CN110049569B - Method and system for allocating SRS resources according to QoS - Google Patents
Method and system for allocating SRS resources according to QoS Download PDFInfo
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- CN110049569B CN110049569B CN201910360501.3A CN201910360501A CN110049569B CN 110049569 B CN110049569 B CN 110049569B CN 201910360501 A CN201910360501 A CN 201910360501A CN 110049569 B CN110049569 B CN 110049569B
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- H—ELECTRICITY
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- 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
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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 SRS resources according to QoS, wherein the method comprises the following steps: when a UE establishes a default bearer, a base station configures a first configuration parameter of an SRS resource according to a preset first allocation period; when a UE establishes a special bearer, a base station acquires uplink QoS (quality of service) required by service on each special bearer, and counts all the uplink QoS to obtain the QoS total requirement of the UE; the base station calculates a second allocation period of the SRS resource according to the QoS total demand; the base station configures a second configuration parameter of the SRS resource according to the second allocation period, and transmits the first configuration parameter or the second configuration parameter to the UE through an RRC message sent to the UE; and the UE calculates the position of the SRS resource according to the first configuration parameter or the second configuration parameter, and transmits the SRS through the SRS resource at the position. The invention can reasonably distribute the SRS resource according to the 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 SRS resources according to QoS.
Background
In the existing LTE communication system, a cell allocates SRS (sounding reference signal) resources to a UE (User Equipment) in a connected state, so as to measure uplink channel quality of the UE.
SRS resource allocation is carried out according to a period, the shorter the period is, the more accurate the UE measures an air interface channel, and the more SRS resources required by the UE are; conversely, the longer the period, the less SRS resources the UE needs, and the less real-time the uplink channel quality measured by the base station is.
The existing SRS resource allocation strategy is to set a series of thresholds according to the number of UEs online in a cell, and the SRS resource allocation period is associated with the thresholds. In short, the period of SRS resource allocation increases with the number of UEs online in a cell, and this achieves a balance between UE downlink measurement and cell specifications. However, this may cause that the UE whose service type requires more frequent downlink measurements cannot obtain enough SRS resources, and the UE whose service type requires less downlink measurements may obtain redundant SRS resources.
Disclosure of Invention
The invention mainly solves the technical problem of providing a method and a system for allocating SRS resources according to QoS, which can reasonably allocate the SRS resources according to QoS.
In order to solve the technical problems, the invention adopts a technical scheme that: a method for allocating SRS resources according to QoS is provided, which comprises the following steps: s1: when a base station establishes a default bearer at UE, the base station configures a first configuration parameter of an SRS resource according to a preset first allocation period, and transmits the first configuration parameter to the UE through an RRC message sent to the UE; s2: the base station acquires uplink QoS required by the service on each special bearer when the UE establishes the special bearers, and counts all the uplink QoS to obtain the QoS total requirement of the UE; s3: the base station calculates a second allocation period of SRS resources according to the QoS total demand, wherein the larger the QoS total demand is, the shorter the second allocation period is, and the smaller the QoS total demand is, the longer the second allocation period is; s4: the base station configures a second configuration parameter of the SRS resource according to the second allocation period, and transmits the second configuration parameter to the UE through an RRC message sent to the UE; s5: and the UE calculates the position of the SRS resource according to the first configuration parameter or the second configuration parameter, and sends the SRS through the SRS resource at the position.
Preferably, the base station monitors the change of the dedicated bearer of the UE in real time; and if the UE establishes a special bearer, deletes the existing special bearer or adjusts the uplink QoS of the existing special bearer, the base station newly counts all the uplink QoS to obtain the QoS total demand of the UE.
Preferably, the step of calculating, by the base station, the second allocation period of SRS resources according to the QoS total demand includes: and the base station calculates a second allocation period of the SRS resource 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 allocating the SRS resources according to the QoS comprises a base station and UE, wherein the base station comprises a QoS statistic module, an allocation period calculation module and a configuration parameter calculation module; the QoS statistical module is used for acquiring uplink QoS required by the service on each special bearer when the UE establishes the special bearers, and counting all the uplink QoS to obtain the QoS total requirement of the UE; the allocation period calculating module is configured to calculate a second allocation period of SRS resources according to the total QoS demand, where the greater the total QoS demand is, the shorter the second allocation period is, the smaller the total QoS demand is, and the longer the second allocation period is; the configuration parameter calculation module is configured to, when the UE establishes the default bearer, configure a first configuration parameter of the SRS resource according to a first preset allocation period, or configure a second configuration parameter of the SRS resource according to the second allocation period, and send the first configuration parameter or the second configuration parameter to the UE through an RRC message sent to the UE; and the UE is used for calculating the position of the SRS resource according to the first configuration parameter or the second configuration parameter and sending the SRS through the SRS resource at the position.
Preferably, the base station further includes a monitoring module: the monitoring module is used for monitoring the change of the special bearer of the UE in real time; the QoS statistical module is also used for re-counting all uplink QoS to obtain the QoS total demand of the UE when the UE newly builds a special bearer, deletes the existing special bearer or adjusts the uplink QoS of the existing special bearer.
Preferably, the allocation period calculating module is specifically configured to calculate a second allocation period of SRS resources according to the QoS overall demand according to a preset configuration table.
Preferably, the allocation period calculation module is further configured to update the configuration table according to a matching condition between specific data transmission of the base station and QoS requirements.
Different from the prior art, the invention has the beneficial effects that: by allocating SRS resources to UE aiming at the service of the UE, the service needs the UE with more frequent uplink measurement, more SRS resources can be obtained for measuring the uplink channel quality, the service needs the UE with less uplink measurement, and less SRS resources can be obtained, so that the SRS resources can be reasonably allocated according to QoS, and the SRS resources can be fully utilized.
Drawings
Fig. 1 is a flowchart illustrating a method for allocating SRS resources according to QoS according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a system for allocating SRS resources according to QoS according to 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 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.
Referring to fig. 1, a method for allocating SRS resources according to QoS according to an embodiment of the present invention includes:
s1: when a base station establishes a default bearer at User Equipment (UE), the base station configures a first configuration parameter of an SRS resource according to a preset first allocation period, and transmits the first configuration parameter to the UE through a Radio Resource Control (RRC) message sent to the UE.
The default bearer is a radio bearer established by the system itself when the UE and the base station complete the attachment and if there is no other data transmission. When the UE has a small amount of data to transmit, it can transmit directly on the default bearer. At this time, the UE needs to perform uplink measurement less, so the first allocation period may be a larger period.
S2: when the UE establishes the special bearer, the base station acquires uplink QoS required by the service on each special bearer, and counts all the uplink QoS to obtain the QoS total demand of the UE.
Wherein, for the base station, the UE with which the radio link is established is an online UE. The uplink QoS can reflect the uplink transmission rate required by the service type, and the larger the uplink QoS is, the larger the uplink transmission rate is, and the total QoS requirement is the sum of all the uplink QoS.
S3: and the base station calculates a second allocation period of the SRS resources according to the QoS total demand, wherein the larger the QoS total demand is, the shorter the second allocation period is, the smaller the QoS total demand is, and the longer the second allocation period is.
And the base station determines the uplink overall transmission rate according to the QoS overall requirement, and then calculates the second allocation period of the SRS resource according to the uplink overall transmission rate. The second allocation period is configured as a period of the UE, and allocation of PUCCH resources of the UE may be explicit.
S4: and the base station configures a second configuration parameter of the SRS resource according to the second allocation period and sends the second configuration parameter to the UE through an 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 SRS resources to the UE.
S5: and the UE calculates the position of the SRS resource according to the first configuration parameter or the second configuration parameter, and transmits the SRS through the SRS resource at the position.
The UE may calculate the position of the SRS resource according to the first configuration parameter or the second configuration parameter, and since the base station has determined the allocation period of the SRS resource at the position, the UE may perform feedback on the SRS resource through the position.
In this embodiment, the method further includes: the base station monitors the change of the special bearer of the UE in real time; if UE establishes new special load, deletes existing special load or adjusts the up QoS of existing special load, the base station counts all up QoS again to get the QoS general demand of UE.
In this embodiment, the step of calculating, by the base station, the second allocation period of the SRS resource according to the total QoS requirement specifically includes: and the base station calculates a second allocation period of the SRS resource according to the QoS total demand according to a preset configuration table. The configuration table records the corresponding relationship between the overall demands of different QoS and the second allocation period. Further, the method further comprises: 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, so that more accurate reference can be provided for subsequent SRS resource allocation.
Referring to fig. 2, the system for allocating SRS 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 the UE establishes the dedicated bearers, obtain uplink QoS required by the service on each dedicated bearer, and count all the uplink 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 uplink QoS index can reflect the uplink transmission rate required by the service, and the larger the uplink QoS is, the larger the uplink transmission rate is, and the total QoS requirement is the sum of all uplink QoS.
And an allocation period calculating module 12, configured to calculate a second allocation period of the SRS resources according to the total QoS requirement, where the larger the total QoS requirement is, the shorter the second allocation period is, the smaller the total QoS requirement is, and the longer the second allocation period is. The allocation period calculation module 12 determines an uplink total transmission rate according to the QoS total demand, and then calculates a second allocation period of the SRS resource according to the uplink total transmission rate.
The configuration parameter calculating module 13 is configured to, when the UE20 establishes the default bearer, configure a first configuration parameter of the SRS resource according to a first preset allocation period, or configure a second configuration parameter of the SRS resource according to a second allocation period, and send the first configuration parameter or the second configuration parameter to the UE20 through an RRC message sent to the UE20. The default bearer is a radio bearer established by the system itself when the UE and the base station complete the attachment and if there is no other data transmission. When the UE has a small amount of data to transmit, it can transmit directly on the default bearer. At this time, the UE needs to perform uplink measurement less, so the first allocation period may be a larger period. 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 the SRS resource for the UE20.
And the UE20 is configured to calculate a position of the SRS resource according to the first configuration parameter or the second configuration parameter, and transmit the SRS through the SRS resource at the position.
In this embodiment, the base station 10 further includes a monitoring module 14. The monitoring module 14 is configured to monitor a change of the dedicated bearer of the UE20 in real time; the QoS statistics module 11 is further configured to, when the UE20 creates a new dedicated bearer, deletes an existing dedicated bearer, or adjusts the uplink QoS of an existing dedicated bearer, re-count all uplink QoS to obtain the QoS overall requirement of the UE20.
In this embodiment, the allocation period calculating module 12 is specifically configured to calculate the second allocation period of the SRS resource according to the QoS overall demand according to a preset configuration table. 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 SRS resource allocation.
Through the manner, the method and the system for allocating the SRS resources according to the QoS allocate the SRS resources for the UE according to the service of the UE, the service needs the UE with more frequent uplink measurement, more SRS resources can be obtained for measuring the uplink channel quality, the service needs the UE with less uplink measurement, and less SRS resources can be obtained, so that the SRS resources can be reasonably allocated according to the QoS, and the SRS resources can be fully utilized.
The above description is only an embodiment of the present invention, and is not intended to limit the scope of the present invention, and all equivalent structures or equivalent processes performed by the present invention or directly or indirectly applied to other related technical fields are included in the scope of the present invention.
Claims (8)
1. A method for allocating SRS resources according to QoS, comprising:
s1: when a base station establishes a default bearer at User Equipment (UE), the base station configures a first configuration parameter of an SRS resource according to a first preset allocation period and issues the first configuration parameter to the UE through a Radio Resource Control (RRC) message sent to the UE;
s2: when the UE establishes the special bearers, the base station acquires uplink QoS (quality of service) required by the service on each special bearer, and counts all uplink QoS to obtain the total QoS requirement of the UE;
s3: the base station calculates a second allocation period of Sounding Reference Signal (SRS) resources according to the QoS total demand, wherein the larger the QoS total demand is, the shorter the second allocation period is, the smaller the QoS total demand is, and the longer the second allocation period is;
s4: the base station configures a second configuration parameter of the SRS resource according to the second allocation period, and transmits the second configuration parameter to the UE through an RRC message sent to the UE;
s5: and the UE calculates the position of the SRS resource according to the first configuration parameter or the second configuration parameter, and sends the SRS through the SRS resource at the position.
2. The method of allocating SRS resources according to QoS claim 1, further comprising: the base station monitors the change of the special bearer of the UE in real time;
and if the UE establishes a special bearer, deletes the existing special bearer or adjusts the uplink QoS of the existing special bearer, the base station newly counts all the uplink QoS to obtain the QoS total demand of the UE.
3. The method of claim 1, wherein the step of the base station calculating the second allocation period of SRS resources according to the total QoS requirement specifically comprises:
and the base station calculates a second allocation period of the SRS resource according to the QoS total demand according to a preset configuration table.
4. The method of allocating SRS resources according to QoS claim 3, further comprising: 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.
5. A system for allocating SRS resources according to QoS is characterized by comprising a base station and UE, wherein the base station comprises a QoS statistic module, an allocation period calculation module and a configuration parameter calculation module;
the QoS statistical module is used for acquiring uplink QoS required by the service on each special bearer when the UE establishes the special bearers, and counting all the uplink QoS to obtain the QoS total demand of the UE;
the allocation period calculation module is configured to calculate a second allocation period of SRS resources according to the QoS overall demand, where the larger the QoS overall demand is, the shorter the second allocation period is, and the smaller the QoS overall demand is, the longer the second allocation period is;
the configuration parameter calculation module is configured to, when the UE establishes the default bearer, configure a first configuration parameter of the SRS resource according to a first preset allocation period, or configure a second configuration parameter of the SRS resource according to the second allocation period, and send the first configuration parameter or the second configuration parameter to the UE through an RRC message sent to the UE;
and the UE is used for calculating the position of the SRS resource according to the second configuration parameter and sending the SRS through the SRS resource at the position.
6. The system for allocating SRS resources according to QoS claim 5, wherein the base station further includes a monitoring module:
the monitoring module is used for monitoring the change of the special bearer of the UE in real time;
the QoS statistics module is further configured to re-count all uplink QoS to obtain the QoS overall demand of the UE when the UE newly creates a dedicated bearer, deletes an existing dedicated bearer, or adjusts the uplink QoS of the existing dedicated bearer.
7. The system according to claim 5, wherein the allocation period calculating module is specifically configured to calculate the second allocation period of SRS resources according to the total QoS requirement according to a pre-established configuration table.
8. The system for allocating SRS resources according to QoS of claim 7, wherein the allocation period calculating module is further configured to update the configuration table according to a match between a particular data transmission of the base station and a QoS requirement.
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