CN104837207B - A kind of resource allocation methods, base station and communication system - Google Patents

A kind of resource allocation methods, base station and communication system Download PDF

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CN104837207B
CN104837207B CN201510178890.XA CN201510178890A CN104837207B CN 104837207 B CN104837207 B CN 104837207B CN 201510178890 A CN201510178890 A CN 201510178890A CN 104837207 B CN104837207 B CN 104837207B
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cell
pucch resource
pucch
packet
identifier
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CN104837207A (en
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张敏
余龙
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Shanghai Huawei Technologies Co Ltd
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Shanghai Huawei Technologies Co Ltd
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Priority to PCT/CN2016/070652 priority patent/WO2016165425A1/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/52—Allocation or scheduling criteria for wireless resources based on load

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  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Quality & Reliability (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The embodiment of the invention discloses a kind of resource allocation methods, base station and communication system.Present invention method includes：When needing to distribute Physical Uplink Control Channel PUCCH resource for user equipment (UE), according to the cell ID of the current area obtained in advance, the cell group of the current area is determined；If the cell group of the current area is first packet cell, in current workable PUCCH resource, slot0 PUCCH resource is distributed for the UE, if the PUCCH resource of the slot0 has distributed, slot1 PUCCH resource is distributed for the UE；If the cell group of the current area is the second packet cell, in current workable PUCCH resource, slot1 PUCCH resource is distributed for the UE, if the PUCCH resource of the slot0 has distributed, slot0 PUCCH resource is distributed for the UE.The embodiment of the present invention reduces the interference of resource, improves CSI reliabilitys, improves the descending performances of LTE.

Description

Resource allocation method, base station and communication system
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a resource allocation method, a base station, and a communication system.
Background
In an LTE (Long Term Evolution) system, a User Equipment (UE) sends an Uplink Control message (UCI) to a base station eNodeB through a Physical Uplink Control Channel (PUCCH), where the UCI includes a SRI (scheduling request indicator), a Hybrid Automatic repeat request ACKnowledgement character (HARQ-ACK), and Channel State Information (CSI), where the SRI is used to indicate the UE to apply for an Uplink resource, and when the base station receives the indication, the UE is allocated a PUSCH resource, and the HARQ-ACK is used to indicate a decoding result of downlink transmission; the CSI is used to feed back the downlink channel quality related information.
At present, PUCCH Resource allocation is realized by an eNodeB allocating resources to UEs, where the eNodeB allocates a Resource identifier (Resource Index) to each UE to determine resources that can be used by the UE, and in combination with a System information Block 2 (SIB 2) message issued by a cell, the Resource identifier (Resource identifier) allocated to the UE may be specifically mapped on a certain Resource Block (RB), and if the allocated PUCCH Resource is a periodic Channel Quality Indicator (CQI) and a periodic parameter identifier (srconfig Index), the eNodeB may also allocate a period and an offset parameter identifier (srconfig Index) to each UE to determine a subframe in which the UE occupies a corresponding PUCCH Resource in what period, so as to ensure that the UE and other UEs are multiplexed on the same PUCCH Resource, and share an uplink bandwidth of the LTE System.
For the existing resource allocation mode, the PUCCH resource allocation sequence of each cell is consistent, when the eNodeB allocates PUCCH resources to the UE, all resources are sequentially allocated from the RB (usually RB0) with a smaller number near the edge of the frequency band, and avoidance on slot resources among different cells is not considered, so that no matter the number of users in each cell is small or large at that time, the users in adjacent cells interfere with each other, resulting in poor CSI demodulation performance, thereby affecting the downlink performance of the LTE system.
Disclosure of Invention
The embodiment of the invention provides a resource allocation method, a base station and a communication system, which can reduce the interference of resources, improve the reliability of CSI and improve the downlink performance of LTE.
A first aspect of the embodiments of the present invention provides a resource allocation method, which is applied to a target area in a communication system, where cells in the target area are identified as two grouped cells: a first packet cell and a second packet cell, the method comprising:
when Physical Uplink Control Channel (PUCCH) resources need to be allocated to User Equipment (UE), determining cell groups of a current cell according to a pre-acquired cell identifier of the current cell;
if the cell grouping of the current cell is the first grouping cell, allocating a slot0 PUCCH resource to the UE in the currently available PUCCH resources, and if the slot0 PUCCH resource is already allocated, allocating a slot1 PUCCH resource to the UE;
if the cell grouping of the current cell is the second grouping cell, allocating a slot1 PUCCH resource to the UE in the currently available PUCCH resources, and if the slot0 PUCCH resource is already allocated, allocating a slot0 PUCCH resource to the UE.
With reference to the first aspect of the present embodiment, in a first implementation manner of the first aspect of the present embodiment, before determining a cell group of a current cell according to a cell identifier of the current cell acquired in advance when PUCCH resources need to be allocated to user equipment UE, the method includes:
identifying the cells in the target area as two grouped cells by using the cell identification: a first packet cell and a second packet cell.
With reference to the first aspect of the embodiment of the present invention or the first implementation manner of the first aspect, in a second implementation manner of the first aspect of the embodiment of the present invention, the cell identifier is a PUCCH resource priority usage identifier;
the PUCCH resource priority usage identifier of the first packet cell is 0, the PUCCH resource priority usage identifier of the second packet cell is 1,
or,
the PUCCH resource priority usage identifier of the first packet cell is 1, the PUCCH resource priority usage identifier of the second packet cell is 0,
or,
the PUCCH resource priority usage flag of the first packet cell is OFF, the PUCCH resource priority usage flag of the second packet cell is ON,
or,
the PUCCH resource priority use identifier of the first packet cell is ON, and the PUCCH resource priority use identifier of the second packet cell is OFF.
With reference to the first aspect of the embodiment of the present invention or the first implementation manner of the first aspect, in a third implementation manner of the first aspect of the embodiment of the present invention, the cell identifier is a PCI modulo 2 post parameter of the current cell;
the parameter after the cell PCI of the first grouping cell is modulo 2 is 0, the parameter after the cell PCI of the second grouping cell is modulo 2 is 1,
or,
the parameter after the cell PCI of the first grouping cell modulo 2 is 1, and the parameter after the cell PCI of the second grouping cell modulo 2 is 0.
With reference to the first aspect of the embodiment of the present invention or the first implementation manner of the first aspect, or the second implementation manner of the first aspect, or the third implementation manner of the first aspect, in a fourth implementation manner of the first aspect of the embodiment of the present invention, the PUCCH resource is a PUCCH Format2x resource, or a PUCCH Format1x resource.
A second aspect of the embodiments of the present invention provides a base station, which is applied to a target area in a communication system, where cells in the target area are identified as two packet cells: a first packet cell and a second packet cell, the base station comprising:
a determining unit, configured to determine a cell group of a current cell according to a cell identifier of the current cell acquired in advance when a physical uplink control channel PUCCH resource needs to be allocated to a user equipment UE;
a resource allocation unit, configured to, when the determining unit determines that the cell grouping of the current cell is the first grouping cell, allocate, in currently available PUCCH resources, a slot0 PUCCH resource for the UE, and if the slot0 PUCCH resource is already allocated, allocate a slot1 PUCCH resource for the UE;
the resource allocation unit is further configured to, when the determination unit determines that the cell grouping of the current cell is the second grouping cell, allocate, in currently available PUCCH resources, a slot1 PUCCH resource to the UE, and if the slot0 PUCCH resource is already allocated, allocate a slot0 PUCCH resource to the UE.
With reference to the second aspect of the present embodiment, in a first implementation manner of the second aspect of the present embodiment, the base station further includes:
an identifying unit, configured to identify the cell in the target area as two grouped cells by using a cell identifier before the determining unit determines the cell group of the current cell: a first packet cell and a second packet cell.
With reference to the second aspect of the present embodiment or the first implementation manner of the second aspect, in a second implementation manner of the second aspect of the present embodiment, the cell identifier is a PUCCH resource priority identifier;
the PUCCH resource priority usage identifier of the first packet cell is 0, the PUCCH resource priority usage identifier of the second packet cell is 1,
or,
the PUCCH resource priority usage identifier of the first packet cell is 1, the PUCCH resource priority usage identifier of the second packet cell is 0,
or,
the PUCCH resource priority usage flag of the first packet cell is OFF, the PUCCH resource priority usage flag of the second packet cell is ON,
or,
the PUCCH resource priority use identifier of the first packet cell is ON, and the PUCCH resource priority use identifier of the second packet cell is OFF.
With reference to the second aspect of the embodiment of the present invention or the first implementation manner of the second aspect, in a third implementation manner of the second aspect of the embodiment of the present invention, the cell identifier is the PCI modulo 2 post parameter of the current cell;
the parameter after the cell PCI of the first grouping cell is modulo 2 is 0, the parameter after the cell PCI of the second grouping cell is modulo 2 is 1,
or,
the parameter after the cell PCI of the first grouping cell modulo 2 is 1, and the parameter after the cell PCI of the second grouping cell modulo 2 is 0.
With reference to the second aspect of the embodiment of the present invention or the first implementation manner of the second aspect or the second implementation manner of the second aspect or the third implementation manner of the second aspect, in a fourth implementation manner of the second aspect of the embodiment of the present invention, the PUCCH resource is a PUCCH Format2x resource or a PUCCH Format1x resource.
A third aspect of the embodiments of the present invention provides a communication system, including a UE and the base station of the second aspect.
According to the technical scheme, the embodiment of the invention has the following advantages:
according to the embodiment of the invention, before PUCCH resources are allocated to the UE, the cell to which the UE belongs is already identified as two grouped cells, when the PUCCH resources are required to be allocated to the UE, the cell grouping of the current cell is determined according to the pre-acquired cell identification of the current cell, and the resources of different time slots are allocated aiming at the situation that the current cell belongs to different grouped cells, so that the interference of the resources is reduced, the CSI reliability is improved, and the LTE downlink performance is improved.
Drawings
FIG. 1 is a schematic diagram of an embodiment of a resource allocation method according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of another embodiment of a resource allocation method in the embodiment of the present invention;
FIG. 3 is a schematic diagram of another embodiment of a resource allocation method in the embodiment of the present invention;
fig. 4 is a schematic diagram of an embodiment of a base station in the embodiment of the present invention;
fig. 5 is a schematic diagram of another embodiment of the base station in the embodiment of the present invention;
fig. 6 is a schematic diagram of an embodiment of a communication system according to an embodiment of the invention.
Detailed Description
The embodiment of the invention provides a resource allocation method, a base station and a communication system, which can reduce the interference of resources, improve the reliability of CSI and improve the downlink performance of LTE.
In order to make the technical solutions of the present invention better understood, the technical solutions in 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 obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terms "first," "second," and the like in the description and in the claims, as well as in the drawings, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that the embodiments described herein may be practiced otherwise than as specifically illustrated or described herein. Furthermore, 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 elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Some concepts that may be involved with embodiments of the present invention are described below.
In an LTE system, a User Equipment (UE) sends an Uplink Control message (UCI) to a base station eNodeB through a Physical Uplink Control Channel (PUCCH), where the UCI includes a Scheduling ReQuest Indicator (SRI), a Hybrid Automatic Repeat reQuest Acknowledgement character (HARQ-ACK), and Channel State Information (CSI), where the SRI is used to indicate the UE to apply for an Uplink resource, and the base station allocates a PUSCH resource after receiving the indication; the HARQ-ACK is used for indicating a decoding result of downlink transmission; the CSI is used to feed back the downlink channel quality related information.
3 types of PUCCH formats are defined in the LTE protocol, the information content carried by different PUCCH formats is different, and the UE selects which PUCCH format to use according to the information required to be transmitted. The first type is Format1x, which comprises Format1, Format1a and Format1b, and carries SRI information or HARQ-ACK information, or SRI information and HARQ-ACK information; the second type is Format2x, including Format2, Format2a and Format2b, which carries CSI or CSI + ACK information. The third type is a Format of Format3, which is used for carrying multiple HARQ-ACK information in carrier aggregation plus optional SRI information, and ACK and CSI multiplexing is supported starting at R11.
The Format of Format2/2a/2b is allocated from the Resource Block (RB) at the extreme edge of the band, then mixed RB (if any) is allocated, the mixed RB has the Format of Format2/2a/2b, Format1/1a/1b and Format1/1a/1b, the PUCCH Resource sequence from the edge of the band to the center is Format2/2a/2b → mixed RB → Format1/1a/1b, and the Format position of Format3 is not specified.
The PCI is called Physical Cell Identifier, i.e. Physical Cell Identifier, so that the terminal in LTE distinguishes wireless signals of different cells, the LTE system provides 504 PCIs, the concept of the 128 scrambling codes is similar to that of the TD-SCDMA system, and when network management is configured, a number between 0 and 503 is configured for a Cell.
From the Physical layer, PCI (Physical-layer Cell Identity) is composed of a Primary Synchronization Signal (PSS) and a Secondary Synchronization Signal (SSS), and can be obtained by simple operations, and the formula is as follows: the PCI is PSS +3 SSS, where PSS is 0, 1, 2 (actually 3 different PSS sequences), SSS is 0 to 167 (actually 168 different SSS sequences), and the range of PCI obtained by the above formula is from 0.. 503, so there are 504 PCIs in the physical layer, and PCI can be repeated in the network because PSS + SSS has only 504 combinations, for example, when there are 1000 cells in the network, there are only 504 PCIs PCI, and at this time, PCI needs to be multiplexed, and in general, the PCI planning principle is to allocate a specific PSS sequence (0, 1, 2) value for each sector, and allocate a specific SSS sequence (0 to 167) value for each base station, so as to avoid the problem of the same PCI between adjacent base stations.
Hybrid Automatic Repeat reQuest (HARQ) is a technology formed by combining forward error correction coding (FEC) and Automatic Repeat reQuest (ARQ).
Ack (acknowledgement), a transmission control character, which is sent by the receiving station to the sending station in data communication and indicates that the data sent has been acknowledged.
Referring to fig. 1, an embodiment of a resource allocation method in the embodiment of the present invention will be described from the perspective of a base station, where the method is applied to a target area in a communication system, and cells in the target area are identified as two packet cells: a first packet cell and a second packet cell, the method comprising:
101. when PUCCH resources need to be allocated to UE, determining the cell grouping of the current cell according to the cell identification of the current cell acquired in advance;
in this embodiment, when the base station receives Message4 in a random access process initiated by the UE, the base station allocates a PUCCH resource to the UE, and determines a cell group of a current cell according to a pre-obtained cell identifier of the current cell, where the current cell is a cell to which the UE belongs, and the current cell is in the target region and is identified as one of the two cells; the cell identifier is used to identify the cell group of the current cell.
102. If the cell grouping of the current cell is the first grouping cell, allocating a slot0 PUCCH resource to the UE in the currently available PUCCH resources, and if the slot0 PUCCH resource is already allocated, allocating a slot1 PUCCH resource to the UE;
in the LTE protocol, each radio frame is divided into 10 subframes in a resource block RB of a base station, each subframe is divided into two slots, i.e., slot0 and slot1, where slot0 refers to a low frequency band, and a high frequency band naturally corresponds according to the protocol.
When the base station determines that the current cell is the first packet cell, the slot0 PUCCH resource is preferentially allocated to the UE in the currently available PUCCH resources, and if the slot0 PUCCH resource is already allocated, the slot1 PUCCH resource is allocated to the UE;
103. if the cell grouping of the current cell is the second grouping cell, allocating a slot1 PUCCH resource to the UE in the currently available PUCCH resources, and if the slot0 PUCCH resource is already allocated, allocating a slot0 PUCCH resource to the UE.
When the base station determines that the current cell is the second grouping cell, in the currently usable PUCCH resources, slot1 PUCCH resources are preferentially allocated to the UE, and if the slot0 PUCCH resources are already allocated, slot0 PUCCH resources are allocated to the UE.
According to the embodiment of the invention, before PUCCH resources are allocated to the UE, the cell to which the UE belongs is already identified as two grouped cells, when the PUCCH resources are required to be allocated to the UE, the cell grouping of the current cell is determined according to the pre-acquired cell identification of the current cell, and the resources of different time slots are allocated aiming at the situation that the current cell belongs to different grouped cells, so that the interference of the resources is reduced, the CSI reliability is improved, and the LTE downlink performance is improved.
In the embodiment shown in fig. 1, when PUCCH resources need to be allocated to user equipment UE, before determining a cell group of a current cell according to a cell identifier of the current cell acquired in advance, the method may further include: identifying the cells in the target area as two grouped cells by using the cell identification: referring to fig. 2, a first packet cell and a second packet cell, that is, before allocating PUCCH resources to a UE, cells in the target region are identified as two packet cells, which is described below in a specific embodiment, where another embodiment of the resource allocation method in the embodiment of the present invention includes:
201. identifying cells in a target area as two grouped cells;
in this embodiment, the base station is applied to a target area in a communication system, and first identifies cells in the target area as two grouped cells: a first packet cell and a second packet cell.
202. When PUCCH resources need to be allocated to UE, determining the cell grouping of the current cell according to the cell identification of the current cell acquired in advance;
in this embodiment, when the base station receives Message4 in a random access process initiated by the UE, and when the base station allocates a PUCCH resource to the UE, the base station determines a cell group of the current cell according to a pre-obtained cell identifier of the current cell, that is, determines whether the cell group of the current cell is a first packet cell or a second packet cell, where the current cell is a cell to which the UE belongs, and the current cell is in the target region and is identified as one of the two packet cells; the cell identifier is used to identify the cell group of the current cell.
In this embodiment, the cell identifier may be a PUCCH resource priority identifier, where the PUCCH resource priority identifier may be 0 or 1, or may be OFF or ON, the two identifiers respectively correspond to the first packet cell and the second packet cell, and the PUCCH resource priority identifier of the cell may be preset or calculated in advance.
Specifically, it may be: the PUCCH resource priority use identifier of the first grouping cell is 0, and the PUCCH resource priority use identifier of the second grouping cell is 1; or the PUCCH resource priority use identifier of the first packet cell is 1, and the PUCCH resource priority use identifier of the second packet cell is 0; or the PUCCH resource priority use identifier of the first packet cell is OFF, and the PUCCH resource priority use identifier of the second packet cell is ON; or the PUCCH resource priority use identifier of the first packet cell is ON, and the PUCCH resource priority use identifier of the second packet cell is OFF.
Optionally, the cell identifier may also be a PCI modulo-2 parameter of the current cell, where the PCI modulo-2 parameter may be 0 or 1, and the two identifiers respectively correspond to the first packet cell and the second packet cell.
Specifically, the parameter after the cell PCI mod 2 of the first packet cell is 0, and the parameter after the cell PCI mod 2 of the second packet cell is 1, or the parameter after the cell PCI mod 2 of the first packet cell is 1, and the parameter after the cell PCI mod 2 of the second packet cell is 0.
203. If the cell grouping of the current cell is the first grouping cell, allocating a slot0 PUCCH resource to the UE in the currently available PUCCH resources, and if the slot0 PUCCH resource is already allocated, allocating a slot1 PUCCH resource to the UE;
when the base station determines that the current cell is the first packet cell, the slot0 PUCCH resource is preferentially allocated to the UE in the currently available PUCCH resources, and if the slot0 PUCCH resource is already allocated, the slot1 PUCCH resource is allocated to the UE;
204. if the cell grouping of the current cell is the second grouping cell, allocating a slot1 PUCCH resource to the UE in the currently available PUCCH resources, and if the slot0 PUCCH resource is already allocated, allocating a slot0 PUCCH resource to the UE.
When the base station determines that the current cell is the second grouping cell, in the currently usable PUCCH resources, slot1 PUCCH resources are preferentially allocated to the UE, and if the slot0 PUCCH resources are already allocated, slot0 PUCCH resources are allocated to the UE.
It should be noted that, the step 201 may be performed only once to identify the cell in the target area as two grouped cells, and then the steps 202 to 204 may be directly used to allocate resources to the UE, and of course, the grouped cells may be subsequently adjusted to the cell in the target area that has already identified the grouped cell, so as to allocate resources more evenly, for example, assuming that the a cell is originally identified as the first grouped cell, because of the adjustment of the subsequent cell and the change of the UE in the cell, there are more UEs in the first grouped cell, so that the resource allocation tends to allocate resources according to the resource allocation manner of the first grouped cell, and the resource allocation is still excessively concentrated on one side, so it can be said that some cells (e.g., the a cell in the first grouped cell) may be adjusted to another grouped cell, so as to balance the allocation of resources on both sides, and reasonably utilize the resources.
According to the embodiment of the invention, before PUCCH resources are allocated to the UE, the cell to which the UE belongs is already identified as two grouped cells, when the PUCCH resources are required to be allocated to the UE, the cell grouping of the current cell is determined according to the pre-acquired cell identification of the current cell, and the resources of different time slots are allocated aiming at the situation that the current cell belongs to different grouped cells, so that the interference of the resources is reduced, the CSI reliability is improved, and the LTE downlink performance is improved.
In the embodiments shown in fig. 1 and fig. 2, the PUCCH resource may be PUCCH Format2x resource, and may also be PUCCH resources in other formats such as PUCCH Format1x resource, and in order to better understand the technology, the following embodiments describe the resource allocation method described in the foregoing embodiments in detail with specific application scenarios in which the PUCCH resource is PUCCH Format2x resource. Referring to fig. 3, another embodiment of a resource allocation method according to an embodiment of the present invention includes:
301. identifying cells in a target area as two grouped cells;
in this embodiment, the base station is applied to a target area in a communication system, and first identifies cells in the target area as two grouped cells: a first packet cell and a second packet cell.
302. When PUCCH Format2x resources need to be allocated to the UE, determining the cell grouping of the current cell according to the cell identification of the current cell acquired in advance;
in this embodiment, when the base station receives a Message4 in a random access process initiated by the UE, and when the base station allocates a PUCCH Format2x resource to the UE, a cell group of the current cell is determined according to a cell identifier of the current cell obtained in advance, where the current cell is a cell to which the UE belongs, and the current cell is in the target region and is identified as one of the two grouped cells.
303. If the cell of the current cell is grouped into the first grouped cell, allocating PUCCH Format2x resources of slot0 to the UE in currently available PUCCH Format2x resources, and if the PUCCH Format2x resources of slot0 are already allocated, allocating PUCCH Format2x resources of slot1 to the UE;
in the LTE protocol, each radio frame is divided into 10 subframes in a resource block RB of a base station, each subframe is divided into two slots, i.e., slot0 and slot1, where slot0 refers to a low frequency band, and a high frequency band naturally corresponds according to the protocol.
When a base station determines that a current cell is a first packet cell, preferentially allocating a slot0 PUCCH Format2x resource to the UE in currently available PUCCH Format2x resources, and allocating a slot1 PUCCH Format2x resource to the UE if the slot0 PUCCH Format2x resource is already allocated;
304. if the cell of the current cell is grouped into the second grouped cell, in currently available PUCCH Format2x resources, allocating PUCCH Format2x resources of slot1 to the UE, and if the PUCCH Format2x resources of slot0 are already allocated, allocating PUCCH Format2x resources of slot0 to the UE.
When the base station determines that the current cell is the second grouping cell, in currently usable PUCCH Format2x resources, and in currently usable PUCCH Format2x resources, slot1 PUCCH Format2x resources are preferentially allocated to the UE, and if the slot0 PUCCH Format2x resources are already allocated, slot0 PUCCH Format2x resources are allocated to the UE.
It should be noted that, in this embodiment, the description is given by taking the allocation of the PUCCH Format2x resource as an example, in an actual application, the PUCCH resource may also be a PUCCH resource in other formats such as PUCCH Format1x resource, and the description is not limited herein.
Step 301 may be performed only once to identify the cell in the target area as two grouped cells, and then steps 302 to 304 may be directly used to allocate resources to the UE, and certainly, the grouped cells may be subsequently adjusted to the cell in the target area that has already identified the grouped cell, so as to allocate resources more evenly, for example, assuming that the a cell is originally identified as the first grouped cell, because of the adjustment of the subsequent cell and the change of the UE in the cell, there are more UEs in the first grouped cell, so that the resource allocation tends to allocate resources according to the resource allocation manner of the first grouped cell, and the resource allocation is still excessively concentrated on one side, so that some cells (e.g., the a cell in the first grouped cell) may be adjusted to another grouped cell to balance the allocation of resources on both sides, and reasonably use the resource allocation of the resources
Referring to fig. 4, the base station in the embodiment of the present invention is applied to a target area in a communication system, where cells in the target area are identified as two packet cells: a first packet cell and a second packet cell, the base station 400 comprising:
a determining unit 401, configured to determine, when a physical uplink control channel PUCCH resource needs to be allocated to a user equipment UE, a cell group of a current cell according to a pre-obtained cell identifier of the current cell;
a resource allocating unit 402, configured to, when the determining unit determines that the cell grouping of the current cell is the first grouping cell, allocate, in currently available PUCCH resources, a slot0 PUCCH resource for the UE, and if the slot0 PUCCH resource is already allocated, allocate a slot1 PUCCH resource for the UE;
the resource allocation unit 402 is further configured to, when the determination unit 401 determines that the cell grouping of the current cell is the second grouping cell, allocate, from currently available PUCCH resources, a slot1 PUCCH resource for the UE, and if the slot0 PUCCH resource is already allocated, allocate a slot0 PUCCH resource for the UE.
Optionally, the base station 400 may further include:
an identifying unit, configured to identify the cell in the target area as two grouped cells by using a cell identifier before the determining unit determines the cell group of the current cell: a first packet cell and a second packet cell.
Optionally, the cell identifier is a PUCCH resource priority identifier;
the PUCCH resource priority usage identifier of the first packet cell is 0, the PUCCH resource priority usage identifier of the second packet cell is 1,
or,
the PUCCH resource priority usage identifier of the first packet cell is 1, the PUCCH resource priority usage identifier of the second packet cell is 0,
or,
the PUCCH resource priority usage flag of the first packet cell is OFF, the PUCCH resource priority usage flag of the second packet cell is ON,
or,
the PUCCH resource priority use identifier of the first packet cell is ON, and the PUCCH resource priority use identifier of the second packet cell is OFF.
Optionally, the cell identifier is a PCI modulo-2 post parameter of the current cell;
the parameter after the cell PCI of the first grouping cell is modulo 2 is 0, the parameter after the cell PCI of the second grouping cell is modulo 2 is 1,
or,
the parameter after the cell PCI of the first grouping cell modulo 2 is 1, and the parameter after the cell PCI of the second grouping cell modulo 2 is 0.
Optionally, the PUCCH resource is a PUCCH Format2x resource, or a PUCCH Format1x resource.
The base station in the embodiment of the present invention is described above from the perspective of the modular functional entity, and the base station in the embodiment of the present invention is described below from the perspective of hardware processing. Referring to fig. 5, a base station 500 in the embodiment of the present invention is applied to a target area in a communication system, and cells in the target area are identified as two grouped cells: a first packet cell and a second packet cell, the base station includes a processor 501 (there may be one or more):
the processor 501 is configured to determine a cell group of a current cell according to a cell identifier of the current cell acquired in advance when a physical uplink control channel PUCCH resource needs to be allocated to a user equipment UE;
the processor 501 is further configured to, when the determining unit determines that the cell of the current cell is grouped into the first grouped cell, allocate, in currently available PUCCH resources, slot0 PUCCH resources for the UE, and if the slot0 PUCCH resources are already allocated, allocate slot1 PUCCH resources for the UE;
the processor 501 is further configured to, when it is determined that the cell grouping of the current cell is the second grouping cell, allocate, from currently available PUCCH resources, a slot1 PUCCH resource to the UE, and if the slot0 PUCCH resource is already allocated, allocate a slot0 PUCCH resource to the UE.
Optionally, the processor 501 is further configured to, before the determining unit determines the cell grouping of the current cell, identify the cells in the target area as two grouped cells by using a cell identifier: a first packet cell and a second packet cell.
Optionally, the cell identifier is a PUCCH resource priority identifier;
the PUCCH resource priority usage identifier of the first packet cell is 0, the PUCCH resource priority usage identifier of the second packet cell is 1,
or,
the PUCCH resource priority usage identifier of the first packet cell is 1, the PUCCH resource priority usage identifier of the second packet cell is 0,
or,
the PUCCH resource priority usage flag of the first packet cell is OFF, the PUCCH resource priority usage flag of the second packet cell is ON,
or,
the PUCCH resource priority use identifier of the first packet cell is ON, and the PUCCH resource priority use identifier of the second packet cell is OFF.
Optionally, the cell identifier is a PCI modulo-2 post parameter of the current cell;
the parameter after the cell PCI of the first grouping cell is modulo 2 is 0, the parameter after the cell PCI of the second grouping cell is modulo 2 is 1,
or,
the parameter after the cell PCI of the first grouping cell modulo 2 is 1, and the parameter after the cell PCI of the second grouping cell modulo 2 is 0.
Optionally, the PUCCH resource is a PUCCH Format2x resource, or a PUCCH Format1x resource.
Referring to fig. 6, an embodiment of a communication system 600 according to an embodiment of the present invention includes:
a user equipment UE 601, and a base station 602 as in the embodiment shown in fig. 4 above;
it is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (11)

1. A resource allocation method, applied to a target area in a communication system, wherein cells in the target area are identified as two grouped cells: a first packet cell and a second packet cell, the method comprising:
when Physical Uplink Control Channel (PUCCH) resources need to be allocated to User Equipment (UE), determining cell groups of a current cell according to a pre-acquired cell identifier of the current cell;
if the cell grouping of the current cell is the first grouping cell, allocating a slot0 PUCCH resource to the UE in the currently available PUCCH resources, and if the slot0 PUCCH resource is already allocated, allocating a slot1 PUCCH resource to the UE;
if the cell grouping of the current cell is the second grouping cell, allocating a slot1 PUCCH resource to the UE in the currently available PUCCH resources, and if the slot0 PUCCH resource is already allocated, allocating a slot0 PUCCH resource to the UE.
2. The method according to claim 1, wherein before determining the cell grouping of the current cell according to the cell identifier of the current cell acquired in advance when the PUCCH resource needs to be allocated to the user equipment UE, the method includes:
identifying the cells in the target area as two grouped cells by using the cell identification: a first packet cell and a second packet cell.
3. The method according to claim 1 or 2, wherein the cell identifier is a PUCCH resource priority usage identifier;
the PUCCH resource priority usage identifier of the first packet cell is 0, the PUCCH resource priority usage identifier of the second packet cell is 1,
or,
the PUCCH resource priority usage identifier of the first packet cell is 1, the PUCCH resource priority usage identifier of the second packet cell is 0,
or,
the PUCCH resource priority usage flag of the first packet cell is OFF, the PUCCH resource priority usage flag of the second packet cell is ON,
or,
the PUCCH resource priority use identifier of the first packet cell is ON, and the PUCCH resource priority use identifier of the second packet cell is OFF.
4. The method according to claim 1 or 2, wherein the cell identity is the current cell PCI modulo 2 post parameter;
the parameter after the cell PCI of the first grouping cell is modulo 2 is 0, the parameter after the cell PCI of the second grouping cell is modulo 2 is 1,
or,
the parameter after the cell PCI of the first grouping cell modulo 2 is 1, and the parameter after the cell PCI of the second grouping cell modulo 2 is 0.
5. The method according to claim 3, wherein the PUCCH resources are PUCCH Format2x resources or PUCCH Format1x resources.
6. A base station, for use in a target area in a communication system, wherein cells in the target area are identified as two grouped cells: a first packet cell and a second packet cell, the base station comprising:
a determining unit, configured to determine a cell group of a current cell according to a cell identifier of the current cell acquired in advance when a physical uplink control channel PUCCH resource needs to be allocated to a user equipment UE;
a resource allocation unit, configured to, when the determining unit determines that the cell grouping of the current cell is the first grouping cell, allocate, in currently available PUCCH resources, a slot0 PUCCH resource for the UE, and if the slot0 PUCCH resource is already allocated, allocate a slot1 PUCCH resource for the UE;
the resource allocation unit is further configured to, when the determination unit determines that the cell grouping of the current cell is the second grouping cell, allocate, in currently available PUCCH resources, a slot1 PUCCH resource to the UE, and if the slot0 PUCCH resource is already allocated, allocate a slot0 PUCCH resource to the UE.
7. The base station of claim 6, wherein the base station further comprises:
an identifying unit, configured to identify the cell in the target area as two grouped cells by using a cell identifier before the determining unit determines the cell group of the current cell: a first packet cell and a second packet cell.
8. The base station according to claim 6 or 7, wherein the cell identifier is a PUCCH resource priority usage identifier;
the PUCCH resource priority usage identifier of the first packet cell is 0, the PUCCH resource priority usage identifier of the second packet cell is 1,
or,
the PUCCH resource priority usage identifier of the first packet cell is 1, the PUCCH resource priority usage identifier of the second packet cell is 0,
or,
the PUCCH resource priority usage flag of the first packet cell is OFF, the PUCCH resource priority usage flag of the second packet cell is ON,
or,
the PUCCH resource priority use identifier of the first packet cell is ON, and the PUCCH resource priority use identifier of the second packet cell is OFF.
9. The base station according to claim 6 or 7, wherein the cell identifier is the PCI modulo 2 parameter of the current cell;
the parameter after the cell PCI of the first grouping cell is modulo 2 is 0, the parameter after the cell PCI of the second grouping cell is modulo 2 is 1,
or,
the parameter after the cell PCI of the first grouping cell modulo 2 is 1, and the parameter after the cell PCI of the second grouping cell modulo 2 is 0.
10. The base station of claim 8, wherein the PUCCH resource is a PUCCH Format2x resource or a PUCCH Format1x resource.
11. A communication system comprising a UE and a base station according to any of claims 6 to 10.
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