 5, including: The code rate calculation module 10, the first determination module 20, the second code rate calculation module 30, the second determination module 40, and the selection encapsulation module 50.
  • the first code rate calculation module 10 is configured to calculate a code rate corresponding to each modulation mode of each E-TFC according to the authorization control information allocated by the network side.
  • the first determining module 20 is configured to determine, according to the code rate corresponding to each modulation mode and the radio resource configuration information allocated by the network side of each E-TFC calculated by the first code rate calculation module 10, to determine corresponding to each modulation mode.
  • the second code rate calculation module 30 is configured to determine, according to the authorization control information and the wireless resource configuration information allocated by the network side, a code rate corresponding to the maximum authorized transmission power allowed on each of the modulation modes allowed on the E-PUCH channel.
  • the second determining module 40 is configured to determine, according to the code rate corresponding to the maximum authorized transmit power calculated by the second code rate calculation module 30, the candidate E-TFC set corresponding to each modulation mode determined by the first determining module 20
  • the subset is an E-TFC set corresponding to each modulation scheme.
  • the selecting encapsulation module 50 is configured to select an E-TFC set for data transmission in the E-TFC set corresponding to each modulation mode determined by the second determining module 40.
  • the selecting encapsulation module 50 is further configured to: after selecting an E-TFC set for data transmission in the E-TFC set corresponding to each modulation mode, encapsulate the data by using a modulation mode corresponding to the selected E-TFC set.
  • the above-mentioned enhanced dedicated channel transmission format set selection apparatus further includes: a channel determining module 60, configured to determine a logical channel set of data to be transmitted according to a scheduling type of a current transmission time interval.
  • the above-mentioned selection encapsulating module 50 is specifically configured to: encapsulate the to-be-sent data in the logical channel set of the data to be transmitted determined by the channel determining module 60 by using the modulation mode corresponding to the selected E-TFC set.
  • the first code rate calculation module 10 specifically includes: a bit number determining unit 101 and a first code rate determining unit 102.
  • the bit number determining unit 101 is configured to determine, according to the authorization control information allocated by the network side, the total number of bits carried by the E-PUCH channel in each modulation mode.
  • the bit number determining unit 101 further includes: a first calculating subunit 1011, a second calculating subunit 1012, and a first determining subunit 1013.
  • the first calculating subunit 1011 is configured to calculate the total number of bits carried in the E-DCH signaling in each modulation mode according to the code channel resource related information and the slot resource related information included in the authorization control information allocated by the network side.
  • the second calculating sub-unit 1012 is configured to calculate the bit number of the in-band control signaling in each modulation mode according to the number of bits occupied by the E-UCCH number indication and the TPC command in the authorization control information.
  • the first determining sub-unit 1013 is configured to separately calculate the total number of bits carried in the E-DCH signaling in each modulation mode obtained by the first calculating sub-unit 1011 and the in-band control signaling obtained by the second calculating sub-unit 1012. The difference between the number of bits is obtained, and the total number of bits carried by the E-PUCH channel in each modulation mode is obtained.
  • the first rate determining unit 102 is configured to separately calculate a quotient of a transport block size corresponding to each E-TFC and a total number of bits in each modulation mode, to obtain a code rate corresponding to each modulation mode of each E-TFC. .
  • the first determining module 20 is specifically configured to: determine, according to the maximum code rate and the minimum value included in the radio resource configuration information, the code rate corresponding to each E-TFC calculated by the first code rate calculation module 10 and each modulation mode. The code rate between the code rates yields a set of candidate E-TFCs corresponding to the respective modulation schemes.
  • the second code rate calculation module 30 includes: a gain factor determining unit 301, a mapping relationship determining unit 302, and a second code rate determining unit 303.
  • the gain factor determining unit 301 is configured to determine, according to the spreading factor and the absolute grant value of each modulation mode included in the code channel resource related information included in the authorization control information, the maximum allowed for each modulation mode on the E-PUCH channel. The gain factor corresponding to the authorized transmit power.
  • the gain factor determining unit 301 specifically includes: a second determining subunit 3011 and a gain determining subunit 3012.
  • the second determining subunit 3011 is configured to determine a value according to a correspondence between spreading factors and information included in the code channel resource related information.
  • the gain determining subunit 3012 is configured to determine, according to the determined value and the absolute grant value, a gain factor corresponding to the maximum authorized transmit power allowed on each of the modulation modes on the E-PUCH channel.
  • the mapping relationship determining unit 302 is configured to determine a mapping relationship between the gain factor and the code rate according to the radio resource configuration information.
  • the mapping relationship determining unit 302 is specifically configured to: according to a set of reference code rates specified by the network side, the radio resource configuration information includes a mapping table between the reference code rate and the reference power, and a power offset value of the HARQ, and determining the gain factor. The mapping relationship with the code rate.
  • the second rate determining unit 303 is configured to determine, according to the mapping factor determined by the maximum authorized transmission power determined by the gain factor determining unit 301 and the mapping relationship determined by the mapping relationship determining unit 302, the maximum determined by the gain factor determining unit 301. 4 The code rate corresponding to the authorized transmit power.
  • the foregoing second determining module 40 specifically includes: a comparing unit 401 and a set determining unit 402.
  • the comparing unit 401 is configured to compare a size of a code rate corresponding to each corresponding E-TFC in the candidate E-TFC set corresponding to each modulation mode with a corresponding maximum authorized transmit power; a set determining unit 402,
  • the E-TFC is used to form an E-TFC corresponding to each modulation mode by an E-TFC in which the code rate corresponding to the corresponding maximum authorized transmission power in the candidate E-TFC set corresponding to each modulation mode is smaller.
  • the foregoing selecting the encapsulating module 50 specifically includes: a first determining unit 501 and a second determining unit 502. First selection unit 503 and encapsulation unit 504.
  • the first determining unit 501 is configured to determine, according to all E-TFCs included in the E-TFC set corresponding to each modulation mode, a transport block size corresponding to each E-TFC.
  • the second determining unit 502 determines the E-TFC set corresponding to the E-TFC corresponding to the largest transport block.
  • the first selecting unit 503 is configured to select the E-TFC set in which the E-TFC corresponding to the largest transport block is located for data transmission.
  • the encapsulating unit 504 is configured to encapsulate the data by using a modulation mode corresponding to the E-TFC set selected by the first selecting unit 503.
  • the package module 50 is selected, and further includes: a second selection unit 505.
  • the second selecting unit 505 is configured to: if the E-TFC set corresponding to the E-TFC of the largest transport block is more than one, determine the modulation mode with the lowest required transmit power according to the required transmit power of each modulation mode.
  • the E-TFC set is used for data transmission E-TFC sets.
  • the channel determining module 60 specifically includes: a channel selecting unit 601 and a channel determining unit.
  • the channel selection unit 601 is configured to determine, according to a scheduling type of the current transmission time interval, a scheduled transmission or a non-scheduled transmission, and determine a first logical channel set of the data to be transmitted that meets the scheduling type.
  • the channel determining unit 602 is configured to determine, according to the MAC-d flow to which the highest priority logical channel in the first logical channel set belongs, the MAC-d flow that belongs to the same logical channel as the highest priority logical channel in the first logical channel set.
  • the logical channels are combined into a logical channel set of data to be transmitted.
  • the method and device for selecting the enhanced dedicated channel transmission format set provided by the embodiment of the present invention determine a corresponding E-TFC set for each debugging mode, and then select a preferred set for data transmission, and follow in the selection. It is the principle that the transmission power is as small as possible, so that the user equipment can realize data transmission using the transmission power as small as possible.
  • each optional The code rate corresponding to each modulation mode of the E-TFC (pre-configured on the UE) is selected once by the maximum and minimum code rate configured on the network side to determine a candidate E-TFC set. Then, through the determined code rate corresponding to the maximum authorized transmission power corresponding to each modulation mode allowed on the E-PUCH channel, performing secondary screening to obtain an E-TFC set.
  • the resources allocated by the network side not only the authorization control information allocated by the base station is considered, but also the radio link configuration information configured by the RNC is further considered, so that the transmission format set selected by the user equipment is more reasonable and effective.
  • the two selections and the constraint process are combined, that is, the second screening is performed on the basis of the first selection result, which effectively reduces the number of traversal times of the optional E-TFC configured for the user equipment, and improves the E-TFC.
  • the speed and performance of the choice The appropriate E-TFC required for media access control layer data transmission is quickly and efficiently selected within the range allowed by the physical resources of the network side.
  • the above E-TFC selection process is applicable to both HSUPA uplink data transmission in the scheduling transmission mode and uplink data transmission in the non-scheduling mode.
  • Within the framework of the protocol framework for E-TFC selection of the media access sublayer specified by the 3GPP protocol it is fast and reasonable to determine an appropriate E-TFC set that matches the selected modulation scheme for data. transmission. Efficiency and performance are fully considered on the basis of compliance with the agreement.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention porte sur un procédé de sélection de combinaison de formats de transport de canaux dédiés améliorée qui comporte les opérations suivantes : conformément aux informations de commande d'autorisation attribuées par le côté réseau, un équipement utilisateur calcule le rendement de codage de chaque combinaison de formats de transport améliorée (E-TFC), le rendement de codage correspondant à chaque mode de modulation; conformément au rendement de codage E-TFC correspondant à chaque mode de modulation et aux informations de configuration de ressources radio attribuées par le côté réseau, l'équipement utilisateur détermine la combinaison E-TFC candidate correspondant à chaque mode de modulation; conformément aux informations de commande d'autorisation et aux informations de configuration de ressources radio, l'équipement utilisateur détermine le rendement de codage qui est autorisé dans un canal de liaison montante physique E-DCH (E-PUCH), le rendement de codage correspondant à la puissance d'émission autorisée maximale correspondant à chaque mode de modulation; conformément au rendement de codage correspondant à la puissance d'émission autorisée maximale, l'équipement utilisateur détermine la sous combinaison de la combinaison E-TFC candidate en tant que combinaison E-TFC correspondant à chaque mode de modulation; l'équipement utilisateur sélectionne une combinaison E-TFC utilisée pour une transmission de données parmi les combinaisons E-TFC, chaque combinaison E-TFC correspondant à chaque mode de modulation. L'invention porte également sur un appareil pour mettre en œuvre le procédé susmentionné. L'invention rend plus raisonnable et efficace la combinaison de formats de transport sélectionnée par l'équipement utilisateur.
PCT/CN2010/072072 2009-09-02 2010-04-22 Procédé et appareil de sélection de combinaison de formats de transport de canaux dédiés améliorée WO2011026331A1 (fr)

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CN101820649B (zh) * 2010-05-18 2014-10-22 中兴通讯股份有限公司 增强专用传输信道传输格式组合选择方法及系统
CN101860919B (zh) * 2010-05-28 2012-12-12 中国科学院计算技术研究所 无线通信系统中的传输资源调度方法
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CN102932896B (zh) * 2011-08-09 2018-03-16 中兴通讯股份有限公司 一种高速上行分组接入e‑tfc选择方法和装置
CN103188776B (zh) * 2011-12-31 2016-02-03 展讯通信（上海）有限公司 一种e-tfc选择方法和系统
CN103220254B (zh) * 2012-01-20 2016-02-17 电信科学技术研究院 一种指示和确定传输格式组合的方法、设备及系统
CN103427936B (zh) * 2012-05-18 2017-08-11 深圳市中兴微电子技术有限公司 一种选择传输格式的方法及装置

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