WO2012122849A1

WO2012122849A1 - Method and device for allocating uplink resource

Info

Publication number: WO2012122849A1
Application number: PCT/CN2011/084981
Authority: WO
Inventors: 胡奕; 刘蓉
Original assignee: 电信科学技术研究院
Priority date: 2011-03-16
Filing date: 2011-12-30
Publication date: 2012-09-20
Also published as: CN102131297A; CN102131297B

Abstract

Disclosed are a method and device for allocating an uplink resource. In the technical solution of embodiments of the present invention, first, priorities are configured among classes on the basis of the class of a terminal; then, among a same class, priorities within the same class are configured on the basis of the state of the terminal, and a corresponding uplink resource allocation is performed on the basis of the priority configured. In the method, occurrence of resource conflict between semi-persistent scheduling UE is prevented, at the same time, the probability is greatly increased for retransmission of data block on the basis of a synchronous non-self-adaptive HARQ scheme when retransmission is required, thus conserving PDCCH signaling overhead.

Description

Uplink resource allocation method and device

This application claims the priority of the following Chinese patent application:

It was submitted to the China Patent Office on March 16, 2011, and the application number is 201110063425.3. The invention is called the "upstream resource allocation method and equipment" Chinese patent application. Technical field

The present invention relates to the field of communications technologies, and in particular, to an uplink resource allocation method and device.

Background technique

The LTE (Long Term Evolved) system is a system that uses a shared channel for transmission, and uses the system to properly utilize the wireless resources of the system. In the LTE system, the physical resource unit that can be allocated is a PRB (Physical Resource Block). A physical resource with a width of 180 kHz in a frequency domain in a time slot is called a PRB.

The LTE standard defines two scheduling modes, dynamic scheduling and semi-persistent scheduling. For dynamic scheduling, each scheduling base station needs to send a scheduling signaling to the UE (User Equipment). For semi-persistent scheduling, the base station only needs to send a scheduling signaling to the UE at the time of activating the semi-persistent resource and releasing the semi-persistent resource, and the UE periodically uses the semi-persistent resources for data during the semi-persistent resource validity period. Send or receive. Semi-persistent scheduling is mainly used for services with a relatively narrow packet size and packet arrival time interval, such as VoIP (voice over Internet Protocol) services. The use of semi-persistent scheduling can effectively save PDCCH (Physical Downlink Control Channel, physics). Downlink control channel) signaling overhead.

In the LTE standard, two semi-persistent scheduling modes are defined for uplink, which are single interval semi-persistent scheduling and dual interval semi-persistent scheduling. The single interval semi-persistent scheduling means that the interval of each adjacent two semi-persistent resources is the same; the double interval semi-persistent scheduling, that is, the interval of adjacent semi-persistent resources, has two interval values, and the two time intervals are alternately used. As shown in Figure 1, it is a double-interval and semi-continuous adjustment in the prior art. Schematic diagram of the degree scheme.

Suppose the first packet transmitted using a semi-persistent resource is packet 1, and the packet transmitted using the semi-persistent resource is parity-grouped. The transmission interval between odd data packets is 40ms, and the transmission interval between even data packets is also 40ms. The starting position interval of the parity packet sequence (i.e., the interval of the first and second packets) is 20ms+delta, and delta is the minimum distance of two uplink subframes to which the initial transmission resource can be allocated. Dual-interval semi-persistent scheduling is only available for TDD (Time Division Duplexing) systems. For the TDD system, the values of delta in various frame structure configurations are shown in Table 1.

Table 1 Sub-frame offset (delta) values of uplink dual-interval semi-persistent scheduling in various frame structure configurations

The uplink shared channel of the LTE system uses a hybrid automatic repeat request (HARQ) mechanism to support non-adaptive HARQ and adaptive HARQ. Non-adaptive HARQ refers to the same attributes as the initial transmission when retransmission; adaptive HARQ means that some or all of the attributes of the initial transmission can be changed during retransmission, such as the allocated PRB resources, MCS (Modulation and Coding Scheme). Ways and so on. Synchronous non-adaptive HARQ retransmission does not require scheduling signaling indication; synchronous adaptive HARQ retransmission requires scheduling signaling indication. For the uplink shared channel, the normal (normal) transmission and the TTI (Transmission Time Interval) bundling are supported. When the UE transmits in the normal mode, the base station scheduler allocates a frame to the UE. For the resource, the UE uses the resource indicated by the base station to perform uplink data transmission on the corresponding node; when the UE transmits in the ΤΉBundling mode, the base station scheduler needs to allocate the time-frequency transmission resource of the entire bundle subframe for the UE-by-secondary, spanning the Bundle_Size Continuous contiguous subframes, non-adaptive retransmissions in bundles.

Uplink scheduling can be divided into two major steps: time domain scheduling and frequency domain scheduling. The time domain scheduling is used to determine the UE or service priority that participates in resource allocation. The frequency domain scheduling is based on the time domain scheduling UE priority from high to low. A PRB resource is allocated for each UE. The current time domain scheduling mainly considers the QoS (Quality of Service) attribute of the service, the channel quality of the UE, and the like, and classifies all services according to the QoS attribute of the UE service, and the different types of services have a certain priority. The priority order is determined according to factors such as the channel quality of the UE in the same type of service. When the frequency domain scheduling allocates PRB resources to each UE, firstly, according to the resource allocation of the scheduled UE, all available PRB resources of the current UE are determined, and then according to The amount of data to be transmitted of the current UE, the CQI (Channel Quality Indication) on the available PRB resources, and the like, select a continuous PRB resource that satisfies the data bearer requirement and has the best channel condition, and allocates the current PRB resource to the current UE.

For the retransmission UE, the PRB resource is first allocated according to the synchronous non-adaptive HARQ mode. If these resources are found to be allocated to the higher priority UE, the PRB resource is allocated according to the synchronous adaptive HARQ mode. Each time the resource allocation to one UE is completed, the system resource occupancy is updated, and the available PRB resources of the next UE are determined accordingly.

In the process of implementing the embodiments of the present invention, the applicant finds that the prior art has at least the following problems: The current uplink time-frequency domain scheduling determines the priority between different services according to the QoS attributes of the service, so in general, the real-time service The priority is higher than that of the non-real-time service, which can better guarantee the QoS of the high-priority service. However, for the non-real-time service with a relatively low priority, the following problems exist: (1) Since the priority of the retransmission of the non-real-time service is lower than the priority of the data of the real-time service, when the frequency domain is scheduled to be retransmitted for the non-real-time service, the retransmission data cannot be synchronized. The non-adaptive HARQ mode performs the retransmission, and can only use the synchronous adaptive HARQ mode to retransmit, which increases the PDCCH resource overhead;

(2) Since the retransmission data cannot be transmitted in segments, for the retransmission of the non-real-time service with a relatively lower priority, if the resource that satisfies the data transmission requirement is still not allocated according to the synchronous adaptive HARQ mode, the retransmission data is This time, the transmission cannot be performed. According to the synchronous HARQ mode, the retransmission can only wait for one RTT (Round Trip Time) and then participate in the scheduling. In the LTE system, the RTT period is much longer than the dynamic scheduling period. The occurrence of the above situation increases the delay of the non-real-time service, which is not conducive to guaranteeing its QoS performance.

When the current frequency domain scheduling allocates resources for each UE, the available resources of the current UE are determined according to the resource allocation of the scheduled UE, and then the optimal resources are selected among the available resources. When the system has both a semi-persistent scheduling UE and a dynamically scheduled UE, a TTI bundling UE and a normal UE, and an initial UE and a retransmission UE, the coexistence of these different types of UEs may cause various resource conflicts in the resource allocation process. Therefore, the PDCCH resource requirement is large, and the PDCCH resource is limited.

Summary of the invention

The embodiment of the invention provides an uplink resource allocation method and device, which reduces the PDCCH signaling overhead of the uplink scheduling and solves the problem that the PDCCH resource is limited.

To achieve the above objective, an embodiment of the present invention provides an uplink resource allocation method, which includes:

According to the scheduling mode of the terminal device and the data type to be transmitted, the terminal device participating in the time domain scheduling is divided into multiple terminal types, and the type priority corresponding to each terminal type is set;

Setting the device priority for each terminal device of the same terminal type according to the priority rule corresponding to the terminal device of each terminal type; According to the type priority, the uplink resources are allocated to the terminal devices of each terminal type in turn. On the other hand, an embodiment of the present invention further provides a network device, including:

The first setting module is configured to divide the terminal device that participates in the time domain scheduling into multiple terminal types according to the scheduling mode of the terminal device and the data type to be transmitted, and set the type priority corresponding to each terminal type;

a second setting module, configured to set a device priority for each terminal device of the same terminal type that is divided by the first setting module according to a priority rule corresponding to the terminal device of each terminal type;

The resource allocation module is configured to allocate uplink resources to the terminal devices of each terminal type in turn according to the type priority set by the first setting module.

Compared with the prior art, the embodiment of the invention has the following advantages:

By applying the technical solution of the embodiment of the present invention, the priority configuration between the types is first performed according to the type of the terminal, and then the priority configuration in the same type is performed according to the situation of the terminal device in the same type, and according to the configured priority, Performing corresponding uplink resource allocation, which ensures that resource conflicts do not occur between semi-persistently scheduled UEs, and greatly improves the probability that data blocks can be retransmitted according to synchronous non-adaptive HARQ mode when retransmission is required, thereby The PDCCH signaling overhead is saved.

DRAWINGS

1 is a schematic diagram of a dual-interval semi-persistent scheduling scheme in the prior art;

2 is a schematic flowchart of an uplink resource allocation method according to an embodiment of the present invention; FIG. 3 is a schematic flowchart of a time domain scheduling process of an uplink resource allocation method according to an embodiment of the present invention;

4 is a schematic flowchart of a frequency domain scheduling process of an uplink resource allocation method according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of determining available PRB resources for dynamically scheduling normal UE according to an embodiment of the present invention; Intention

FIG. 6 is a schematic diagram of determining available PRB resources of a dynamic scheduling ΤΉ bundling UE according to an embodiment of the present invention;

FIG. 7 is a schematic diagram of determining available PRB resources of a semi-persistently scheduled Normal UE according to an embodiment of the present invention;

FIG. 8 is a schematic diagram of determining available PRB resources of a semi-persistent scheduling ΤΉ bundling UE according to an embodiment of the present invention;

FIG. 9 is a schematic structural diagram of a network device according to an embodiment of the present invention.

detailed description

As described in the background art, the LTE system is a hybrid service system in which data services are dominant and multiple services coexist. In order to better meet the QoS requirements of various services and efficiently utilize spectrum resources, the LTE system introduces a shared channel mechanism to realize resource sharing among users and services in the system through dynamic resource allocation.

The LTE system uses the PDCCH transmission scheduling signaling, and after the base station scheduler completes the resource allocation to the UE, it indicates to the UE through the PDCCH. The PDCCH resources available for each downlink subframe n are limited, and the PDCCH resources are used for transmitting the scheduling signaling of the n+kth uplink subframe in addition to the scheduling signaling for transmitting the downlink subframe n (for FDD (Frequency-Division Duplex) system, k=4; For TDD systems, the value of k is related to the uplink and downlink subframe configuration), for the uplink and downlink subframe configuration of the TDD system, 0, some downlink subframes It is necessary to simultaneously send scheduling signaling of two uplink subframes. When the number of system users increases, the shared channel resources and PDCCH resources required by the scheduling users will increase. If the user services in the system are mainly small-bandwidth services, the system does not have much demand for shared channel resources, but the PDCCH resources are not required. The demand is large, and the PDCCH resource limitation occurs at this time, thereby limiting the system shared resource utilization.

Based on the above reasons, the embodiment of the present invention provides an uplink resource allocation method, and allocates uplink resources to corresponding terminal devices according to the type of the terminal device and the resource allocation priority rule in the type. The method can effectively reduce the PDCCH signaling overhead of the uplink scheduling and solve the problem of limited PDCCH resources.

FIG. 2 is a schematic flowchart of an uplink resource allocation method according to an embodiment of the present disclosure, where the method specifically includes the following steps:

Step S201: According to the scheduling mode of the terminal device and the data type to be transmitted, the terminal device participating in the time domain scheduling is divided into multiple terminal types, and the type priority corresponding to each terminal type is set.

This step is actually a priority configuration process between terminal types. In a specific process, the following specifically includes:

The priority order of each terminal type is set to a semi-persistent scheduling terminal device, a retransmission terminal device, and a preliminary transmission terminal device in order from high to low.

The foregoing three terminal types and the corresponding priority and sequence configurations are preferred examples of the embodiments of the present invention. In an actual application scenario, terminal types and their priority division criteria may be set according to requirements. Such variations do not affect the scope of protection of the present invention.

Step S202: Set a device priority for each terminal device of the same terminal type according to a priority rule corresponding to the terminal device of each terminal type.

In this step, after the priority configuration between different terminal types is completed, the process of performing priority configuration on each terminal device in the same terminal type is further refined on the priority configuration of the terminal device based on step S201. .

Corresponding to the three terminal types classified in step S201, the priority configuration rules for the corresponding terminal types in this step are as follows:

(1) Semi-persistent scheduling of terminal equipment.

Randomly arranging the semi-persistent scheduling terminal devices to form a semi-persistently scheduled terminal device queue, and setting semi-persistently scheduled terminal device queues for each semi-persistent scheduling terminal device according to the arranged order Device priority.

(2) Retransmit the terminal device.

According to the priority of the retransmission service corresponding to each retransmission terminal device, and the ordering rule of the retransmission terminal device of the same retransmission service, each retransmission terminal device is configured to be a retransmitted terminal device queue, and according to the arranged The device priority in the queue of the retransmitted terminal device is set in the order for each retransmission terminal device.

In an actual application scenario, the ordering rule of the retransmission terminal device of the same type of retransmission service is specifically: sorting the retransmission terminal devices of the same retransmission service according to the retransmission times of the retransmission transmission block .

(3) Initial transmission terminal equipment.

According to the priority of the initial transmission service corresponding to each initial transmission terminal device, and the sorting rule of the initial transmission terminal device of the same initial transmission service, each initial transmission terminal device is formed into an initial transmission terminal device queue, and arranged according to the arrangement. In this order, the device priority in the initial transmission terminal queue is set for each initial transmission terminal device.

In an actual application scenario, the ordering rules of the initial transmission terminal devices of the same initial transmission service are specifically PF algorithm or MAX C/I algorithm.

Step S203: Allocate uplink resources to terminal devices of each terminal type in sequence according to the type priority. The operation process of this step is actually based on the priority set in the first two steps. The terminal device of the corresponding terminal type is selected according to the type priority, and the uplink resource allocation is performed according to the device priority in the corresponding terminal type.

Similarly, corresponding to the terminal type divided in the first two steps, the specific processing procedure of this step is as follows:

(1) The uplink resource allocation of the terminal device is semi-continuously scheduled. The determined uplink resources are allocated to the semi-persistent scheduling terminal devices in the semi-persistently scheduled terminal device queue.

(2) After the allocation of the uplink resources of the semi-persistent scheduling terminal device is completed, the current assignable Remaining resources.

The PUSCH (Physical Uplink Shared Channel) resource currently available to the system is determined according to the resources already allocated in the current uplink subframe.

(3) Retransmitting the uplink resource allocation of the terminal device.

In the PUSCH resources currently available in the system, according to the device priorities in the retransmitted terminal device queue, the retransmission terminal devices respectively allocate resources according to the synchronous non-adaptive HARQ mode.

(4) After the uplink resource allocation of the retransmission terminal device is completed, the remaining resources that are currently assignable are organized.

According to the current resource allocation situation, the PUSCH resource currently available to the initial terminal device is determined.

(5) The uplink resource allocation of the initial transmission terminal equipment.

In the PUSCH resource that the system is currently available for the initial transmission terminal device, the resources are allocated according to the dynamic scheduling manner for each of the initial transmission terminal devices according to the device priority in the initial transmission terminal device queue.

It is to be noted that, in the above (3), if there is a retransmission terminal device that cannot allocate resources according to the synchronous non-adaptive HARQ mode, the uplink resource allocation process of the retransmission terminal device is further included, which specifically includes:

Allocating resources to the retransmission terminal device in the retransmitted terminal device queue that cannot allocate resources according to the synchronous non-adaptive HARQ mode according to the dynamic scheduling manner;

If the resource allocation is successful, the retransmission terminal device that successfully allocates the resource uses the synchronous adaptive HARQ mode for retransmission. If the resource allocation fails, the data transmission is not performed on the retransmission terminal device that fails to allocate the resource in the current uplink subframe.

It should be further noted that the foregoing dynamic scheduling mode for the retransmission terminal device and the dynamic scheduling mode for the initial transmission terminal device in (5) are all allocated resources according to the dynamic scheduling manner. Cheng, specifically including:

First, determining a PRB resource that is currently available to the terminal device; and then selecting an optimal continuous PRB resource for the terminal device according to the amount of data to be transmitted and the channel quality on each PRB, and assigning the terminal to the terminal device .

In a practical application scenario, the foregoing process for determining a PRB resource currently available to a terminal device includes: determining, in a resource other than a resource that may be in conflict with resources allocated to other terminal devices, determining that the terminal device is currently available. PRB resources.

Through such processing, resource conflicts caused by unreasonable resource allocation can be further avoided. Compared with the prior art, the embodiment of the invention has the following advantages:

The technical solutions proposed in the embodiments of the present invention are described below in conjunction with specific application scenarios. The embodiments of the present invention provide a method for allocating uplink resources, and the basic idea is to: set a higher priority for the semi-persistent scheduling UE and the retransmission UE in the time domain scheduling process, so that the semi-persistent scheduling UE and the retransmission UE are prioritized. The level is higher than the initial transmission UE; in the frequency domain scheduling resource allocation process, the timing relationship between the uplink retransmission and the initial transmission is used to predict the PRB resource that may collide when the retransmission is performed according to the synchronous non-adaptive HARQ mode, in the dynamic scheduling In the process of allocating PRB resources, try not to allocate these possible PRB resources.

The combination of the above time domain scheduling and the frequency domain scheduling can ensure that resource conflicts do not occur between semi-persistently scheduled UEs, and the probability that data blocks can be retransmitted according to synchronous non-adaptive HARQ mode when retransmission is required is improved. Thereby, the PDCCH signaling overhead is greatly saved. The principles and implementation steps of time domain scheduling and frequency domain scheduling are introduced below.

First, in the time domain scheduling process, the corresponding processing process is as shown in FIG. 3, and specifically includes the following steps:

Step S301: Classify UEs participating in time domain scheduling, and determine priorities between different types of UEs.

The UEs participating in the time domain scheduling are classified into three categories according to the scheduling mode and the data type to be transmitted by the UE, which are respectively:

The semi-persistent scheduling UE retransmits the UE and the initial UE.

The priority order of the above three types of UEs is from high to low:

Semi-persistent scheduling UE > Retransmission UE > Initial UE.

It should be noted that the semi-persistent scheduling UE in the above three types of UEs refers to the UE that has activated the semi-persistent resources, and the UE that needs to activate the semi-persistent resources for the current scheduling uplink subframe belongs to the initial UE. class.

Step S302: Determine priorities between UEs of the same type.

(1) For semi-persistently scheduled UEs, the resources of the semi-persistently scheduled UEs do not conflict with each other (the method of avoiding semi-persistent resource collisions will be described in detail in the frequency domain scheduling, and will not be repeated here), and may be randomly ordered. The semi-persistent scheduling UE priority queue determined after sorting is recorded as Qsps_UE.

(2) For the retransmission UE, the service QoS attribute of the retransmission data is first classified, and the services of different types have absolute priorities; for the retransmission data of the same type of service, according to the number of retransmissions corresponding to the retransmission TB Sorting, the more the number of retransmissions, the higher the priority, and the retransmission UE priority queue determined after sorting is Qretrans_UE.

(3) For the initial UE, sort according to the existing method, that is, first classify according to the QoS attribute of the UE service (the classification method is the same as the retransmission data).

Different types of services have an absolute priority. For example, according to the QCI priority of the service, the smaller the QCI priority value, the higher the priority of the service. The QCI priority is set by the core. Network configuration.

For UEs of the same type of service, priority is determined according to a certain method, for example, a PF algorithm or a MAX C/I algorithm.

After the foregoing priority determination is completed, the initial UE priority queue determined after the sorting is recorded as Qinit_trans_UE.

After the time domain scheduling is completed, the UE priority order between different types and within the same type is determined.

Then, in the frequency domain scheduling process, the corresponding processing process is as shown in FIG. 4, and specifically includes the following steps:

Step S401: Allocate resources for UEs in the semi-persistent scheduling UE priority queue Qsps.

For each UE in the queue Qsps, allocate resources determined according to semi-persistent scheduling to each

UE.

Step S402: Determine a PUSCH resource currently available to the system according to the PRB resource that has been allocated to the TTI bundling UE in the current uplink subframe and the PRB resource that has been allocated to the semi-persistent scheduling UE.

Step S403: The UEs in the retransmission UE priority queue QretransJJE are sequentially allocated resources according to the synchronous non-adaptive HARQ mode.

If there are UEs that fail to allocate resources according to the synchronous non-adaptive HARQ mode, the UEs are sequentially recorded in the queue QretransJJEl, and step S404 is performed.

If there is no such UE, step S405 is directly performed.

Step S404: For the UE queue QretransJJEl that cannot be retransmitted according to the synchronous non-adaptive HARQ mode, allocate resources in a manner that each UE uses dynamic scheduling.

For the UE with successful resource allocation, the synchronous adaptive HARQ method is used for retransmission.

For a UE whose resource allocation fails, this uplink subframe does not transmit data.

Step S405: Determine a PUSCH resource that can be used for the initial UE according to the previous resource allocation situation. Step S406, which is used by each UE in the initial transmission UE priority queue Qinit_trans_UE Stateful scheduling of resources.

In the above frequency domain scheduling procedure, step S401 allocates resources for the semi-persistent scheduling UE and step S403 allocates resources according to a predefined manner for the retransmission UE to allocate resources according to the synchronous non-adaptive HARQ manner.

Step S404 is that the retransmission UE allocates resources according to the synchronous adaptive HARQ mode, and step S406 allocates resources for the initial transmission UE according to the dynamic scheduling manner. For the dynamic resource allocation, first, the available PRB resources of the current UE are determined. Then, according to the amount of data to be transmitted of the UE, the channel quality on each PRB and the like, the optimal continuous PRB resource is selected among the available PRB resources.

In order to ensure that resources in the semi-persistent scheduling UE do not conflict with each other, and at the same time, it is ensured that the data block can be retransmitted according to the synchronous non-adaptive HARQ mode when performing retransmission. When determining the available PRB resources of the UE, it is necessary to fully consider various In the case of a resource conflict, the PRB resources that may be in conflict may not be counted in the available PRB resources of the current UE.

The method for determining the available PRB resources of the UE is respectively given for different types of UEs.

Embodiment 1: A method for determining a PRB resource when dynamically scheduling a UE that uses the normal mode transmission (that is, ΤΉ bundling is not activated).

The dynamic scheduling of the normal UE includes the following steps: allocating resources for synchronous adaptive HARQ retransmission and allocating resources for the initial transmission data, in order to ensure that the data to be transmitted in this time can be synchronized according to the synchronization in the case of the next retransmission. To adapt to the HARQ mode for retransmission, you need to avoid the following two types of resource conflicts.

a) The retransmission resources of the normal UE conflict with the resources of other semi-persistent scheduling UEs.

b) The retransmission resources of the normal UE conflict with other synchronous non-adaptive HARQ retransmission resources using the TTI bundling UE.

After the foregoing various factors are considered, the available PRB resources of the current normal UE may be determined. As shown in FIG. 5, the method for determining the available PRB resources of the dynamic scheduling normal UE is proposed in the embodiment of the present invention. In the figure, each small square represents a PRB resource, and the other figures below are similar and will not be described separately.

Embodiment 2: A method for determining a PRB resource when dynamically scheduling a UE transmitted by using the ΤΉ bundling method.

For the dynamic scheduling of the ΤΉbundling UE, including the allocation of resources for the synchronous adaptive HARQ retransmission and the allocation of resources for the initial transmission data, in order to ensure that the data to be transmitted can be synchronized according to the next retransmission. In the adaptive HARQ mode, the retransmission of the TTI bundling UE needs to avoid the resource conflict between the retransmission resources of the TTI bundling UE and other semi-persistent scheduling UEs.

In addition, different from the dynamic scheduling of the normal UE, when dynamically allocating resources for the TTI bundling UE, it is necessary to simultaneously consider the semi-persistent resource allocation of each subframe of the bundle and the resource occupation of the synchronous non-adaptive HARQ retransmission.

After the above various factors are considered, the available PRB resources of the current TTI bundling UE can be determined. As shown in FIG. 6, the schematic diagram of the available PRB resources for determining the dynamic scheduling TTI bundling UE is provided in the embodiment of the present invention.

Embodiment 3: A method for determining PRB resources available when dynamically scheduling UEs transmitted in the normal mode and simultaneously activating semi-continuous resources.

For the TDD system, if dual-slot semi-persistent scheduling is used, when the normal UE is dynamically scheduled to allocate semi-persistent resources, it is necessary to avoid the next semi-persistent scheduling resource of the UE (ie, semi-persistent resources of even packets) and other UE odd packets. Semi-continuous resource conflicts. After the above factors are considered, the available PRB resources of the normal UE can be determined. For example, as shown in FIG. 7 , it is a schematic diagram of determining the available PRB resources of the semi-persistently scheduled Normal UE according to the embodiment of the present invention.

For a TDD system and an FDD system that use single-slot semi-persistent scheduling, since all semi-persistent resources in the system have the same period, when the normal UE is dynamically scheduled to allocate semi-persistent resources, only the current subframe has been allocated. The resources determine the available resources of the current UE, and there is no need to consider other resource conflict situations. Embodiment 4: A method for determining a PRB resource that can be dynamically scheduled for a UE transmitted using the ΤΉ bundling method while a semi-persistent resource is activated.

According to the LTE standard, in a TDD system, a UE that has activated the TTI bundling mechanism cannot use semi-persistent scheduling, so the case of allocating semi-persistent resources to a TTI bundling UE means that it exists in the FDD system. Since the dual-span semi-persistent scheduling mechanism does not exist in the FDD system, when the semi-persistent resources are allocated for the TTI bundling UE, only the current subframe system resource occupancy situation and the subsequent continuous bundle size - one sub-frame allocated semi-persistent resources are needed. Situation to avoid semi-persistent resource conflicts between different UEs. After the above various factors are considered, the available PRB resources of the current semi-persistent scheduling TTI bundling UE can be determined. As shown in FIG. 8 , it is a schematic diagram of determining the available PRB resources of the semi-persistent scheduling TTI bundling UE according to the embodiment of the present invention.

In order to implement the technical solution of the embodiment of the present invention, the embodiment of the present invention further provides a network device, and a schematic structural diagram thereof is shown in FIG.

The first setting module 91 is configured to divide the terminal device participating in the time domain scheduling into multiple terminal types according to the scheduling mode of the terminal device and the data type to be transmitted, and set the type priority corresponding to each terminal type.

The second setting module 92 is configured to set a device priority for each terminal device of the same terminal type that is divided by the first setting module 91 according to a priority rule corresponding to the terminal device of each terminal type. The resource allocation module 93 is configured to allocate uplink resources to the terminal devices of each terminal type in turn according to the type priority set by the first setting module 91.

The first setting module 91 is specifically configured to:

Correspondingly, the second setting module 92 is specifically configured to:

Randomly arranging the semi-persistent scheduling terminal devices to form a semi-persistently scheduled terminal device queue, and setting the device priority in the semi-persistently scheduled terminal device queue for each semi-persistent scheduling terminal device according to the arranged order;

According to the priority of the retransmission service corresponding to each retransmission terminal device, and the ordering rule of the retransmission terminal device of the same retransmission service, each retransmission terminal device is configured to be a retransmitted terminal device queue, and according to the arranged The priority of the device in the queue of the retransmitted terminal device is set in the order of each retransmission terminal device; the priority of the initial transmission service corresponding to each initial transmission terminal device, and the ordering rule of the initial transmission terminal device of the same initial transmission service The initial transmission terminal devices are grouped into the initial transmission terminal device queues, and the device priority in the initial transmission terminal device queue is set for each initial transmission terminal device in the arranged order.

Further, the resource allocation module 93 is specifically configured to: allocate the determined uplink resource to each semi-persistent scheduling terminal device in the semi-persistently scheduled terminal device queue;

Determining, according to the resources already allocated in the current uplink subframe, the PUSCH resources currently available to the system; in the PUSCH resources currently available in the system, according to the device priorities in the retransmitted terminal device queue, respectively The terminal device allocates resources according to the synchronous non-adaptive HARQ method. Determining, according to the current resource allocation situation, a PUSCH resource currently available to the initial transmitting terminal device;

The resource allocation module 93 is further configured to:

In the PUSCH resource currently available in the system, according to the device priority in the retransmitted terminal device queue, after each retransmission terminal device allocates resources according to the synchronous non-adaptive HARQ mode, according to the dynamic scheduling mode, Allocating resources for the retransmission terminal device in the retransmitted terminal device queue that cannot allocate resources according to the synchronous non-adaptive HARQ mode;

Further, the resource allocation module 93, in the process of allocating resources according to the dynamic scheduling manner, is specifically used to:

Determining the PRB resources currently available to the terminal device;

Determining an optimal continuous PRB resource for the terminal device according to the amount of data to be transmitted and the channel quality of each PRB, and assigning the terminal device to the terminal device;

The determining the currently available PRB resources of the terminal device includes:

Among the resources other than the resources that may collide with the resources allocated for other terminal devices, the PRB resources currently available to the terminal device are determined.

By applying the technical solution of the embodiment of the present invention, the priority configuration between the types is first performed according to the type of the terminal, and then the priority configuration in the same type is performed according to the situation of the terminal device in the same type, and according to the configured priority, Perform corresponding uplink resource allocation, which can be guaranteed by this method. The resource conflict does not occur between the UEs that are semi-persistently scheduled, and the probability that the data block can be retransmitted according to the synchronous non-adaptive HARQ mode when the data block needs to be retransmitted is greatly improved, thereby saving the PDCCH signaling overhead.

Through the description of the above embodiments, those skilled in the art can clearly understand that the embodiments of the present invention can be implemented by hardware, or can be implemented by means of software plus necessary general hardware platform. Based on the understanding, the technical solution of the embodiment of the present invention may be embodied in the form of a software product, which may be stored in a non-volatile storage medium (which may be a CD-ROM, a USB flash drive, a mobile hard disk, etc.). A number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform the methods described in various implementations of the embodiments of the present invention.

A person skilled in the art can understand that the drawings are only a schematic diagram of a preferred implementation scenario, and the modules or processes in the drawings are not necessarily required to implement the embodiments of the present invention.

Those skilled in the art can understand that the modules in the device in the implementation scenario may be distributed in the device for implementing the scenario according to the implementation scenario description, or may be correspondingly changed in one or more devices different from the implementation scenario. The modules of the above implementation scenarios can be combined into one module, or can be further split into multiple sub-modules.

The serial numbers of the foregoing embodiments of the present invention are merely for description, and do not represent the advantages and disadvantages of the implementation scenarios. It is not limited thereto, and any changes that can be made by those skilled in the art should fall within the scope of the business restrictions of the embodiments of the present invention.

Claims

Rights request

An uplink resource allocation method, which is characterized in that:

Setting the device priority for each terminal device of the same terminal type according to the priority rule corresponding to the terminal device of each terminal type;

According to the type priority, the uplink resources are allocated to the terminal devices of each terminal type in turn.

The method according to claim 1, wherein the terminal device participating in the time domain scheduling is divided into a plurality of terminal types according to a scheduling mode of the terminal device and a data type to be transmitted, and each terminal type is set. The corresponding type priority, including:

The method according to claim 2, wherein the device priority is set for each terminal device of the same terminal type according to the priority rule corresponding to the terminal device of each terminal type, which specifically includes:

According to the priority of the retransmission service corresponding to each retransmission terminal device, and the ordering rule of the retransmission terminal device of the same retransmission service, each retransmission terminal device is configured to be a retransmitted terminal device queue, and according to the arranged The priority of the device in the queue of the retransmitted terminal device is set in the order of each retransmission terminal device; the priority of the initial transmission service corresponding to each initial transmission terminal device, and the initial transmission of the same type of initial transmission service The ordering rule of the terminal device is configured, and each of the initial transmission terminal devices is configured as a queue of the initial transmission terminal device, and the device priority in the initial transmission terminal device queue is set for each initial transmission terminal device according to the arranged order.

4. The method of claim 3, wherein

The ordering rule of the retransmission terminal device of the same type of retransmission service is specifically: sorting the retransmission terminal devices of the same retransmission service according to the retransmission times of the retransmission transmission block;

The ordering rule of the initial transmission terminal device of the same initial transmission service is specifically a PF algorithm or a MAX C/I algorithm.

The method according to claim 3, wherein the assigning the uplink resource to the terminal device of each terminal type according to the type priority, specifically includes: determining, by the determined uplink resource, the terminal that is semi-persistently scheduled. Each half of the device queue continuously schedules the terminal device;

Determining, according to the resources already allocated in the current uplink subframe, the PUSCH resources currently available to the system; in the PUSCH resources currently available in the system, according to the device priorities in the retransmitted terminal device queue, respectively The terminal device allocates resources according to a synchronous non-adaptive HARQ mode;

Determining, according to the current resource allocation situation, a PUSCH resource currently available to the initial terminal device;

The method according to claim 5, wherein in the PUSCH resource currently available to the system, according to the device priority in the retransmitted terminal device queue, the retransmission terminal devices are respectively synchronized. After the resources are allocated by the non-adaptive HARQ mode, the method further includes:

According to the dynamic scheduling manner, the queues of the retransmitted terminal devices cannot be synchronized according to the synchronization. Retransmitting a terminal device that allocates resources in a HARQ manner to allocate resources;

The method according to claim 5 or 6, wherein the allocating resources according to the dynamic scheduling manner includes:

Determining the PRB resources currently available to the terminal device;

And selecting, according to the data volume to be transmitted of the terminal device and the channel quality on each PRB, an optimal continuous PRB resource for the terminal device, and assigning the resource to the terminal device.

The method of claim 7, wherein the determining the currently available PRB resource of the terminal device comprises:

9. A network device, comprising:

The network device according to claim 9, wherein the first setting module is specifically configured to: Three terminal types of initial transmission terminal equipment;

The network device according to claim 10, wherein the second setting module is specifically configured to:

The network device according to claim 10, wherein the resource allocation module is configured to: allocate the determined uplink resource to each semi-persistent scheduling terminal device in the semi-persistently scheduled terminal device queue;

Determining, according to the current resource allocation situation, a PUSCH resource currently available to the initial transmitting terminal device; In the PUSCH resource that the system is currently available for the initial transmission terminal device, the initial transmission terminal device allocates resources according to the dynamic scheduling manner according to the device priority in the initial transmission terminal device queue.

The network device according to claim 12, wherein the resource allocation module is further configured to:

The network device according to claim 12 or 13, wherein the resource allocation module is configured to: in the process of allocating resources according to a dynamic scheduling manner, specifically:

Determining the PRB resources currently available to the terminal device;