CN116248244A

CN116248244A - UCI information resource configuration method, system and device

Info

Publication number: CN116248244A
Application number: CN202310530275.5A
Authority: CN
Inventors: 喻鑫; 王志刚; 付杰尉; 沈阳
Original assignee: Guangdong Communications and Networks Institute
Current assignee: Guangdong New Generation Communication Technology Co ltd; Guangdong Communications and Networks Institute
Priority date: 2023-05-12
Filing date: 2023-05-12
Publication date: 2023-06-09
Anticipated expiration: 2043-05-12
Also published as: CN116248244B

Abstract

The invention discloses a UCI information resource allocation method, a system and a device, wherein the method comprises the following steps: responding to a Physical Uplink Control Channel (PUCCH) resource allocation event, and allocating HARQ PUCCH resources for a first service or a second service of a user terminal; dynamically scheduling the carrier wave of the HARQ PUCCH resource according to the resource utilization rate; determining a resource set for a user terminal through a URLLC HARQ time sequence relation; and when the feedback information of the first service and the feedback information of the second service conflict, carrying out carrier switching or resource switching for the user terminal according to the priority. According to the actual scheduling situation, the method and the device fully utilize the carrier aggregation technology to allocate resources for the multi-service terminal.

Description

UCI information resource configuration method, system and device

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a UCI information resource allocation method and system, and a storage medium.

Background

With the continuous development of wireless mobile communication, the number of mobile users is also increasing, and the high-speed development brings opportunities and challenges. The problems of limited spectrum resources, rapid increase of service, insufficient coverage of a base station, excessive load and the like all need new technologies to be improved.

Carrier aggregation is widely applied to wireless communication systems as a method for improving system capacity and user experience, and a more stable transmission and feedback mechanism is required for large traffic brought by the technology, wherein UCI information, especially HARQ information, plays a positive role in the downlink data transmission process.

There are various schemes for UCI information transmission in a carrier aggregation scenario, for example, the application number 202080016469.8 applies for allocating PUCCH resources among multiple carriers, and PUCCH resources can be dynamically switched according to a certain principle, which can solve the problem of insufficient PUCCH resources on a single carrier, but the technology does not reasonably manage the resource set, and if the number of terminals increases sharply, serious waste of resources is caused; the application with the application number 202080073938.X proposes to configure different time slot ratios for different carriers for solving the problem of time delay, and the scheme has a certain effect on reducing the time delay, but the different time slot ratios of two carriers bring great difficulty to scheduling.

Disclosure of Invention

According to one aspect of the invention, a UCI information resource allocation method, a UCI information resource allocation system and a UCI information resource allocation device are provided, and resources are allocated to a multi-service terminal by fully utilizing a carrier aggregation technology according to the actual scheduling situation.

In order to solve the technical problems, the first aspect of the present invention discloses a UCI information resource allocation method, which comprises the following steps:

responding to a Physical Uplink Control Channel (PUCCH) resource allocation event, and allocating HARQ PUCCH resources for a first service or a second service of a user terminal;

dynamically scheduling the carrier wave of the HARQ PUCCH resource according to the resource utilization rate;

determining a resource set for a user terminal through a URLLC HARQ time sequence relation;

and when the feedback information of the first service and the feedback information of the second service conflict, carrying out carrier switching or resource switching for the user terminal according to the priority.

In some embodiments, feedback carriers of HARQ PUCCH resources are dynamically scheduled according to resource utilization, in particular,

grouping the HARQ PUCCH resources according to an allocation rule, and allocating the HARQ PUCCH resources to a user terminal;

and when the resource utilization rate of the actual scheduling of the carrier wave meets the carrier wave switching condition, carrying out carrier wave switching according to a carrier wave switching strategy.

In some embodiments, the allocation rule comprises:

performing resource mapping according to the sequence of the user terminals, and allocating new resources to the user terminals when the HARQ PUCCH resource capacity is limited;

the carrier switching conditions include:

the utilization rate of each carrier HARQ PUCCH set is lower than a preset range;

the carrier switching strategy is:

when each scheduling is performed, calculating the resource utilization rate of two carrier HARQ PUCCH sets, and preferentially selecting carriers with higher resource utilization rates;

and when the resource utilization rate of the carrier HARQ PUCCH set meets a preset condition, releasing the PUCCH resource to perform uplink data transmission.

In some embodiments, the resource set is determined for the user terminal by a URLLC HARQ timing relationship, in particular,

and determining a resource set of the user according to the sequence of the scheduling time and the requirements of the first service and the second service processing time delay, and feeding back HARQ information by the URLLC in the adjacent uplink time slots.

In some embodiments, when feedback information of the first service and the second service collide, carrier switching or resource switching is performed for the user terminal according to the priority, specifically,

when the first service and the second service are located on the same carrier wave, and HARQ resources of the first service and the second service are overlapped in a time domain, judging whether UCI priorities of the first service and the second service are the same;

multiplexing UCI information of the first service and the second service when the priorities are the same; and when the priorities are different, carrying out resource adjustment or carrier switching of the user terminal through the DCI.

In some embodiments, when the priorities are different, resource adjustment or carrier switching of the user terminal is performed at the time of scheduling, specifically,

based on HARQ information fed back by URLLC in adjacent uplink time slots, user terminals are adjusted to other sub-time slots through DCI to feed back, and resource adjustment is carried out;

and when the number of the user terminals needing to be subjected to resource adjustment exceeds a preset threshold, carrying out carrier switching by adopting a carrier switching strategy.

In some embodiments, the determining whether the UCI priorities of the first service and the second service are the same, specifically,

acquiring a priority indication domain in downlink scheduling DCI of a first service and a second service, wherein the priority indication domain in the downlink scheduling DCI is configured consistently, and the HARQ information priorities corresponding to the first service and the second service are the same; otherwise, the method is reverse.

In some embodiments, HARQ PUCCH resources are allocated for the first traffic or the second traffic of the user terminal, specifically,

the method comprises the steps that first service and second service are distributed in each carrier, the first service is configured based on a time slot level, and the second service is configured based on a sub-time slot;

the HARQ PUCCH resources are configured to the user terminals through PUCCH-Config signaling, wherein the number of the user terminals which can be multiplexed in each time domain set is related to the PUCCH resource format and the number of symbols;

and allocating preset group resources for each user terminal, wherein the URLLC PUCCH resources allocated to each user terminal in the preset group resources are the same.

In a second aspect, a UCI information resource allocation system is disclosed, comprising:

the allocation module responds to a Physical Uplink Control Channel (PUCCH) resource allocation event and allocates HARQ PUCCH resources for a first service or a second service of the user terminal;

the scheduling module dynamically schedules the carrier waves of the HARQ PUCCH resources according to the resource utilization rate; determining a resource set for a user terminal through a URLLC HARQ time sequence relation;

and the switching module is used for carrying out carrier switching or resource switching for the user terminal according to the priority when the feedback information of the first service and the second service conflict.

In a third aspect, an apparatus is disclosed, the apparatus comprising:

a memory storing executable program code;

a processor coupled to the memory;

the processor invokes the executable program code stored in the memory to perform a UCI information resource allocation method according to any one of the preceding claims.

Compared with the prior art, the invention has the beneficial effects that:

the invention provides a UCI information resource allocation method, a UCI information resource allocation system and a UCI information resource allocation device, which are used for determining the actual scheduling condition according to the resource utilization rate under the condition of insufficient UCI resources, fully utilizing the flexibility of a carrier aggregation technology to dynamically allocate resources for a multi-service terminal, improving the freedom degree of the resources and reducing the probability of resource conflict. When feedback information of two types of services conflict, resource set switching or carrier switching is carried out, so that time delay of the services can be guaranteed, multiple carriers are not required to be set to be in different time slot configurations, and complexity of scheduling is reduced.

Drawings

Fig. 1 is a schematic flow chart of a UCI information resource allocation method according to the present invention;

fig. 2 is a schematic time domain diagram of a UCI information resource allocation method according to the present invention;

fig. 3 is a schematic diagram of UE multiplexing in HARQ sets on two carriers in a UCI information resource allocation method provided by the present invention;

fig. 4 is a schematic diagram of a scheduling scenario of a UCI information resource allocation method according to the present invention;

fig. 5 is a schematic business feedback diagram of a UCI information resource allocation method according to the present invention;

fig. 6 is a schematic flow chart of the UCI information resource allocation method according to the present invention with the same priority;

fig. 7 is a schematic flow chart of different priorities in a UCI information resource allocation method according to the present invention;

fig. 8 is a schematic structural diagram of a UCI information resource allocation apparatus according to the present invention.

Detailed Description

For a better understanding and implementation, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

The terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or modules is not necessarily limited to those steps or modules that are expressly listed or inherent to such process, method, article, or apparatus.

First, technical terms related to embodiments of the present application will be described:

the PUCCH (Physical Uplink Control Channel ) is used to carry uplink control information (uplink control information, UCI). The UCI type includes at least one of: hybrid automatic repeat request acknowledgement (hybrid automatic repeat request acknowledgment, HARQ-ACK) information, scheduling request (scheduling request, SR) information, and channel state information (channel state information, CSI). The HARQ-ACK information is used to feed back to the network device whether the physical downlink shared channel (physical downlink shared channel, PDSCH) is decoded correctly. The SR information is used to request uplink resources from the network device for transmission of uplink data on a physical uplink shared channel (physical uplink shared channel, PUSCH). The CSI is used for feeding back the downlink channel quality to the network equipment, and the network equipment selects a downlink channel with better channel quality according to the fed back CSI to perform downlink data scheduling.

UE: user Equipment, user terminal, UE may be configured with more than one radio link (e.g., component carrier (Component Carrier, CC))

The embodiment of the invention discloses a UCI information resource allocation method, which fully utilizes the flexibility of a carrier aggregation technology to dynamically allocate resources for a multi-service terminal according to the actual scheduling condition under the condition of insufficient UCI resources.

Specifically, as shown in fig. 1, the method comprises the following steps:

step S1, responding to a Physical Uplink Control Channel (PUCCH) resource allocation event, and allocating HARQ PUCCH resources for a first service or a second service of a user terminal.

The physical uplink control channel PUCCH resource allocation event may be pre-allocation of PUCCH resources when the carrier aggregation architecture of the UE is established, or may be allocation of PUCCH resources in a CA (Carrier Aggregation carrier aggregation) scenario, or may be dynamic application of PUCCH resources to the base station in a cell data scheduling process, for example, temporary PUCCH resource application.

The base station side distributes HARQ PUCCH resources to a first service and a second service respectively, wherein the first service is an eMBB (Enhanced Mobile Broadband enhanced mobile broadband) service, the second service is a URLLC service, and the distribution is carried out in each carrier. Wherein the emmbb PUCCH is configured based on slot level, the URLLC PUCCH is configured based on sub-slot, and UEs in HARQ sets on different carriers are not exactly the same.

Step S11, configuring the HARQ PUCCH resources to the user terminals through PUCCH-Config signaling, wherein the number of the user terminals which can be multiplexed in each time domain set is related to the PUCCH resource format and the number of symbols.

In the high-level maintenance resource pool, the eMBB PUCCH resources are configured to the user terminals in a set form through PUCCH-Config signaling, wherein the number of the user terminals which can be multiplexed in each time domain set is related to the PUCCH resource format and the number of symbols. As shown in fig. 3, which is a schematic diagram of multiplexing of user terminals in HARQ sets on two carriers, it can be seen that set0 on CC1 (carrier unit) may be multiplexed with UE0, UE1, UE2, UE3, UE4, UE5, UE6, UE7, and set0 on CC2 may be multiplexed with UE0, UE2, UE4, UE6, UE8, UE10, UE12, UE14.

Step S12, a preset group of resources are allocated for each user terminal, and URLLC (Ultra-Reliable Low-Latency Communications) PUCCH resources allocated for each user terminal are the same.

In the high-level maintenance resource pool, a sub-slot configuration mode is adopted on the URLLC PUCCH resource time domain, as shown in fig. 2, each sub-slot occupies 2 symbols, and 7 sub-slots are shared in one slot. The base station allocates X groups of resources for each user terminal for transmission of UCI. The number of resources configured for each sub-slot is X1, and the number of sub-slots is X2, then x=x1×x2. The allocated URLLC PUCCH resource is the same for each user terminal, and in actual use, the sub-slot is preferentially determined, and the HARQ PUCCH set to be used in the sub-slot is determined.

Step S2, dynamically scheduling the carrier wave of the HARQ PUCCH resource according to the resource utilization rate;

in the scheduling process of the MAC layer, the fed back carrier wave is dynamically scheduled according to the resource utilization rate in the eMBB HARQ set. Due to the random nature of dynamic scheduling, the higher-level maintenance resource pool will typically take into account the situation where all user terminals may be scheduled when configuring resources.

And S21, grouping the HARQ PUCCH resources according to an allocation rule, and allocating the HARQ PUCCH resources to the user terminal. Wherein the allocation rule comprises:

1. grouping M HARQ PUCCH resources to N groups in total; the number of resources in each group is M/N;

2. the high-level maintenance resource pool performs resource mapping according to the sequence of the UE ID, and when reaching the upper limit (M/N) of the HARQ PUCCH set capacity, the high-level allocates new resources to the next group of UE;

and S22, when the resource utilization rate of the actual scheduling of the carrier meets the carrier switching condition, carrying out carrier switching according to a carrier switching strategy.

Due to the random type of resource scheduling, only a part of the user terminals in each resource set are scheduled, a situation as in the right side of fig. 4 may occur. Resource utilization = number of allocated UEs/(M/N) in HARQ PUCCH set, it can be seen that the resource utilization in each resource set on the right side of fig. 4 is low. When the resource utilization rate of each carrier HARQ PUCCH set is lower than a preset range or resource scheduling is needed, the carrier switching condition is met.

And after the carrier switching condition is met, carrying out carrier switching according to a carrier switching strategy. Specifically, when scheduling is performed each time, the resource utilization rate of two carrier wave HARQ PUCCH sets is calculated, and carriers with higher resource utilization rates are preferably selected.

And when the resource utilization rate of the carrier HARQ PUCCH set meets a preset condition, releasing the PUCCH resource to perform uplink data transmission. Generally, the resource utilization rate satisfies the preset condition that the resource utilization rate does not exceed a preset value, and the preset value may be a numerical value such as 0.1 or 0, and in this application, the preset value is set to 0. When the resource utilization rate of the carrier wave HARQ PUCCH set is 0, the PUCCH resource is directly released, and the PUCCH resource does not participate in HARQ transmission and can be used for PUSCH transmission.

As shown in fig. 4, when UE0 selects the feedback of the resources in HARQ PUCCH set0 in carrier 1, at this time, the resource selection of UE1 is to determine the HARQ PUCCH set0 in carrier 1 and the HARQ PUCCH set1 resource occupancy in carrier 2, at this time, the HARQ PUCCH set0 resource occupancy in carrier 1 is 1/8, the HARQ PUCCH set1 resource occupancy in carrier 2 is 0, and the HARQ PUCCH set0 resource in carrier 1 should be allocated according to the selection rule UE 1.

And S3, determining a resource set for the user terminal through the URLLC HARQ time sequence relation.

And determining a resource set of the user according to the sequence of the scheduling time and the requirements of the first service and the second service processing time delay, and feeding back HARQ information by the URLLC in the adjacent uplink time slots. Generally, the principle of sequential first scheduling and first feedback is shown in fig. 5, and k1=3 of ebb feedback is theoretically that k1 is equal to or greater than the terminal processing capability based on the processing capability of the ebb terminal.

And S4, when feedback information of the first service and the second service conflict, carrying out carrier switching or resource switching for the user terminal according to the priority.

The feedback information collision means that when the first service and the second service are located on the same carrier, and the HARQ resources of the first service and the second service overlap in the time domain. In this case, it is determined whether UCI priorities of the first service and the second service are the same. Whether the priority of the first service is the same as that of the second service is judged by priority indicator (priority indication) domain configuration in downlink scheduling DCI, if the priority indication domain configuration in the downlink scheduling DCI is consistent, the priority of the HARQ information corresponding to the first service is the same as that of the second service, otherwise, the priority of the HARQ information corresponding to the first service is the same as that of the second service. And when the priorities of the first service and the second service are different, namely the priority indicator domain configuration in the downlink scheduling DCI of the first service and the second service is inconsistent, respectively generating two codebooks by the two services, and feeding back on respective PUCCH resources.

In step S41, when the priorities are the same, UCI information of the first service and UCI information of the second service are multiplexed, as shown in fig. 6, HARQ information of the two services may be generated into one codebook, and fed back on the same PUCCH resource. And generating a codebook by the HARQ information of the two services, adding the HARQ information bit of the URLLC downlink scheduling to the HARQ information bit of the eMBB downlink scheduling, and multiplexing the HARQ information bit on one eMBB PUCCH resource for transmission.

In step S42, when the priorities are different, the resource adjustment or carrier switching is performed through the DCI during the scheduling. Specifically, as shown in fig. 2, if the ullc PUCCH resource of the UE should be allocated to one of subslot0/subslot1/subslot2/subslot 3/subslot 4/subslot5 according to the allocation rule, the time slot just has the eMBB PUCCH resource of the UE, and at this time, the priorities of the two are different, and resource reassignment is required.

Step S421, based on the HARQ information fed back by URLLC in the adjacent uplink time slot, the user terminal is adjusted to other sub time slots through DCI to feed back, and resource adjustment is carried out. As shown in fig. 7, HARQ information is fed back in the adjacent uplink time slot based on URLLC in step S103. When initially allocating resources, each subslot allocates resources for the user terminal so as to improve the degree of freedom. Which is actually specified by DCI in the scheduling process, as shown in fig. 2, may be indicated to subslot6 or subslot 7.

Step S422, when the number of user terminals needing to carry out resource adjustment exceeds a preset threshold, carrier switching is carried out by adopting a carrier switching strategy.

If the number of the user terminals needed to perform step S421 is too large, that is, a plurality of user terminals need to feed back HARQ information of two services, namely URLLC and embbc, at the same time, the priority of the two services is different, and resources on subslot6 or subslot7 are occupied by other UEs, at this time, the carrier switching strategy in step 2 is adopted to indicate the URLLC HARQ information of the UE to another carrier for feedback; when each scheduling is performed, calculating the resource utilization rate of two carrier HARQ PUCCH sets, and preferentially selecting carriers with higher resource utilization rates; and when the resource utilization rate of the carrier HARQ PUCCH set is 0, releasing the PUCCH resource to carry out uplink data transmission.

The application provides a UCI information resource allocation method, which determines the actual scheduling condition according to the resource utilization rate under the condition of insufficient UCI resources, fully utilizes the flexibility of a carrier aggregation technology to dynamically allocate resources for a multi-service terminal, improves the freedom degree of the resources and reduces the probability of resource conflict. When feedback information of two types of services conflict, resource set switching or carrier switching is carried out, so that time delay of the services can be guaranteed, multiple carriers are not required to be set to be in different time slot configurations, and complexity of scheduling is reduced.

The application also provides a UCI information resource allocation system, which comprises:

The application also provides a base station, which comprises a memory, a processor and a computer program stored on the memory and capable of running on the processor, wherein the UCI information resource configuration method is realized by the processor when the processor executes the computer program.

As shown in fig. 8, the apparatus may include: a memory 81 in which executable program codes are stored;

a processor 82 coupled to the memory 81;

a transceiver 83 for communicating with other devices or communication networks, receiving or transmitting network messages;

a bus 84 for connecting the memory 81, the processor 82, and the transceiver 83 for internal communication.

The transceiver 83 receives the message transmitted over the network, and transmits the message to the processor 82 through the bus 84, the processor 82 calls the executable program code stored in the memory 81 through the bus 84 to process the message, and transmits the processing result to the transceiver 83 through the bus 84 to send the processing result, thereby implementing the method provided by the embodiment of the present application.

Embodiments of the present application also provide a non-transitory machine-readable storage medium having stored thereon an executable program, which when executed by a processor, causes the processor to perform the processing method as provided in the above embodiments. A memory 81 in which executable program codes are stored;

a processor 82 coupled to the memory 81;

the processor 82 invokes executable program code stored in the memory 81 for performing the UCI information resource allocation method described. The embodiment of the invention discloses a computer-readable storage medium storing a computer program for electronic data exchange, wherein the computer program causes a computer to execute the UCI information resource allocation method.

Embodiments of the present invention disclose a computer program product comprising a non-transitory computer readable storage medium storing a computer program, and the computer program is operable to cause a computer to perform the described UCI information resource allocation method.

The embodiments described above are illustrative only, and the modules illustrated as separate components may or may not be physically separate, and components shown as modules may or may not be physical modules, may be located in one place, or may be distributed over multiple network modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art will understand and implement the present invention without undue burden.

From the above detailed description of the embodiments, it will be apparent to those skilled in the art that the embodiments may be implemented by means of software plus necessary general hardware platforms, or of course by means of hardware. Based on such understanding, the foregoing technical solutions may be embodied essentially or in part in the form of a software product that may be stored in a computer-readable storage medium including Read-Only Memory (ROM), random access Memory (Random Access Memory, RAM), programmable Read-Only Memory (Programmable Read-Only Memory, PROM), erasable programmable Read-Only Memory (Erasable Programmable Read Only Memory, EPROM), one-time programmable Read-Only Memory (OTPROM), electrically erasable programmable Read-Only Memory (EEPROM), compact disc Read-Only Memory (Compact Disc Read-Only Memory, CD-ROM) or other optical disc Memory, magnetic disc Memory, tape Memory, or any other medium that can be used for computer-readable carrying or storing data.

Finally, it should be noted that: the embodiment of the present invention is disclosed only in the preferred embodiment of the present invention, and is only used for illustrating the technical scheme of the present invention, but not limiting the technical scheme; although the invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art will understand that; the technical scheme recorded in the various embodiments can be modified or part of technical features in the technical scheme can be replaced equivalently; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions.

Claims

1. The UCI information resource allocation method is characterized by comprising the following steps:

2. The UCI information resource allocation method according to claim 1, wherein feedback carriers of HARQ PUCCH resources are dynamically scheduled according to resource utilization, specifically,

and when the resource utilization rate of the actual scheduling of the carrier meets the carrier switching condition, carrying out carrier switching according to a carrier switching strategy.

3. The UCI information resource allocation method according to claim 2, wherein: the allocation rule includes:

the carrier switching conditions include:

the carrier switching strategy is:

4. The UCI information resource allocation method according to claim 1, wherein the resource set is determined for the user terminal through a URLLC HARQ timing relationship, specifically,

5. The UCI information resource allocation method according to any one of claims 1 to 4, wherein when feedback information of the first service and feedback information of the second service collide, carrier switching or resource switching is performed for the user terminal according to priority, specifically,

6. The UCI information resource allocation method according to claim 5, wherein when priorities are different, resource adjustment or carrier switching of the user terminal is performed at the time of scheduling, specifically,

7. The UCI information resource allocation method according to claim 5, wherein determining whether UCI priorities of the first service and the second service are the same, specifically,

8. The UCI information resource allocation method according to any one of claims 1-4, wherein HARQ PUCCH resources are allocated for the first service or the second service of the user terminal, specifically,

9. A UCI information resource allocation system, comprising:

10. An apparatus, comprising: the system comprises a memory, a processor and a computer program stored in the memory and capable of running on the processor, wherein the processor realizes the UCI information resource allocation method according to any one of claims 1-8 when executing the computer program.