CN113572590B - PUCCH (physical uplink control channel) resource multiplexing and distributing method - Google Patents
PUCCH (physical uplink control channel) resource multiplexing and distributing method Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 21
- 230000011664 signaling Effects 0.000 claims abstract description 12
- 238000004891 communication Methods 0.000 abstract description 7
- 238000013468 resource allocation Methods 0.000 abstract description 4
- 230000000875 corresponding effect Effects 0.000 description 5
- 230000003213 activating effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000002301 combined effect Effects 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005562 fading Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
Abstract
The invention provides a multiplexing and distributing method of PUCCH resources, which belongs to the field of wireless communication and comprises the following steps: the base station allocates a plurality of PUCCH resources for each UE accessed to the NR network, and informs the UE through RRCSetup signaling; wherein, different UEs share a plurality of PUCCH resources; the base station selects UE with downlink service to schedule according to a fixed period T, and selects a part of PUCCH resource for each UE with downlink service; judging whether PUCCH resources selected for the UE with the downlink service are activated or not; if not, the PUCCH resource is an idle PUCCH resource, the UE activates the idle PUCCH resource and reports the CSI, and the base station selects scheduling parameters according to the reported CSI to perform downlink service scheduling to complete a downlink service scheduling task; and deactivating the PUCCH resource selected for the UE with the downlink service. The method solves the problem of insufficient cell support maximum UE number caused by the existing PUCCH resource allocation scheme.
Description
Technical Field
The invention belongs to the technical field of communication, and particularly relates to a PUCCH (physical uplink control channel) resource multiplexing and distributing method.
Background
In the existing NR (New Radio) network, a typical resource allocation algorithm of PUCCH (PUCCH, physical Uplink Control Channel, physical uplink control channel) carrying CSI (channel state information channel state information) is: for each new access UE (User Equipment, which enables a User to communicate through a wireless communication network), the base station allocates a set of PUCCH resources for reporting CSI, and if allocation fails, the UE is denied access.
In an actual use scene, due to the limitations of factors such as channel timeliness, physical layer realization capability of the base station and the like, the number of PUCCH resources which can be supported by the base station is limited, so that the maximum number of UE (user Equipment) which can be accessed by each cell of the base station is determined by the number of PUCCH resources. For example, if the base station configures 100 parts of PUCCH resources, a maximum of 100 UEs can be accessed. The 100 UEs may actually have a high probability that no service may exist at the same time, that is, the probability that all UEs need PUCCH resources at the same time is small, and PUCCH resources should be allocated to UEs currently having services, which not only results in low use efficiency of PUCCH resources, but also limits the maximum number of accessible UEs.
Therefore, the application proposes a PUCCH resource multiplexing and allocating method.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a PUCCH resource multiplexing and distributing method.
In order to achieve the above object, the present invention provides the following technical solutions:
a PUCCH resource multiplexing and distributing method comprises the following steps:
the base station allocates a plurality of PUCCH resources for each UE accessed to the NR network, and informs the UE through RRCSetup signaling; wherein, different UEs share a plurality of PUCCH resources;
the base station selects UE with downlink service to schedule according to a fixed period T, and selects a part of PUCCH resource for each UE with downlink service;
judging whether PUCCH resources selected for the UE with the downlink service are activated or not; if not, the PUCCH resource is an idle PUCCH resource, the UE activates the idle PUCCH resource and reports the CSI, and the base station selects scheduling parameters according to the reported CSI to perform downlink service scheduling to complete a downlink service scheduling task;
and deactivating the PUCCH resource selected for the UE with the downlink service.
Preferably, the base station allocates multiple PUCCH resources for each UE accessing to the NR network, specifically including the following steps:
uniformly numbering all PUCCH resources in the region, and dividing all PUCCH resources into M groups according to N groups of resources;
a base station allocates a PUCCH resource group to each UE accessed to an NR network according to a fixed rule, the number of the PUCCH resource group is m, and the UE is informed through RRCSetup signaling; wherein, ue_id is a unique identifier of the UE in the base station, and m=ue_id% M.
Preferably, the base station selects UEs with downlink service to schedule according to a fixed period T, and for each UE with downlink service, selecting one PUCCH resource for the UE with downlink service specifically includes: the base station selects the UE with the downlink service to schedule according to the fixed period T, and randomly allocates a part of PUCCH resources in the mth group for each UE with the downlink service.
Preferably, the method further comprises: judging whether PUCCH resources selected for the UE with the downlink service are activated or not; if yes, returning to reselect a part of the PUCCH resources for the UE with the downlink service.
Preferably, after the operation of deactivating the PUCCH resource selected for the UE having the downlink service is completed, the following operations are returned:
and the base station selects the UE with the downlink service to schedule according to the fixed period T, and selects one PUCCH resource for each UE with the downlink service.
The PUCCH resource multiplexing and distributing method provided by the invention has the following beneficial effects:
the allocation method provided by the invention can enable one UE to select a plurality of different PUCCH resources, effectively solves the problem that the maximum number of the UE supported by each cell is limited by the size of a PUCCH resource pool, doubly improves the maximum number of the UE actually supported by each cell, and solves the problem that the maximum number of the UE supported by the cell is insufficient caused by the existing PUCCH resource allocation scheme.
Drawings
In order to more clearly illustrate the embodiments of the present invention and the design thereof, the drawings required for the embodiments will be briefly described below. The drawings in the following description are only some of the embodiments of the present invention and other drawings may be made by those skilled in the art without the exercise of inventive faculty.
Fig. 1 is a flowchart of a PUCCH resource multiplexing and allocating method according to embodiment 1 of the present invention.
Detailed Description
The present invention will be described in detail below with reference to the drawings and the embodiments, so that those skilled in the art can better understand the technical scheme of the present invention and can implement the same. The following examples are only for more clearly illustrating the technical aspects of the present invention, and are not intended to limit the scope of the present invention.
Example 1
The base station acquires and tracks the downlink channel condition through the CSI reported by the UE on the PUCCH channel (Physical Uplink Control Channel ), so that the base station can select proper air interface scheduling parameters when scheduling the downlink service of the UE. In the no-service period, the base station does not need the UE to report the CSI information. In a real scene, most of UE service types are burst, if the service of two UEs is just staggered in time, the two UEs can multiplex the same PUCCH resource, so that the limit of the PUCCH resource number to the maximum UE number supported by a cell can be relieved with high probability.
Among them, the UE consists of ME (Mobile Equipment) and USIM (UMTS Subsriber Module, a so-called SIM card). The UE is a user terminal device that performs data interaction with the network device through the Uu interface, and provides various service functions in the circuit domain and the packet domain for the user, including general voice, data communication, mobile multimedia, internet applications (e.g., E-mail, WWW browsing, FTP, etc.). CSI (channel state information ) is a very important and practical type of data describing a channel in wireless communication. In wireless communications, channel state information represents the propagation characteristics of a communication link that describes the combined effects of scattering, fading, power attenuation, etc. in the channel.
Based on the above idea, in combination with the existing NR protocol, the present invention provides a PUCCH resource multiplexing and allocating method, specifically, a PUCCH resource multiplexing and allocating technical solution for carrying CSI, as shown in fig. 1, the method disclosed by the present invention includes the following steps:
s1, a base station allocates a plurality of PUCCH resources for each UE accessed to an NR network, and informs the UE through RRCSetup signaling; wherein, different UEs share a plurality of PUCCH resources;
s2, the base station selects UE with downlink service to schedule according to a fixed period T, and selects a part of PUCCH resource for each UE with downlink service;
s3, judging whether the PUCCH resource in S2 is activated or not; if yes, returning to S2; if not, entering S4;
s4: for the UE distributed with the idle PUCCH resources, the UE activates the idle PUCCH resources and reports the CSI, and the base station selects scheduling parameters according to the reported CSI to perform downlink service scheduling to complete a downlink service scheduling task;
s5: and (4) deactivating the corresponding PUCCH resources in the S4, and returning to the S2.
In this embodiment, S1 specifically includes the following steps:
s1.1, uniformly numbering all PUCCH resources in a region, and dividing all PUCCH resources into M groups according to N resources of each group; in the practical environment, the signaling receiving success rate of the middle and far point users needs to be considered, and the larger the signaling message is, the message slicing transmission is caused, so that the signaling receiving success rate is affected. Since the size of N is positively correlated with the RRCSetup signaling message size, the PUCCH resources carried by the RRCSetup signaling message are limited. The maximum value of N is related to the actual deployment environment and typically takes the maximum allowed value.
S1.2, a base station allocates a PUCCH resource group for each UE accessed to an NR network according to a fixed rule, the number of the PUCCH resource group is m, and the UE is informed through RRCSetup signaling; wherein, ue_id is a unique identifier of the UE in the base station, and m=ue_id% M.
Based on the grouping scheme, S2 specifically is: the base station selects the UE with the downlink service to schedule according to the fixed period T, and randomly allocates a part of PUCCH resources in the mth group for each UE with the downlink service.
The above method is further illustrated by specific examples.
Taking an NR cell as an example, assume that the cell has 4 PUCCH resources carrying CSI, and the base station scheduling period t=1 ms, and the cell has 8 UEs in total with ue_id of 0 to 7. Wherein, the UE_ID {0,1,2,3,5} has downlink service data, wherein, the data of the UE_ID {1} needs to be scheduled for 1 time, the data of the UE_ID {0,2,3,5} needs to be scheduled for two times, and the overall processing steps are as follows:
step 1: all PUCCH resources are numbered uniformly: 0 to 3; dividing PUCCH resources into groups of fixed n=2 size, m=2 groups of resources altogether;
step 2: 8 UEs are sequentially accessed, and a group (2 parts) of PUCCH resources are allocated according to the following rules: PUCCH resource group m=ue_id% 10. At this time, all UEs have no service, mark all PUCCH resources as idle state, and the final PUCCH resource group allocation result is as follows:
| PUCCH resource group m | PUCCH resource | UE_ID |
| 0 | 0，1 | 0,2,4,6 |
| 1 | 2，3 | 1,3,5,7 |
The implementation process of step 3 to step 5 is described in three cases for different base station times of 0ms, 1ms and 2 ms:
when base station time t=0 ms:
step 3: the UE set for all downlink traffic is: ue_id {0,1,2,3,5}, sequentially allocating and activating PUCCH resources, and then the UE set with the activated PUCCH resources is: ue_id {0,1,2,3}, corresponding active PUCCH resource {0,2,1,3}. The UE of ue_id {5} does not activate PUCCH resources, does not participate in scheduling in this period, and proceeds to step 4.
Step 4: and (5) carrying out downlink scheduling on the UE_ID {0,1,2,3} with the active PUCCH resource, and after scheduling is completed, entering step (5).
Step 5: ue_id {1} has no downlink traffic data, the PUCCH resource {2} for ue_id {1} is deactivated and the corresponding resource is marked as idle.
When base station time t=1 ms:
step 3: the UE set with downlink traffic is: ue_id 0,2,3,5, where ue_id 0,2,3 has active PUCCH resource 0,1,3, ue_id 5 selects and activates PUCCH resource 2, go to step 4.
Step 4: and (5) carrying out downlink scheduling on the UE_ID {0,2,3,5} with the active PUCCH resource, and after the scheduling is completed, entering step (5).
Step 5: if the ue_id {0,2,3} has no downlink traffic data, the PUCCH resource {0,1,3} for the ue_id {0,2,3} is deactivated and the corresponding resource is marked as idle.
When base station time t=2 ms:
step 3: the UE set with downlink traffic is: ue_id {5} and ue_id {5} has active PUCCH resource {2} already, go to step 4.
Step 4: and (5) carrying out downlink scheduling on the active PUCCH resource UE_ID {5}, and after the scheduling is completed, entering step (5).
Step 5: ue_id {5} has no downlink traffic data, the PUCCH resource {2} for ue_id {5} is deactivated and the corresponding resource is marked as idle.
As can be seen, the PUCCH resource multiplexing and allocating side provided in this embodiment enlarges the number of PUCCH resource allocations, and although the cells share 4 PUCCH resources, the access and service of 8 UEs are supported, and compared with the existing access method, only 4 UEs can be supported, which is obviously improved.
The above embodiments are merely preferred embodiments of the present invention, the protection scope of the present invention is not limited thereto, and any simple changes or equivalent substitutions of technical solutions that can be obviously obtained by those skilled in the art within the technical scope of the present invention disclosed in the present invention belong to the protection scope of the present invention.
Claims (4)
1. The PUCCH resource multiplexing and distributing method is characterized by comprising the following steps:
the base station allocates a plurality of PUCCH resources for each UE accessed to the NR network, and informs the UE through RRCSetup signaling; wherein, different UEs share a plurality of PUCCH resources;
the base station selects UE with downlink service to schedule according to a fixed period T, and selects a part of PUCCH resource for each UE with downlink service;
judging whether PUCCH resources selected for the UE with the downlink service are activated or not; if not, the PUCCH resource is an idle PUCCH resource, the UE activates the idle PUCCH resource and reports the CSI, and the base station selects scheduling parameters according to the reported CSI to perform downlink service scheduling to complete a downlink service scheduling task;
deactivating PUCCH resources selected for the UE with the downlink service;
the base station allocates a plurality of PUCCH resources for each UE accessing to the NR network specifically comprises the following steps:
uniformly numbering all PUCCH resources in the region, and dividing all PUCCH resources into M groups according to N groups of resources;
a base station allocates a PUCCH resource group to each UE accessed to an NR network according to a fixed rule, the number of the PUCCH resource group is m, and the UE is informed through RRCSetup signaling; wherein, ue_id is a unique identifier of the UE in the base station, and m=ue_id% M.
2. The method for multiplexing and allocating PUCCH resources according to claim 1, wherein the base station selects UEs with downlink service for scheduling according to a fixed period T, and for each UE with downlink service, selecting a portion of the PUCCH resources specifically includes: the base station selects the UE with the downlink service to schedule according to the fixed period T, and randomly allocates a part of PUCCH resources in the mth group for each UE with the downlink service.
3. The PUCCH resource multiplexing and allocation method according to any of claims 1 to 2, further comprising: judging whether PUCCH resources selected for the UE with the downlink service are activated or not; if yes, returning to reselect a part of the PUCCH resources for the UE with the downlink service.
4. The PUCCH resource multiplexing and allocating method according to claim 3, wherein after completing the operation of deactivating the PUCCH resource selected for the UE having the downlink service, the following operations are returned:
and the base station selects the UE with the downlink service to schedule according to the fixed period T, and selects one PUCCH resource for each UE with the downlink service.
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| CN113572590A (en) | 2021-10-29 |
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