CN106304348B

CN106304348B - Resource sharing method between group user equipment and base station

Info

Publication number: CN106304348B
Application number: CN201510259516.2A
Authority: CN
Inventors: 魏立梅; 陈迎; 杨小倩; 范晨; 袁乃华
Original assignee: Chengdu Dingqiao Communication Technology Co Ltd
Current assignee: Chengdu Dingqiao Communication Technology Co Ltd
Priority date: 2015-05-20
Filing date: 2015-05-20
Publication date: 2020-01-07
Anticipated expiration: 2035-05-20
Also published as: CN106304348A

Abstract

The invention provides a resource sharing method and a base station among group user equipment, wherein the method comprises the following steps: after receiving the CQI reported by the first group user equipment, the base station determines whether the MCS corresponding to the CQI of the first group user equipment is higher than the MCS used by the current group service. If the number is higher than the preset value, the eNB refuses to allocate the SRS resource and the CQI resource for the eNB; otherwise, the base station judges whether to allocate SRS resources and CQI resources for the first group of user equipment according to the resource condition of the resource pool of the first group. In the process, the group user equipment in the same group shares the SRS resource pool and the CQI resource pool, so that the purpose of guaranteeing the cluster service by using limited resources is achieved.

Description

Resource sharing method between group user equipment and base station

Technical Field

The present invention relates to the field of communications, and in particular, to a method and a base station for resource sharing among group user equipments.

Background

In a Single Cell-Point to Multipoint (SC-PTM) system, a group service is transmitted to each Cell in which the service exists through a Physical Downlink Shared Channel (PDSCH) in a Point-to-Multipoint transmission manner.

In the foregoing group service transmission method, a base station (eNodeB, eNB) cannot obtain Channel Quality Indicator (CQI) information of each ue in a group, so that a Modulation and Coding format (MCS) adopted by the eNB when sending a PDSCH cannot be matched with radio Channel Quality conditions of all the ues in the group, which causes service embodiments of some ues in the group to fail to meet expected expectations. The following method is adopted to solve the problem: some group ues are allowed to enter a Radio resource control CONNECTED (RRC _ CONNECTED) state, and an eNB configures Sounding Reference Signal (SRS) resources and CQI resources for the group ues, so that the group ues keep synchronized and can report CQI information to the eNB. And the eNB sends the transmission blocks carried by the PDSCH by adopting the MCS which is suitable for the worst group user equipment or most group user equipment according to the CQI information of the group user equipment, thereby improving the service experience of the group user equipment.

However, since the SRS resource and CQI resource of the eNB are limited, in order to support more groups and guarantee the quality of service of other non-group user equipments, it is necessary to control the number of group user equipments entering the RRC _ CONNECTED state in each group as much as possible. At this time, the SRS resource and CQI resource allocated to the group need to be shared among the user equipments of the group. Therefore, when the eNB has limited resources, how to share the SRS resources and the CQI resources among the group user equipments is an urgent problem to be solved in the industry.

Disclosure of Invention

The embodiment of the invention provides a resource sharing method among group user equipment and a base station, which achieve the purpose that the group user equipment in the same group in the cluster communication shares SRS and CQI resources.

In a first aspect, an embodiment of the present invention provides a method for sharing resources among group user devices, including:

a base station receives a Channel Quality Indicator (CQI) sent by a first group of user equipment, wherein the first group of user equipment belongs to a first group;

the base station judges whether the modulation and coding format MCS corresponding to the CQI is higher than the MCS adopted by the current group service;

if so, the base station refuses to allocate resources for the first group of user equipment; if not, the base station judges whether to allocate the resource to the first group of user equipment according to the resource condition of a resource pool, wherein the resource in the resource pool is that the base station allocates the resource in idle resources to the first group according to a first scale factor, and the resource comprises Sounding Reference Signal (SRS) resource and Channel Quality Indicator (CQI) resource.

In a first possible implementation manner of the first aspect, before the base station receives the channel quality indicator CQI sent by the first group of user equipments, the method further includes:

if the idle resources are larger than a first threshold value, the base station allocates the resource pool for the first group;

the base station determining whether to allocate the resource to the first group of user equipment according to the resource status of the resource pool, including:

if the base station judges that the resources of the resource pool are sufficient, the base station allocates the resources to the first group of user equipment; otherwise, the base station determines whether to allocate the resource to the first group user equipment according to the CQI of the first group user equipment and the CQI of a second group user equipment, where the second group user equipment is the group user equipment that has already allocated the SRS resource and the CQI resource in the first group, and the second group user equipment is at least one.

With reference to the first possible implementation manner of the first aspect, in a second possible implementation manner of the first aspect, the determining, by the base station, whether to allocate the resource to the first group of user equipment according to the CQI of the first group of user equipment and the CQI of the second group of user equipment includes:

if the base station judges that the CQI of the first group of user equipment is lower than the CQI of at least one second group of user equipment, the base station triggers the at least one second group of user equipment to release SRS resources and CQI resources to the resource pool until the resources in the resource pool are enough for the first group of user equipment to use; the base station allocates the resources for the first group of user equipment from the resources of the resource pool; otherwise, if the base station judges that the CQI of the first group of user equipment is higher than the CQI of all the second group of user equipment, the base station refuses to allocate resources for the first group of user equipment.

With reference to the second possible implementation manner of the first aspect, in a third possible implementation manner of the first aspect, before the triggering, by the base station, at least one of the second group of user equipments to release SRS resources and CQI resources to the resource pool, the method further includes:

the base station judges whether the downlink load of the second group user equipment has concurrent service;

and if the base station judges that the downlink bearer of the second group of user equipment has the concurrent service, forbidding the second group of user equipment to release the resource.

With reference to the second possible implementation manner of the first aspect, in a fourth possible implementation manner of the first aspect, each of the second group devices that release the SRS resources and the CQI resources is in an online state, and becomes a third group of user devices, where in the online state, each of the third group of user devices enters an RRC connected state, but is not allocated with the SRS resources and the CQI resources.

With reference to the fourth possible implementation manner of the first aspect, in a fifth possible implementation manner of the first aspect, the method further includes:

and the base station periodically triggers each third group of user equipment to poll, and allocates the resource for at least one polled third group of user equipment.

In a sixth possible implementation manner of the first aspect, the rejecting, by the base station, allocation of resources for the first group of user equipments includes:

the base station refuses the first group user equipment to enter an RRC connected state so as to refuse to allocate resources for the first group user equipment; alternatively, the first and second electrodes may be,

and allowing the first group of user equipment to be in an online state and become third group of user equipment by the base station, wherein in the online state, each third group of user equipment enters an RRC (radio resource control) connection state, but does not allocate SRS (sounding reference signal) resources and CQI (channel quality indicator) resources.

With reference to any one of the first to sixth possible implementation manners of the first aspect, in a seventh possible implementation manner of the first aspect, before the allocating, by the base station, the resource pool for the first group if the idle resource is greater than the first threshold, the method further includes:

and the base station periodically counts the idle resources.

With reference to the seventh possible implementation manner of the first aspect, in an eighth possible implementation manner of the first aspect, the method further includes:

the base station judges whether the variation of the proportion of the idle resources to the total resources is larger than a third threshold value in the idle resource counting process of two adjacent periods;

if so, re-allocating the resource pool for the first group according to the first scale factor; when the resource in the reallocated resource pool is expanded, triggering the polling of the third group user equipment, and allocating the resource for at least one polled third group user equipment; otherwise, when the resources in the reallocated resource pool shrink and are not enough for all the second group user equipment to use, triggering at least one second group user equipment to release SRS resources and CQI resources to the resource pool until the resources in the resource pool are enough for the remaining second group user equipment to use;

otherwise, if the variation of the ratio of the idle resources to the total resources is smaller than a third threshold, the resource pool is kept unchanged.

With reference to the first aspect and any one of the first to sixth possible implementation manners of the first aspect, in a ninth possible implementation manner of the first aspect, before the receiving, by the base station, a channel quality indicator CQI sent by a first group of user equipments, the method further includes:

the base station periodically triggers the first group of user equipment to send the CQI to the base station.

In a second aspect, an embodiment of the present invention provides a base station, including:

a receiving module, configured to receive a channel quality indicator CQI sent by a first group of user equipment, where the first group of user equipment belongs to a first group;

a judging module, configured to judge whether a modulation and coding format MCS corresponding to the CQI received by the receiving module is higher than an MCS used by a current group service;

a processing module, configured to, if the determining module determines that the modulation and coding format MCS corresponding to the CQI is higher than the MCS used by the current group service, refuse to allocate resources to the first group user equipment, otherwise, determine whether to allocate the resources to the first group user equipment according to a resource condition of a resource pool, where the resources in the resource pool are resources in idle resources allocated to the first group by the base station according to a first scale factor, and the resources include sounding reference signal SRS resources and CQI resources.

In a first possible implementation manner of the second aspect, the base station further includes:

an allocating module, configured to allocate the resource pool for a first group if idle resources are greater than a first threshold before the receiving module receives a channel quality indicator CQI sent by a first group of user equipment;

the processing module is specifically configured to allocate the resource to the first group of user equipment when the determining module determines that the resource in the resource pool is sufficient; otherwise, determining whether to allocate the resource to the first group user equipment according to the CQI of the first group user equipment and the CQI of a second group user equipment, where the second group user equipment is a group user equipment that has already allocated SRS resource and CQI resource in the first group, and the second group user equipment is at least one.

With reference to the first possible implementation manner of the second aspect, in a second possible implementation manner of the second aspect, the processing module is specifically configured to, if the determining module determines that the CQI of the first group of user equipment is lower than the CQI of at least one second group of user equipment, trigger the at least one second group of user equipment to release SRS resources and CQI resources to the resource pool until resources in the resource pool are enough for the first group of user equipment to use; allocating the resources for the first group of user devices from resources of the resource pool; otherwise, if the processing module determines that the CQI of the first group of user equipment is higher than the CQIs of all the second group of user equipment, the processing module refuses to allocate resources to the first group of user equipment.

With reference to the second possible implementation manner of the second aspect, in a third possible implementation manner of the second aspect, the determining module is further configured to determine whether there is a concurrent service on a downlink bearer of the second group of user equipments before the processing module triggers at least one second group of user equipments to release SRS resources and CQI resources to the resource pool;

the processing module is specifically configured to prohibit the second group user equipment from releasing the resource if the determining module determines that the downlink bearer of the second group user equipment has the concurrent service.

With reference to the second possible implementation manner of the second aspect, in a fourth possible implementation manner of the second aspect, each of the second group devices that release SRS resources and CQI resources is in an online state, and becomes a third group of user devices, where in the online state, each of the third group of user devices enters an RRC connected state, but is not allocated with SRS resources and CQI resources.

With reference to the fourth possible implementation manner of the second aspect, in a fifth possible implementation manner of the second aspect, the processing module is further configured to periodically trigger polling of each third group of user equipments, and allocate the resource to at least one polled third group of user equipments.

In a sixth possible implementation manner of the second aspect, the processing module is specifically configured to refuse the first group of user equipments to enter an RRC connected state to refuse to allocate resources for the first group of user equipments; or, allowing the first group of user equipments to be in an online state and become a third group of user equipments, wherein in the online state, each third group of user equipments enters an RRC connected state, but is not allocated with SRS resources and CQI resources.

With reference to any one of the first to sixth possible implementation manners of the second aspect, in a seventh possible implementation manner of the second aspect, the processing module is further configured to periodically count the idle resources before the allocating module allocates the resource pool to the first group.

With reference to the seventh possible implementation manner of the second aspect, in an eighth possible implementation manner of the second aspect, the determining module is further configured to determine, in a statistical process of idle resources in two adjacent cycles, whether a variation of a ratio of the idle resources to total resources is greater than a third threshold;

the processing module is further configured to reallocate the resource pool for the first group according to the first scale factor if the determining module determines that the variation of the ratio of the idle resource to the total resource is greater than a third threshold; when the resource in the reallocated resource pool is expanded, triggering the polling of the third group user equipment, and allocating the resource for at least one polled third group user equipment; otherwise, when the resources in the reallocated resource pool shrink and are not enough for all the second group user equipment to use, triggering at least one second group user equipment to release SRS resources and CQI resources to the resource pool until the resources in the resource pool are enough for the remaining second group user equipment to use;

the processing module is further configured to keep the resource pool unchanged if the determining module determines that the variation of the ratio of the idle resources to the total resources is smaller than a third threshold.

With reference to the second aspect and any one of the first to sixth possible implementation manners of the second aspect, in a ninth possible implementation manner of the second aspect, the processing module is further configured to periodically trigger the first group of user equipments to send the CQI to the base station before the receiving module receives a channel quality indicator CQI sent by the first group of user equipments.

In the method for sharing resources among group user equipments and the base station provided in the embodiments of the present invention, after receiving the CQI reported by the first group user equipment, the base station determines whether the MCS corresponding to the CQI of the first group user equipment is higher than the MCS used in the current group service. If the number is higher than the preset value, the eNB refuses to allocate the SRS resource and the CQI resource for the eNB; otherwise, the base station judges whether to allocate SRS resources and CQI resources for the first group of user equipment according to the resource condition of the resource pool of the first group. In the process, the group user equipment in the same group shares the SRS resource pool and the CQI resource pool, so that the purpose of guaranteeing the cluster service by using limited resources is achieved.

Drawings

FIG. 1 is a flowchart illustrating a first embodiment of a method for sharing resources among group UEs according to the present invention;

fig. 2 is a schematic structural diagram of a base station according to a first embodiment of the present invention;

fig. 3 is a schematic structural diagram of a second embodiment of the base station.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. 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.

In a Long Term Evolution (LTE) public Network system, a Multimedia Broadcast Multicast Service (MBMS) is transmitted in a Multimedia Broadcast Multicast single Frequency Network (MBSFN) manner. Specifically, in all cells in an MBSFN area, MBMS services carried on a logical Channel (MTCH) are transmitted in the same MBSFN subframe through a Physical Multicast Channel (PMCH). In the MBMS service transmission process, the PMCH uses an extended Cyclic Prefix (CP), occupies the entire system bandwidth, and transmits through the antenna port 4, using a dedicated pilot. However, with the rapid development of trunking communication, it has become a great trend to support trunking communication in the LTE public network system, but the group service provided by trunking communication is different from MBMS service, and if a group service only existing in several cells in the MBSFN area is transmitted in the whole MBSFN area, resources are wasted.

Therefore, many communication manufacturers propose to transmit the group service in a point-to-multipoint manner through the PDSCH in the cell where the group service exists. This transmission scheme cannot obtain diversity gain of multiple cells, but has the following advantages:

firstly, only the cell where the group user equipment is located can be selected to transmit in a wide MBSFN area, so that air interface resources of cells without the group user equipment are saved;

secondly, the PDSCH adopts a transmission diversity transmission mode, and can obtain the transmission diversity gain which can not be obtained by a single antenna port of the MBMS service;

thirdly, a normal CP can be configured, and only a Cell Reference Signal (CRS) is adopted without adopting a special pilot, so that the consumption of empty port resources by the CP and the pilot is effectively reduced;

fourthly, the group service is not required to be sent in the whole bandwidth, and a cell interference coordination method suitable for the PDSCH is adopted;

fifthly, the group service is not required to be sent in the appointed MBSFN subframe, so that the group service and other LTE public network services can share resources in the non-MBSFN subframe.

In the process of sending the group service in a point-to-multipoint manner, the eNB cannot obtain the CQI of each group user equipment, so that the quality requirement of the radio channel of each group user equipment cannot be matched when the PDSCH is sent in an MCS. In order to solve the problem, the eNB needs a part of the group user equipments to enter an RRC _ CONNECTED state, and allocates SRS resources and CQI resources to the part of the group user equipments, so that the part of the group user equipments keep synchronization and can report CQI information to the eNB. And the eNB sends the transmission blocks carried by the PDSCH by adopting the MCS which is suitable for the worst group user equipment or the majority of group user equipment according to the CQI information of the group user equipment, thereby improving the service experience of the group user equipment.

However, since the SRS resource and CQI resource of the eNB are limited, in order to support more groups and guarantee the quality of service of other non-group user equipments, it is necessary to control the number of group user equipments entering the RRC _ CONNECTED state in each group as much as possible. At this time, the SRS resource and the CQI resource need to be shared among the user equipments in each group. Therefore, when the eNB has limited resources, how to share the SRS resources and the CQI resources among the group user equipments is an urgent problem to be solved in the industry.

In view of this, an embodiment of the present invention provides a method for sharing resources among group user equipments, so as to implement sharing SRS resources and CQI resources among the group user equipments in cluster communication. In particular, reference may be made to the embodiment of fig. 1.

Fig. 1 is a flowchart of a first embodiment of a method for sharing resources among group ues according to the present invention. The present embodiment describes the present invention in detail from the perspective of a base station, and is applicable to a scenario in which resources need to be shared among group user equipments in trunking communication. Specifically, the present embodiment includes the following steps:

101. the base station receives a channel quality indicator CQI sent by a first group of user equipment, wherein the first group of user equipment belongs to a first group.

In order to improve the service experience of the group user equipment, the eNB may make some group user equipment enter an RRC connected state by a certain method, and allocate SRS resources and CQI resources to the group user equipment, so that the group user equipment keeps synchronization and can report CQI information to the eNB. And the eNB controls the MCS of the group service on the PDSCH according to the CQI information of the group user equipment. However, since the eNB itself needs to support other normal services, i.e. non-group services, only when the resources are idle, part of the group user equipments are usually allowed to enter the RRC connected state to improve the service experience of the group user equipments. Furthermore, the eNB will only allocate a part of the free resources to the group user equipment, and the rest of the free resources will be used for accessing other services. When the cell resources are in shortage, the resources occupied by the group service should be properly or completely returned to the normal service.

In this step, the first group is a group for which the eNB divides idle resources, the first group ue is a group ue in the first group that is ready to establish an RRC connection to enter an RRC connection state, and the resource pool is formed by idle resources divided by the eNB for the first group. Specifically, when the idle resources of the eNB exceed a certain threshold, the eNB divides a part of the idle resources into a first group as a resource pool of the first group. All the group ues in the first group entering the RRC connected state will share the resource pool. When a first group of user equipment in a first group is ready to access, a CQI is sent to an eNB, for example, the CQI is carried in a random access message 3(MSG3) and sent to the eNB, the eNB determines whether to allow the first group of user equipment to enter an RRC connected state and allocate SRS resources and CQI resources according to the CQI of the first group of user equipment and a use condition of a resource pool, and a specific judgment and allocation process is detailed in steps 102 to 104.

102. And the base station judges whether the modulation and coding format MCS corresponding to the CQI is higher than the MCS adopted by the current group service.

103. If so, the base station refuses to allocate resources for the first group of user equipment;

104. if not, the base station judges whether to allocate the resource to the first group of user equipment according to the resource condition of a resource pool, the resource in the resource pool is allocated to the first group by the base station according to a first scale factor, and the resource comprises an SRS resource and a CQI resource.

In steps 102-104, after receiving the CQI reported by the first group user equipment, the eNB determines whether the modulation and coding format MCS corresponding to the CQI of the first group user equipment is higher than the MCS used by the current group service. If the modulation and coding format MCS corresponding to the CQI of the first group user equipment is higher than the CQI corresponding to the MCS adopted by the group service, the eNB refuses to allocate the SRS resource and the CQI resource to the modulation and coding format MCS; otherwise, if the MCS corresponding to the CQI of the first group of user equipments is not higher than the MCS used by the group, determining whether to allocate SRS resources and CQI resources to the first group of user equipments according to the resource status of the resource pool of the first group.

In the method for sharing resources among group user equipments provided in the embodiment of the present invention, after receiving a CQI reported by a first group user equipment, a base station determines whether an MCS corresponding to the CQI of the first group user equipment is higher than an MCS used in a current group service. If the number is higher than the preset value, the eNB refuses to allocate the SRS resource and the CQI resource for the eNB; otherwise, the base station judges whether to allocate SRS resources and CQI resources for the first group of user equipment according to the resource condition of the resource pool of the first group. In the process, the group user equipment in the same group shares the SRS resource pool and the CQI resource pool, so that the purpose of guaranteeing the cluster service by using limited resources is achieved.

In the embodiment of the present invention, the base station may periodically trigger a new group of user equipment, that is, the first group of user equipment to establish the RRC connection, at this time, the triggered first group of user equipment sends the CQI to the base station, and the eNB determines whether to allow the first group of user equipment to establish the RRC connection and allocate the SRS resource and the CQI resource according to the CQI of the first group of user equipment and the usage of the resource pool. For a first group of user equipment with a CQI that is not higher than the MCS used for the group service, when the resource of the resource pool is limited, that is, the resource is insufficient, the first group of user equipment with a poor CQI may preempt SRS resources and CQI resources of a second group of user equipment, where the second group of user equipment is the group of user equipment in the first group to which the SRS resources and the CQI resources have been allocated. When the CQI quality of the second group of user equipments is good, the SRS resource and the CQI resource thereof may be released, so that the second group of user equipments is in an online state, and the group of user equipments in the online state may be regarded as a third group of user equipments in the embodiment of the present invention, where the online state refers to: in the RRC connected state, but the SRS resource and the CQI resource are not allocated. For each third group of user equipment, the base station may periodically trigger the third group of user equipment to poll, and allocate SRS resources and CQI resources to the polled group of user equipment. In addition, when the online users are limited, that is, the number of the third group user devices is too large, part or all of the third group user devices can enter an IDLE (IDLE) state according to a certain rule; and thirdly, the eNB periodically counts the idle resources, namely periodically monitors the change condition of the idle resources, and when the idle resources of the eNB are less than a certain threshold value, the second group user equipment in the first group releases part or all of the resources of the resource pool, and is in an online state after releasing the resources. This will be explained below with reference to examples. Specifically, the second embodiment comprises the following steps:

201. the eNB presets a period T1, and periodically triggers idle resource statistics, wherein the idle resources comprise SRS resources and CQI resources. The idle condition of a certain resource is expressed in the proportion of idle resources in the certain resource to the total resources of the certain resource.

202. If the ratio of the idle SRS resource and the idle CQI resource is greater than a preset first threshold TH1(SRS) and a first threshold TH1(CQI), respectively, the eNB allocates the idle resource to a designated group according to a first scale factor alfa (SRS) and a first scale factor alfa (CQI), such as the first group in the first embodiment of the present invention. For example, when TH1(SRS) is 50% and TH2(CQI) is 40%, and when the free SRS resources account for 60% of the total SRS resources and the free CQI resources account for 60% of the total CQI resources, alfa (SRS) is 60% and alfa (CQI) is 60%, which corresponds to allocating 60% × 60% of the total SRS resources to the resource pool of the first group and 60% × 60% of the total CQI resources to the resource pool of the first group, and 36%.

203. When the resource pool of the first group is established, the eNB triggers part or all of the first group user equipments in the first group to enter RRC connection in an event, and presets a period T2, and then the eNB will periodically trigger the first group user equipments to establish RRC connection.

204. When the eNB receives a random access message 1(MSG1) initiated by a first user equipment in the first group, the eNB sends a random access message 2(MSG2) to the first group user equipment. In this process, the eNB sets the csirquest bit in the MSG2 to 1, so that the first group user equipment reports the CQI. Specifically, if the eNB allows a plurality of first group user equipments in the first group to establish RRC connection, a dedicated Preamble (Preamble) is allocated to the first group, whether a user equipment accessed on a Physical Random Access Channel (PRACH) is a group user equipment or a common user equipment is distinguished through the Preamble, and if the user equipment is the group user equipment, which group is the group user equipment is distinguished.

205. And after receiving the MSG2, the first group user equipment sending the MSG1 sends MSG3 to the eNB, wherein the MSG3 carries the CQI of the first group user equipment.

206. The eNB determines whether the MCS corresponding to the CQI of the first group user equipment is higher than the MCS adopted by the current group service, and if so, executes 2061; otherwise, 2062 is executed.

2061. And when the eNB judges that the MCS corresponding to the CQI of the first group of user equipment is higher than the MCS adopted by the current group service, the eNB refuses to allocate the SRS resource and the CQI resource to the first group of user equipment.

Specifically, the eNB rejects the first group of user equipments to enter the RRC connected state to reject allocation of SRS resources and CQI resources to the first group of user equipments; alternatively, the first and second electrodes may be,

the eNB allows the first group of user equipment to be in an online state. In the online state, the first group of user equipment enters an RRC connected state, but is not allocated with SRS resources and CQI resources.

2062. And when the eNB judges that the MCS corresponding to the CQI of the first group user equipment is lower than the MCS adopted by the current group service, the eNB judges whether to allocate the SRS resource and the CQI resource to the first group user equipment according to the residual resource condition of the resource pool, wherein the resource in the resource pool is allocated to the first group by the eNB from the idle resource. In the judging process, if the resources of the resource pool are sufficient, 20621 is executed; otherwise, 20622 is executed.

20621. And when the eNB judges that the residual resources of the resource pool are sufficient, allocating SRS resources and CQI resources for the first group of user equipment.

20622. When the eNB judges that the remaining resources of the resource pool are insufficient, the base station determines whether to allocate SRS resources and CQI resources to the first group of user equipment according to the CQI of the first group of user equipment and the CQI of a second group of user equipment, wherein the second group of user equipment is the group of user equipment which is already allocated with the SRS resources and the CQI resources in the first group, and the second group of user equipment is at least one. And removing the resource distributed to each second group of user equipment from the resource of the resource pool as the residual resource of the resource pool. Specifically, if the eNB determines that the CQI of the first group of user equipments is lower than the CQI of the at least one second group of user equipments, 206221 is executed; otherwise, 206222 is executed.

206221, when the eNB judges that the CQI of the first group user equipment is lower than the CQI of at least one second group user equipment which has been allocated with SRS resource and CQI resource in the first group, allowing the first group user equipment to preempt the resource of the second group user equipment which has been allocated with resource and has better CQI.

Specifically, when the eNB determines that the CQI of the first group of user equipment is lower than the CQI of the at least one second group of user equipment, the eNB triggers the at least one second group of user equipment to release the SRS resource and the CQI resource to the resource pool until the resource in the resource pool is sufficient for the first group of user equipment to use. For example, the eNB may trigger at least one second group user equipment to release the SRS resource and the CQI resource to the resource pool in order of the CQI of each second group user equipment from high to low, so that the resource in the resource pool becomes sufficient to allocate the resource to the first group user equipment. For another example, the eNB may randomly trigger one or more second groups of user equipments to release SRS resources and CQI resources to the resource pool.

Optionally, before the eNB determines whether the CQI of the first group of user equipment is lower than the CQI of the at least one second group of user equipment, to avoid affecting the common service, the eNB further determines whether there is a concurrent service on a downlink bearer of the second group of user equipment; and if the eNB judges that the downlink bearer of the second group of user equipment has the concurrent service, prohibiting the second group of user equipment from releasing the SRS resource and the CQI resource. And when the resources in the resource pool are not enough to be used by the first group of user equipment, triggering other second group of user equipment which is not forbidden to release the SRS resources and the CQI resources to release corresponding resources.

Specifically, for the second group of user equipments to which the SRS resource and the CQI resource have been allocated, the eNB determines, according to whether there is data transmission on its downlink bearer: if the downlink bearer of the second group of user equipment has data transmission, it indicates that the second group of user equipment has concurrent services. At this time, the eNB prohibits the resources of the second group of user equipments from being preempted.

206222, if the eNB judges that the CQI of the first group user equipment is higher than the CQI of all the second group user equipment, refusing to allocate the SRS resource and the CQI resource for the first group user equipment.

In the above steps, each second group device that releases the SRS resource and the CQI resource is in an online state, where the online state is: in the RRC connected state, but the SRS resource and the CQI resource are not allocated. The group user equipment in the online state may be regarded as a third group user equipment in the embodiment of the present invention. And if the number of the third group of user equipment in the first group is greater than a preset threshold, triggering the third group of user equipment to enter an idle state according to the sequence of the on-line time from short to long until the number of the third group of user equipment is not greater than the preset threshold. Next, how the eNB processes the third group of user equipments is described in detail as follows, which is specifically shown in step 207.

207. The eNB may preset a period T3 to periodically trigger the polling of the third group of user equipments. When polling of the third group of user equipments is triggered, the eNB selects a third group of user equipments, for example, a third group of user equipments with the longest time to be online, and allocates SRS resources and CQI resources from the resource pool. When the resources in the resource pool are insufficient, at least one second group user equipment in the first group is enabled to release the SRS resource and the CQI resource to the resource pool according to a certain rule, for example, according to the sequence from high CQI to low CQI, until the resources in the resource pool are enough for the polled third group user equipment to use.

In step 201, when a preset period T1 is finished, entering a next idle resource counting period, and if the eNB determines that the ratio of the idle resources to the total resources is smaller than the second threshold, executing step 208; otherwise, if the eNB determines that the variation of the ratio of the idle resource to the total resource is greater than the third threshold, step 209 is executed.

208. When the eNB is triggered to perform periodic idle resource statistics, it finds in the new idle resource assessment: the idle SRS resource ratio or the idle CQI resource ratio is less than a second threshold TH2(SRS) or TH2 (CQI). At this time, the eNB reclaims part or all of the resources allocated to the first group, so that all or part of the second group user equipments in the first group release the resources to become online users, that is, the third group user equipments.

209. When the eNB is triggered to perform periodic idle resource statistics, it finds out in the new idle resource evaluation: the idle SRS resource proportion or the idle CQI resource proportion changes and the change amount is larger than a third threshold TH3(SRS) or a third threshold TH3(CQI), and at the moment, the eNB recalculates the size of the resource pool allocated to the first group according to the new idle resource condition and the first scale factor; otherwise, if the variation of the ratio of the idle resources to the total resources is smaller than the third threshold, the size of the resource pool is kept unchanged.

In the processing procedure of the above steps, the idle SRS resource ratio and the idle CQI resource ratio of the eNB may change due to the state change of the non-group ue, i.e., the ue in normal service and the change of the number of groups supported. For example: when the user equipment of the normal service enters an RRC (radio resource control) connection state from an idle state to consume an air interface resource, the idle SRS resource proportion and the idle CQI resource proportion of the eNB are reduced; when the user equipment of the normal service enters an idle state from an RRC connected state and releases an air interface resource, the idle SRS resource proportion and the idle CQI resource proportion of the eNB are increased. When the number of groups supported by the eNB is reduced, the proportion of idle SRS resources and the proportion of idle CQI resources of the eNB are increased along with the release of the resource pool of some groups; as the number of supported groups increases, the proportion of idle SRS resources and the proportion of idle CQI resources of the eNB both decrease as the resource pool is successfully established for some groups.

When the increase or decrease of the idle resource proportion (the idle SRS resource proportion or the idle CQI resource proportion) of the eNB is larger than a third threshold value, the eNB recalculates the SRS resource amount and the CQI resource amount in the resource pool allocated to the first group according to the first scale factor. Corresponding processing can be further carried out on the reallocated resource pool. Specifically, when the resource in the reallocated resource pool expands, i.e. the resource increases, step 210 is executed; when the resources within the reallocated resource pool shrink, i.e. the resources decrease, 211 is performed.

210. And the base station allocates SRS resources and CQI resources for a third group of user equipment, wherein the third group of user equipment is in an online state.

Specifically, when the resource in the resource pool allocated by the eNB to the first group is expanded, the third group user equipment triggers polling event, and allocates SRS resource and CQI resource to the polled group user equipment from the resource pool. And when the resources in the resource pool are not enough, sequentially releasing the resources from the second group of users with the allocated resources according to the order of CQI from high to low until the resources in the resource pool are enough to be used by the third group of user equipment polled.

211. When the resources in the reallocated resource pool shrink and are not enough for all the second group user equipment, triggering at least one second group user equipment to release SRS resources and CQI resources to the resource pool until the resources in the resource pool are enough for the remaining second group user equipment to use.

Specifically, when the sum of the SRS resources and the sum of the CQI resources occupied by the second group of user equipments is greater than the SRS resources or the CQI resources in the resource pool of the first group, the base station triggers at least one second group of user equipments to release the SRS resources and the CQI resources to the resource pool until the sum of the SRS resources and the sum of the CQI resources occupied by the second group of user equipments is not greater than the SRS resources and the CQI resources in the resource pool of the first group.

In this step, when the resources in the resource pool allocated to the first group by the eNB are reduced, the second group ue is triggered to release the resources in an event. Specifically, when the sum of the resources occupied by the second group of user equipment is greater than the resources currently allocated by the eNB to the resource pool of the first group, the SRS resources and the CQI resources of the second group of user equipment are sequentially released in the order from high CQI to low CQI until the sum of the remaining SRS/CQ resources occupied by the second group of user equipment is not greater than the SRS/CQI resources currently allocated by the eNB to the resource pool of the first group.

In the embodiment of the present invention, when the eNB periodically triggers the RRC connection setup of the first group user equipment, the above steps 204, 205, and 206 are performed.

Fig. 2 is a schematic structural diagram of a base station according to a first embodiment of the present invention. The base station provided in this embodiment may implement each step of the method applied to the base station provided in any embodiment of the present invention. Specifically, the base station provided in this embodiment specifically includes:

a receiving module 11, configured to receive a channel quality indicator CQI sent by a first group of user equipment, where the first group of user equipment belongs to a first group;

a determining module 12, configured to determine whether the modulation and coding format MCS corresponding to the CQI received by the receiving module 11 is higher than an MCS used by a current group service;

a processing module 13, configured to refuse to allocate resources to the first group of user equipments if the determining module 12 determines that the MCS corresponding to the CQI is higher than the MCS used by the current group service, otherwise, determine whether to allocate the resources to the first group of user equipments according to a resource condition of a resource pool, where the resources in the resource pool are allocated to the first group by the base station according to a first scale factor, and the resources include SRS resources and CQI resources.

The base station provided by the embodiment of the invention, after receiving the CQI reported by the first group user equipment, determines whether the MCS corresponding to the CQI of the first group user equipment is higher than the MCS used by the current group service. If the number is higher than the preset value, the eNB refuses to allocate the SRS resource and the CQI resource for the eNB; otherwise, the base station judges whether to allocate SRS resources and CQI resources for the first group of user equipment according to the resource condition of the resource pool of the first group. In the process, the group user equipment in the same group shares the SRS resource pool and the CQI resource pool, so that the purpose of guaranteeing the cluster service by using limited resources is achieved.

Fig. 3 is a schematic structural diagram of a second embodiment of the base station. As shown in fig. 3, the base station of this embodiment further includes, on the basis of fig. 2:

an allocating module 14, configured to allocate the resource pool for a first group if idle resources are greater than a first threshold before the receiving module receives a channel quality indicator CQI sent by a first group of user equipment;

the processing module 13 is specifically configured to allocate the resource to the first group of user equipment when the determining module 12 determines that the resource in the resource pool is sufficient; otherwise, determining whether to allocate the resource to the first group user equipment according to the CQI of the first group user equipment and the CQI of a second group user equipment, where the second group user equipment is a group user equipment that has already allocated SRS resource and CQI resource in the first group, and the second group user equipment is at least one.

Optionally, in an embodiment of the present invention, the processing module 13 is specifically configured to, if the determining module 12 determines that the CQI of the first group of user equipment is lower than the CQI of at least one second group of user equipment, trigger the at least one second group of user equipment to release SRS resources and CQI resources to the resource pool until resources in the resource pool are enough for the first group of user equipment to use; allocating the resources for the first group of user devices from resources of the resource pool; otherwise, if the processing module 13 determines that the CQI of the first group of user equipments is higher than the CQIs of all the second group of user equipments, it is rejected to allocate resources to the first group of user equipments.

Optionally, in an embodiment of the present invention, the determining module 12 is further configured to determine whether there is a concurrent service on a downlink bearer of the second group of user equipment before the processing module 13 triggers at least one second group of user equipment to release SRS resources and CQI resources to the resource pool;

the processing module 13 is specifically configured to prohibit the second group user equipment from releasing the resource if the determining module 12 determines that the downlink bearer of the second group user equipment has the concurrent service.

Optionally, in an embodiment of the present invention, each of the second group devices releasing the SRS resource and the CQI resource is in an online state, and becomes a third group of user devices, where in the online state, each of the third group of user devices enters an RRC connected state, but is not allocated with the SRS resource and the CQI resource.

Optionally, in an embodiment of the present invention, the processing module 13 is further configured to periodically trigger polling of each third group of user equipments, and allocate the resource to at least one polled third group of user equipments.

Optionally, in an embodiment of the present invention, the processing module 13 is specifically configured to refuse the first group ue to enter an RRC connected state to refuse to allocate resources to the first group ue; or, allowing the first group of user equipments to be in an online state and become a third group of user equipments, wherein in the online state, each third group of user equipments enters an RRC connected state, but is not allocated with SRS resources and CQI resources.

Optionally, in an embodiment of the present invention, the processing module 13 is further configured to periodically count the idle resources before the allocating module 14 allocates the resource pool to the first group.

Optionally, in an embodiment of the present invention, the determining module 12 is further configured to determine, in a process of counting idle resources in two adjacent cycles, whether a variation of a ratio of the idle resources to total resources is greater than a third threshold;

the processing module 13 is further configured to, if the determining module 12 determines that the variation of the ratio of the idle resources to the total resources is greater than a third threshold, reallocate the resource pool for the first group according to the first scale factor; when the resource in the reallocated resource pool is expanded, triggering a third group of user equipment to poll, and allocating the resource for at least one polled third group of user equipment; otherwise, when the resources in the reallocated resource pool shrink and are not enough for all the second group user equipment to use, triggering at least one second group user equipment to release SRS resources and CQI resources to the resource pool until the resources in the resource pool are enough for the remaining second group user equipment to use;

the processing module 13 is further configured to keep the resource pool unchanged if the determining module 12 determines that the variation of the ratio of the idle resource to the total resource is smaller than a third threshold.

Optionally, in an embodiment of the present invention, the processing module 13 is further configured to periodically trigger the first group of user equipments to send the CQI to the base station before the receiving module 11 receives the channel quality indicator CQI sent by the first group of user equipments.

Those of ordinary skill in the art will understand that: all or a portion of the steps of implementing the above-described method embodiments may be performed by hardware associated with program instructions. The program may be stored in a computer-readable storage medium. When executed, the program performs steps comprising the method embodiments described above; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for sharing resources among group user devices, comprising:

2. The method of claim 1, wherein before the base station receives the channel quality indicator CQI sent by the first group of user equipments, further comprising:

3. The method of claim 2, wherein the base station determines whether to allocate the resource for the first group of user equipment according to the CQI of the first group of user equipment and the CQI of the second group of user equipment, comprising:

4. The method of claim 3, wherein before the base station triggers at least one of the second group of user equipments to release SRS resources and CQI resources to the resource pool, further comprising:

5. The method of claim 3, wherein each of the second group devices releasing SRS resources and CQI resources is in an online state to become a third group of user devices, and wherein each of the third group of user devices enters an RRC connected state in the online state, but is not allocated with SRS resources and CQI resources.

6. The method of claim 5, further comprising:

7. The method of claim 1, wherein the base station refusing to allocate resources for the first group of ues comprises:

8. The method of claim 5 or 6, wherein before the base station allocates the resource pool for the first group if the idle resources are greater than a first threshold, the method further comprises:

and the base station periodically counts the idle resources.

9. The method of claim 8, further comprising:

10. The method according to any one of claims 1 to 7, wherein before the base station receives the channel quality indicator CQI sent by the first group of user equipments, the method further comprises:

11. A base station, comprising:

12. The base station of claim 11, further comprising:

13. The base station of claim 12, wherein the processing module is specifically configured to trigger at least one of the second group user equipments to release SRS resources and CQI resources to the resource pool if the determining module determines that the CQI of the first group user equipment is lower than the CQI of at least one of the second group user equipments, until the resources in the resource pool are sufficient for the first group user equipment to use; allocating the resources for the first group of user devices from resources of the resource pool; otherwise, if the processing module determines that the CQI of the first group of user equipment is higher than the CQIs of all the second group of user equipment, the processing module refuses to allocate resources to the first group of user equipment.

14. The base station of claim 13, wherein the determining module is further configured to determine whether there is concurrent service on a downlink bearer of the second group of user equipments before the processing module triggers at least one of the second group of user equipments to release SRS resources and CQI resources to the resource pool;

15. The base station of claim 13, wherein each of the second group devices releasing SRS resources and CQI resources is in an online state and becomes a third group of user devices, and wherein each of the third group of user devices enters an RRC connected state in the online state, but is not allocated with SRS resources and CQI resources.

16. The base station of claim 15, wherein the processing module is further configured to periodically trigger each of the third groups of ues to poll and allocate the resource to at least one of the polled third groups of ues.

17. The base station of claim 11, wherein the processing module is specifically configured to reject the first group of ues from entering an RRC connected state to reject allocation of resources for the first group of ues; or, allowing the first group of user equipments to be in an online state and become a third group of user equipments, wherein in the online state, each third group of user equipments enters an RRC connected state, but is not allocated with SRS resources and CQI resources.

18. The base station according to claim 15 or 16, wherein the processing module is further configured to periodically count the idle resources before the allocating module allocates the resource pool for the first group.

19. The base station according to claim 18, wherein the determining module is further configured to determine whether a variation of a ratio of the idle resource to the total resource is greater than a third threshold in the idle resource counting process of two adjacent periods;

20. The base station according to any of claims 11 to 17, wherein the processing module is further configured to trigger the first group of user equipments to send the CQI to the base station periodically before the receiving module receives the channel quality indication CQI sent by the first group of user equipments.