CN101175301B - Sharing method of non-scheduled resources and scheduled resources in uplink enhanced system - Google Patents

Abstract

The present invention mainly discloses a method for sharing non-scheduling resources and scheduling resources, including the following processing: respectively assigning E-HICH channels to non-scheduling services and scheduling services; assigning different HARQ processing identifiers to non-scheduling services and scheduling services; UE Select to send non-scheduled services or scheduled services, and send the corresponding HARQ processing identification to Node B; Node B distinguishes non-scheduled services and scheduled services according to the HARQ processing identification, and processes them; Node B selects non-scheduled or scheduled services The E-HICH channel is used to send the HARQ reception confirmation indication message to the UE; the UE decides to receive the HARQ reception confirmation indication message on the non-scheduled or scheduled E-HICH channel according to the service type selected by it. Through the above technical solutions, the following beneficial effects are achieved: resource utilization is improved, resource waste or unfair treatment of user scheduling services is avoided.

Description

Sharing method of non-scheduled resources and scheduled resources in uplink enhanced system

technical field

The present invention relates to the field of communication, and more particularly, relates to a method for sharing non-scheduled resources and scheduled resources in the uplink enhancement technology of time division code division multiple access wireless communication system, which is applicable to TD-CDMA and TD-SCDMA system.

Background technique

In the third-generation mobile communication system, in order to provide higher-speed uplink packet services and improve spectrum utilization efficiency, 3GPP (3rd Generation Partnership Project) introduced high-speed uplink packet access (HSUPA) in the specifications of WCDMA and TD-CDMA systems. : High Speed Uplink Packet Access) feature, that is, the uplink enhanced feature. In the HSDPA feature, the network processing delay is reduced by introducing Adaptive Modulation and Coding (AMC: Adaptive Modulation and Coding), Hybrid Automatic Retransmission Request (HARQ: Hybrid Automatic Retransmission Request), and Node B (Node B)-controlled scheduling technology , so as to increase the uplink packet service rate and improve spectrum utilization efficiency.

Among them, due to the difference in system characteristics between the FDD system (including WCDMA) and the TDD system (including TD-CDMA and TD-SCDMA), the scheduling technology controlled by the Node B is different in the FDD and TDD systems. In the FDD system, the NodeB mainly controls the uplink service transmission rate of the UE (user equipment) by controlling the uplink transmission power of the UE (user equipment); while in the TDD system, in addition to controlling the uplink transmission power of the UE (user equipment), the Node B also needs Control the uplink physical channel resources used by UE.

The HSUPA system is also called an uplink enhanced system, or E-DCH system for short. In the TD-CDMA system, the new technologies introduced by the HSUPA system include the following:

At the MAC (Media Access Control) layer, a new MAC entity (MAC-es/MAC-e) is introduced on the UE side, located under MAC-d, responsible for HARQ retransmission, MAC-e multiplexing, and E-TFC choose. A new MAC entity (MAC-e) is introduced into the Node B on the network side, responsible for HARQ retransmission, scheduling and MAC-e demultiplexing. A new MAC entity (MAC-es) is introduced in the SRNC on the network side, which is responsible for providing MAC-es reassembly (for sequential delivery of MAC-d PDUs).

In terms of transport channels, the enhanced uplink data is carried on the newly introduced dedicated transport channel E-DCH. Each UE has at most one CCTrCH of E-DCH type, and only one E-DCH can be multiplexed in each CCTrCH. The E-DCH carries one MAC-e transport block in one TTI, and the TTI of the E-DCH is 10ms.

In the physical layer, a new E-PUCH physical channel is introduced to transmit the CCTrCH of the E-DCH type. The scheduling entity located in MAC-e of Node B is responsible for the allocation of E-PUCH physical resources. Part of the MAC-e uplink signaling is carried by two newly introduced uplink control channels, which mainly transmit information related to HARQ and auxiliary scheduling. These channels are all terminated at Node B. Including E-UCCH (E-DCH Uplink Control Channel), used to transmit information related to E-TFCI and HARQ. E-UCCH information can be transmitted in one or more time slots of E-DCH, and multiplexed with E-DCH to a group of E-PUCH in TTI. The multiplexing method of E-UCCH is to use the physical layer indicator field. E-RUCCH (E-DCH Random Access Uplink Control Channel) is used to transmit information related to auxiliary scheduling. The E-RUCCH can be mapped to random access physical channel resources, 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. Among them, E-AGCH is used to transmit authorization information, and E-HICH is used to carry uplink E-DCH HARQ indication information.

The HSUPA technology in the above TD-CDMA system supports scheduled and non-scheduled transmission methods: for non-scheduled transmission, RNC configures the E-PUCH resource for non-scheduled transmission, as long as the resource is available, UE can send E-PUCH through this resource at any time -DCH does not need to obtain scheduling authorization from Node B. This can reduce signaling load and scheduling delays. Typical services using non-scheduled transmission are SRB and GBR services. For scheduled transmission, the RNC allocates and schedules the E-PUCH resource pool, UE requests resource allocation through E-RUCCH or E-DCH, and then the Node B dynamically configures the E-PUCH resource for scheduling transmission of each UE, and only the Node B passes the E-PUCH When the AGCH channel authorizes the UE to use certain E-PUCH resources for scheduled transmission, the UE can send the E-DCH through the resources. In this method, when performing uplink transmission, the UE needs to determine whether the next TTI is used for scheduled transmission or non-scheduled transmission. Non-scheduled transmission uses non-scheduled E-PUCH resources, and scheduled services use scheduled E-PUCH resources. If neither is suitable (no resources granted for scheduled transmission, no resources available for unscheduled transmission), no transmission is performed.

The method for supporting scheduled and non-scheduled transmissions in the above-mentioned TD-CDMA system by HSUPA technology can also be applied to the TD-SCDMA system. For details, please refer to the existing 3GPP protocol. However, this method has some problems as follows: UE can only use one of non-scheduled resources or scheduled resources at any transmission time (such as 5ms TTI in TD-SCDMA system), that is, either transmits with non-scheduled resources Non-scheduled service data, or send scheduled service data with authorized scheduling resources, although Node B also knows the non-scheduled resources allocated to UE by RNC, so it can avoid allocating scheduling for the UE when the non-scheduled resources take effect in the allocation of scheduling resources resources to avoid waste of resources, but doing so may lead to unfair treatment of scheduling services among users who have both scheduling services and non-scheduling services, that is, if a user has long-term non-scheduling resources, the user’s scheduling The service will not be scheduled for a long time; and if the transmission of the scheduled service is to be taken into account, the Node B needs to allocate authorized scheduling resources to such UEs according to the normal scheduling policy, and the UE can only choose non-scheduled resources or One of the two authorized scheduling resources will inevitably result in a waste of resources.

Therefore, it can be seen from the above description that, according to the technical solution of the related art, there is a problem that non-scheduled resources and scheduled resources cannot be used at the same time, so resources cannot be fully utilized, resulting in waste of resources.

Contents of the invention

The present invention is made in consideration of the above problems, and the main purpose of the present invention is to provide a technical solution capable of using non-scheduled resources and scheduled resources at the same time.

In order to achieve the above object, the present invention provides a method for sharing non-scheduled resources and scheduled resources, which is applied to TD-CDMA or TD-SCDMA systems.

The method comprises the following steps: a first step, assigning E-HICH channels for non-scheduling services and scheduling services respectively; a second step, distributing different hybrid automatic repeat request processing identifiers for non-scheduling services and scheduling services; third step, The user equipment chooses to send non-scheduled services or scheduled services, and sends the corresponding HARQ processing identifier to Node B; in the fourth step, Node B distinguishes non-scheduled services and scheduled services according to the HARQ processing identifier, and It is processed; in the fifth step, the Node B sends a hybrid automatic repeat request reception confirmation indication message to the user equipment by selecting a non-scheduled or scheduled E-HICH channel; and in the sixth step, the user equipment selects the service type according to the It is decided to receive the HARQ reception acknowledgment indication message on the non-scheduled or scheduled E-HICH channel.

Details of each step will be described below.

Wherein, in the first step, the E-HICH channelization code of the non-scheduled service is configured through high-layer signaling, or the E-HICH channelization code of the scheduled service is dynamically configured by the Node B, and it is sent through the E-AGCH to user equipment.

In the second step, the HARQ processing identifier is configured through system definition or high-layer signaling.

In the third step, when there is only an uplink non-scheduled transmission request but no uplink scheduled transmission request, the user equipment selects to send a non-scheduled service; when there is only an uplink scheduled transmission request but no uplink non-scheduled transmission request and the user equipment requests When Node B authorizes the scheduling of E-PUCH resources, the user equipment chooses to send scheduled services; when there are both uplink non-scheduled transmission and uplink scheduled transmission requirements, the user equipment chooses to send non-scheduled services or scheduled services according to the predetermined policy business.

In the third step, when only scheduled E-PUCH resources exist, transmit scheduled or non-scheduled services; when there are only non-scheduled E-PUCH resources, only non-scheduled services are allowed to be transmitted; When there are scheduled E-PUCH resources, the user equipment chooses to send non-scheduled services or scheduled services according to a predetermined strategy.

In the third step, when there are both non-scheduled and scheduled E-PUCH resources, both scheduled and non-scheduled resources are used for scheduling or non-scheduled service transmission, and the methods used at the same time include: scheduling and non-scheduling in the same time slot Channelization code resources and power resources, scheduled and non-scheduled channelization code resources and power resources for different time slots.

In the fourth step, Node B simultaneously refers to the HARQ processing identifier assigned in the second step to distinguish between non-scheduled traffic and scheduled traffic.

In the fifth step, for non-scheduled services, Node B sends the HARQ reception confirmation indication message by selecting the E-HICH channelization code statically configured by high-level signaling; for scheduled services, Node B passes through E-HICH before The E-HICH channelization code indicated by the AGCH is used to send the hybrid automatic repeat request reception confirmation indication message.

In the sixth step, when the service type is a non-scheduled service, the user equipment selects to receive the E-HICH channelization code channel statically configured through high-level signaling; E-HICH channelization code channel indicated by E-AGCH.

Through the above technical solution, the present invention achieves the following beneficial effects: in the time division code division multiple access system, when the HSUPA technology supports scheduling and non-scheduling transmission, the E-PUCH physical channel resources of non-scheduling transmission and scheduling transmission can be used at the same time, The utilization rate of resources is improved, and resource waste or unfair treatment of user scheduling services are avoided.

Description of drawings

The accompanying drawings described here are used to provide a further understanding of the present invention and constitute a part of the application. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations to the present invention. In the attached picture:

Fig. 1 is a flowchart of a method for sharing non-scheduled resources and scheduled resources according to an embodiment of the present invention.

Detailed ways

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

first embodiment

In this embodiment, a method for sharing non-scheduled resources and scheduled resources is provided.

As shown in Figure 1, the method comprises the following steps: Step S102, assigning the E-HICH channel for non-scheduled traffic and dispatched traffic respectively; Step S104, distributing different hybrid automatic repeat request processing identifiers for non-scheduled traffic and dispatched traffic ( HARQ ProcessID); step S106, the user equipment selects to send a non-scheduled service or a scheduled service, and sends the corresponding HARQ processing identifier to the node B; step S108, the node B distinguishes the non-scheduled according to the hybrid automatic repeat request processing identifier business and scheduling business, and process it; step S110, Node B sends a hybrid automatic repeat request reception confirmation indication message to the user equipment by selecting a non-scheduled or scheduled E-HICH channel; and step S112, the user equipment according to its The selected service type decides to receive the HARQ reception acknowledgment indication message on the non-scheduled or scheduled E-HICH channel.

Each of the above steps will be described in detail below.

First, in step S102, in a cell, if the uplink enhancement technology is supported, the RNC will configure and save one or more E-HICH channelization code resources, and send them to the Node B at the same time, and the Node B configures and saves all E-HICH resources Channelization code resource.

Specifically, for non-scheduled services and scheduled services, E-HICH channelization code resources are allocated respectively. Among them, 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 non-scheduling service can be statically configured by high-level signaling. The RNC can allocate one or more E-HICH channelization code resources configured above to the UE, and then send the allocation information to the Node B and UE respectively through high-level signaling; Alternatively, one of the multiple E-HICH channelization code resources is allocated to the UE, and then the allocation information is sent to the RNC through high-layer signaling, and the RNC then sends it to the UE through high-layer signaling.

In step S104: During the E-DCH transmission process, the UE sends the Process ID processed by the HARQ entity in this transmission 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 non-scheduled services from scheduled services, the system configures different HARQ Process IDs for non-scheduled services and scheduled services. For example, the system configures 8 Process IDs in total, numbered 0...7, and the system specifies 0... Process ID 3 is configured for dispatching services, and Process IDs 4...7 are configured for non-scheduling services. Of course, it is also possible to configure different Process IDs for scheduling and non-scheduling services to Node B and UE through high-level signaling.

In step S106, before the E-DCH transmission starts, the UE configures all resources related to the unscheduled transmission and/or the scheduled transmission according to the configuration information on the network side. For the scheduling service, the UE also needs to request the allocation of E-PUCH resources for scheduled transmission to the Node B, and the Node B dynamically allocates the E-PUCH channel resources and corresponding power resources in the E-PUCH channel resource pool for scheduled transmission to the UE. During E-DCH transmission, UE can choose to send non-scheduled service or scheduled service. Of course, RNC can also provide some parameters to assist or control UE's selection. However, for the E-PUCH resources, the UE may use the E-PUCH resources for non-scheduled transmission and scheduled transmission in a shared manner to perform E-DCH transmission. When UE transmits E-DCH, if there is only uplink non-scheduled transmission requirement, no uplink scheduled transmission requirement, and no authorized scheduling E-PUCH resources, UE can use non-scheduled E-PUCH resources for non-scheduled transmission at any time , and send the non-scheduled HARQ Process ID corresponding to this transmission to the Node B; if there is only an uplink scheduled transmission requirement and no uplink non-scheduled transmission requirement, and the UE requests the Node B to authorize the scheduling of E-PUCH resources, then the UE chooses Make scheduled transfers. For E-PUCH resources, if non-scheduled E-PUCH resources are available at this time, use the authorized scheduled E-PUCH resources and all non-scheduled E-PUCH resources for scheduled transmission; otherwise, use the authorized scheduled E-PUCH resources for scheduling transmission. At the same time, the scheduling HARQ Process ID corresponding to this transmission is sent to the Node B; in some cases, such as when the scheduling resource allocation authorization can last for multiple TTIs, there are authorized scheduling E-PUCH resources, but there may be no uplink scheduling Transmission demand, if there is an uplink non-scheduled transmission demand at this time, the UE chooses to perform non-scheduled transmission. For E-PUCH resources, if unscheduled E-PUCH resources are available at this time, use the authorized scheduled E-PUCH resources and all unscheduled E-PUCH resources for unscheduled transmission; otherwise, use the authorized scheduled E-PUCH resources for unscheduled transmission Unscheduled transfers. And send the non-scheduled HARQ Process ID corresponding to this transmission to Node B;

If there are both uplink non-scheduled transmission and uplink scheduled transmission requirements, then for scheduled transmission requirements, the UE requests the Node B to authorize the scheduling of E-PUCH resources. However, the UE needs to choose whether to perform scheduled transmission or non-scheduled transmission at this time according to a predetermined policy. For E-PUCH resources, if non-scheduled E-PUCH resources are available at this time, use the authorized scheduled E-PUCH resources and all non-scheduled E-PUCH resources for non-scheduled or scheduled transmission; otherwise, use the authorized scheduled E-PUCH Resources for unscheduled or scheduled transmissions. And send the non-scheduled or scheduled HARQProcess ID corresponding to this transmission to Node B; in addition, the HARQ processing of scheduled resources and non-scheduled resources should be performed independently. In addition, if the UE decides to perform non-scheduled transmission at this time, it can still report the uplink scheduled transmission status information in the form of MAC-e PDU payload through the E-PUCH channel, so as to request Node B to allocate new scheduled E-PUCH resources.

In step S106, another implementation scheme: Configure non-scheduled E-PUCH resources through RNC and UE requests Node B to allocate scheduled E-PUCH resources. In a scheduling period, such as in an E-PUCH TTI, if only non-scheduled If E-PUCH resources are available, the UE chooses to send non-scheduled services and cannot choose to send scheduled services; if only scheduling E-PUCH resources are available, the UE chooses to send scheduled services and cannot choose to send non-scheduled services; if non-scheduled and scheduled E- If PUCH resources are available at the same time, the UE uses all non-scheduled and scheduled resources and chooses to perform scheduled transmission or non-scheduled transmission according to a predetermined strategy.

In the two implementation schemes in step S106, the ways of using scheduled resources and non-scheduled resources at the same time include: scheduled and non-scheduled channelization code resources and power resources in the same time slot; scheduled and non-scheduled channelized channelized resources in different time slots code resources and power resources. Specifically: when the scheduling and non-scheduling code resources are distributed in different time slots, use the scheduling and non-scheduling channelization code resources and power resources of different time slots at the same time; when the scheduling and non-scheduling code resources are distributed in the same time slot, you can Use the scheduled and non-scheduled channelization code resources and power resources of the time slot at the same time, or only use the scheduled or non-scheduled channelization code resources, such as selecting the channelization code with a relatively small SF, and combine the scheduled and non-scheduled channelization code resources The power resources are added.

In step S108, during an E-DCH transmission, the Node B distinguishes whether the transmission is scheduled according to the HARQ Process ID it receives and referring to the different HARQ Process IDs configured for scheduled and non-scheduled transmissions in step S104 It is still an unscheduled 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-scheduling service, and sends a HARQ reception confirmation indication message to the UE. That is, for scheduling services, select the E-HICH channelization code previously indicated by the E-AGCH to send the HARQ reception confirmation indication message; for non-scheduling services, select the E-HICH channelization code statically configured through high-level signaling to send the HARQ reception confirmation message instruction message.

In step S112, after the UE sends an E-DCH transmission, according to the type of service it sends and the E-HICH channelization code resources allocated in different ways for scheduling services and non-scheduling services in step S102, the UE receives the corresponding allocation The E-HICH channelization code channel, and further receive the HARQ reception acknowledgment indication message. That is, for the scheduling service, choose to receive the E-HICH channelization code channel indicated by the E-AGCH; for the non-scheduling service, choose to receive the E-HICH channelization code channel statically configured through high-layer signaling.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (10)

1. the shared method of non-scheduling resource and scheduling resource is applied to TD-CDMA or TD-SCDMA system, it is characterized in that, may further comprise the steps:

First step is respectively non-scheduling service and dispatching services and distributes the E-HICH channel;

Second step is handled sign for non-scheduling service and dispatching services distribute the automatic repeat requests of different mixing;

Third step, subscriber equipment select to send non-scheduling service or dispatching services, and will mix automatic repeat requests accordingly and handle sign and send to Node B;

The 4th step, described Node B is handled sign according to the automatic repeat requests of described mixing and is distinguished non-scheduling service and dispatching services, and it is handled;

The 5th step, described Node B comes to send the automatic repeat requests confirmation of receipt Indication message of mixing to described subscriber equipment by the E-HICH channel of selecting non-scheduling or scheduling; And

The 6th step, described subscriber equipment receives the automatic repeat requests confirmation of receipt of described mixing Indication message according to the type of service decision of its selection on the E-HICH of non-scheduling or scheduling channel.

2. the shared method of non-scheduling resource according to claim 1 and scheduling resource is characterized in that, in described first step, disposes the E-HICH channel code of described non-scheduling service by high-level signaling.

3. the shared method of non-scheduling resource according to claim 1 and scheduling resource is characterized in that, in described first step, dynamically disposes the E-HICH channel code of described dispatching services by Node B, and it is sent to subscriber equipment by E-AGCH.

4. the shared method of non-scheduling resource according to claim 1 and scheduling resource is characterized in that, in described second step, disposes the automatic repeat requests of described mixing by system definition or high-level signaling and handles sign.

5. the shared method of non-scheduling resource according to claim 1 and scheduling resource, it is characterized in that, in described third step, in that only being arranged, up non-scheduled transmission demand do not have under the situation of uplink scheduling transmission request, and described subscriber equipment selects to send non-scheduling service; Do not had up non-scheduled transmission request and the described Node B mandate of described user equipment requests under the situation of scheduling E-PUCH resource in that uplink scheduling transmission request is only arranged, described subscriber equipment selects to send dispatching services; Have again under the situation of uplink scheduling transmission demand in existing up non-scheduled transmission, described subscriber equipment selects to send non-scheduling service or dispatching services according to predetermined policy.

6. the shared method of non-scheduling resource according to claim 1 and scheduling resource is characterized in that, in described third step, and when having only the scheduling E-PUCH resource to exist, the business of transmitting and scheduling or non-scheduling type; When having only non-scheduling E-PUCH resource, only allow the business of the non-scheduling type of transmission; When existing non-scheduling E-PUCH resource had the scheduling E-PUCH resource again, described subscriber equipment selected to send non-scheduling service or dispatching services according to predetermined policy.

7. the shared method of non-scheduling resource according to claim 1 and scheduling resource, it is characterized in that, in described third step, when existing non-scheduling E-PUCH resource has the scheduling E-PUCH resource again, use scheduling resource and non-scheduling resource to carry out dispatching services or non-scheduling service transmission simultaneously, wherein, use the mode of described scheduling resource and non-scheduling resource to comprise simultaneously: the scheduling of same time slot and non-scheduling channel sign indicating number resource and power resource, the scheduling of different time-gap and non-scheduling channel sign indicating number resource and power resource.

8. the shared method of non-scheduling resource according to claim 1 and scheduling resource, it is characterized in that, in described the 4th step, described Node B is handled sign with reference to the automatic repeat requests of the mixing that distributes simultaneously and is distinguished non-scheduling service and dispatching services in described second step.

9. the shared method of non-scheduling resource according to claim 1 and scheduling resource, it is characterized in that, in described the 5th step, for non-scheduling service, described Node B sends the automatic repeat requests confirmation of receipt of described mixing Indication message by the E-HICH channel code of selecting the high-level signaling static configuration; For dispatching services, described Node B sends the automatic repeat requests confirmation of receipt of described mixing Indication message by the E-HICH channel code of indicating through E-AGCH before.

10. the shared method of non-scheduling resource according to claim 1 and scheduling resource, it is characterized in that, in described the 6th step, be under the situation of non-scheduling service in described type of service, described subscriber equipment selective reception is by the E-HICH channelizing code channel of high-level signaling static configuration; In described type of service is under the situation of dispatching services, the E-HICH channelizing code channel of indicating through E-AGCH before described subscriber equipment is selected.

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