CN109699014B - Method and device for pre-establishing MBMS (multimedia broadcast multicast service) bearer - Google Patents
Method and device for pre-establishing MBMS (multimedia broadcast multicast service) bearer Download PDFInfo
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- CN109699014B CN109699014B CN201710996773.3A CN201710996773A CN109699014B CN 109699014 B CN109699014 B CN 109699014B CN 201710996773 A CN201710996773 A CN 201710996773A CN 109699014 B CN109699014 B CN 109699014B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- 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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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- 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
- H04W4/08—User group management
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- 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
- H04W4/10—Push-to-Talk [PTT] or Push-On-Call services
Abstract
The application provides a method for pre-establishing MBMS bearing, which comprises the following steps: counting the emergency group calling times and the non-emergency group calling times of each group in each period in a preset period, and determining the typical values of the emergency group calling times and the non-emergency group calling times of each group in each period; determining MBMS bearing pre-established weight of the group in the corresponding time period according to the group priority, the expected MBMS bearing efficiency of the group in the MBSFN service area and the determined typical values of the emergency group calling times and the non-emergency group calling times corresponding to each time period; and preferentially distributing MBMS bearing pre-established resources to the groups with the high MBMS bearing pre-established weight aiming at each group of each time period, and performing MBMS bearing pre-establishment. Based on the same inventive concept, the application also provides a device for pre-establishing the MBMS bearer, which can improve the service efficiency of MBMS bearer resources and improve the system performance.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for pre-establishing an MBMS bearer.
Background
The LTE system has the advantages of high peak rate, low time delay, large system capacity, simple network architecture, low operation cost and the like. The trunking voice, data and video services provided by a broadband trunking (radio over cellular) system based on LTE can be used To meet public safety or general commercial applications.
The MCPTT broadband trunking communication system is based on an LTE network architecture, adopts EPS unicast bearer or Multimedia Broadcast Multicast Service (MBMS) bearer, and realizes trunking group communication functions of group calling, single calling, Broadcast calling and the like through an MCPTT application server and MCPTT client application software of terminal UE through an IP Multimedia Subsystem (IMS) network architecture.
The MBMS supports two modes of multimedia broadcast service and multicast service, can directly broadcast multimedia video information to all users, can also be sent to a group of signed users for watching, and can help operators to develop various commercial applications such as multimedia advertisement, free and charged television channels, multimedia message group sending and the like. The operators can develop the mobile TV service with lower network deployment cost.
The uplink data transmission of the LTE MCPTT broadband trunking communication system uses EPS unicast bearing, and the downlink data transmission can use EPS unicast bearing or MBMS bearing.
The broadband cluster server can use EPS unicast load to transmit downlink media data when the group communication session starts, and the server dynamically establishes MBMS load when determining to use MBMS load to transmit downlink media data according to a local strategy. When the terminal user starts to use the MBMS load to receive the downlink media data, the terminal informs the server to stop the unicast load to transmit the downlink media data.
The broadband trunking server may also pre-establish an MBMS bearer in a pre-configured multicast single frequency network (MBSFN) service area before the group communication session starts, and when a user initiates a group communication session request, the server performs downlink media data transmission for the users participating in the group communication session in the MBSFN service area through the pre-established MBMS bearer.
The cluster server adopts the pre-established MBMS bearer, and the MBMS bearer is pre-established for downlink data transmission before the group communication session begins, so that the downlink data transmission delay can be reduced, and the service requirement of an industrial user on the higher requirement on the data transmission delay performance can be met.
In the existing realization, the pre-established MBMS bearer adopts a static configuration mode, and the MBMS bearer is pre-established in a pre-configured MBSFN service area. The way of server static configuration MBMS bearer inevitably generates part of pre-established MBMS bearer resources in idle state, and under the condition of busy system service and shortage of MBMS bearer resources, MBMS bearer resource waste affects user experience and system performance.
How to adapt to network conditions and service requirements in downlink data transmission of a trunking communication system, reasonably distributing pre-established MBMS bearer resources, meeting group session requirements under different groups and different scenes, and improving the service efficiency and system performance of MBMS bearer is the technical problem to be solved by the application.
Disclosure of Invention
In view of this, the present application provides a method and an apparatus for MBMS bearer pre-establishment, which can improve the utilization efficiency of MBMS bearer resources and improve system performance.
In order to solve the technical problem, the technical scheme of the application is realized as follows:
a method for MBMS bearer pre-establishment comprises the following steps:
counting the emergency group calling times and the non-emergency group calling times of each group in each period in a preset period, and determining the typical values of the emergency group calling times and the non-emergency group calling times of each group in each period;
determining MBMS bearing pre-established weight of the group in the corresponding time period according to the group priority, the expected MBMS bearing efficiency of the group in the MBSFN service area and the determined typical values of the emergency group calling times and the non-emergency group calling times corresponding to each time period;
and preferentially distributing MBMS bearing pre-established resources to the groups with the high MBMS bearing pre-established weight aiming at each group of each time period, and performing MBMS bearing pre-establishment.
The determining the MBMS bearer pre-established weight of the group in the corresponding time period according to the group priority, the expected MBMS bearer efficiency of the group in the MBSFN service area, and the determined typical values of the emergency group call times and the non-emergency group call times corresponding to each time period comprises the following steps:
configuring corresponding MBMS load pre-establishing weight factors aiming at the group priority; configuring corresponding MBMS bearing pre-established weight factors aiming at the expected MBMS bearing efficiency of a group in an MBSFN service area; configuring corresponding MBMS load pre-establishing weight factors aiming at the typical value of the emergency group calling times and the typical value of the non-emergency group calling times; the sum of the MBMS load pre-established weight factor corresponding to the typical value of the emergency group calling times and the MBMS load pre-established weight factor corresponding to the typical value of the non-emergency group calling times is 1;
and aiming at any period, respectively weighting the group priority, the expected MBMS bearing efficiency of the group in the MBSFN service area, the typical value of the emergency group calling times and the typical value of the non-emergency group calling times by using a corresponding MBMS bearing pre-established weight factor, and summing to obtain the MBMS bearing pre-established weight of the group in the corresponding period.
The method comprises the following steps of counting the emergency group call times and the non-emergency group call times of each group in each period in a preset period, and determining typical values of the emergency group call times and the non-emergency group call times in each period, wherein the typical values comprise:
acquiring group calling information data in each time period in a preset period;
counting the emergency group calling times and non-emergency group calling times of each group in a preset period aiming at any time interval;
and determining typical values of the emergency group calling times and the non-emergency group calling times of each group in each period according to a preset rule.
The expected MBMS bearing efficiency of the group in the MBSFN service area is the ratio of the number of group member users of the group in the MBMSF server to the MBMS bearing bandwidth corresponding to the group session media data transmission.
Wherein the method further comprises: and allocating the duration of the pre-established MBMS bearer for each time period.
When the duration of the pre-established MBMS bearer configured for any period is greater than the duration of the period, the method further includes: step (ii) of
A. When MBMS load bearing pre-establishment is carried out aiming at any group, if it is determined that no available MBMS load bearing pre-establishment load bearing resource exists, determining whether a group which is carried out MBMS load bearing pre-establishment exists, if so, executing the step B; otherwise, executing step D;
B. determining whether a group with MBMS bearer pre-establishment weight smaller than that of the group needing MBMS bearer pre-establishment currently exists, and if so, executing the step C; otherwise, executing step D;
C. preempting the MBMS bearer pre-established bearer resource of the group with the small MBMS bearer pre-established weight, performing MBMS bearer pre-establishment for the group which needs MBMS bearer pre-establishment currently, and ending the flow;
and D, not carrying out MBMS bearing pre-establishment for the group which needs MBMS bearing pre-establishment currently.
Wherein the content of the first and second substances,
when the sizes of the MBMS bearer pre-establishment weights of the two groups are compared, the sizes of the MBMS bearer pre-establishment weights of the two groups aiming at the group in the same time period are compared.
Wherein, the preempting the MBMS bearer pre-established bearer resource of the group with the small MBMS bearer pre-established weight includes:
determining a set of groups which are subjected to MBMS bearer pre-establishment and have MBMS bearer pre-establishment weights smaller than the current MBMS bearer pre-establishment weights;
sequentially selecting from the group with the minimum MBMS bearer pre-established weight to the group with the maximum MBMS bearer pre-established weight in the set until the bandwidth of each selected group and the bandwidth of the group which meets the current requirement of establishing the MBMS bearer;
and carrying out MBMS bearing pre-establishment resource preemption on the selected group, and carrying out MBMS bearing pre-establishment.
Wherein the method further comprises:
and when the sum of the bandwidths of all the groups in the set can not meet the requirement of the group which needs to be subjected to MBMS bearing pre-establishment currently, not performing MBMS bearing pre-establishment for the group which needs to be subjected to MBMS bearing pre-establishment currently.
An MBMS bearer pre-establishment apparatus, the apparatus comprising: the device comprises a statistical unit, a first determining unit, a second determining unit and an establishing unit;
the statistical unit is used for counting the emergency group calling times and the non-emergency group calling times of each group in each period in a preset period;
the first determining unit is used for determining the typical values of the emergency group calling times and the non-emergency group calling times which are obtained by the counting unit of each group in each period;
the second determining unit is used for determining MBMS bearing pre-established weight of the group in the corresponding time period according to the group priority, the expected MBMS bearing efficiency of the group in the MBSFN service area, and the typical values of the emergency group calling times and the non-emergency group calling times corresponding to each time period determined by the first determining unit;
the establishing unit preferentially allocates MBMS bearing pre-established bearing resources to the group with the larger MBMS bearing pre-established weight determined by the second determining unit aiming at each group of each time period, and performs MBMS bearing pre-establishment.
According to the technical scheme, the server determines the MBMS bearing pre-established weight of each group in each period based on the group priority, the expected MBMS bearing efficiency of the group in the MBSFN service area and the typical values of the emergency group call times and the non-emergency group call times, dynamically manages the MBMS bearing pre-established weight of the group according to the MBMS bearing pre-established weight period, preferentially performs MBMS bearing pre-establishment on the group with high MBMS bearing pre-established weight in the current period, preferentially meets the downlink media data transmission requirements of the group with high priority, high expected MBMS bearing efficiency and large traffic, can improve the use efficiency of MBMS bearing resources, and improves the system performance.
Drawings
Fig. 1 is a schematic view illustrating a MBMS bearer pre-establishment procedure in an embodiment of the present application;
fig. 2 is a schematic diagram illustrating a flow of preempting a pre-established MBMS bearer resource in an embodiment of the present application;
fig. 3 is a schematic diagram of a flow of preempting a pre-established resource of an MBMS bearer in a third embodiment of the present application;
fig. 4 is a schematic structural diagram of an apparatus applied to the above-described technology in the embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly apparent, the technical solutions of the present invention are described in detail below with reference to the accompanying drawings and examples.
The application provides a method for pre-establishing MBMS bearing, a server determines the MBMS bearing pre-establishment weight of each group in each period based on the group priority, the expected MBMS bearing efficiency of the group in an MBSFN service area, and the typical values of the emergency group calling times and the non-emergency group calling times, dynamically manages the group MBMS bearing pre-establishment according to the MBMS bearing pre-establishment weight period, preferentially performs MBMS bearing pre-establishment for the group with high MBMS bearing pre-establishment weight in the current period, preferentially meets the downlink media data transmission requirements of the group with high priority, high expected MBMS bearing efficiency and large traffic, can improve the use efficiency of MBMS bearing resources, and improves the system performance.
In the specific implementation of the present application, the relevant information configured by the system is as follows:
a resource pool used for pre-establishing MBMS load, wherein the pre-established MBMS load resources required by the pre-established MBMS load come from the resource pool;
the system configures the group priority, and takes the high priority with a high priority value as an example in the embodiment of the present application according to the existing implementation configuration.
The present application requires newly added configuration information:
a terminal user position reporting period, a position reporting trigger condition and an MBSFN service area range.
Configuring a pre-established MBMS load weight factor corresponding to the group priority aiming at each group priority, wherein the value of the factor is a value between [0 and 1] during specific implementation, if the group with high group priority is expected to perform MBMS load pre-establishment preferentially, the value of the factor is set to be relatively large, and the factor can be set according to actual application conditions during specific implementation.
For different time periods, the pre-established MBMS bearer weight factors corresponding to the configured group priorities may be the same or different, so that it is flexibly achieved in which time period the group priorities contribute more to the pre-established MBMS bearer weight factors.
Configuring a preset period, namely performing a statistical period of the emergency group calling times and the non-emergency group calling times, and if data analysis is performed for 30 days, configuring the preset period for 30 days.
The length of the time period is configured, the time length of each day is divided into different time periods to serve as the length of the time period, and the divided time periods can be the same or different in length. For example, each hour may be divided into a time period, each hour of the day may also be divided into a time period, and the night may be divided into two time periods, etc., which may be divided according to specific implementations, and the time period division manner is not limited in the present application.
Configuring MBMS load pre-establishing weight factors corresponding to the typical value of the emergency group calling times and the typical value of the non-emergency group calling times; the sum of the MBMS load pre-established weight factors corresponding to the typical value of the emergency group calling times and the MBMS load pre-established weight factors corresponding to the typical value of the non-emergency group calling times is 1;
the MBMS bearer pre-established weight factors corresponding to the typical values of the emergency group call times and the typical values of the non-emergency group call times configured for different periods of time can be the same or different. Therefore, the typical value of the group calling times in which period can be flexibly realized to have greater contribution to the MBMS bearer pre-established weight factor.
The server counts the emergency group calling times and the non-emergency group calling times of each group in each period in a preset period, and the method is specifically realized as follows:
the server acquires group call information data in each time period in a preset period;
counting the emergency group calling times and non-emergency group calling times of each group in a preset period aiming at any time interval;
and determining typical values of the emergency group calling times and the non-emergency group calling times of each group in each period according to a preset rule.
In a specific implementation, the MBMS bearer pre-established weight factor may be determined according to actual needs by using a parameter other than the number of calls in the group call information data as a typical value, which is taken as an example in the embodiment of the present application.
In specific implementation, the preset rule may be to average the number of calls, or to analyze data distribution information and average the number of calls concentrated in a preset range.
In the present embodiment, the typical values of the plurality of data may be determined by a conventional method or a pre-configured method, without limitation.
The mode of the server for determining the expected MBMS bearing efficiency of the group in the MBSFN service area is as follows:
the server calculates the number of the group member users of each group in the MBSFN service area according to the position reporting information of the terminal user;
the server calculates the expected MBMS bearing efficiency of each group in the MBSFN service area according to the number of group member users and the media data transmission bandwidth of the group session (voice, video and data services) of each group in the MBSFN service area, which comprises the following steps:
MbmsEfficiency＝userNumber/mediaBandwidth
wherein the content of the first and second substances,
the userNumber is the number of group member users of the group in the MBSFN service area;
the mediaBandwidth is the MBMS bearer bandwidth corresponding to the group session (voice, video or data service) media data transmission.
Example one
Referring to fig. 1, fig. 1 is a schematic diagram illustrating a MBMS bearer pre-establishment procedure in a first embodiment of the present application. The method comprises the following specific steps:
In this step, the server determines the MBMS bearer pre-established weight of each group according to the group priority, and the determined typical values of the emergency group call times and the non-emergency group call times for any period of time, including:
and aiming at any period, respectively weighting the group priority, the expected MBMS bearing efficiency of the group in the MBSFN service area, the typical value of the emergency group calling times and the typical value of the non-emergency group calling times by using a corresponding MBMS bearing pre-established weight factor, and summing to obtain the MBMS bearing pre-established weight of the group in the corresponding period.
The typical value of the emergency group calling times and the typical value of the non-emergency group calling times are obtained in a preset period corresponding to each time period aiming at a group, and when the MBMS bearing pre-established weight of the group is determined in a time period aiming at the group, the typical value of the emergency group calling times and the typical value of the non-emergency group calling times obtained in the corresponding time period are used.
Specific calculation procedures are given below to describe in more detail how to determine the MBMS bearer pre-established weights of a group at different time periods:
Weight＝a×Priority+b×MbmsEfficiency+c×BHCA_urgent+(1-c)×BHCA_no rmal；
wherein:
the Priority is the group Priority, the group with large value has high Priority, and the system is configurable;
a is a weight factor for pre-establishing the priority of the corresponding group of the MBMS bearer, the value is a number between [0,1], and the system can be configured;
the MbmsEffeiciency is the expected MBMS bearing efficiency of the group in the MBSFN service area;
b is a weight factor of the expected MBMS bearing efficiency corresponding to the pre-established MBMS bearing, the value is a number between [0,1], and the system can be configured;
BHCA _ urgent is a typical value of the time-interval emergency group calling times, and the initial value is 0;
BHCA _ normal is a typical value of the time-interval non-urgent group call times, and the initial value is 0.
c is a weight factor for pre-establishing the typical value of the emergency group calling times of the corresponding time period carried by the MBMS, the value is a number between [0 and 1], and the system can be configured;
1-c is a weight factor for pre-establishing a typical value of the non-emergency group calling times of the corresponding time interval of the MBMS bearer, and the value is a number between [0 and 1 ]; in particular implementations, a value for c is typically set to be greater than a value of 1-c;
when N time periods are divided, an MBMS bearer pre-establishment weight value is determined for each time period for the group, i.e., N MBMS bearer pre-establishment weights are obtained for each group.
When the MBMS load pre-establishment needs to be carried out for the group in each time period, determining the time for establishing the MBMS load pre-establishment weight of the group or the MBMS load pre-establishment weight can not be established due to insufficient resources.
When the method is concretely realized, a group queue to be subjected to MBMS bearing pre-establishment can be established, the groups are arranged from large to small according to the MBMS bearing pre-establishment weight of each group, and when the MBMS bearing pre-establishment is carried out for each group, the MBMS bearing pre-establishment is carried out for the group with the large MBMS bearing pre-establishment weight preferentially; after the establishment is finished, the group is moved to a group queue which is subjected to MBMS bearing pre-establishment until all groups are subjected to MBMS bearing pre-establishment or no resource is used for carrying out MBMS bearing pre-establishment for the group with small MBMS bearing pre-establishment weight.
In specific implementation, the server allocates duration of pre-established MBMS bearer for each period. The duration of the pre-established MBMS bearer may be greater than the duration of the time period, or may not be greater than the duration of the time period.
When the configured pre-established MBMS bearer pre-persistence duration is not greater than the duration of the time period, according to the technical scheme provided in the first embodiment, the MBMS bearer pre-establishment is preferentially performed for the group with the large MBMS bearer pre-establishment weight until all the groups are subjected to the MBMS bearer pre-establishment, or no resource is already available for the group with the small MBMS bearer pre-establishment weight to perform the MBMS bearer pre-establishment;
when the configured pre-established MBMS bearer pre-duration is longer than the duration of a time period, if no available MBMS bearer pre-established resource exists, the group with the high MBMS bearer pre-established weight can preempt the MBMS bearer pre-established resource of the group with the low MBMS bearer pre-established weight so as to perform MBMS bearer pre-establishment.
The following describes in detail how to perform a procedure of preempting the MBMS bearer pre-establishment resource of the group with a small MBMS bearer pre-establishment weight when the configured duration of the pre-established MBMS bearer is longer than the duration of the time period through the second embodiment and the third embodiment.
During specific implementation, the default configuration can be provided with the capability of preempting and seizing the MBMS bearer pre-established resources; or which group has the preemption capability and which group has the preempted capability can be configured according to specific application; in the embodiments given below, the group has the capability of preempting and preempting the MBMS bearer pre-established resource as an example.
Example two
Referring to fig. 2, fig. 2 is a schematic diagram of a flow of preempting a pre-established resource of an MBMS bearer in a second embodiment of the present application. The method comprises the following specific steps:
Step 204, the server determines whether there is a group with a weight smaller than the MBMS bearer pre-establishment weight of the group currently required to be subjected to MBMS bearer pre-establishment, if yes, step 205 is executed; otherwise, step 207 is performed.
When the group of the preempted MBMS bearer pre-established resources is determined, the MBMS bearer pre-established resources of the determined group are released firstly, and then the corresponding MBMS bearer pre-established resources are distributed to the preempted group to perform MBMS bearer pre-establishment.
In the specific implementation of the present application, the MBMS bearer pre-established weights of two groups are compared, and what is compared is the MBMS bearer pre-established weights of the two groups for the group at the same time period.
In step 206, the server performs MBMS bearer pre-establishment for the group currently in need of MBMS bearer pre-establishment. The flow is ended.
In step 207, waiting is performed, after the group with the heavy MBMS bearer pre-establishment weight releases the MBMS bearer pre-establishment resource, the MBMS bearer pre-establishment is performed for the group.
The present embodiment provides a method for implementing preemption of MBMS bearer pre-established resources when the MBMS bearer pre-established resources are in shortage, and supports a large-weight group to preempt resources of a small-weight group, thereby avoiding waste of MBMS bearer pre-established resources, improving the utilization efficiency of system resources, and improving system performance.
EXAMPLE III
The third embodiment provides a specific implementation process that the server preempts the MBMS bearer pre-establishment resource of the group with the small MBMS bearer pre-establishment weight and performs MBMS bearer pre-establishment for the group which needs MBMS bearer pre-establishment currently.
Referring to fig. 3, fig. 3 is a schematic diagram of a flow of preempting a pre-established resource of an MBMS bearer in a third embodiment of the present application. The method comprises the following specific steps:
When selecting the group which needs to preempt the resource, if the bandwidth of the group with the minimum MBMS bearer pre-establishment weight in the set can not meet the group which needs to be subjected to MBMS bearer pre-establishment, selecting the group with the minimum MBMS bearer pre-establishment weight, summing the bandwidths of the minimum group and the second-smallest group, determining whether the bandwidth needs of the group which needs to be subjected to MBMS bearer pre-establishment currently are met, and so on, until the bandwidth needs of the group which needs to be subjected to MBMS bearer pre-establishment currently are determined to be met, or the bandwidth needs of the group which needs to be subjected to MBMS bearer pre-establishment currently are determined to be not met, not performing MBMS bearer pre-establishment for the group which needs to be subjected to.
The present embodiment provides a method for implementing preemption of MBMS bearer pre-established resources when the MBMS bearer pre-established resources are in shortage, which supports a large-weight group to preempt resources of a small-weight group, and the given resource preemption manner can prioritize MBMS bearer pre-establishment for a group with a large MBMS bearer pre-established weight as far as possible, and minimizes the resource preemption times, thereby avoiding waste of MBMS bearer pre-established resources and improving the utilization efficiency of system resources.
Example four
A specific example is given in the present application to describe in detail the procedure of preempting the MBMS bearer pre-established bearer resource.
Assuming that the time interval 1 and the time interval 2 are adjacent and the duration is one hour, the duration of the MBMS bearer pre-establishment allocated for each time interval is 1.5 hours.
There are 4 groups, group 1, group 2, group 3 and group 4 respectively, group 1 is for the MBMS bearing that the interval of time 1 confirms to build the weight value in advance and be 4, for the MBMS bearing that the interval of time 2 confirms to build the weight value in advance and be 3; the group 2 determines that the MBMS bearer pre-establishment weight value for the time period 1 is 2, and the MBMS bearer pre-establishment weight value for the time period 2 is 4; the group 3 determines that the MBMS bearer pre-establishment weight value for the time period 1 is 1, and the MBMS bearer pre-establishment weight value for the time period 2 is 2; the group 4 determines that the MBMS bearer pre-establishment weight value for the time period 1 is 3, and the MBMS bearer pre-establishment weight value for the time period 2 is 1.
Aiming at the time interval 1, 4 groups are arranged into a group 1, a group 4, a group 2 and a group 3 from large to small according to the weight;
for period 2, 4 groups are arranged from large to small according to the weight as group 2, group 1, group 3 and group 4.
And aiming at the time interval 1, preferentially performing MBMS bearer pre-establishment on the group with large weight, and sequentially performing MBMS bearer pre-establishment on the group 1, the group 4, the group 2 and the group 3, wherein if the MBMS bearer pre-establishment resources are only enough for performing MBMS bearer pre-establishment on the 2 groups, and the group with the weight smaller than that of the MBMS bearer pre-establishment of the group 2 does not already perform MBMS bearer pre-establishment, namely the resource capable of being preempted does not exist, the MBMS bearer pre-establishment cannot be performed on the group 2 and the group 3.
By time period 2, MBMS bearer pre-establishment is performed for the group, assuming that group 1 has released MBMS bearer pre-establishment bearer resources for some reason.
For the period 2, if the group with the largest MBMS bearer pre-establishment weight is the group 2, the MBMS bearer pre-establishment is performed for the group 2 (if the resources are satisfied).
Then carrying out MBMS bearing pre-establishment for the group 1, but at the moment, bearing resources for carrying out MBMS bearing pre-establishment for the group do not exist, determining a group with weight smaller than that of the MBMS bearing pre-establishment of the group 1, namely the group 4, in the groups (the group 2 and the group 4) which carry out MBMS bearing pre-establishment, and determining that the resources of the group 4 can meet the requirement of the group 1, namely determining to preempt the MBMS bearing pre-establishment bearing resources of the group 4; otherwise, MBMS bearer pre-establishment is not performed for group 1.
If the MBMS bearer pre-establishment is performed for the group 1, the MBMS bearer pre-establishment is performed for the group 3 at last, but at this time, there is no bearer resource for the group to perform the MBMS bearer pre-establishment, and there is no group with a smaller weight than the MBMS bearer pre-establishment weight of the group 3 in the group to perform the MBMS bearer pre-establishment, the MBMS bearer pre-establishment is not performed for the group 3, and naturally, the MBMS bearer pre-establishment is not performed for the group 4 with the smaller weight than the MBMS bearer pre-establishment weight.
In all embodiments of the present application, when the determined MBMS bearer pre-establishment weights are the same, a priority may be randomly selected for MBMS bearer pre-establishment, or a priority may be selected for MBMS bearer pre-establishment according to a certain rule, for example, a group with a high group priority or a group with a large typical value of the number of emergency group calls is selected.
Several implementations are presented herein, and specific implementations are not limited to these several implementations.
Based on the same inventive concept, the application also provides a device for pre-establishing the MBMS bearer. Referring to fig. 4, fig. 4 is a schematic structural diagram of an apparatus applied to the above technology in the embodiment of the present application. The device includes:
a counting unit 401, a first determining unit 402, a second determining unit 403 and a establishing unit 404;
a counting unit 401, configured to count the emergency group call times and non-emergency group call times of each group in each time period in a preset period;
a first determining unit 402, configured to determine typical values of the emergency group call times and the non-emergency group call times, which are obtained by the counting unit 401 of each group at each time interval;
a second determining unit 403, configured to determine a pre-established weight for MBMS bearer in a group at a corresponding time period according to the group priority, the expected MBMS bearer efficiency of the group in the MBSFN service area, and typical values of the emergency group call times and the non-emergency group call times corresponding to each time period determined by the first determining unit 402;
the establishing unit 404 preferentially allocates MBMS bearer pre-established bearer resources to the group with the larger MBMS bearer pre-established weight determined by the second determining unit 403 for each group of each time period, and performs MBMS bearer pre-establishment.
Preferably, the apparatus further comprises: a configuration unit 405;
a configuring unit 405, configured to configure a corresponding MBMS bearer pre-established weight factor for the group priority; configuring corresponding MBMS bearing pre-established weight factors aiming at the expected MBMS bearing efficiency of a group in an MBSFN service area; configuring corresponding MBMS load pre-establishing weight factors aiming at the typical value of the emergency group calling times and the typical value of the non-emergency group calling times; the sum of the MBMS load pre-established weight factor corresponding to the typical value of the emergency group calling times and the MBMS load pre-established weight factor corresponding to the typical value of the non-emergency group calling times is 1;
the second determining unit 403 is specifically configured to, according to the group priority, the expected MBMS bearer efficiency of the group in the MBSFN service area, and the determined typical values of the emergency group call times and the non-emergency group call times corresponding to each time period, determine that the MBMS bearer pre-established weights of the group in the corresponding time period, for any time period, use the corresponding MBMS bearer pre-established weight factors configured by the configuration unit 405 to weight and sum the group priority, the expected MBMS bearer efficiency of the group in the MBSFN service area, the typical values of the emergency group call times, and the typical values of the non-emergency group call times, so as to obtain the MBMS bearer pre-established weights of the group in the corresponding time period.
Preferably, the first and second liquid crystal films are made of a polymer,
a counting unit 401, configured to obtain group call information data in each time period in a preset cycle when counting the emergency group call times and non-emergency group call times of each group in each time period in the preset cycle; counting the emergency group calling times and non-emergency group calling times of each group in a preset period aiming at any time interval;
the first determining unit 402 is specifically configured to determine typical values of the emergency group call times and the non-emergency group call times for each group in each time period according to a preset rule when determining the typical values of the emergency group call times and the non-emergency group call times in each time period.
Preferably, the expected MBMS bearer efficiency of the group in the MBSFN service area is a ratio of the number of group member users of the group in the MBSFN service area to an MBMS bearer bandwidth corresponding to the group session media data transmission.
Preferably, the configuring unit 405 is further configured to allocate a duration of the pre-established MBMS bearer for each time period.
Preferably, the first and second liquid crystal films are made of a polymer,
a second determining unit 403, configured to, when the duration of the pre-established MBMS bearer configured by the configuring unit 405 for any time period is longer than the duration of the time period, perform MBMS bearer pre-establishment for any group, if it is determined that there is no available MBMS bearer pre-established bearer resource, determine whether a group for which MBMS bearer pre-establishment has been performed exists, and if so, further determine whether a group with a weight smaller than that of the group MBMS bearer pre-establishment currently required to perform MBMS bearer pre-establishment exists;
an establishing unit 404, configured to preempt MBMS bearer pre-established bearer resources of the group with the small MBMS bearer pre-established weight when the second determining unit 403 determines that the group with the MBMS bearer pre-established already exists and the group with the smaller MBMS bearer pre-established weight than the group currently required to be subjected to MBMS bearer pre-established exists, and perform MBMS bearer pre-establishment on the group currently required to be subjected to MBMS bearer pre-established; otherwise, not performing MBMS bearer pre-establishment for the group which needs MBMS bearer pre-establishment currently.
Preferably, the first and second liquid crystal films are made of a polymer,
when the sizes of the MBMS bearer pre-establishment weights of the two groups are compared, the sizes of the MBMS bearer pre-establishment weights of the two groups aiming at the group in the same time period are compared.
Preferably, the preempting the MBMS bearer pre-established bearer resource of the group with the small MBMS bearer pre-established weight includes:
determining a set of groups which are subjected to MBMS bearer pre-establishment and have MBMS bearer pre-establishment weights smaller than the current MBMS bearer pre-establishment weights;
sequentially selecting from the group with the minimum MBMS bearer pre-established weight to the group with the maximum MBMS bearer pre-established weight in the set until the bandwidth of each selected group and the bandwidth of the group which meets the current requirement of MBMS bearer pre-established weight;
and carrying out MBMS bearing pre-establishment resource preemption on the selected group, and carrying out MBMS bearing pre-establishment.
Preferably
And when the sum of the bandwidths of all the groups in the set can not meet the requirement of the group which needs to be subjected to MBMS bearing pre-establishment currently, not performing MBMS bearing pre-establishment for the group which needs to be subjected to MBMS bearing pre-establishment currently.
The units of the above embodiments may be integrated into one body, or may be separately deployed; may be combined into one unit or further divided into a plurality of sub-units.
In summary, the present application provides a method for implementing MBMS bearer pre-establishment for which group at what time and according to what rule. The cluster server analyzes and evaluates the weight of MBMS bearing pre-establishment of each group according to the group priority, the group member position information, the expected MBMS bearing efficiency and the typical value of the time-interval group calling times, and carries out MBMS bearing pre-establishment for the high-weight group preferentially. The trunking communication system balances the weight strategies under different application scenes by flexibly configuring a group priority weight factor, an expected MBMS bearing efficiency weight factor, an emergency group call and a non-emergency group call frequency typical value weight factor corresponding to MBMS bearing pre-establishment, preferentially meets the downlink media data transmission requirements of a group with high priority, high expected MBMS bearing efficiency and large traffic volume, and improves the use efficiency of MBMS bearing resources.
When the MBMS bearer resources are in shortage, the group with high MBMS bearer pre-established weight can preempt the MBMS bearer resources of the group with low weight, and the downlink media data transmission needs of the group with high priority, high expected MBMS bearer efficiency and large traffic are met preferentially, so that the use efficiency of the MBMS bearer resources is improved, and the system performance is improved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (9)
1. A method for pre-establishing MBMS bearing of Multimedia Broadcast Multicast Service (MBMS) is characterized in that the method comprises the following steps:
counting the emergency group calling times and the non-emergency group calling times of each group in each period in a preset period, and determining the typical values of the emergency group calling times and the non-emergency group calling times of each group in each period;
determining MBMS bearing pre-established weight of the group in the corresponding time period according to the group priority, the expected MBMS bearing efficiency of the group in the multicast single frequency network MBSFN service area, and the determined typical values of the emergency group calling times and the non-emergency group calling times corresponding to each time period;
preferentially distributing MBMS bearing pre-established resources to the groups with the high MBMS bearing pre-established weight aiming at each group of each time period, and performing MBMS bearing pre-establishment;
the expected MBMS bearing efficiency of the group in the MBSFN service area is the ratio of the number of group member users of the group in the MBMSF server to the MBMS bearing bandwidth corresponding to the group session media data transmission.
2. The method of claim 1, wherein the determining the MBMS bearer pre-established weights for the group at the corresponding time period according to the group priority, the expected MBMS bearer efficiency of the group in the MBSFN service area, and the determined typical values of the emergency group call times and the non-emergency group call times corresponding to each time period comprises:
configuring corresponding MBMS load pre-establishing weight factors aiming at the group priority; configuring corresponding MBMS bearing pre-established weight factors aiming at the expected MBMS bearing efficiency of a group in an MBSFN service area; configuring corresponding MBMS load pre-establishing weight factors aiming at the typical value of the emergency group calling times and the typical value of the non-emergency group calling times; the sum of the MBMS load pre-established weight factor corresponding to the typical value of the emergency group calling times and the MBMS load pre-established weight factor corresponding to the typical value of the non-emergency group calling times is 1;
and aiming at any period, respectively weighting the group priority, the expected MBMS bearing efficiency of the group in the MBSFN service area, the typical value of the emergency group calling times and the typical value of the non-emergency group calling times by using a corresponding MBMS bearing pre-established weight factor, and summing to obtain the MBMS bearing pre-established weight of the group in the corresponding period.
3. The method of claim 1, wherein the counting the emergency group call times and the non-emergency group call times of each group in each time period within a preset period, and determining typical values of the emergency group call times and the non-emergency group call times in each time period comprises:
acquiring group calling information data in each time period in a preset period;
counting the emergency group calling times and non-emergency group calling times of each group in a preset period aiming at any time interval;
and determining typical values of the emergency group calling times and the non-emergency group calling times of each group in each period according to a preset rule.
4. The method according to any one of claims 1-3, characterized in that the method further comprises: and allocating the duration of the pre-established MBMS bearer for each time period.
5. The method of claim 4, wherein when the duration of the pre-established MBMS bearer configured for any period is longer than the duration of the period, the method further comprises: step (ii) of
A. When MBMS load bearing pre-establishment is carried out aiming at any group, if it is determined that no available MBMS load bearing pre-establishment load bearing resource exists, determining whether a group which is carried out MBMS load bearing pre-establishment exists, if so, executing the step B; otherwise, executing step D;
B. determining whether a group with MBMS bearer pre-establishment weight smaller than that of the group needing MBMS bearer pre-establishment currently exists, and if so, executing the step C; otherwise, executing step D;
C. preempting the MBMS bearer pre-established bearer resource of the group with the small MBMS bearer pre-established weight, performing MBMS bearer pre-establishment for the group which needs MBMS bearer pre-establishment currently, and ending the flow;
and D, not carrying out MBMS bearing pre-establishment for the group which needs MBMS bearing pre-establishment currently.
6. The method of claim 5,
when the sizes of the MBMS bearer pre-establishment weights of the two groups are compared, the sizes of the MBMS bearer pre-establishment weights of the two groups aiming at the group in the same time period are compared.
7. The method of claim 5, wherein the preempting the MBMS bearer pre-established bearer resource of the group with the low MBMS bearer pre-established weight comprises:
determining a set of groups which are subjected to MBMS bearer pre-establishment and have MBMS bearer pre-establishment weights smaller than the current MBMS bearer pre-establishment weights;
sequentially selecting from the group with the minimum MBMS bearer pre-established weight to the group with the maximum MBMS bearer pre-established weight in the set until the bandwidth of each selected group and the bandwidth of the group which meets the current requirement of establishing the MBMS bearer;
and carrying out MBMS bearing pre-establishment resource preemption on the selected group, and carrying out MBMS bearing pre-establishment.
8. The method of claim 7, further comprising:
and when the sum of the bandwidths of all the groups in the set can not meet the requirement of the group which needs to be subjected to MBMS bearing pre-establishment currently, not performing MBMS bearing pre-establishment for the group which needs to be subjected to MBMS bearing pre-establishment currently.
9. A Multimedia Broadcast Multicast Service (MBMS) bearer pre-establishment device is characterized by comprising the following components: the device comprises a statistical unit, a first determining unit, a second determining unit and an establishing unit;
the statistical unit is used for counting the emergency group calling times and the non-emergency group calling times of each group in each period in a preset period;
the first determining unit is used for determining the typical values of the emergency group calling times and the non-emergency group calling times which are obtained by the counting unit of each group in each period;
the second determining unit is used for determining MBMS bearing pre-established weight of the group in the corresponding time period according to the group priority, the expected MBMS bearing efficiency of the group in the multicast single frequency network MBSFN service area, and the typical values of the emergency group call times and the non-emergency group call times corresponding to each time period determined by the first determining unit; the expected MBMS bearing efficiency of the group in the MBSFN service area is the ratio of the number of group member users of the group in an MBMSF server to the MBMS bearing bandwidth corresponding to the group session media data transmission;
the establishing unit preferentially allocates MBMS bearing pre-established bearing resources to the group with the larger MBMS bearing pre-established weight determined by the second determining unit aiming at each group of each time period, and performs MBMS bearing pre-establishment.
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| CN110621084B (en) * | 2018-06-20 | 2021-05-25 | 普天信息技术有限公司 | Method and device for establishing pre-established session, electronic equipment and storage medium |
| CN112995922B (en) * | 2019-12-16 | 2022-04-15 | 成都鼎桥通信技术有限公司 | Group establishing method and device |
| CN114980356A (en) * | 2021-07-01 | 2022-08-30 | 海能达通信股份有限公司 | Method, system and storage medium for pre-establishing special bearing |
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