CN107040901B - Group pilot frequency measurement gap configuration method and cluster system - Google Patents
Group pilot frequency measurement gap configuration method and cluster system Download PDFInfo
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- CN107040901B CN107040901B CN201610076203.8A CN201610076203A CN107040901B CN 107040901 B CN107040901 B CN 107040901B CN 201610076203 A CN201610076203 A CN 201610076203A CN 107040901 B CN107040901 B CN 107040901B
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- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
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Abstract
The application discloses a group pilot frequency measurement gap configuration method and a cluster system, wherein the method comprises the following steps: after receiving a group call establishment request sent by an EPC, an eNodeB configures a group pilot frequency measurement gap for a group call corresponding to the group call establishment request; broadcasting a group calling paging message to all UE of the group calling, wherein the group calling paging message carries the group pilot frequency measurement gap, so that all UE of the group calling establishes the group calling according to the group calling paging message, and periodically performs pilot frequency measurement according to the group pilot frequency measurement gap carried by the group calling paging message. By adopting the invention, when the TD-LTE cluster private network system adopts pilot frequency networking, the UE in the cluster group calling can not only normally carry out pilot frequency measurement, but also ensure that the UE can not lose group calling data when carrying out group calling service.
Description
Technical Field
The present invention relates to mobile communication technologies, and in particular, to a group pilot frequency measurement gap configuration method and a trunking system.
Background
When a TD-LTE (Time Division-Long Term Evolution) broadband trunking system adopts a pilot frequency mode for networking, a UE (User Equipment) needs to perform pilot frequency measurement on a pilot frequency neighboring cell, so that the UE can select a target cell for cell reselection or handover according to a Reference Signal Receiving Power (RSRP) of the neighboring cell. Because the receiver bandwidth of the UE is not enough to simultaneously cover the working frequency point of the source cell and the pilot frequency point of the neighboring cell, the UE measures the pilot frequency point of the neighboring cell at a certain time interval.
In the TD-LTE public network system, the main service is point-to-point single call service. When the TD-LTE public network system adopts inter-frequency networking, the UE can perform a single call service only in an RRC (Radio Resource Control) connected state. An eNodeB (Evolved Node B, Evolved base station) needs to configure an inter-frequency measurement gap (called a single-call inter-frequency measurement gap for convenience of distinguishing from a group inter-frequency measurement gap) for a UE, and during the single-call inter-frequency measurement gap, the UE hops from a working frequency point of a source cell to an inter-frequency where an adjacent cell is located to perform inter-frequency measurement. During the pilot frequency measurement gap, the UE and the eNodeB do not transmit and receive data at the working frequency point of the source cell until the pilot frequency measurement gap is finished, namely the UE finishes the pilot frequency measurement of the adjacent cell and returns to the working frequency point of the source cell. This mechanism ensures that no uplink or downlink data loss occurs between the UE and the eNodeB when the UE performs inter-frequency measurements. In the RRC idle state, since the UE does not have a single call service, when the UE performs inter-frequency measurement, an inter-frequency measurement gap is not needed.
In the TD-LTE trunking private network system, the UE has a private network service, typically a group call service, in addition to a single call service. For a group call called UE, the group call service may occur in an RRC idle state and an RRC connected state. When the pilot frequency networking is adopted, the group calling called UE in these two states needs to perform pilot frequency measurement on the neighboring cells in addition to receiving the group calling service. In other words, the group call called UE needs the inter-frequency measurement gap no matter in the RRC idle state or the RRC connected state, which is a characteristic that the TD-LTE trunking private network is different from the TD-LTE public network.
In order to avoid the UE losing the group call service data when performing the pilot frequency measurement, for the cluster group call service of the group, the eNodeB needs to configure the group pilot frequency measurement gaps uniformly for all UEs in the group call.
In the current implementation scheme of the TD-LTE public network, when the UE is in an RRC connected state, the eNodeB configures a single-call pilot frequency measurement gap to the UE through RRCConnection Reconfiguration, but cannot solve the problem that the UE loses group call data when performing a group call service.
Some TD-LTE trunking private network equipment manufacturers are researching the pilot frequency networking of the TD-LTE trunking system, but a configuration scheme of a group pilot frequency measurement gap is not provided yet.
Disclosure of Invention
In view of this, the main objective of the present invention is to provide a group pilot frequency measurement gap configuration method and a trunking system, so as to solve the problem that pilot frequency measurement gap configuration cannot be performed on all UEs in a trunking group call when a pilot frequency networking is adopted in a TD-LTE trunking private network system.
In order to achieve the purpose, the technical scheme provided by the invention is as follows:
a group pilot frequency measurement gap configuration method comprises the following steps:
after receiving a group call establishment request sent by an EPC, an eNodeB configures a group pilot frequency measurement gap for a group call corresponding to the group call establishment request;
broadcasting a group calling paging message to all UE of the group calling, wherein the group calling paging message carries the group pilot frequency measurement gap, so that all UE of the group calling establishes the group calling according to the group calling paging message, and periodically performs pilot frequency measurement according to the group pilot frequency measurement gap carried by the group calling paging message.
A trunking system for configuring group inter-frequency measurement gaps, the system comprising:
EPC, used for sending group call establishment request to eNodeB;
the eNodeB is used for receiving the group call establishment request sent by the EPC and configuring a group pilot frequency measurement gap for the group call corresponding to the group call establishment request;
the group calling system is also used for broadcasting a group calling paging message to all the UE of the group calling, wherein the group calling paging message carries the group pilot frequency measurement gap;
the UE of the group calling is used for receiving the broadcast group calling paging message broadcasted by the eNodeB, establishing the group calling according to the group calling paging message, and periodically performing pilot frequency measurement according to the group pilot frequency measurement gap carried by the group calling paging message.
In addition, since all UEs in a group call are allocated a uniform group pilot frequency measurement gap by the eNodeB, all UEs in the RRC connected state in the group call will end pilot frequency measurement at the same time and report a measurement report to the eNodeB at the same time. In order to avoid the problem and ensure that the UE can report the measurement report in time, the invention further comprises a scheme for reporting the measurement report by the UE in the group calling in a time-sharing manner.
In summary, the present invention provides a method for configuring group pilot frequency measurement gaps, in which, after receiving a group call establishment request of EPC, eNodeB configures group pilot frequency measurement gaps for the group call corresponding to the group call establishment request, and broadcasts the configured group pilot frequency measurement gaps in group call paging messages to all UEs of the group call, so that all UEs of the group call establish group calls according to the received group call paging messages, and periodically performs pilot frequency measurement according to the group pilot frequency measurement gaps carried in the group call paging messages, applying the technical solution of the present invention, eNodeB uniformly configures group pilot frequency measurement gaps for the group call to be established, and notifies all UEs of the group call to be established, so that all UEs of the group call to be established establish group calls, and performs pilot frequency measurement according to the group pilot frequency measurement gaps uniformly configured by eNodeB, thereby implementing pilot frequency networking in TD-LTE trunking private network system, the UE in the cluster group calling can not only normally carry out pilot frequency measurement, but also ensure that the UE does not lose group calling data when carrying out group calling service.
Drawings
FIG. 1 is a flow chart of the present invention;
FIG. 2 is a flow chart of an embodiment of the present invention;
fig. 3 is a schematic structural diagram of an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
The existing pilot frequency measurement gap mechanism of the TD-LTE public network has the following defects aiming at the cluster service:
(1) the existing pilot frequency measurement gap aims at a single-call service, namely a single-call pilot frequency measurement gap, and the problem that data may be lost when all UE in a group call service performs pilot frequency measurement cannot be solved.
(2) Only single call service can be achieved, that is, single UE is configured with single call pilot frequency measurement gap, and group pilot frequency measurement gap cannot be configured uniformly for all UEs in a group call.
(3) The inter-frequency measurement gap can only be configured for the UE in the RRC connected state, but cannot be configured for the UE in the RRC idle state.
Aiming at the problem, the invention provides a group pilot frequency measurement gap configuration method, and the core idea of the invention is as follows: the eNodeB responds to a group call establishment request sent by the EPC, uniformly configures group pilot frequency measurement gaps for a group call corresponding to the group call establishment request, carries the group pilot frequency measurement gaps in a group call paging message and broadcasts the group pilot frequency measurement gaps to all UE (user equipment) waiting to establish the group call, so that all the UE waiting to establish the group call according to the received group call paging message, and periodically performs pilot frequency measurement according to the group pilot frequency measurement gaps configured by the eNodeB.
Fig. 1 is a schematic method flow diagram of the technical solution of the present invention, and as shown in fig. 1, the method for configuring the group inter-frequency measurement gap mainly includes:
step 101: after receiving a group call establishment request sent by the EPC, the eNodeB configures a group pilot frequency measurement gap for the group call to be established corresponding to the group call establishment request.
In this step, the eNodeB receives a Group call establishment request sent by the EPC, and configures a Group pilot frequency measurement gap for a Group call to be established corresponding to the Group call establishment request based on a Group-radio network Temporary Identifier (G-RNTI). The eNodeB includes two parameters for the group pilot frequency measurement gap to be configured in group call unification: the method comprises the steps of measuring a group pilot frequency measurement gap period and a subframe offset O, wherein the subframe offset O is an initial subframe for starting group pilot frequency measurement in the group pilot frequency measurement gap period by UE (user equipment) to establish a group call. In order to ensure the user experience of the trunking service, the group inter-frequency measurement gap period in this embodiment still follows the inter-frequency measurement gap period specified by 3GPP (3rd Generation partnership project), i.e. the group inter-frequency measurement gap period is 40ms or 80 ms; for the subframe offset O, this embodiment provides a method for determining the subframe offset based on G-RNTI, when the eNodeB establishes a group call service, a G-RNTI is allocated to the group call, and the subframe offset O is calculated by the following formula:
when the group inter-frequency measurement gap period is 40ms, O equals to G mod40, that is, the subframe offset O is an integer, and O belongs to [0,39 ];
when the group inter-frequency measurement gap period is 80ms, O equals to G mod 80, that is, the subframe offset O is an integer, and O belongs to [0,79 ];
g is a G-RNTI allocated by the eNodeB for the group call to be established, the G-RNTI of each group call has uniqueness, and mod is modular operation.
For example, suppose that the group pilot frequency measurement gap period configured by the eNodeB for the group call to be established is 40ms, and one subframe is set every 1ms, that is, one group pilot frequency measurement gap period 40ms includes 40 subframes, subframe 0, subframe 1, subframe 2, …, and subframe 39, the G-RNTI allocated by the eNodeB for the group call to be established is 42, and the subframe offset O of the group call to be established is 2 calculated by O ═ Gmod40, that is, the starting subframe of the UE of the group call to be established starting group pilot frequency measurement in the group pilot frequency measurement gap period is subframe 2.
In fact, the group pilot frequency measurement gap includes, in addition to two parameters, namely, a group pilot frequency measurement gap period and a subframe offset, a group pilot frequency measurement gap duration, that is, a duration for the pilot frequency measurement of the group calling UE to be performed, and since the group pilot frequency measurement gap duration is a fixed duration of 6ms, that is, according to the 3GPP specification, the eNodeB and the UE uniformly default that the group pilot frequency measurement gap duration is 6ms, when the eNodeB configures the group pilot frequency measurement gap for the group calling to be established, only two parameters, namely, the group pilot frequency measurement gap period and the subframe offset, are configured.
Step 102: the eNodeB broadcasts a group calling paging message to all the UEs which are to establish the group calling, wherein the group calling paging message carries the group pilot frequency measurement gap configured for the group calling to be established by the eNodeB, so that all the UEs which are to establish the group calling according to the group calling paging message, and periodically performs pilot frequency measurement according to the group pilot frequency measurement gap carried by the group calling paging message.
In this step, the eNodeB carries the group pilot frequency measurement gap configured for the group call to be established in step 101 in the group call paging message, and broadcasts the group pilot frequency measurement gap to all UEs in the designated cell, where the designated cell is a cell where all UEs in the group call to be established are located, and the EPC informs the eNodeB through a TA list (Tracking Area list). All the UEs of the designated cell receive the group call paging message broadcast by the eNodeB, but only the UE which is to establish the group call processes the group call paging message, and other UEs discard the group call paging message.
Specifically, the eNodeB sends an improved TrunkingPaging message to all UEs that are to establish a group call, where a group paging list of the improved TrunkingPaging message carries an added group pilot frequency measurement gap configured by the eNodeB for the group call to be established.
After all UE (user equipment) which wait for establishing the group call receives a group call paging message sent by an eNodeB (eNodeB), establishing the group call according to a conventional cell carried by the group call paging message, storing a group pilot frequency measurement gap carried by the group call paging message, and periodically performing pilot frequency measurement according to the group pilot frequency measurement gap.
By the method of this embodiment, the eNodeB uniformly configures the group pilot frequency measurement gaps for the group call to be established, and can disperse the group pilot frequency measurement gaps of different group calls in the time domain, thereby avoiding that all UEs of different group calls in the same cell end pilot frequency measurement at the same time in a concentrated manner, and report a pilot frequency measurement report to the eNodeB to cause an uplink signaling storm, which results in insufficient uplink resources of an air interface, uplink new channel blocking, and network performance reduction.
Because all the UEs of a group call are configured with a uniform group pilot frequency measurement gap by the eNodeB, all the UEs in the RRC connected state in the group call will end pilot frequency measurement at the same time and report a pilot frequency measurement report to the eNodeB at the same time. Therefore, in another embodiment of the present invention, the eNodeB further configures a time-sharing reporting measurement report start identifier for the group call, and carries the time-sharing reporting measurement report start identifier in the group call paging message.
When the starting mark of the time-sharing reported measurement report is a default value, all the UE of the group call do not start a time-sharing reported pilot frequency measurement report mechanism, namely when all the UE of the group call finish pilot frequency measurement in a group pilot frequency measurement gap period, the UE in an RRC connection state simultaneously sends a pilot frequency measurement report to an eNodeB, and the condition is suitable for the condition that uplink resources are more sufficient;
when the start Identifier of the measurement report reported in a time-sharing manner is a preset value, all the UEs in the RRC connection state of the group call start a mechanism for reporting the different-frequency measurement report in a time-sharing manner, that is, all the UEs in the RRC connection state of the group call calculate the delay time D of the different-frequency measurement report respectively according to D ═ Cmod 10, where C is a Cell-Radio Network Temporary Identifier C-RNTI (Radio Network Temporary Identifier) of the UE in the RRC connection state, and then, when the different-frequency measurement of all the UEs in the RRC connection state is finished simultaneously in a group different-frequency measurement gap period, D subframes obtained by calculation are delayed to report the different-frequency measurement report to the eNodeB, which is applicable to the situation of insufficient uplink resources. For example, if the C-RNTI of a UE in an RRC connected state in a group call is 15 and the delay time D calculated from D ═ Cmode 10 is 5, the UE finishes inter-frequency measurement in one group inter-frequency measurement gap period, and then transmits an inter-frequency measurement report to the eNodeB by delaying 5 subframes.
Whether a time-sharing reporting pilot frequency measurement report mechanism is started or not, when the UE in the RRC connection state can report a pilot frequency measurement report to the eNodeB (that is, after the UE in the RRC connection state, which does not start the time-sharing reporting pilot frequency measurement report mechanism, ends the pilot frequency measurement and delays D subframes), if a latest uplink subframe has enough PUSCH (Physical uplink shared Channel) resources, the UE immediately sends the pilot frequency measurement report to the eNodeB; if the PUSCH resource is insufficient, the UE reports a BSR (Buffer Status Report) to an eNodeB to request uplink authorization; and if no PUSCH resource exists, the UE reports the Scheduling Request to the eNodeB in the latest Scheduling Request period to Request uplink authorization.
Specifically, the eNodeB configures a time-sharing reported measurement report start identifier "measReportDelayInd" for each group call in a group call paging list of a sounding paging message, when the measReportDelayInd in the sounding paging message broadcasted by the eNodeB to all the UEs that are to establish a group call is set to "True", the time-sharing reported pilot measurement report start identifier is represented as a preset value, and when the sounding paging message broadcasted by the eNodeB to all the UEs that are to establish a group call does not carry the measReportDelayInd identifier, the time-sharing reported pilot measurement report start identifier is represented as a default value.
In order to ensure that all UEs in a group call can normally perform pilot frequency measurement and simultaneously cannot lose group call service data, in this embodiment, after a group call is successfully established, all UEs in the group call start pilot frequency measurement respectively in each pilot frequency measurement period when a subframe offset O arrives, and last for 6ms, an eNodeB does not send signaling and service data of the group call during the pilot frequency measurement period, and all UEs in the group call do not receive the signaling and service data of the group call;
after the pilot frequency measurement is finished, i.e. the pilot frequency measurement lasts for 6ms, the eNodeB continues to send the signaling and the service data of the group call, and all the UEs of the group call continue to receive the signaling and the service data of the group call.
Thus, all the UEs of the group call carry out pilot frequency measurement at the same time, and group call signaling and group call service traffic do not carry out between the eNodeB and the UEs in the group call during the pilot frequency measurement period; because the starting subframes of all the UEs of the group call starting the pilot frequency measurement are the same, and the duration of the pilot frequency measurement is also the same, all the UEs of the group call can finish the pilot frequency measurement at the same time, and then the group call signaling and the group call service are continuously carried out between the eNodeB and the UEs of the group call, thereby ensuring that all the UEs of the group call can not lose the group call service data during the pilot frequency measurement.
Furthermore, after receiving the group call release request sent by the EPC, the eNodeB broadcasts a group call release message to all UEs of the group call corresponding to the group call release request, and for convenience of description, the group call corresponding to the group call release request is called a group call to be released, and the group call release message carries an identifier of the group call to be released, so that all UEs of the group call to be released determine the group call to be released according to the identifier carried in the group call release message, and clear the measurement gap of the different frequencies of the group with the group call to be released. And the eNodeB determines the corresponding group call to be released according to the group call release request, releases the group call, and comprises clearing the group pilot frequency measurement gap configured for the group call to be released.
Fig. 2 is a flowchart of a group inter-frequency measurement gap configuration according to the present invention, as shown in fig. 2, including the following steps:
step 201: the EPC sends a group call setup request to the eNodeB.
Step 202: and the eNodeB configures a group pilot frequency measurement gap to be established corresponding to the group call establishment request based on the G-RNTI.
Step 203: the eNodeB broadcasts a group call paging message.
The group calling paging message carries a group pilot frequency measurement gap configured by the eNodeB for the group calling to be established, and carries a time-sharing reported pilot frequency measurement report identifier, and the time-sharing reported pilot frequency measurement report identifier is a preset value.
Step 204: all UEs which are waiting to establish group calling receive the group calling paging message, establish group calling and receive group calling service.
Step 205 a: when the sub-frame offset of the group pilot frequency measurement gap period reaches, the UE performs pilot frequency measurement for 6ms, and does not receive downlink group call signaling and group call service data during the pilot frequency measurement period.
Step 205 b: when the sub-frame offset of the group pilot frequency measurement gap period reaches for 6ms, the eNodeB does not send downlink group call signaling and group call service data.
This step is performed simultaneously with step 205 a.
Step 206: and after the group pilot frequency measurement is finished, the UE continues to receive the downlink group call signaling and the group call service data and reports the pilot frequency measurement report in a time-sharing manner.
Step 207: the EPC sends a group call release request to the eNodeB.
Step 208: the eNodeB sends a group call release message.
The group call release message carries the identifier of the group call to be released.
Step 209: UE releases the group call and clears the measurement gap of the group pilot frequency of the group call.
Step 210: and the eNodeB releases the group call corresponding to the group call release request and clears the group pilot frequency measurement gap of the group call.
The present invention also provides a cluster system, which is used for configuring a group pilot frequency measurement gap, as shown in fig. 3, and the system includes:
EPC, used for sending group call establishment request to eNodeB;
the eNodeB is used for receiving the group call establishment request sent by the EPC and configuring a group pilot frequency measurement gap for the group call corresponding to the group call establishment request;
the group calling system is also used for broadcasting a group calling paging message to all the UE of the group calling, wherein the group calling paging message carries the group pilot frequency measurement gap;
the UE of the group calling is used for receiving the broadcast group calling paging message broadcasted by the eNodeB, establishing the group calling according to the group calling paging message, and periodically performing pilot frequency measurement according to the group pilot frequency measurement gap carried by the group calling paging message.
The group call paging message broadcasted by the eNodeB also carries a time-sharing reporting measurement report starting identifier configured by the eNodeB for the group call.
When the time-sharing reporting measurement report starting identifier is a default value, all the UE of the group call do not start a time-sharing reporting pilot frequency measurement report mechanism;
and when the starting identifier of the time-sharing reported measurement report is a preset value, all the UEs in the RRC connection state of the group call calculate the delay time D of reporting the pilot frequency measurement report respectively according to D-C mode 10, wherein C is the cell radio network temporary identifier C-RNTI of the UE in the RRC connection state.
The group pilot frequency measurement gap comprises a group pilot frequency measurement gap period and a subframe offset O;
the configuring the group pilot frequency measurement gap for the group call to be established corresponding to the group call establishing request comprises the following steps:
the eNodeB configures a group pilot frequency measurement gap period for the group call to be established, wherein the group pilot frequency measurement gap period is 40ms or 80 ms;
the eNodeB configures a subframe offset O for the group call to be established according to the following formula:
when the group pilot frequency measurement gap period is 40ms, G mod 40;
when the group pilot frequency measurement gap period is 80ms, G mod 80;
and G is the G-RNTI of the group call.
The UE of the group call is further configured to:
after the group call is successfully established, in each group pilot frequency measurement gap period, when the subframe offset O arrives, starting group pilot frequency measurement and lasting for 6ms, wherein the eNodeB does not send the signaling and the service data of the group call during the pilot frequency measurement period, and the UE of the group call does not receive the signaling and the service data of the group call;
and after the group pilot frequency measurement is finished, the eNodeB sends the signaling and the service data of the group call, and the UE of the group call receives the signaling and the service data of the group call.
The eNodeB receives a group call release request sent by the EPC, broadcasts a group call release message to all UEs of a group call corresponding to the group call release request, wherein the group call release message carries an identifier of the group call to be released, so that all UEs of the group call corresponding to the group call release request determine the group call to be released according to the identifier, and clears a group pilot frequency measurement gap of the group call to be released;
and the eNodeB clears the group pilot frequency measurement gap of the group call corresponding to the group call release request.
In summary, the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A group pilot frequency measurement gap configuration method is characterized by comprising the following steps:
after receiving a group call establishment request sent by an EPC, an eNodeB configures a group pilot frequency measurement gap for a group call corresponding to the group call establishment request;
broadcasting a group calling paging message to all UE of the group calling, wherein the group calling paging message carries the group pilot frequency measurement gap, so that all UE of the group calling establishes the group calling according to the group calling paging message, and periodically performs pilot frequency measurement according to the group pilot frequency measurement gap carried by the group calling paging message; the group call paging message carries a time-sharing reporting measurement report starting identifier configured for the group call by the eNodeB;
when the time-sharing reporting measurement report starting identifier is a default value, all the UE of the group call do not start a time-sharing reporting pilot frequency measurement report mechanism;
and when the time-sharing reporting measurement report starting identifier is a preset value, calculating the delay time D of reporting the pilot frequency measurement report by all the UE in the RRC connection state of the group call according to D-C mod 10, wherein C is the cell radio network temporary identifier C-RNTI of the UE in the RRC connection state of the group call.
2. The method of claim 1,
the group pilot frequency measurement gap comprises a group pilot frequency measurement gap period and a subframe offset O;
the group pilot frequency measurement gap configured for the group call corresponding to the group call establishment request comprises the following steps:
the eNodeB configures a group pilot frequency measurement gap period for the group call, wherein the group pilot frequency measurement gap period is 40ms or 80 ms;
the eNodeB configures a subframe offset O for the group call according to the following formula:
when the group pilot frequency measurement gap period is 40ms, G mod 40;
when the group pilot frequency measurement gap period is 80ms, G mod 80;
and G is the G-RNTI of the group call.
3. The method according to claim 2, wherein said periodically performing pilot frequency measurement according to said group pilot frequency measurement gaps carried in said group call paging message includes:
after the group call is successfully established, in each group pilot frequency measurement gap period, when the subframe offset O arrives, all UE of the group call respectively starts group pilot frequency measurement and lasts for 6ms, an eNodeB does not send signaling and service data of the group call during the group pilot frequency measurement period, and all UE of the group call do not receive the signaling and service data of the group call;
when the group pilot frequency measurement is finished, the eNodeB sends the signaling and the service data of the group call, and all the UEs of the group call receive the signaling and the service data of the group call.
4. The method of claim 1, further comprising:
the eNodeB receives a group call release request sent by the EPC;
broadcasting a group call release message to all UE of the group call corresponding to the group call release request, wherein the group call release message carries an identifier of the group call to be released, so that all UE of the group call corresponding to the group call release request determines the group call to be released according to the identifier and clears a group pilot frequency measurement gap of the group call to be released;
and the eNodeB clears the group pilot frequency measurement gap of the group call corresponding to the group call release request.
5. A trunking system, wherein the system is configured to configure group inter-frequency measurement gaps, the system comprising:
EPC, used for sending group call establishment request to eNodeB;
the eNodeB is used for receiving the group call establishment request sent by the EPC and configuring a group pilot frequency measurement gap for the group call corresponding to the group call establishment request;
the group calling system is also used for broadcasting a group calling paging message to all the UE of the group calling, wherein the group calling paging message carries the group pilot frequency measurement gap; the group call paging message also carries a time-sharing reporting measurement report starting identifier configured by the eNodeB for the group call;
the UE of the group call is used for receiving the group call paging message broadcast by the eNodeB, establishing the group call according to the group call paging message and periodically performing pilot frequency measurement according to the group pilot frequency measurement gap carried by the group call paging message; when the time-sharing reporting measurement report starting identifier is a default value, the UE of the group call does not start a time-sharing reporting pilot frequency measurement report mechanism; and when the starting identifier of the time-sharing reported measurement report is a preset value and the UE of the group call is in an RRC connection state, calculating the delay time D of reporting the pilot frequency measurement report respectively according to D-C mod 10, wherein C is the cell radio network temporary identifier C-RNTI of the UE in the RRC connection state.
6. The cluster system of claim 5,
the group pilot frequency measurement gap comprises a group pilot frequency measurement gap period and a subframe offset O;
the group pilot frequency measurement gap configured for the group call corresponding to the group call establishment request comprises the following steps:
the eNodeB configures a group pilot frequency measurement gap period for the group call, wherein the group pilot frequency measurement gap period is 40ms or 80 ms;
the eNodeB configures a subframe offset O for the group call according to the following formula:
when the group pilot frequency measurement gap period is 40ms, G mod 40;
when the group pilot frequency measurement gap period is 80ms, G mod 80;
and G is the G-RNTI of the group call.
7. The trunking system of claim 6 wherein the UE that is to establish the group call is further configured to:
after the group call is successfully established, in each group pilot frequency measurement gap period, when the subframe offset O arrives, starting group pilot frequency measurement and lasting for 6ms, wherein the eNodeB does not send the signaling and the service data of the group call during the pilot frequency measurement period, and the UE of the group call does not receive the signaling and the service data of the group call;
and after the group pilot frequency measurement is finished, the eNodeB sends the signaling and the service data of the group call, and the UE of the group call receives the signaling and the service data of the group call.
8. The cluster system of claim 5,
the eNodeB is also used for receiving a group call release request sent by the EPC;
broadcasting a group call release message to all UE of the group call corresponding to the group call release request, wherein the group call release message carries an identifier of the group call to be released, so that all UE of the group call corresponding to the group call release request determines the group call to be released according to the identifier and clears a group pilot frequency measurement gap of the group call to be released;
and the eNodeB clears the group pilot frequency measurement gap of the group call corresponding to the group call release request.
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