CN117858235A - Method and base station for processing public PUCCH (physical uplink control channel) resources - Google Patents
Method and base station for processing public PUCCH (physical uplink control channel) resources Download PDFInfo
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Abstract
The invention relates to a method and a base station for processing public PUCCH resources, which comprises presetting an available public PUCCH resource set according to a public PUCCH configuration table specified by a 3GPP38.213 protocol, and allocating other PRB indexes except a first-hop PRB index and a second-hop PRB index corresponding to the available public PUCCH resource set to the PUSCH for scheduling. The base station can correspondingly set the available public PUCCH resource set according to the access frequency of the UE in the cell so as to be used by the UE when the PUCCH scheduling is needed, and other public PUCCH resources can be used when the PUSCH scheduling is needed, thereby avoiding the PUCCH resource waste and improving the uplink flow.
Description
Technical Field
The invention relates to the technical field of 5GNR mobile communication, in particular to a method and a base station for processing public PUCCH resources.
Background
A common PUCCH (Physical Uplink Control Channel ) in a 5GNR (New Radio) system is used for a UE (User Equipment) to feed back data on a PDSCH (Physical Downlink Shared Channel ) before receiving a dedicated PUCCH configuration. The common PUCCH has 16 configurations, as specified by the 3GPP38.213 protocol, such as the table shown in fig. 1, each row of data representation is a configuration of a common PUCCH, and the base station has to select one of the idle uses.
For most of the scenes, the access frequency of the users in the cell is not too high, and 16 PUCCH resources are not all used, so that resource waste is caused.
In view of this, it is necessary to propose a processing method and a base station that can fully utilize the common PUCCH resource, and can use a part of the idle PUCCH resource to process other data.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a method and a base station for processing public PUCCH resources, which can fully utilize the public PUCCH resources and avoid resource waste.
In order to solve the technical problem, the present invention provides a method for processing a common PUCCH resource, including the following steps:
s1, presetting an available public PUCCH resource set according to a public PUCCH configuration table regulated by a 3GPP38.213 protocol when an MAC layer is initialized;
s2, according to a preset PRB index calculation formula, calculating a first-hop PRB index and a second-hop PRB index corresponding to the public PUCCH configuration table, and generating a public PUCCH PRB occupation table;
s3, selecting a currently idle public PUCCH resource from the available public PUCCH resource set, and feeding back the currently idle public PUCCH resource to the UE through DCI; and according to the public PUCCH PRB occupation table, when PUSCH scheduling is carried out, other PRB indexes except the first-hop PRB index and the second-hop PRB index corresponding to the available public PUCCH resource set are allocated to the PUSCH for scheduling.
Further, the preset PRB index calculation formula includes:
if it isThe first hop PRB index = =>Second-hop PRB index= =>；
If it isThe first hop PRB index = =>Second-hop PRB index= =>The method comprises the steps of carrying out a first treatment on the surface of the Wherein (1)>Number of PRBs for BWP, +.>Resource number in the common PUCCH configuration table, < > for>For the offset value of the starting PRB in the common PUCCH configuration table relative to the BWP starting position,/I>And configuring the number of the initial cyclic shift index median values available in the table for the public PUCCH.
Further, in the step S3, feeding back the currently used common PUCCH resource to the UE through DCI includes: according to a preset calculation formula, calculatingAt the point ofThe DCI carries the->Transmitting to the UE; the preset calculation formula is +.>The method comprises the steps of carrying out a first treatment on the surface of the Wherein (1)>Resource number in the common PUCCH configuration table, < > for>The number of CCEs included in PDCCH for transmitting DCI, < +.>The starting CCE number for transmitting DCI.
Still further, the set of available common PUCCH resources includes PUCCH resources with resource numbers 0 to 3,8 to 11 in the common PUCCH configuration table.
In order to solve the technical problem, the invention also provides a base station for processing the public PUCCH resource, which comprises a MAC layer unit, a PUCCH PRB calculation unit and a PUCCH resource scheduling unit;
the MAC layer unit presets an available public PUCCH resource set according to a public PUCCH configuration table regulated by a 3GPP38.213 protocol when the MAC layer is initialized;
the PUCCH PRB calculation unit calculates a first-hop PRB index and a second-hop PRB index corresponding to the public PUCCH configuration table according to a preset PRB index calculation formula, and generates a public PUCCH PRB occupation table;
the PUCCH resource scheduling unit selects a currently idle public PUCCH resource from the available public PUCCH resource set, and feeds back the currently idle public PUCCH resource to the UE through DCI; and according to the public PUCCH PRB occupation table, when PUSCH scheduling is carried out, other PRB indexes except the first-hop PRB index and the second-hop PRB index corresponding to the available public PUCCH resource set are allocated to the PUSCH for scheduling.
Further, the preset PRB index calculation formula includes:
if it isThe first hop PRB index = =>Second-hop PRB index= =>；
If it isThe first hop PRB index = =>Second-hop PRB index= =>The method comprises the steps of carrying out a first treatment on the surface of the Wherein (1)>Number of PRBs for BWP, +.>Resource number in the common PUCCH configuration table, < > for>For the offset value of the starting PRB in the common PUCCH configuration table relative to the BWP starting position,/I>And configuring the number of the initial cyclic shift index median values available in the table for the public PUCCH.
Still further, the PUCCH resource scheduling unit further includes: according to a preset calculation formula, calculatingCarrying said +.>Transmitting to the UE; the preset calculation formula is thatThe method comprises the steps of carrying out a first treatment on the surface of the Wherein (1)>For the resource numbers in the common PUCCH configuration table,the number of CCEs included in PDCCH for transmitting DCI, < +.>The starting CCE number for transmitting DCI.
Still further, the set of available common PUCCH resources includes PUCCH resources with resource numbers 0 to 3,8 to 11 in the common PUCCH configuration table.
Compared with the prior art, the invention has the following beneficial effects: the invention can correspondingly set the available public PUCCH resource set according to the access frequency of the UE in the cell so as to be used by the UE when the PUCCH scheduling is needed, and other public PUCCH resources can be used when the PUSCH scheduling is needed, thereby avoiding the PUCCH resource waste and improving the uplink flow.
Drawings
Fig. 1 is a common PUCCH configuration table specified by the 3GPP38.213 protocol;
fig. 2 is a block diagram of method steps for processing a common PUCCH resource according to an embodiment of the present invention;
fig. 3 is an example of a common PUCCH PRB occupancy table according to an embodiment of the present invention;
fig. 4 is a block diagram of a base station structure for processing a common PUCCH resource according to an embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. 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 fall within the scope of the invention.
It should be noted that the terms "first," "second," and the like in the description and in the claims of the present application are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged where appropriate to implement in other sequences than those of the embodiments of the invention.
As shown in fig. 2, the method for processing a common PUCCH resource according to an embodiment of the present invention includes the following steps:
s1, presetting an available public PUCCH resource set according to a public PUCCH configuration table regulated by a 3GPP38.213 protocol when an MAC layer is initialized;
s2, calculating a first-hop PRB index and a second-hop PRB index corresponding to a public PUCCH configuration table according to a preset PRB (Physical Resource Block ) index calculation formula, and generating a public PUCCH PRB occupation table;
s3, selecting a currently idle public PUCCH resource from the available public PUCCH resource set, and feeding back the currently idle public PUCCH resource to the UE through DCI (Downlink Control Information ); and according to the public PUCCH PRB occupation table, when PUSCH scheduling is carried out, other PRB indexes except the first-hop PRB index and the second-hop PRB index corresponding to the available public PUCCH resource set are allocated to the PUSCH for scheduling.
Specifically, in this embodiment, the preset PRB index calculation formula includes:
if it isThe first hop PRB index = =>Second-hop PRB index= =>；
If it isThe first hop PRB index = =>Second-hop PRB index= =>The method comprises the steps of carrying out a first treatment on the surface of the Wherein (1)>Number of PRBs for BWP, +.>For resource number in common PUCCH configuration table, +.>For the offset value of the starting PRB relative to the BWP starting position in the common PUCCH configuration table, +.>The number of initial cyclic shift index median values available in the common PUCCH configuration table.
Specifically, according to the PRB index calculation formula, based on the common PUCCH configuration table shown in fig. 1, when the bandwidth of BWP is 100m and the number of PRBs is 273, the calculated first-hop PRB index and second-hop PRB index are respectively shown in the common PUCCH PRB occupation table shown in fig. 3. This table is only one example of the present embodiment, and in other scenarios, other values may be calculated.
When the public PUCCH resource is needed to be used for the UE, the base station selects one currently idle PUCCH resource from the available public PUCCH resource set and feeds the currently idle PUCCH resource back to the UE. In this embodiment, when the base station transmits data on the PDSCH, the common PUCCH resource currently used is fed back to the UE through DCI, which specifically includes: according to a preset calculation formula, calculatingCarry +.>And transmitted to the UE.The preset calculation formula is ∈>. Wherein,for resource number in common PUCCH configuration table, +.>The number of CCEs (Control Channel Element ) included in PDCCH (Physical Downlink Control Channel, physical downlink control channel) for transmitting DCI, < >>The starting CCE number for transmitting DCI.
In this embodiment, in step S1, the resource numbers in the 16 common PUCCH resources shown in fig. 1 may be numbered during the initialization of the MAC layerPUCCH resources of 0 to 3,8 to 11 are taken as an available common PUCCH resource set. Those skilled in the art may also use other PUCCH resources as the available common PUCCH resource set according to the actual situation, which does not affect the implementation of the present invention.
According to the common PUCCH PRB occupancy table shown in FIG. 3, resource numberingThe first-hop PRB number and the second-hop PRB number corresponding to PUCCH resources of 0 to 3,8 to 11 are {0,272,1,271}. Then other PRB indexes 2,270,3,269 may be used for PUSCH scheduling, thereby reducing PUCCH resource waste and improving uplink traffic.
As further shown in fig. 4, the base station for processing a common PUCCH resource according to the embodiment of the present invention includes a MAC (Medium Access Control ) layer unit, a PUCCH PRB calculation unit and a PUCCH resource scheduling unit.
And the MAC layer unit presets an available public PUCCH resource set according to a public PUCCH configuration table specified by a 3GPP38.213 protocol when the MAC layer is initialized.
Specifically, the MAC layer unit may number resources from the 16 common PUCCH resources shown in fig. 1 when the MAC layer is initializedPUCCH resources of 0 to 3,8 to 11 are taken as an available common PUCCH resource set. Those skilled in the art may also use other PUCCH resources as the available common PUCCH resource set according to the actual situation, which does not affect the implementation of the present invention.
And the PUCCH PRB calculation unit calculates a first-hop PRB index and a second-hop PRB index corresponding to the public PUCCH configuration table according to a preset PRB index calculation formula, and generates a public PUCCH PRB occupation table.
Specifically, in this embodiment, the preset PRB index calculation formula includes:
if it isThe first hop PRB index = =>Second-hop PRB index= =>；
If it isThe first hop PRB index = =>Second-hop PRB index= =>The method comprises the steps of carrying out a first treatment on the surface of the Wherein (1)>Number of PRBs for BWP, +.>For resource number in common PUCCH configuration table, +.>For the offset value of the starting PRB relative to the BWP starting position in the common PUCCH configuration table, +.>The number of initial cyclic shift index median values available in the common PUCCH configuration table.
Specifically, according to the PRB index calculation formula, based on the common PUCCH configuration table shown in fig. 1, when the bandwidth of BWP is 100m and the number of PRBs is 273, the calculated first-hop PRB index and second-hop PRB index are respectively shown in the common PUCCH PRB occupation table shown in fig. 3. This table is only one example of the present embodiment, and in other scenarios, other values may be calculated.
A PUCCH resource scheduling unit, which selects a currently idle public PUCCH resource from the available public PUCCH resource set and feeds back the currently idle public PUCCH resource to the UE through DCI; and according to the public PUCCH PRB occupation table, when PUSCH scheduling is carried out, other PRB indexes except the first-hop PRB index and the second-hop PRB index corresponding to the available public PUCCH resource set are allocated to the PUSCH for scheduling.
Specifically, in this embodiment, when the common PUCCH resource needs to be used for the UE, the base station selects one currently idle PUCCH resource from the available common PUCCH resource set, and feeds back the selected PUCCH resource to the UE through DCI. According to a preset calculation formula, calculatingCarry +.>And transmitted to the UE. The preset calculation formula is that. Wherein (1)>For resource number in common PUCCH configuration table, +.>The number of CCEs included in PDCCH for transmitting DCI, < +.>The starting CCE number for transmitting DCI.
Suppose that resources are numberedPUCCH resources 0 to 3,8 to 11 are used as the available common PUCCH resource set, and then the resource number +.>The first-hop PRB number and the second-hop PRB number corresponding to PUCCH resources of 0 to 3,8 to 11 are {0,272,1,271}. The PRB index that can be used for PUSCH scheduling is {2,270,3,269}, and when the base station needs to perform PUSCH scheduling, the PUCCH resource scheduling unit uses the common PUCCH resource corresponding to the PRB index of {2,270,3,269} as PUSCH scheduling, so as to avoid PUCCH resource waste and improve uplink traffic.
In summary, according to the embodiment of the present invention, the available common PUCCH resource set may be set correspondingly according to the access frequency of the UE in the cell, so that the UE may use the common PUCCH resource set when PUCCH scheduling is required, and other common PUCCH resources may use the common PUCCH resource set when PUSCH scheduling is required, thereby avoiding PUCCH resource waste and improving uplink traffic.
The foregoing examples only illustrate preferred embodiments of the invention, which are described in more detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that modifications and improvements can be made without departing from the spirit of the invention, such as combining different features of the various embodiments, which are all within the scope of the invention.
Claims (8)
1. A method of processing a common PUCCH resource, comprising the steps of:
s1, presetting an available public PUCCH resource set according to a public PUCCH configuration table regulated by a 3GPP38.213 protocol when an MAC layer is initialized;
s2, according to a preset PRB index calculation formula, calculating a first-hop PRB index and a second-hop PRB index corresponding to the public PUCCH configuration table, and generating a public PUCCH PRB occupation table;
s3, selecting a currently idle public PUCCH resource from the available public PUCCH resource set, and feeding back the currently idle public PUCCH resource to the UE through DCI; and according to the public PUCCH PRB occupation table, when PUSCH scheduling is carried out, other PRB indexes except the first-hop PRB index and the second-hop PRB index corresponding to the available public PUCCH resource set are allocated to the PUSCH for scheduling.
2. The method for processing the common PUCCH resource of claim 1, wherein the preset PRB index calculation formula includes:
if it isThe first hop PRB index = =>Second-hop PRB index =；
If it isThe first hop PRB index = =>Second-hop PRB index= =>The method comprises the steps of carrying out a first treatment on the surface of the Wherein (1)>The number of PRBs for BWP,/>resource number in the common PUCCH configuration table, < > for>For the offset value of the starting PRB in the common PUCCH configuration table relative to the BWP starting position,/I>And configuring the number of the initial cyclic shift index median values available in the table for the public PUCCH.
3. The method for processing the common PUCCH resource according to claim 1, wherein in the step S3, the currently used common PUCCH resource is fed back to the UE through DCI, including: according to a preset calculation formula, calculatingCarrying said +.>Transmitting to the UE; the preset calculation formula is +.>The method comprises the steps of carrying out a first treatment on the surface of the Wherein (1)>Resource number in the common PUCCH configuration table, < > for>The number of CCEs included in PDCCH for transmitting DCI, < +.>The starting CCE number for transmitting DCI.
4. A method of processing common PUCCH resources according to claim 2 or 3, characterised in that the set of available common PUCCH resources comprises PUCCH resources with resource numbers 0 to 3,8 to 11 in the common PUCCH configuration table.
5. A base station for processing public PUCCH resources, which is characterized by comprising a MAC layer unit, a PUCCH PRB calculation unit and a PUCCH resource scheduling unit;
the MAC layer unit presets an available public PUCCH resource set according to a public PUCCH configuration table regulated by a 3GPP38.213 protocol when the MAC layer is initialized;
the PUCCH PRB calculation unit calculates a first-hop PRB index and a second-hop PRB index corresponding to the public PUCCH configuration table according to a preset PRB index calculation formula, and generates a public PUCCH PRB occupation table;
the PUCCH resource scheduling unit selects a currently idle public PUCCH resource from the available public PUCCH resource set, and feeds back the currently idle public PUCCH resource to the UE through DCI; and according to the public PUCCH PRB occupation table, when PUSCH scheduling is carried out, other PRB indexes except the first-hop PRB index and the second-hop PRB index corresponding to the available public PUCCH resource set are allocated to the PUSCH for scheduling.
6. The base station for processing common PUCCH resources of claim 5, wherein the preset PRB index calculation formula comprises:
if it isThe first hop PRB index = =>Second-hop PRB index =；
If it isThe first hop PRB index = =>Second-hop PRB index= =>The method comprises the steps of carrying out a first treatment on the surface of the Wherein (1)>Number of PRBs for BWP, +.>Resource number in the common PUCCH configuration table, < > for>For the offset value of the starting PRB in the common PUCCH configuration table relative to the BWP starting position,/I>And configuring the number of the initial cyclic shift index median values available in the table for the public PUCCH.
7. The base station for processing common PUCCH resources of claim 5, wherein the PUCCH resource scheduling unit further comprises: according to a preset calculation formula, calculatingCarrying said +.>Transmitting to the UE; the preset calculation formula is +.>The method comprises the steps of carrying out a first treatment on the surface of the Wherein (1)>Resource number in the common PUCCH configuration table, < > for>The number of CCEs included in PDCCH for transmitting DCI, < +.>The starting CCE number for transmitting DCI.
8. The base station for processing common PUCCH resources according to claim 6 or 7, wherein the set of available common PUCCH resources comprises PUCCH resources with resource numbers 0 to 3,8 to 11 in the common PUCCH configuration table.
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