CN110049570B - Method and system for allocating PUCCH resources according to QoS - Google Patents
Method and system for allocating PUCCH resources according to QoS Download PDFInfo
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- CN110049570B CN110049570B CN201910361367.9A CN201910361367A CN110049570B CN 110049570 B CN110049570 B CN 110049570B CN 201910361367 A CN201910361367 A CN 201910361367A CN 110049570 B CN110049570 B CN 110049570B
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
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- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
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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
- H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality
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Abstract
The invention discloses a method and a system for allocating PUCCH resources according to QoS, wherein the method comprises the following steps: when a base station establishes a wireless link with UE, acquiring downlink QoS required by services on each wireless bearer, and counting all downlink QoS to obtain the QoS total requirement of the UE; the base station calculates the distribution period of the needed PUCCH resources according to the QoS overall demand, wherein the larger the QoS overall demand is, the shorter the PUCCH distribution period is, the smaller the QoS overall demand is, and the longer the distribution period is; the base station configures the configuration parameters of the PUCCH resources according to the PUCCH resource cycles and sends the configuration parameters to the UE through an RRC message sent to the UE; and the UE calculates the position of the PUCCH resource according to the configuration parameters and feeds back the PUCCH resource through the position. The invention can reasonably distribute PUCCH resources according to QoS.
Description
Technical Field
The present invention relates to the field of wireless communication technologies, and in particular, to a method and a system for allocating PUCCH resources according to QoS.
Background
In an existing LTE communication system, a cell allocates a PUCCH (Physical Uplink Control CHannel) resource to a UE (User Equipment) in a connected state, and the PUCCH resource is used for feeding back CQI (CHannel Quality Indicator), PMI (Precoding Matrix Indicator), SR (Scheduling Request), and feedback of ACK/NACK information of downlink Scheduling measured by the UE. The PUCCH resource protocol of the LTE communication system has a clear specification, and the number of PUCCH resources cannot exceed 25% of the total uplink resource number, so the number of online UEs is completely limited by the number of PUCCH resources.
The PUCCH resource allocation is carried out according to the period, the shorter the period is, the more accurate the measurement of the UE on the air interface channel is, and the more PUCCH resources are required by the UE; conversely, the longer the period is, the less PUCCH resources are required by the UE, and the less real-time the measured downlink channel quality is.
The existing PUCCH resource allocation strategy is to set a series of thresholds according to the number of UEs online in a cell, and the allocation period of the PUCCH resource is associated with the thresholds. In short, the allocation period of the PUCCH resource increases as the number of on-line UEs in a cell increases, and thus a balance between UE downlink measurement and cell specifications is achieved. However, this may cause that a UE whose traffic type requires more frequent downlink measurements cannot obtain enough PUCCH resources, and a UE whose traffic type requires less downlink measurements may obtain redundant PUCCH resources.
Disclosure of Invention
The invention mainly solves the technical problem of providing a method and a system for allocating PUCCH resources according to QoS, which can reasonably allocate PUCCH resources according to QoS.
In order to solve the technical problems, the invention adopts a technical scheme that: a method for allocating PUCCH resources according to QoS is provided, which comprises the following steps: s1: when a base station establishes a wireless link with UE, acquiring downlink QoS required by services on each wireless bearer, and counting all downlink QoS to obtain the QoS total requirement of the UE; s2: the base station calculates the distribution period of PUCCH resources according to the QoS overall demand, wherein the larger the QoS overall demand is, the shorter the distribution period is, and the smaller the QoS overall demand is, the longer the distribution period is; s3: the base station configures configuration parameters of PUCCH resources according to the allocation period and sends the configuration parameters to the UE through RRC messages sent to the UE; s4: and the UE calculates the position of the PUCCH resource according to the configuration parameters and feeds back the PUCCH resource through the position.
Preferably, the method further comprises: the base station monitors the change of the radio bearer of the UE in real time; and if the UE establishes a new radio bearer, deletes the existing radio bearer or adjusts the downlink QoS of the existing radio bearer, the base station counts all the downlink QoS again to obtain the QoS total demand of the UE.
Preferably, the step of calculating, by the base station, the allocation period of the PUCCH resource according to the QoS overall demand specifically includes: and the base station calculates the distribution period of the PUCCH resources according to the QoS total demand according to a preset configuration table.
Preferably, the method further comprises: and the base station updates the configuration table according to the matching condition of the specific data transmission of the base station and the QoS requirement.
In order to solve the technical problem, the invention adopts another technical scheme that: the system for distributing PUCCH resources according to QoS is provided, and comprises a base station and UE, wherein the base station comprises a QoS statistic module, a distribution period calculation module and a configuration parameter calculation module; the QoS statistical module is used for acquiring downlink QoS required by the service on each wireless bearer when a wireless link is established with the UE, and counting all the downlink QoS to obtain the QoS total requirement of the UE; the allocation period calculation module is configured to calculate an allocation period of a PUCCH resource according to the QoS overall demand, where the larger the QoS overall demand is, the shorter the allocation period is, and the smaller the QoS overall demand is, the longer the allocation period is; the configuration parameter calculation module is used for configuring the configuration parameters of the PUCCH resources according to the allocation period and sending the configuration parameters to the UE through an RRC message sent to the UE; and the UE is used for calculating the position of the PUCCH resource according to the configuration parameters and feeding back the PUCCH resource through the position.
Preferably, the base station further includes a monitoring module: the monitoring module is used for monitoring the change of the radio bearer of the UE in real time; the QoS statistical module is further configured to, when the monitoring module monitors that the UE newly creates a radio bearer, deletes an existing radio bearer, or adjusts downlink QoS of an existing radio bearer, re-count all downlink QoS to obtain a QoS total requirement of the UE.
Preferably, the allocation cycle calculating module is specifically configured to calculate, according to a preset configuration table, an allocation cycle of PUCCH resources according to the QoS overall demand.
Preferably, the allocation period calculating module is further configured to update the configuration table according to a matching condition between specific data transmission of the base station and the QoS requirement.
Different from the prior art, the invention has the beneficial effects that: the PUCCH resources are allocated to the UE aiming at the service of the UE, the UE with more frequent downlink measurement is required for the service, more PUCCH resources are obtained to feed back CSI (Channel State Information, CSI and Channel State Information) of a downlink Channel, the UE with less downlink measurement is required for the service, and less PUCCH resources are obtained, so that the PUCCH resources can be reasonably allocated according to QoS, and the PUCCH resources can be fully utilized.
Drawings
Fig. 1 is a flowchart illustrating a method for allocating PUCCH resources according to QoS according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a system for allocating PUCCH resources according to QoS in an embodiment of the present invention.
Detailed Description
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 obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Referring to fig. 1, a method for allocating PUCCH resources according to QoS according to an embodiment of the present invention includes:
s1: when the base station establishes a wireless link with the UE, the base station acquires downlink QoS required by the service on each wireless bearer, and counts all the downlink QoS to obtain the QoS total requirement of the UE.
Wherein, for the base station, the UE with which the radio link is established is an online UE. The downlink QoS can reflect the downlink transmission rate required by the service type, and the larger the downlink QoS is, the larger the downlink transmission rate is, and the total QoS requirement is the sum of all downlink QoS. In this embodiment, the downlink QoS should at least include GBR (Guaranteed Bit Rate) traffic.
S2: and the base station calculates the allocation period of the PUCCH resources according to the QoS overall demand, wherein the larger the QoS overall demand is, the shorter the allocation period is, and the smaller the QoS overall demand is, the longer the allocation period is.
And the base station determines the downlink overall transmission rate according to the QoS overall requirement, and then calculates the distribution period of the PUCCH resources according to the downlink overall transmission rate. The allocation period is configured as a period of the UE, and allocation of PUCCH resources of the UE can be clarified.
S3: and the base station configures the configuration parameters of the PUCCH resources according to the allocation period and sends the configuration parameters to the UE through a Radio Resource Control (RRC) message sent to the UE.
The RRC message is used to instruct the UE to perform a Radio Resource Control (RRC) connection reconfiguration process, and the base station may send a corresponding configuration parameter in the RRC message to allocate a PUCCH Resource to the UE.
S4: and the UE calculates the position of the PUCCH resource according to the configuration parameters and feeds back on the PUCCH resource according to the position.
The UE may deduce a position of the PUCCH resource according to the configuration parameter, and since the base station has determined an allocation period of the PUCCH resource at the position, the UE may perform feedback on the PUCCH resource through the position, where the feedback includes, but is not limited to, CQI, PMI, SR, and ACK/NACK information.
In this embodiment, the method further includes: the base station monitors the change of the radio bearer of the UE in real time; and if the UE establishes a new radio bearer, deletes the existing radio bearer or adjusts the downlink QoS of the existing radio bearer, the base station re-counts all the downlink QoS to obtain the QoS total demand of the UE.
In this embodiment, the step of calculating, by the base station, the allocation period of the PUCCH resource according to the total QoS requirement specifically includes: and the base station calculates the allocation period of the PUCCH resources according to the QoS total demand according to a preset configuration table. Further, the base station can update the configuration table according to the matching condition of the specific data transmission of the base station and the QoS requirement, so that more accurate reference can be provided for the subsequent PUCCH resource allocation.
Referring to fig. 2, the system for allocating PUCCH resources according to QoS according to the embodiment of the present invention includes a base station 10 and a UE20, where the base station 10 includes a QoS statistics module 11, an allocation period calculation module 12, and a configuration parameter calculation module 13;
the QoS statistics module 11 is configured to, when a wireless link is established with the UE, obtain downlink QoS required by a service on each radio bearer, and count all downlink QoS to obtain a total QoS requirement of the UE. Among them, the UE20 with which the base station 10 establishes a radio link is an online UE. The downlink QoS index can reflect the downlink transmission rate required by the service type, and the larger the downlink QoS is, the larger the downlink transmission rate is, and the total QoS requirement is the sum of all downlink QoS.
And an allocation period calculating module 12, configured to calculate an allocation period of the PUCCH resource according to the QoS overall demand, where the larger the QoS overall demand is, the shorter the allocation period is, and the smaller the QoS overall demand is, the longer the allocation period is. The allocation period calculation module 12 determines a downlink overall transmission rate according to the QoS overall demand, and then calculates an allocation period of the PUCCH resource according to the downlink overall transmission rate.
And the configuration parameter calculation module 13 is configured to configure the configuration parameters of the PUCCH resources according to the allocation period, and send the configuration parameters to the UE20 through an RRC message sent to the UE20. The RRC message is used to instruct the UE to perform an RRC connection reconfiguration process, and the configuration parameter calculation module 13 may send a corresponding configuration parameter in the RRC message to allocate a PUCCH resource to the UE20.
The UE20 is configured to calculate a position of the PUCCH resource according to the configuration parameter, and perform feedback on the PUCCH resource according to the position. The UE20 may deduce a position of the PUCCH resource according to the configuration parameter, and since the base station 10 has determined an allocation cycle of the PUCCH resource at the position, the UE20 may perform feedback on the PUCCH resource through the position, where the feedback includes, but is not limited to, CQI, PMI, SR, and ACK/NACK information.
In this embodiment, the base station 10 further includes a monitoring module 14. The monitoring module 14 is configured to monitor a change of a radio bearer of the UE20 in real time; the QoS statistics module 11 is further configured to, when the monitoring module 14 monitors that the UE20 newly creates a radio bearer, deletes an existing radio bearer, or adjusts downlink QoS of an existing radio bearer, re-count all downlink QoS to obtain a total QoS requirement of the UE.
In this embodiment, the allocation cycle calculating module 12 is specifically configured to calculate, according to a pre-established configuration table, an allocation cycle of PUCCH resources according to the QoS overall demand. Further, the allocation period calculating module 12 is further configured to update the configuration table according to a matching condition of the specific data transmission of the base station and the QoS requirement, so as to provide a more accurate reference for subsequent PUCCH resource allocation.
Through the manner, the method and the system for allocating the PUCCH resources according to the QoS in the embodiment of the invention allocate the PUCCH resources for the UE aiming at the service of the UE, more PUCCH resources can be obtained when the service needs the UE with more frequent downlink measurement for feeding back CSI of a downlink channel, less PUCCH resources can be obtained when the service needs the UE with less downlink measurement, so that the PUCCH resources can be reasonably allocated according to the QoS, and the PUCCH resources can be fully utilized.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (2)
1. A method for allocating PUCCH resources according to QoS, comprising:
s1: when a base station establishes a wireless link with User Equipment (UE), acquiring downlink QoS (quality of service) required by services on each wireless bearer, and counting all downlink QoS to obtain the total QoS requirement of the UE;
s2: the base station calculates the allocation period of the PUCCH resources according to the QoS overall demand, wherein the larger the QoS overall demand is, the shorter the allocation period is, and the smaller the QoS overall demand is, the longer the allocation period is;
s3: the base station configures configuration parameters of PUCCH resources according to the allocation period and sends the configuration parameters to the UE through a Radio Resource Control (RRC) message sent to the UE;
s4: the UE calculates the position of the PUCCH resource according to the configuration parameter and feeds back on the PUCCH resource through the position;
the method further comprises the following steps:
the base station monitors the change of the radio bearer of the UE in real time;
if the UE establishes a radio bearer, deletes the existing radio bearer or adjusts the downlink QoS of the existing radio bearer, the base station re-counts all the downlink QoS to obtain the QoS total demand of the UE;
the step of calculating the distribution cycle of the PUCCH resources by the base station according to the QoS total demand specifically comprises the following steps:
the base station calculates the distribution period of PUCCH resources according to the QoS total demand according to a preset configuration table;
the method further comprises the following steps:
and the base station updates the configuration table according to the matching condition of the specific data transmission of the base station and the QoS requirement.
2. A system for allocating PUCCH resources according to QoS is characterized by comprising a base station and UE, wherein the base station comprises a QoS statistical module, an allocation period calculation module and a configuration parameter calculation module;
the QoS statistical module is used for acquiring downlink QoS required by the service on each wireless bearer when a wireless link is established with the UE, and counting all the downlink QoS to obtain the QoS total requirement of the UE;
the allocation period calculation module is configured to calculate an allocation period of a PUCCH resource according to the QoS overall demand, where the larger the QoS overall demand is, the shorter the allocation period is, and the smaller the QoS overall demand is, the longer the allocation period is;
the configuration parameter calculation module is used for configuring the configuration parameters of the PUCCH resources according to the allocation period and sending the configuration parameters to the UE through an RRC message sent to the UE;
the UE is used for calculating the position of the PUCCH resource according to the configuration parameters and feeding back the PUCCH resource through the position;
the base station further comprises a monitoring module:
the monitoring module is used for monitoring the change of the radio bearer of the UE in real time;
the QoS statistical module is further configured to, when the monitoring module monitors that the UE newly establishes a radio bearer, deletes an existing radio bearer, or adjusts downlink QoS of an existing radio bearer, re-count all downlink QoS to obtain a QoS total requirement of the UE;
the allocation cycle calculation module is specifically configured to calculate an allocation cycle of PUCCH resources according to the QoS overall demand according to a preset configuration table;
the allocation period calculation module is further configured to update the configuration table according to a matching condition of the specific data transmission of the base station and the QoS requirement.
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| CN106102169A (en) * | 2016-05-26 | 2016-11-09 | 京信通信系统（广州）有限公司 | PUCCH resource collocation method and base station in a kind of LTE system |
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Patent Citations (4)
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| CN101841862A (en) * | 2009-03-18 | 2010-09-22 | 大唐移动通信设备有限公司 | Resource allocation method and device |
| CN102438319A (en) * | 2012-01-13 | 2012-05-02 | 电信科学技术研究院 | Uplink control channel resource distribution method and device |
| CN103687025A (en) * | 2013-12-18 | 2014-03-26 | 武汉邮电科学研究院 | Resource allocation method used for LTE system |
| CN106102169A (en) * | 2016-05-26 | 2016-11-09 | 京信通信系统（广州）有限公司 | PUCCH resource collocation method and base station in a kind of LTE system |
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