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WO2008003264A1 - Procédé et appareil de réalisation d'une liaison sans fil e-dch - Google Patents

Procédé et appareil de réalisation d'une liaison sans fil e-dch Download PDF

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Publication number
WO2008003264A1
WO2008003264A1 PCT/CN2007/070204 CN2007070204W WO2008003264A1 WO 2008003264 A1 WO2008003264 A1 WO 2008003264A1 CN 2007070204 W CN2007070204 W CN 2007070204W WO 2008003264 A1 WO2008003264 A1 WO 2008003264A1
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WO
WIPO (PCT)
Prior art keywords
dch
radio link
scrambling code
network controller
downlink control
Prior art date
Application number
PCT/CN2007/070204
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English (en)
Chinese (zh)
Inventor
Sheng Liu
Original Assignee
Huawei Technologies Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co., Ltd. filed Critical Huawei Technologies Co., Ltd.
Publication of WO2008003264A1 publication Critical patent/WO2008003264A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management

Definitions

  • the present invention relates to the field of mobile communications, and in particular, to a method for enhancing an enhanced dedicated channel (“E-DCH”) radio link operation, and a base station node and a radio network controller.
  • E-DCH enhanced dedicated channel
  • the Universal Mobile Telecommunications System (“Medical TS”) is compatible with existing legacy GSM systems.
  • the GSM system will transition to the medical TS in stages.
  • the General Packet Radio Service (“GPRS”), which has been introduced now, provides connectionless services to the GSM network, expands the service functions and flexibility of the GSM system, and improves the transmission rate of packet data. It is a "2.5 generation GSM” mobile communication and is gradually transitioning to the third generation mobile communication system (UMTS).
  • GPRS General Packet Radio Service
  • the main functions of the UMTS Terrestrial Radio Access Network include radio resource management, mobile management such as handover management, radio access bearer, security management, and location service management. Wait.
  • Node B a base station node
  • RNC Radio Network Controller
  • one Node B11 contains one or more cells.
  • the interface between the Node B11 and the RNC 12 is a lub interface, and the interface between the RNCs 12 is a lur interface.
  • the interface between the RNC 12 and the Core Network (CN) 13 is an Iu interface, and the RNC 12 and the Node B 11 controlled by the RNC 12 are configured.
  • the Radio Network Subsystem (“RNS”) is shown in the dotted line in Figure 1.
  • the RNS and the User Equipment (“UE”) are connected through a Uu interface (not shown), that is, an air interface.
  • SRNS Serving Radio Network Subsystem
  • DRNS Drift Radio Network Subsystem
  • DRRC radio network controller
  • SRNS the migration of the wireless network subsystem
  • DRRC radio network controller
  • the control plane signaling of the Iub and Iur interfaces of UTRAN is the Node-B Application Part ("NBAP") and the Radio Network Sub-system Application Part (RNSAP). .
  • NBAP Node-B Application Part
  • RNSAP Radio Network Sub-system Application Part
  • One of their main functions is to support the establishment/addition/reconfiguration/deletion of wireless links.
  • the RNC controls the Node B controlled by the NBAP signaling. When the UE moves beyond the coverage of the SRNS, the SRNC controls the DRNS through the RNSAP signaling.
  • composition of the medical TS is described in detail, followed by a more detailed description of the E-DCH.
  • E-DCH is also called High Speed Uplink Packet Access (HSUPA).
  • HSUPA High Speed Uplink Packet Access
  • the uplink physical channel related to the E-DCH includes an E-DCH Dedicated Physical Data Channel (E-DCH Dedicated Physical Data Channel, referred to as "E-DPDCH”) for carrying user data, and a bearer demodulation receiving E-DPDCH.
  • E-DCH Dedicated Physical Control Channel E-DPCCH
  • the downlink physical channels related to the E-DCH are control channels, and include an E-DCH Absolute Grant Channel (E-DCH Absolute Grant Channel, referred to as "E" for carrying an absolute authorization command of an E-DCH serving cell that controls an uplink transmission resource.
  • E-DCH Absolute Grant Channel referred to as "E” for carrying an absolute authorization command of an E-DCH serving cell that controls an uplink transmission resource.
  • E-AGCH an E-DCH Relative Grant Channel
  • E-RGCH E-DCH Relative Grant Channel
  • E-HICH E-DCH Hybrid ARQ Indicator Channel
  • RLS E-DCH service radio link set
  • RG Relative Grant
  • Radio Link Non-Service Radio Link
  • E-AGCH is a downlink common physical channel with a fixed rate Spreading Factor ("SF") of 256. As shown in FIG. 2, one frame of the E-AGCH channel includes 15 time slots, and each of the three time slots constitutes one subframe. As described above, the E-DCH supports two modes of 10 ms TTI and 2 ms TTI, where, for 2 ms TTI In the mode, the E-DCH absolute grant command for one UE is transmitted by one subframe. For the 10 ms TTI mode, the E-DCH absolute grant command for one UE is transmitted by one frame.
  • SF Spreading Factor
  • E-RGCH and E-HICH are dedicated physical channels with fixed rates and the same frame structure, as shown in Figure 3. Due to the similarity in frame structure between E-RGCH and E-HICH, the two channels share the same downlink channel code for one UE.
  • E-DCH radio links can be implemented through radio link establishment, radio link addition, synchronous radio link reconfiguration, and asynchronous radio link reconfiguration. Operations such as establishing, adding, reconfiguring, or deleting.
  • the NBAP and RNSAP messages involved in the above processes include messages initiated by CRNC and SRNC, and successful/unsuccessful response messages returned by the corresponding Node B and DRNS.
  • the messages initiated by CRNC and SRNC include:
  • the "RADIO LINK RECONFIGURATION PREPARE” message, the "RADIO LINK RECONFIGURATION REQUEST” message, and the success response message returned by Node B and DRNS contain:
  • the "RADIO LINK RECONFIGURATION READY” message, the "RADIO LINK RECONFIGURATION RESPONSE” message, and the unsuccessful response message returned by Node B and DRNS contain:
  • the success response message contains an information element (Informal; ion element, referred to as "IE"): "E-DCH FDD DL Control Channel Information” (translated to "E-DCH FDD downlink control channel information,"),
  • the information element mainly includes information related to the E-DCH radio link downlink control channel, and the specific description of the IE is shown in Table 1.
  • the IE is used to control the transmission scheduling of the E-DCH allocated by the Node B or the DRNS.
  • the associated control channel parameters are returned to the CRNC and finally returned to the SRNC for forwarding by the SRNC to the UE via RRC.
  • the IE contains the IE "E-AGCH And E-RGCH” with the channel parameters (including scrambling code and channelization code) of the E-AGCH, E-RGCH and E-HICH of the corresponding radio link. /E-HICH FDD
  • E-HICH are FDD Scrambling Code 0
  • E-AGCH And (optional) downlink scrambling code (send E-AGCH, E-RGCH E-RGCH/E-HICH FDD scrambling code) 9.2.2.13) and E-HICH's horse guard)
  • E-HICH Signature Sequence 0 RGHICH - 1) (E-HICH signature sequence) (optional) integer
  • index 38 indicates zero authorization
  • the scrambling codes of the E-RGCH, E-HICH, and E-AGCH channels of each cell, and the corresponding phase reference common pilot channel (Primary Common Pilot Channel, referred to as "P-CPICH”) Or the second common pilot channel (Secondary Common Pilot Channel, referred to as "S-CPICH”) has the same scrambling code.
  • P-CPICH is usually the phase used for channel estimation.
  • S-CPICH is mainly used to support beamforming. The usage of the phase reference S-CPICH is as shown in FIG.
  • the capability information such as the CRNC W Node B resource status after the Node B is started establishes the cell of the Node B through the "CELL SETUP REQUEST" NBAP message, if The Node B supports beamforming, and the CRNC will instruct the Node B to establish a corresponding S-CPICH channel through the IE "Secondary CPICH Information" of the message.
  • the IE "Secondary CPICH Information” contains all the information needed to establish an S-CPICH channel, including channel ID (channel number), scrambling code, channel code, transmit power, and whether or not to transmit diversity.
  • “CELL SETUP REQUEST” message also includes "Cell” Portion Information, as shown in Table 3, the role of the IE is to associate the ID of the cell lobe with the corresponding S-CPICH, thereby assigning the corresponding phase reference S-CPICH to each cell lobe. 3: Message "CELL SETUP REQUEST, contains the IE "Cel 1 Port ion Information"
  • the Node B is responsible for performing beamforming related measurements, including Received total wide band power such as cell portion, and Transmitted carrier power of the cell lobes. And other common measurements, as well as special measurements such as Signal to Interference Ratio (SIR) for specific wireless links, and report the measurement results to CRNC through NBAP measurements.
  • SIR Signal to Interference Ratio
  • the Node B will also measure the SIR of the UE in each cell lobe, and pass the ID information of the cell lobes with the highest SIR (ie, the best cell lobes) through the Lub FP (Frame Protocol).
  • a Random Access CHannel (RACH) data frame is reported to the CRNC.
  • Said A cell lobes refers to a particular geographic area in a cell that performs measurements for beamforming.
  • the CRNC can obtain the best cell lobe information of the UE by using the measurement of the Node B, so as to assign the phase reference S-CPICH corresponding to the best cell lobe to the corresponding radio link of the UE.
  • phase reference S-CPICH adopted by the radio link is assigned by the measurement of CRNC » Node B, and as described above, E-RGCH, E-HICH and E of each cell according to the existing relevant protocol specifications.
  • the scrambling code of the -AGCH channel is the same as the scrambling code of the corresponding phase reference P-CPICH or S-CPICH. Therefore, the Node B does not actually select the scrambling code of the E-RGCH, E-HICH and E-AGCH channels, E.
  • the scrambling codes for the -RGCH, E-HICH and E-AGCH channels are determined by the CRNC.
  • the IE "RL Information" of the NBAP message "RADIO LINK SETUP REQUEST” contains the following IEs:
  • the IE "RL Information" in the NBAP message "RADIO LINK RECONFIGURATION PREPARE” contains the following IEs:
  • the SRNC is not the CRNC of the UE and is not responsible for allocating the radio resources of the DRNS, the phase reference corresponding to the radio link of the UE provided by the DRNS is allocated by the DRNC and returned to the SRNC.
  • the RNSAP includes the following IEs in the return messages "RADIO LINK SETUP RESPONSE” of the radio link setup process and the IE “RL Information Response” of "RADIO LINK SETUP FAILURE”:
  • the IE "RL Information Response” in RECONFIGURATION READY" also contains the following IEs:
  • E-DCH FDD DL Control Channel Information of the response message of the existing NBAP, RNSAP and radio link operation related messages (E-DCH FDD downlink control channel information)
  • the scrambling codes of E-AGCH, E-RGCH and E-HICH are returned to the RNC through the IE "E-AGCH And E-RGCH and E-HICH FDD Scrambling Code”.
  • Node B cannot independently select the downlink control channel scrambling codes of E-AGCH, E-RGCH and E-HICH, and the downlink control channel scrambling code is to allocate P-CPICH or S-CPICH reference channels by RNC. Obtained by scrambling code. Therefore, if the E-AGCH, E-RGCH, and E-HICH scrambling codes returned by the Node B to the RNC are incorrect (for example, because of transmission reasons), and the reference channel scrambling code allocated by the RNC is inconsistent, the E-subsequent E- may be caused. DCH radio link related operations (such as E-DCH downlink control channel configuration) are incorrect.
  • E-AGCH, E-RGCH and E-HICH scrambling codes returned by the DRNC to the SRNC are not the same as the corresponding phase reference P-CPICH or S-CPICH scrambling codes, it will also cause the subsequent ESR of the SRNC.
  • - DCH radio link related operations (such as E-DCH downlink control channel configuration) are incorrect.
  • the embodiments of the present invention provide a method for implementing an E-DCH radio link operation, and a base station node and a radio network controller, so that the correctness of the E-DCH downlink control channel configuration is ensured.
  • An embodiment of the present invention provides a configuration method for implementing an enhanced dedicated channel E-DCH radio link operation, where a reference channel scrambling code of an enhanced dedicated channel E-DCH radio link is configured in a base station node, where the base station node Performing the E-DCH radio link operation using the reference channel scrambling code and avoiding transmitting a downlink control channel scrambling code of the E-DCH radio link to a radio network controller.
  • the embodiment of the invention further provides a base station node, which is configured with a reference channel of an E-DCH radio link.
  • the scrambling code includes: a radio link operation unit, configured to perform the E-DCH wireless link operation by using the reference channel scrambling code; and a sending unit, configured to send a response message to the radio network controller, and avoid carrying therein Downlink control channel scrambling code of the E-DCH radio link.
  • the embodiment of the invention further provides a method for implementing an enhanced dedicated channel radio link operation, the migrating radio network controller assigning a reference channel scrambling code of the E-DCH radio link; and migrating the radio network controller to the serving radio network control
  • the transmitter transmits a reference channel scrambling code of the E-DCH radio link and avoids transmitting a downlink control channel scrambling code of the E-DCH radio link to the serving radio network controller.
  • An embodiment of the present invention further provides a radio network controller, including: an assignment unit, configured to assign a reference channel scrambling code of an E-DCH radio link; and a migration side processing unit, configured to be used in the radio network controller Transmitting the radio network controller, transmitting a reference channel scrambling code of the E-DCH radio link to the serving radio network controller, and avoiding transmitting downlink control of the E-DCH radio link to the serving radio network controller Channel scrambling code.
  • a radio network controller including: an assignment unit, configured to assign a reference channel scrambling code of an E-DCH radio link; and a migration side processing unit, configured to be used in the radio network controller Transmitting the radio network controller, transmitting a reference channel scrambling code of the E-DCH radio link to the serving radio network controller, and avoiding transmitting downlink control of the E-DCH radio link to the serving radio network controller Channel scrambling code.
  • the Node B avoids sending the downlink control channel scrambling code of the E-DCH radio link to the RNC, or the DRNC avoids sending the downlink control of the E-DCH radio link to the SRNC.
  • the channel is scrambled, so there is no phenomenon that the reference channel scrambling code received by the receiver is different from the corresponding downlink control channel scrambling code.
  • the RNC needs to use the E-DCH downlink control channel scrambling code, it can directly query the scrambling code corresponding to the corresponding radio link reference channel, thereby fundamentally eliminating the misuse of the downlink control channel interference transmitted by the Node B or the DRNC. The possibility of the code, and thus the correctness of the E-DCH downlink control channel configuration is guaranteed.
  • 3 is a frame structure of an E-RGCH and an E-HICH in the prior art
  • FIG. 5 is a schematic flowchart of a first embodiment of a method for implementing an E-DCH wireless link according to the present invention
  • FIG. 6 is a schematic structural diagram of an embodiment of a base station node according to the present invention.
  • FIG. 7 is a schematic structural diagram of an embodiment of a radio network controller according to the present invention.
  • FIG. 5 it is a flow of a first embodiment of a method for operating an E-DCH radio link according to the present invention. Cheng Tu.
  • step 510 when establishing a cell, the RNC pre-configures at least one reference channel and its corresponding scrambling code in the Node B. Further, the RNC assigns the reference channel information of the E-DCH radio link to the Node B according to the measurement information of the Node B, including the scrambling code of the reference channel. Through this step, the reference channel scrambling code of the E-DCH radio link is configured in the Node B.
  • the Node B configures the radio link (ie, performs various operations of the E-DCH radio link) using the reference channel scrambling code of the E-DCH radio link, the process including the E-DCH radio link.
  • the Node B is prevented from returning the scrambling code of the E-DCH radio link downlink control channel to the RNC.
  • the RNC acts as a DRNC, and the DRNC needs to send a response message to the SRNC, and carries the reference channel scrambling code of the E-DCH radio link therein, and It is necessary to avoid the scrambling code carrying the E-DCH radio link downlink control channel.
  • the related NBAP and RNSAP procedures include the following operations: radio link setup, radio link addition, synchronous radio link reconfiguration, and non-synchronous radio link reconfiguration.
  • index 38 indicates zero authorization
  • Pr imary/ Secondary Grant (Primary, E-RNTI or a secondary)
  • step 520 the process proceeds to step 530, where the RNC finds the scrambling code of the corresponding E-DCH radio link downlink control channel locally according to the reference channel of the radio link, and configures the corresponding radio link for the UE by using the RRC message, including The UE provides a downlink control channel scrambling code for the radio link.
  • the reference channel scrambling code of the E-DCH radio link may be directly sent to the UE as the downlink control channel scrambling code through RRC; the reference channel identifier of the radio link may also be used.
  • the UE searches for the scrambling code of the corresponding reference channel according to the received reference channel identifier, thereby obtaining a scrambling code of the E-DCH downlink control channel.
  • the reference channel identifier is used as the UE to find E. - The basis of the DCH radio link downlink control channel scrambling code.
  • the Node B avoids sending the downlink control channel scrambling code of the E-DCH radio link to the RNC and the downlink control channel scrambling code of the DRNC to avoid sending the E-DCH radio link to the SRNC, which is not limited. Used in combination. Because if the UE does not move beyond the cell coverage of the SRNS, then there is no relevant step for the DRNC to send a response message to the SRNS. Secondly, even if there is a related step of the DRNC transmitting the response information to the SRNS, as long as one of the two processes adopts the technical solution shown in the embodiment of the present invention, the existing E-DCH downlink control channel configuration can be improved to some extent. The correctness.
  • the NodeB can send the downlink control channel scrambling code of the E-DCH radio link to the DRNC according to the prior art scheme.
  • the DRNC sends a response message to the SRNC, only the reference channel scrambling code of the E-DCH radio link is transmitted, and the downlink control channel scrambling code of the E-DCH radio link is avoided.
  • the NodeB avoids transmitting the downlink control channel scrambling code of the E-DCH radio link to the DRNC;
  • the SRNC sends the response message, the reference channel scrambling code of the E-DCH radio link and the downlink control channel scrambling code of the E-DCH radio link may be sent according to the prior art scheme.
  • FIG. 6 is a schematic structural diagram of a Node B embodiment according to the present invention.
  • the Node B device in this embodiment is configured with a reference channel scrambling code (usually configured by the RNC) of the E-DCH radio link, and the Node B includes a radio link operation unit 61 and a sending unit 62, which are combined below.
  • the working principle of Node B is further explained by its internal structure and connection relationship.
  • the E-DCH radio link operation is performed by the radio link operation unit 61 using the reference channel scrambling code.
  • the E-DCH radio link operation includes establishment of an E-DCH radio link, addition of an E-DCH radio link, reconfiguration of an E-DCH radio link, or deletion of an E-DCH radio link.
  • the reference channel is P-CPI CH or S-CPICH.
  • the E-DCH radio link downlink control channel includes: one or more of an E-DCH absolute grant channel, an E-DCH relative grant channel, and an E-DCH hybrid automatic repeat request indication channel.
  • FIG. 7 is a schematic structural diagram of an RNC embodiment in the present invention.
  • the RNC in this embodiment includes the assignment unit 71 and the migration side processing unit 72. The internal structure and the connection relationship are further combined with the working principle of the RNC.
  • the reference channel related information of the E-DCH radio link is assigned by the assigning unit 71.
  • the measurement result of the assignment unit 71 » Node B is a reference channel to which the E-DCH radio link is assigned and related information.
  • the DRNC When the UE moves and the RNC is used as the DRNC, the DRNC sends the reference channel scrambling code of the E-DCH radio link to the corresponding SRNC through the migration side processing unit 72, and avoids sending the E-DCH radio to the SRNC. Downlink control channel scrambling code for the link. In this way, the SRNC does not receive the reference channel scrambling code of the E-DCH radio link transmitted by the DRNC, and receives the downlink control channel scrambling code of the E-DCH radio link, thereby ensuring that the SRNC provides the UE with the E- The accuracy of the DCH radio link downlink control channel scrambling code.
  • one RNC is a DRNC for one UE and an SRNC for another UE. Therefore, in order to make a RNC applicable to diverse needs, the service side can also be set in the RNC. Processing unit.
  • the service side processing unit receives the response message from the DRNC including the E-DCH radio link reference channel scrambling code, directly providing the E-DCH radio link to the UE according to the E-DCH radio link reference channel scrambling code Downlink control channel scrambling code.
  • the downlink control channel scrambling code of the E-DCH radio link provided by the service side processing unit for the UE may be implemented in various specific manners.
  • the service side processing unit includes a first scrambling code notification unit, configured to directly send the reference channel scrambling code of the E-DCH radio link to the user equipment as a downlink control channel scrambling code; or the service The side processing unit includes a second scrambling code notification unit, configured to send a reference channel identifier of the E-DCH radio link to the user equipment, where the reference channel identifier is used to search for the E- The basis of the DCH radio link downlink control channel scrambling code.
  • embodiments of the present invention solve the potential risk of RNC control errors by avoiding the downlink control channel scrambling code of the E-DCH radio link transmitted from the Node B to the RNC or from the DRNC to the SRNC. Moreover, since the amount of information transmitted between the Node B and the RNC or between the DRNC and the SRNC is greatly reduced, the efficiency of the NBAP and RNSAP messages is also improved.

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

Abstract

L'invention concerne un procédé de réalisation d'une liaison sans fil de canal spécialisé amélioré (E-DCH) dans le secteur de la communication mobile, qui consiste à : configurer le code d'embrouillage du canal de référence du canal E-DCH dans le noeud BS, lequel réalise la liaison sans fil du canal E-DCH au moyen du code d'embrouillage du canal de référence et empêche la transmission du code d'embrouillage du canal de commandes de liaison descendante de la liaison sans fil E-DCH au contrôleur de réseau sans fil. L'invention concerne aussi un noeud BS et un contrôleur de réseau sans fil. L'invention permet d'assurer une configuration correcte du canal de commande de liaison descendante E-DCH.
PCT/CN2007/070204 2006-06-29 2007-06-29 Procédé et appareil de réalisation d'une liaison sans fil e-dch WO2008003264A1 (fr)

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CNB2006101008260A CN100414857C (zh) 2006-06-29 2006-06-29 E-dch无线链路配置方法

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CN1434591A (zh) * 2002-01-23 2003-08-06 华为技术有限公司 一种在移动通信网络中提供实时广播业务的方法
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CN103107865B (zh) * 2011-11-10 2018-02-16 中兴通讯股份有限公司 一种多入多出模式判决方法及无线网络控制器

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