WO2008104094A1

WO2008104094A1 - A method for sharing the non-scheduling resource and the scheduling resource in the enhanced uplink system

Info

Publication number: WO2008104094A1
Application number: PCT/CN2006/003679
Authority: WO
Inventors: Peng Geng; Hui Chen
Original assignee: Zte Corporation
Priority date: 2006-11-01
Filing date: 2006-12-29
Publication date: 2008-09-04
Also published as: CN101175301A; CN101175301B

Abstract

A method for sharing the non-scheduling resource and the scheduling resource includes: respectively allocating E-HICH channel for the non-scheduling and the scheduling service; allocating the different HARQ process identifier for the non-scheduling and the scheduling service; UE selects to send the non-scheduling and the scheduling service, and sends the corresponding HARQ process identifier to Node B; Node b identifies the non-scheduling and the scheduling service according to HARQ process identifier, and processes for it; Node B sends the HARQ receiving ACK indication message to UE by selecting E-HICH channel of the non-scheduling or the scheduling E-HICH channel according to the selected service type. By the above described technology method, implementing the following effect: improving the resource efficiency, avoiding the resource waste or the unfair treatment for the user scheduling service.

Description

TECHNICAL FIELD The present invention relates to the field of communications, and more particularly, to a non-scheduled in an uplink enhancement technique for a time division code division multiple access wireless communication system. A method of sharing resources and scheduling resources, which is applicable to TD-CDMA and TD-SCDMA systems. BACKGROUND OF THE INVENTION In the third generation mobile communication system, in order to provide a higher rate of uplink packet service, the specification of the improved spectrum system introduces a High Speed Uplink Packet Access (HSUPA) feature, that is, an uplink enhancement feature. In the HSDPA feature, network processing is reduced by introducing Adaptive Modulation and Coding (AMC), Hybrid Automatic Retransmission Request (HARQ), and Node B (Node B) controlled scheduling techniques. Delay, thereby increasing the rate of uplink packet services and improving spectrum utilization efficiency. Among them, due to the difference in system characteristics between FDD systems (including WCDMA) and TDD systems (including TD-CDMA and TD-SCDMA), the scheduling technology controlled by Node B is different in FDD and TDD systems. In the FDD system, the Node B controls the uplink transmission rate of the UE by controlling the uplink transmit power of the UE (the user equipment). In the TDD system, the Node B controls the uplink transmit power of the UE (the user equipment). It is necessary to control the uplink physical channel resources used by the UE. The HSUPA system is also known as the uplink enhancement system, referred to as the E-DCH system. In the TD-CDMA system, the new technology introduced by the HSUPA system includes the following: At the MAC (Medium Access Control) layer, a new MAC entity (MAC-es/MAC-e) is introduced on the UE side, located in the MAC-d. Next, responsible for HARQ retransmission, MAC-e multiplexing, and E-TFC selection. A new MAC entity (MAC-e) is introduced in the Node B on the network side, which is responsible for HARQ retransmission, scheduling, and MAC-e demultiplexing. A new MAC entity (MAC-es) is introduced in the SRNC on the network side to provide MAC-es reassembly (for the sequential delivery of MAC-d PDUs). In terms of transport channels, enhanced uplink data bearers in newly introduced dedicated transport channels

On the E-DCH. Each UE has at most one CCTrCH of the E-DCH type, and only one E-DCH can be multiplexed in each CCTrCH. The E-DCH carries a MAC-e transport block in one TTI, and the E-DCH has a TTI of 10 ms. At the physical layer, an E-PUCH physical channel is newly introduced for transmitting the CCTrCH of the E-DCH type. The scheduling entity located in the MAC-e of the Node B is responsible for the allocation of E-PUCH physical resources. A part of the MAC-e uplink signaling is carried by the two newly introduced uplink control channels, and mainly transmits HARQ and auxiliary scheduling related information, and these channels are terminated at the Node B. The E-UCCH (E-DCH uplink control channel) is included for transmitting E-TFCI and HARQ related information. The E-UCCH information may be transmitted in one or more time slots of the E-DCH and multiplexed with the E-DCH onto a set of E-PUCHs within the TTI. The multiplexing mode of E-UCCH is to use the physical layer indication field. E-RUCCH (E-DCH random access uplink control channel), used to transmit information related to auxiliary scheduling. The E-RUCCH can be mapped to a random access physical channel resource and can share some resources with the existing PRACH. The information carried by E-UCCH and E-RUCCH is self-contained in one time slot. The downlink signaling channels E-AGCH and E-HICH are newly introduced, where the E-AGCH is used to transmit the authorization information, and the E-HICH is used to carry the uplink E-DCH HARQ indication information. The HSUPA technology in the above TD-CDMA system supports scheduling and non-scheduled transmission. For non-scheduled transmission, the RNC configures the E-PUCH resource for unscheduled transmission. The UE can send E through the resource at any time as long as the resource is available. -DCH does not require scheduling authorization from Node B. This can reduce signaling load and scheduling delay. Typical services that use unscheduled transmission are SRB and GBR services. For the scheduled transmission, the E-PUCH resource pool is allocated by the RNC, and the UE requests the resource allocation through the E-RUCCH or the E-DCH request, and then the Node B dynamically configures the E-PUCH resource that each UE schedules to transmit, and only the Node B passes the E- When the AGCH channel authorizes the UE to use certain scheduled E-PUCH resources, the UE can send the E-DCEL through the resource. In this method, when the UE performs uplink transmission, it needs to determine whether the next TTI is used for scheduling transmission or non-scheduling. transmission. The unscheduled transmission uses the non-scheduled E-PUCH resource, and the scheduling service uses the scheduling E-PUCH resource. If neither is suitable (scheduled transmission of unlicensed resources, non-scheduled transmission of resources is not available), no transmission is performed. The method of HSUPA technology supporting scheduling and non-scheduled transmission in the above TD-CDMA system can also be applied to the TD-SCDMA system, and the detailed information can refer to the existing 3GPP protocol. However, this method has the following problems: The UE can only use one of the non-scheduled resources or the scheduling resources at any transmission time (such as the 5ms TTI in the TD-SCDMA system), that is, the non-scheduled resources. The source sends the non-scheduled service data, or sends the scheduled service data with the authorized scheduling resource. Although the Node B also knows the non-scheduled resource allocated by the RNC to the UE, it can avoid the time when the non-scheduled resource is valid for the UE in the allocation of the scheduling resource. Allocating scheduling resources to avoid waste of resources, but doing so may result in unfair treatment of scheduling services among users who have both scheduling and non-scheduled services, that is, if a user has non-scheduled resources for a long time, the user The scheduling service will not be scheduled for a long time. If the transmission of the scheduling service is to be taken into consideration, the Node B needs to allocate the authorized scheduling resources to the UE according to the normal scheduling policy, and the UE can only select the non-scheduled at the same sending time. One of the resource or the authorized scheduling resource, which inevitably causes waste of resources. Therefore, as can be seen from the above description, the technical solution of the related art has the problem that non-scheduled resources and scheduling resources cannot be used at the same time, and therefore resources cannot be fully utilized, thereby causing waste of resources. SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and a main object of the present invention is to provide a technical solution capable of simultaneously using non-scheduled resources and scheduling resources. In order to achieve the above object, the present invention provides a method for sharing non-scheduled resources and scheduling resources. The method includes the following steps: The first step is to allocate an E-HICH channel for the non-scheduled service and the scheduling service respectively; the second step is to allocate different hybrid automatic repeat request processing identifiers for the non-scheduled service and the scheduling service; The user equipment selects to send the non-scheduled service or the scheduled service, and sends the corresponding hybrid automatic repeat request processing identifier to the node B. In the fourth step, the node B distinguishes the non-scheduled service from the scheduled service according to the hybrid automatic repeat request processing identifier. And processing the same; in the fifth step, the Node B sends a hybrid automatic repeat request acknowledgement indication indication message to the user equipment by selecting the unscheduled or scheduled E-HICH channel; and a sixth step, the user equipment selects the service according to the The type determines to receive a hybrid automatic repeat request acknowledgement indication message on the unscheduled or scheduled E-HICH channel. The details of each step will be described below. In the first step, the E-HICH channelization code of the unscheduled service is configured by the high layer signaling, or the E-HICH channel 4b code of the scheduling service is dynamically configured by the Node B, and the E-HICH channel is sent through the E-AGCH. Give the user device. In the second step, the hybrid automatic repeat request processing flag is configured through system definition or higher layer signaling. Knowledge. In the third step, the user equipment selects to send the non-scheduled service in the case that there is only the uplink unscheduled transmission request without the uplink scheduling transmission request or the unauthorized scheduling E-PUCH resource; In the case that the uplink non-scheduled transmission request and the user equipment clears that the Node B authorizes the scheduling of the E-PUCH resource, the user equipment selects to send the scheduling service; in the case of the existing uplink non-scheduled transmission and the uplink scheduling transmission requirement, the user equipment is based on The predetermined policy is selected to send a non-scheduled service or a scheduled service. In the third step, in the case of only the scheduled E-PUCH resource, only the scheduling type of service is allowed to be transmitted in the afternoon; when only the non-scheduled Ε-PUCH resource is available, only the non-scheduled type of service is allowed to be transmitted; When the scheduling and scheduling of the E-PUCH resources are performed, the user equipment selects to send the non-scheduled service or the scheduled service according to the predetermined policy. In the third step, when both the non-scheduled and the scheduled E-PUCH resources are used, the scheduling and non-scheduled resources are simultaneously used for scheduling or non-scheduled service transmission, and the manners used at the same time include: scheduling and non-scheduling of the same time slot. Channelized code resources and power resources, scheduling and non-scheduled channelization code resources and power resources of different time slots. In the fourth step, the node 区分 simultaneously distinguishes the non-scheduled service from the scheduled service by referring to the hybrid automatic repeat request processing identifier assigned in the second step. In the fifth step, for the non-scheduled service, the node sends the hybrid automatic repeat request receiving acknowledgement indication message by selecting the E-HICH channelization code that is statically configured by the high layer signaling; for the scheduling service, the node passes the previous pass- The E-HICH channelization code indicated by the AGCH transmits a hybrid automatic repeat request reception confirmation indication message. In the sixth step, in the case that the service type is a non-scheduled service, the user equipment selects to receive the E-HICH channelized code channel that is statically configured through the high layer signaling; in the case that the service type is the scheduling service, before the user equipment selects E-HICH channelized code channel indicated by Ε-AGCH. Through the above technical solution, the present invention achieves the following beneficial effects: in a time division code division multiple access system,

When the HSUPA technology supports scheduled and unscheduled transmission, the E-PUCH physical channel resources of the unscheduled transmission and the scheduled transmission can be used at the same time, which improves the resource utilization and avoids waste of resources or unfair treatment of the user scheduling service. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are set to illustrate,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, In the drawings: FIG. 1 is a flowchart of a method for sharing non-scheduled resources and scheduling resources according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. First Embodiment In this embodiment, a method for sharing non-scheduled resources and scheduling resources is provided. As shown in FIG. 1, the method includes the following steps: Step S102, respectively, assigning an E-HICH channel to a non-scheduled service and a scheduling service; Step S104, allocating different hybrid automatic repeat request processing identifiers for the non-scheduled service and the scheduling service. (HarQ Process ID); Step S106, the user equipment selects to send the non-scheduled service or the scheduling service, and sends the corresponding hybrid automatic repeat request processing identifier to the node B; Step S108, the node B: according to the hybrid automatic repeat request processing identifier Differentiating and processing the non-scheduled service and the scheduling service; Step S110, the Node B sends a hybrid automatic repeat request acknowledgement indication indication message to the user equipment by selecting the unscheduled or scheduled E-HICH channel; and step S112, The user equipment determines to receive the hybrid automatic repeat request acknowledgement indication indication message on the unscheduled or scheduled E-HICH channel according to the selected service type. The respective steps above will be described in detail below. First, in step S102, in a cell, if the uplink enhancement technology is supported, the RNC configures and saves one or more E-HICH channelization code resources and sends them to the Node B. The Node B configures and saves all E-HICHs. Channelization code resource. Specifically, for the unscheduled traffic and the scheduled traffic, the E-HICH channelization code resources are respectively allocated. The E-HICH channelization code of the scheduling service is dynamically configured by the Node B and sent to the UE through the E-AGCH. The E-HICH channelization code of the unscheduled service can be configured by the high-level signaling static configuration. One of the one or more E-HICH channel code resources configured by the RNC may be allocated to the UE by the RNC, and then the allocation information is separately sent to the Node B and the UE through the high layer signaling; The B allocates one of the one or more E-HICH channelization codes to the UE, and then sends the allocation information to the RNC through the high layer signaling, and the RNC sends the information to the UE through the high layer signaling. In step S104: In the E-DCH transmission process, the Process ID of the HARQ entity processed in the current transmission of the UE 4 is sent to the Node B through the E-UCCH, so that the peer HARQ entity processes the Process corresponding to the Process ID. . Therefore, in order to distinguish between non-scheduled services and scheduled services, the system configures different HARQ Process IDs for non-scheduled services and scheduling services. For example, the system has a total of eight Process IDs, numbered 0...7, and the system specifies 0... The Process ID of 3 is configured for use by the scheduling service, and the Process ID of 4...7 is configured for use by the non-scheduled service. Of course, different process IDs can also be configured for the scheduled and unscheduled services to the Node B and the UE through high layer signaling. In step S106, before the start of the E-DCH transmission, the UE configures all resources related to the unscheduled transmission and/or the scheduled transmission according to the network side configuration information. For the scheduling service, the UE also needs to request the Node B to allocate the E-PUCH resource of the scheduled transmission, and the Node B dynamically allocates and transmits the E-PUCH channel resource in the E-PUCH channel resource pool and the corresponding power resource to the UE. When the E-DCH transmission is performed, the UE selects to send the non-scheduled service or the scheduled service. Of course, the RNC may also provide some parameters to assist or control the UE's selection. However, for the E-PUCH resource, the UE may perform E-DCH transmission using the non-scheduled transmission and the scheduled transmission E-PUCH resource in a shared manner. When the UE performs E-DCH transmission, if there is only uplink unscheduled transmission requirement, there is no uplink scheduling transmission requirement, and there is no authorized scheduling E-PUCH resource, the UE may use the non-scheduled E-PUCH resource at any time to perform non- Scheduling the transmission, and transmitting the non-scheduled HARQ Process ID corresponding to the transmission to the Node B; if there is only the uplink scheduling transmission requirement, there is no uplink non-scheduled transmission requirement, and the UE requests the Node B to authorize the scheduling E-PUCH resource, The UE chooses to perform scheduled transmission. For the E-PUCH resource, if the non-scheduled E-PUCH resource is available at this time, the authorized scheduling E-PUCH resource and all non-scheduled E-PUCH resources are used for scheduling transmission; otherwise, the authorized scheduling E-PUCH resource is used.亍 Schedule transmission. At the same time, the scheduled HARQ Process ID corresponding to the transmission is sent to the Node B; in some cases, if the scheduling resource allocation authorization can continue for multiple TTIs, the authorized E-PUCH resources are scheduled, but there may be no uplink scheduling. Transmission requirements, if there is an uplink unscheduled transmission requirement at this time, the UE chooses to perform unscheduled transmission. For the E-PUCH resource, if the non-scheduled E-PUCH resource is available at this time, the authorized scheduling E-PUCH resource and all non-scheduled E-PUCH resources are used for non-scheduled transmission; otherwise, the authorized scheduling E-PUCH resource is used. Unscheduled transmission. The non-scheduled HARQ Process ID corresponding to the current transmission is sent to the Node B. If there is both the uplink unscheduled transmission and the uplink scheduling transmission requirement, the UE requests the Node B to authorize the scheduling of the E-PUCH resource for the scheduled transmission requirement. But the UE needs to be based on some established policy. Select whether to perform scheduled transmission or non-scheduled transmission at this time. For the E-PUCH resource, if the non-scheduled E-PUCH resource is available at this time, the authorized scheduling E-PUCH resource and all non-scheduled E-PUCH resources are used for non-scheduled or scheduled transmission; otherwise, the authorized scheduling E-PUCH is used. Resources are non-scheduled or scheduled for transmission. The non-scheduled or scheduled HARQ Process ID corresponding to the transmission is sent to the Node B; in addition, the HARQ processing of the scheduling resource and the non-scheduled resource should be performed independently. In addition, if the UE decides to perform the unscheduled transmission at this time, the uplink scheduling transmission state information may still be reported in the form of the MAC-e PDU in the E-PUCH channel to request the Node B to allocate the new scheduling E-PUCH resource. In another step S106, the non-scheduled E-PUCH resource is configured by the RNC, and the UE requests the Node B to allocate the scheduled E-PUCH resource. In a scheduling period, such as an E-PUCH TTI, if only the non-scheduled If the E-PUCH resource is available, the UE chooses to send the non-scheduled service, and cannot select to send the scheduling service. If only the scheduled E-PUCH resource is available, the UE chooses to send the scheduling service, and cannot select to send the non-scheduled service; if not, the scheduling and scheduling E- The PUCH resources are available at the same time, and the UE uses all non-scheduled and scheduled resources and selects scheduled transmission or non-scheduled transmission according to some established policy. In the two implementations of the step S106, the manner of using the scheduling resource and the non-scheduled resource simultaneously includes: scheduling and non-scheduled channelization code resources and power resources of the same time slot; scheduling and non-scheduling channels of different time slots Code resources and power resources. Specifically, when the scheduling and non-scheduling code resources are distributed in different time slots, the scheduling and non-scheduled channelization code resources and power resources of different time slots are simultaneously used; when the scheduling and non-scheduling code resources are distributed in the same time slot, The scheduling and non-scheduled channelization code resources and power resources of the time slot can be used simultaneously, or only the scheduled or unscheduled channelization code resources are used, such as selecting the channelization code with a relatively small SF, and scheduling and non-distribution The scheduled power resources are added. In step S108, in an E-DCH transmission process, the Node B distinguishes the current transmission according to the received HARQ Process ID and refers to the different HARQ Process IDs configured for scheduling and non-scheduled transmission in step S104. It is also a non-scheduled transmission and is processed accordingly. In step S110, the Node B selects a corresponding allocated E-HICH channelization code channel for the received scheduling or non-scheduled service, and sends a HARQ reception confirmation indication message to the UE. That is, for the scheduling service, the E-HICH channelization code previously indicated by the E-AGCH is selected to transmit the HARQ reception confirmation indication message; for the non-scheduled service, the E-HICH channelization code statically configured by the higher layer signaling is selected to transmit the HARQ reception confirmation. Indicate the message. In step S12, after receiving the E-DCH transmission, the UE receives the corresponding E-HICH channelization code resource according to the service type sent by the UE and the scheduling service and the non-scheduled service in step S102. The allocated E-HICH channelized code channel, and further receives the HARQ reception confirmation indication message. That is, for the scheduling service, the E-HICH channelized code channel that has been previously indicated by the E-AGCH is selected to be received; for the non-scheduled service, the E-HICH channelized code channel that is statically configured by the higher layer signaling is selected and received. The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Claims

The present invention provides a method for sharing a non-scheduled resource and a scheduling resource, which includes the following steps: a first step of allocating an E-HICH channel for a non-scheduled service and a scheduling service; and a second step of Scheduling services to allocate different hybrid automatic repeat request processing identifiers;

The third step, the user equipment selects to send the non-scheduled service or the scheduled service, and sends the corresponding hybrid automatic repeat request processing identifier to the node B;

In a fourth step, the Node B distinguishes the non-scheduled service and the scheduled service according to the hybrid automatic repeat request processing identifier, and processes the same;

In a fifth step, the Node B sends a hybrid automatic repeat request acknowledgement indication message to the user equipment by selecting an unscheduled or scheduled E-HICH channel;

In a sixth step, the user equipment determines to receive the hybrid automatic repeat request acknowledgement indication indication message on the unscheduled or scheduled E-HICH channel according to the selected service type. The method for sharing non-scheduled resources and scheduling resources according to claim 1, wherein in the first step, the E-HICH channelization code of the unscheduled service is configured by high layer signaling. The method for sharing non-scheduled resources and scheduling resources according to claim 1, wherein in the first step, the E-HICH channelization code of the scheduling service is dynamically configured by the Node B, and It is sent to the user equipment through the E-AGCH. The method for sharing non-scheduled resources and scheduling resources according to claim 1, wherein in the second step, the hybrid automatic repeat request processing flag is configured by system definition or higher layer signaling. The method for sharing non-scheduled resources and scheduling resources according to claim 1, wherein in the third step, there is only uplink non-scheduled transmission request without uplink scheduling transmission request or unauthorized scheduling E. In the case of a PUCH resource, the user equipment selects to send a non-scheduled service; if there is only an uplink scheduling transmission request without an uplink non-scheduled transmission request and the user equipment requests the node B to authorize the scheduling E-PUCH resource Next, the use The user equipment selects to send the scheduling service; in the case that the upper 4 is in the non-scheduled transmission and the uplink scheduling transmission is required, the user equipment selects to send the non-scheduled service or the scheduled service according to the predetermined policy.

The non-scheduled resource and the scheduling resource sharing method according to claim 1, wherein, in the third step, when only the scheduled E-PUCH resource exists, only the scheduling type service is allowed to be transmitted; When the non-scheduled E-PUCH resource is not scheduled, only the service of the non-scheduled type is allowed to be transmitted. When the non-scheduled E-PUCH resource and the E-PUCH resource are scheduled, the user equipment selects to send the non-scheduled service according to the predetermined policy. Dispatch business.

The method for sharing non-scheduled resources and scheduling resources according to claim 1, wherein, in the third step, when there are both non-scheduled E-PUCH resources and scheduled E-PUCH resources, The scheduling resource and the non-scheduled resource are used for the scheduling service or the non-scheduled service, wherein the manner of using the scheduling resource and the non-scheduled resource simultaneously includes: scheduling and non-scheduled channelization code resources and power resources of the same time slot, Simultaneous slot scheduling and non-scheduled channelization code resources and power resources. The method for sharing non-scheduled resources and scheduling resources according to claim 1, wherein in the fourth step, the Node B simultaneously refers to the hybrid automatic retransmission allocated in the second step. The request processing identifier distinguishes between non-scheduled services and scheduled services.

The non-scheduled resource and the scheduling resource sharing method according to claim 1, wherein in the fifth step, for the non-scheduled service, the node B selects the E- configured by the high-level signaling state. Transmitting, by the HICH channelization code, the hybrid automatic repeat request acknowledgement indication message; "" in the scheduling service, the Node B transmits the hybrid automatic retransmission through an E-HICH channelization code previously indicated by the E-AGCH Request to receive a confirmation indication message.

The method for sharing a non-scheduled resource and a scheduling resource according to claim 1, wherein in the sixth step, when the service type is a non-scheduled service, the user equipment selects and receives The E-HICH channelization code channel is statically configured by the high layer signaling; in the case that the service type is the scheduling service, the user equipment selects the E-HICH channelization code channel that has been previously indicated by the E-AGCH.