CN101873527B - Method and device for allocating and delivering MCH (Multi-cast Channel) physical resource - Google Patents
Method and device for allocating and delivering MCH (Multi-cast Channel) physical resource Download PDFInfo
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Abstract
The invention provides method and device for allocating and delivering an MCH (Multi-cast Channel) physical resource. The method comprises the following steps of: determining the allocation of an MCH physical resource occupied by an MBMS (Multimedia Broadcast Multicast Service) by an MCE (MBMS Coordination Entity), wherein the MCH physical resource comprises an MCH frequency domain resource and an MCH time domain resource; and sending MCH physical resource allocation information indicating the MCH physical resource allocation to an eNB (evolved base station) through an M2 interface, wherein the MCE sends the MCH time domain resource allocation information which indicates the MCH time domain resource allocation and comprises radio frame circulation period information, radio frame bias information and sub-frame allocation information to the eNB through the M2 interface. The method and the device provide a specific resource allocation and delivery technical scheme of the MCH physical resource and perfect the operation mechanism of (multicast Broadcast Single frequency Network).
Description
Technical field
Relate generally to communication technical field of the present invention relates in particular to configuration and the transmission of the physical resource of Multicast Channel.
Background technology
MBMS (Multimedia Broadcast/Multicast Service, multimedia broadcast-multicast service) is used to that the user provides multimedia broadcasting and multicast services in the wireless area.In LTE (Long TermEvolution, the Long Term Evolution) system, the frequency layer of MBMS special use and with the professional frequency layer of sharing of non-MBMS on MBMS can both be provided.Support that the LTE residential quarter of MBMS can be that the MBMS dedicated cell also can be MBMS/ clean culture mixed cell.The MBMS business can be carried out single cell transmission, also can carry out many cell transmission.
MBMS dedicated frequency layer refers to be specifically designed to the frequency layer of MBMS transmission.When a residential quarter is configured to MBMS dedicated frequency layer, claim that this residential quarter is the MBMS dedicated cell; Being configured to when a residential quarter is not when being specifically designed to the frequency layer of MBMS transmission, to claim that this residential quarter is MBMS/ clean culture mixed cell.Clean culture and MBMS business in the MBMS/ clean culture mixed cell are carried out cooperative transmission, and some is used for the professional transmission of MBMS constantly, and other the moment is used for the unicast service transmission.Single cell transmission of MBMS refers to that MBMS only transmits in the coverage of a designated cell, do not support the combination from the MBMS transmission of many residential quarters; Many cell transmission of MBMS need to be supported the MBSFN transmission means.
So-called MBSFN (Multicast Broadcast Single Frequency Network, multicast single-frequency network) refers to carry out synchronous transmission with same frequency in a plurality of residential quarters at one time.Use this transmission means can save frequency resource, improve the availability of frequency spectrum.It requires a plurality of residential quarters identical content is sent simultaneously.So, UE (User Equipment, subscriber equipment) receiver just can be considered as a plurality of MBSFN residential quarter a large residential quarter.Therefore, UE not only can not be subject to the presence of intercell interference of neighbor cell transmission, and will benefit from the stack from the signal of a plurality of MBSFN residential quarter.MBMS dedicated cell and MBMS/ clean culture mixed cell can adopt the MBSFN transmission means.In addition, if the time difference problem of utilizing advanced UE receiver technology can also solving multipath to propagate, thus interference in the residential quarter eliminated.This multiple sectors at same keeps pouring in the defeated diversity that brings can also solve the problems such as blind area covering, strengthens the reliability that receives, and improves coverage rate.
The technical characterstic of the many cell transmission of MBMS is as follows:
(1) synchronous transmission of MBMS in the MBSFN territory;
(2) support the merging that many cell MBMSs transmit;
(3) MTCH (MBMS point-to-multipoint Traffic Channel, MBMS point-to-multipoint service channel) and MCCH (MBMS point-to-multipoint Control Channel, the point-to-multipoint control channel of MBMS) channel mapping is being used for PTM (Point-to-Multipoint, point-to-multipoint) transmission MCH (Multicast Channel, Multicast Channel) physical channel on;
(4) the MBSFN retaining zone can semi-staticly dispose, as: pass through O﹠amp; M (Operations﹠amp; Maintenance, operation and maintenance).
(5) professional scheduling process is implemented by MCE (MBMS Coordination Entity, MBMS coordination entity);
For many cell transmission of MBMS, a carrier frequency can be supported a plurality of MCH.By specifying the pattern of a subframe to finish for MCH, and relevant sub-frame in time need not be adjacent to the distribution of MCH physical resource.This pattern is called MCH sub-frame allocation pattern (MCH SubframeAllocation Pattern, MSAP).By the MSAP that MCCH notifies each to carry the MCH of MTCH, be mapped with on the MCH of a plurality of MTCH, the order of transmission of each MTCH is also notified by MCCH.A MCH only comprises the data that belong to a MBSFN zone, but each MCH can shine upon a plurality of MBMS business.
As shown in the above, carrying out many cell transmission content synchronization mechanism in the LTE system should be based on following step:
(1) all eNB (Evolved NodeB, evolution base station) in the given MBSFN retaining zone have obtained the synchronous radio frame regularly, so that radio frames can send simultaneously;
(2) all eNB are for the identical RLC of same MBMS service implementation (Radio Link Control, Radio Link control)/MAC (Media Access Control, media interviews control)/PHY (physical layer) configuration, and configuration parameter is by MCE entity prior notice;
(3) EMBMS GW (Evolved Multimedia Broadcast/Multicast ServiceGateWay, evolutionary multimedia broadcast multicast business gateway) broadcasting is grouped into the eNB that each sends business with the MBMS of SYNC synchronous protocol;
(4) eNB sends the MBMS data according to the transmission time of SYNC agreement appointment in the resource of the appointment of eating dishes without rice or wine;
At present, also there is not MCE to pass through the M2 interface with the mechanism of each eNodeB in the information such as the physical resource notice SFN retaining zone.
Because the content about MBSFN in the standard of LTE system is not yet perfect, although current standard has provided the MBSFN subframe in the method for salary distribution of eating dishes without rice or wine, also lacks and how by the M2 interface MCH to be carried out the method that resource is distributed and transmitted.
Summary of the invention
In order one of to address the above problem, the present invention proposes a kind of distribution and transmission method of Multicast Channel MCH physical resource, may further comprise the steps: the multimedia broadcast-multicast service coordination entity MCE is determined the configuration of the described MCH physical resource that it is shared for multimedia broadcast-multicast service MBMS according to system bandwidth, wherein, described MCH physical resource comprises MCH frequency domain resource and MCH time-domain resource; Described MCE will indicate the MCH physical resource configuration information of described MCH physical resource configuration to send to evolution base station eNB by the M2 interface, comprising: described MCE will indicate the MCH time-domain resource configuration information that comprises radio frames cycle period information, radio frames offset information and subframe configuration information of described MCH time-domain resource configuration to send to described eNB by described M2 interface.
According to embodiments of the invention, described MCE sends to described eNB by the M2 interface with described MCH physical resource configuration information and also comprises: described MCE sends to described eNB by described M2 interface with Physical Resource Block PRB occupied information, and described PRB occupied information comprises that the PRB in the described system bandwidth of indication takies the bit stream of situation.
According to embodiments of the invention, comprise at least the bit information of the situation that takies of each PRB in the described system bandwidth of indication in the bit stream of described PRB occupied information.
According to embodiments of the invention, described MCE determines that according to system bandwidth the professional shared MCH frequency domain resource of described MBMS comprises: described MCE is divided into a plurality of resource groups with described system bandwidth; Described MCE selects the described MBMS of at least one described set of resources dispensing professional.
According to embodiments of the invention, described MCE sends to described eNB by the M2 interface with described MCH physical resource configuration information and also comprises: described MCE sends to described eNB by described M2 interface with resource group occupied information, and described resource group occupied information comprises the bit stream of the situation that takies of indicating described resource group.
According to embodiments of the invention, described MCE determines that according to system bandwidth the professional shared MCH frequency domain resource of described MBMS comprises: described MCE is divided into a plurality of PRB subsets with the described PRB in the described system bandwidth; Described MCE is professional definite its shared described PRB subset of described MBMS, the selected directions of continuous P RB in the described PRB subset, and the take situation of described MBMS business in the described continuous P RB that chooses.
According to embodiments of the invention, described MCE sends to described eNB by the M2 interface with described MCH physical resource configuration information and also comprises: described MCE sends to described eNB by described M2 interface with the subset occupied information, wherein said subset occupied information comprises the bit stream of the PRB subset that the described MBMS business of indication is shared, indication is at the bit stream of the selected directions of continuous P RB described in the described PRB subset, and the bit stream of indicating the take situation of described MBMS business in the described continuous P RB that chooses.
According to embodiments of the invention, described MCE determines that according to system bandwidth the professional shared MCH frequency domain resource of described MBMS comprises: described MCE chooses continuous PRB and distributes to described MBMS business in described system bandwidth.
According to embodiments of the invention, described MCE sends to described eNB by the M2 interface with described MCH physical resource configuration information and also comprises: described MCE indicates numerical value to send to described eNB resource occupation by described M2 interface, and described resource occupation indication numerical value is indicated the original position of described continuous PRB and the quantity of described continuous PRB.
The invention allows for a kind of multimedia broadcast-multicast service coordination entity MCE, comprise: the resource distribution module, it is used for determining the configuration of the described MCH physical resource that it is shared according to system bandwidth for multimedia broadcast-multicast service MBMS that it comprises frequency domain resource configuration submodule and time-domain resource configuration submodule; The configuration information sending module, it is used for will indicating the MCH physical resource configuration information of described MCH physical resource configuration to send to evolution base station eNB by the M2 interface, wherein, described configuration information sending module comprises that the frequency domain resource configuration information sends submodule and the time-domain resource configuration information sends submodule, and described time-domain resource configuration information sends submodule and is used for will indicating the MCH time-domain resource configuration information that comprises radio frames cycle period information, radio frames offset information and subframe configuration information of described MCH time-domain resource configuration to send to described eNB by described M2 interface.
According to embodiments of the invention, described frequency domain resource configuration information sends submodule and comprises that the PRB occupied information sends submodule, it is used for by described M2 interface Physical Resource Block PRB occupied information being sent to described eNB, and described PRB occupied information comprises that the PRB in the described system bandwidth of indication takies the bit stream of situation.
According to embodiments of the invention, comprise at least the bit information of the situation that takies of each PRB in the described system bandwidth of indication in the bit stream of described PRB occupied information.
According to embodiments of the invention, described frequency domain resource configuration submodule comprises the resource group configuration submodule, and it is used for described system bandwidth is divided into a plurality of resource groups, and selects the described MBMS of at least one described set of resources dispensing professional.
According to embodiments of the invention, described frequency domain resource configuration information sends submodule and comprises that resource group occupied information sends submodule, it is used for by described M2 interface resource group occupied information being sent to described eNB, and described resource group occupied information comprises the bit stream of the situation that takies of indicating described resource group.
According to embodiments of the invention, described frequency domain resource configuration submodule comprises PRB subset configuration submodule, it is used for the described PRB of described system bandwidth is divided into a plurality of PRB subsets, and be professional definite its shared described PRB subset of described MBMS, the selected directions of continuous P RB in the described PRB subset, and the take situation of described MBMS business in the described continuous P RB that chooses.
According to embodiments of the invention, described frequency domain resource configuration information sends submodule and comprises that the subset occupied information sends submodule, it is used for by described M2 interface the subset occupied information being sent to described eNB, wherein said subset occupied information comprises the bit stream of the PRB subset that the described MBMS business of indication is shared, indication is at the bit stream of the selected directions of continuous P RB described in the described PRB subset, and the bit stream of indicating the take situation of described MBMS business in the described continuous P RB that chooses.
According to embodiments of the invention, described frequency domain resource configuration submodule comprises continuous P RB configuration submodule, and it is used for choosing continuous PRB in described system bandwidth and distributes to described MBMS business.
According to embodiments of the invention, described frequency domain resource configuration information sends submodule and comprises that resource occupation indication numerical value sends submodule, it is used for indicating numerical value to send to described eNB resource occupation by described M2 interface, and described resource occupation indication numerical value is indicated the original position of described continuous PRB and the quantity of described continuous PRB.
Method of the present invention and device have proposed the technical scheme that the concrete resource of MCH physical resource is distributed and transmitted, the perfect operation mechanism of MBSFN.
Description of drawings
Above-mentioned and/or the additional aspect of the present invention and advantage are from obviously and easily understanding becoming the description of embodiment below in conjunction with accompanying drawing, wherein:
Fig. 1 is the logical architecture schematic diagram of EMBMS;
Fig. 2 is the flow chart of MCH physical source distributing according to an embodiment of the invention and transmission method;
Fig. 3 is the structural representation of MCE according to an embodiment of the invention.
Embodiment
The below describes embodiments of the invention in detail, and the example of described embodiment is shown in the drawings.Be exemplary below by the embodiment that is described with reference to the drawings, only be used for explaining the present invention, and can not be interpreted as limitation of the present invention.
Be illustrated in figure 1 as (the Radio Access Network of RAN in the LTE system, wireless access network) EMBMS of side (Evolved Multimedia Broadcast/Multicast Service, evolutionary multimedia broadcast multicast business) logical architecture schematic diagram, comprising MCE (MBMS Coordination Entity, the MBMS coordination entity), eNB (Evolved NodeB, evolution base station) and MBMS GW (Multimedia Broadcast/Multicast Service GateWay, multimedia broadcast-multicast service gateway).Wherein the interface between MCE and the eNB is the M2 interface.
The purpose of embodiments of the invention is to propose for SFN (Single Frequency Network, single frequency network) each MBMS (Multimedia Broadcast/Multicast Service in the retaining zone, multimedia broadcast-multicast service) resource allocation method, and the MCE entity is notified the resource allocation information of each MBMS business by the signaling plane of M2 interface the technical scheme of each eNodeB.
One embodiment of the present of invention have proposed distribution and the transmission method of a kind of Multicast Channel PMCH (Physical MulticastChannel, Physical Multicast Channel) physical resource, are illustrated in figure 2 as the flow chart of the method 200, may further comprise the steps:
S201:MCE according to system bandwidth for the professional configuration of determining its shared MCH physical resource of MBMS, comprising MCE respectively to the configuration of MCH frequency domain resource and MCH time-domain resource.
S202:MCE will indicate the MCH physical resource configuration information of MCH physical resource configuration to send to eNB by the M2 interface.
Comprising: MCE will indicate the MCH time-domain resource configuration information that comprises radio frames cycle period information and subframe configuration information of MCH time-domain resource configuration to send to eNB by the M2 interface.
Table 1, MBMS Resource Block information table according to an embodiment of the invention
| Information element/group name (IE/Group Name) | Existence (Presence) | Scope (Range) | Information element type and parameter (IE type and reference) |
| ＞PMCH parameter (PMCH Parameters) | |||
| The PRB of＞＞every system bandwidth distributes selection (CHOICE PRB Allocation per System Bandwidth) | M | ||
| ＞＞＞N6 | BIT STRING(SIZE (1..6，...)) | ||
| ＞＞＞N15 | BIT STRING(SIZE (1..15，...)) | ||
| ＞＞＞N25 | BIT STRING(SIZE (1..25，...)) | ||
| ＞＞＞N50 | BIT STRING(SIZE (1..50，...)) | ||
| ＞＞＞N75 | BIT STRING(SIZE (1..75，...)) | ||
| ＞＞＞N100 | BIT STRING(SIZE (1..100，...)) | ||
| ＞＞(radio frames assignment period) Radio Frame Allocation Period | M | ENUMERATED(n1， n2，n4，n8，n16，n32) | |
| ＞＞(radio frames is distributed biasing) Radio Frame Allocation Offset | M | INTEGER(0..7) | |
| ＞＞(radio frames is distributed selection) CHOICE Subframe Allocation | M | ||
| The One Frame of＞＞＞(1 frame) | BIT STRING(SIZE (1..6，...)) | ||
| The Four Frames of＞＞＞(4 frame) | BIT STRING(SIZE (1..24，...)) |
As shown in table 1 is MBMS Resource Block information table according to an embodiment of the invention.In this embodiment, MCE gives a certain MBMS professional according to different regular allocation the PRB in the system bandwidth (Physical Resource Block, Physical Resource Block).MCE sends to eNB by the M2 interface with Physical Resource Block PRB occupied information, and wherein, the PRB occupied information comprises that the PRB in the indication mechanism bandwidth takies the bit stream of situation.
As one embodiment of the present of invention, comprise at least the bit information of the situation that takies of each PRB in the indication mechanism bandwidth in the bit stream of PRB occupied information.For example, adopt the bit stream of different length to indicate the PRB occupation condition for frequency domain resource according to different system bandwidths, as: system bandwidth is N100, namely represent to comprise in this system bandwidth 100 PRB, then the PRB occupied information will use 100 bit streams, wherein the respectively corresponding PRB resource of each bit.For example, value " 1 " shows uses this PRB, and value " 0 " shows not to be used.
In the embodiment shown in the table 1, for time-domain resource, can choose respectively 1,2,4,8,16 or 32 radio frames as cycle period, wherein each radio frames is 10ms.For example, if adopt Four Frames mode, in the time-domain resource configuration information, comprise the information of indication radio frames cycle period, indicate the sub-frame allocation that to carry out continuous 4 radio frames, and distribute biasing (RadioFrame Allocation Offset) as starting point radio frames.As one embodiment of the present of invention, there are 6 subframes to use in each radio frames.Therefore comprise sub-frame allocation information in the time-domain resource configuration information, for example, it can adopt 6 bit streams to indicate respectively the situation that takies of these 6 subframes.For example, value " 1 " shows uses this subframe, and value " 0 " shows not to be used.As one embodiment of the present of invention, for FDD, the subframe that can adopt sequentially is #1, #2, #3, #6, #7, #8; For TDD, the subframe that can adopt sequentially is #3, #4, and #7, #8, #9, last bit does not use.
Table 2, MBMS Resource Block information table according to an embodiment of the invention
| Information element/group name (IE/Group Name) | Existence (Presence) | Scope (Range) | Information element type and parameter (IE type and reference) |
| ＞PMCH parameter (PMCH Parameters) | |||
| ＞＞PRB distributes selection (CHOICE PRB Allocation) | M | ||
| ＞＞＞RAT1 | BIT STRING(SIZE (1..25，...)) | ||
| ＞＞＞RAT2 | BIT STRING(SIZE (1..25，...)) | ||
| ＞＞＞RAT3 | INTEGER(0..5049) | ||
| ＞＞radio frames assignment period (Radio Frame Allocation Period) | M | ENUMERATED(n1， n2，n4，n8，n16，n32) | |
| ＞＞radio frames is distributed biasing (Radio | M | INTEGER(0.7) |
| Information element/group name (IE/Group Name) | Existence (Presence) | Scope (Range) | Information element type and parameter (IE type and reference) |
| Frame Allocation Offset) | |||
| ＞＞sub-frame allocation is selected (CHOICE Subframe Allocation) | M | ||
| The I of＞＞＞frame (One Frame) | BIT STRING(SIZE (1..6，...)) | ||
| ＞＞＞4 frames (Four Frames) | BIT STRING(SIZE (1..24，...)) |
Table 2 is depicted as MBMS Resource Block information table according to another embodiment of the invention.In the embodiment shown in the table 2, adopt respectively three kinds of resources to distribute type for frequency domain resource, comprise RAT1, RAT2 and RAT3.
As one embodiment of the present of invention, for the 1st type of RAT1, as one embodiment of the present of invention, step S201 can comprise: the distribution for frequency domain resource is divided into a plurality of resource groups according to certain rule with bandwidth.For example bandwidth N100 can be divided into 25 resource groups, and each resource group comprises 4 PRB pieces.For example for bandwidth N50, can be divided into 17 resource groups, each resource group comprises 3 PRB pieces, and other is similar.MCE distributes to take such resource group as unit system bandwidth a certain MBMS with frequency domain resource professional.
In this embodiment, step S202 comprises: MCE sends to eNB by the M2 interface with resource group occupied information, and this resource group occupied information comprises the bit stream of the situation that takies of indexed resource group.For example, for the method for salary distribution of two kinds of above-mentioned resource groups, for system bandwidth N100, it is the situation that takies that 25 bit stream shows respectively the resource group that 25 continuous resource groups can be used length; For system bandwidth N50, can use length is 25 bit stream, wherein only has high 17 bits effective, shows respectively the situation that takies of 17 resource groups.
For the 2nd type of RAT2, as one embodiment of the present of invention, step S201 can comprise: the PRB in the system bandwidth is divided into a plurality of PRB subsets; Determine its shared PRB subset, the selected directions of continuous P RB in this PRB subset, and the take situation of this MBMS business in the continuous P RB that chooses for a certain MBMS is professional.Namely, according to certain rule system bandwidth is divided into several subsets, every subset can be selected from the left side or PRB is chosen on the right side.Such as bandwidth N100, can be divided into 4 subsets, can choose from the left side in every subset, also can choose from the right side resource that PRB takies as this MBMS business.
In this embodiment, step S202 can comprise: MCE sends to eNB by the M2 interface with the subset occupied information, wherein the subset occupied information comprises the bit stream of the PRB subset that indication MBMS business is shared, the bit stream of indication selected directions of continuous P RB in the PRB subset, and the bit stream of the take situation of indication MBMS business in the continuous P RB that chooses.
For example, the situation that is divided into 4 subsets for bandwidth N100, the subset occupied information can comprise: 2 bits are indicated the place subset, 1 bit is indicated selected directions, value " 0 " for example, can show from the left side initially, and length is that the data flow of 22 bits is indicated respectively the from left to right situation that takies of 22 PRB of place subset; If opposite selected directions value " 1 " can show from the right side initially, is that the data flow of 22 bits is indicated respectively the from right to left situation that takies of 22 PRB of place subset with length namely.Again for example, can be divided into the situation of 3 subsets for bandwidth N50, the subset occupied information can comprise: 2 bits are indicated the place subset, 1 bit is indicated selected directions, and 14 follow-up bits can be chosen for PRB, and 8 remaining bits do not use, and other bandwidth situation can be similar with it.
For the 3rd type of RAT3, as one embodiment of the present of invention, step S201 can comprise: choose continuous PRB and distribute to a certain MBMS business in system bandwidth.
In this embodiment, step S202 can comprise: MCE indicates numerical value to send to described eNB resource occupation by the M2 interface, the quantity of the original position of the PRB that the indication of resource occupation indication numerical value is continuous and continuous PRB.
As one embodiment of the present of invention, can adopt following formula to obtain resource occupation indication numerical value RIV:
If
Then
Other situation,
Wherein, L
CRBaBe the PRB quantity that this MBMS business continuity takies, N
RB DLBe the PRB quantity in the system bandwidth, RB
StartShow initial PRB numbering, resource occupation indication numerical value RIV is the integer value between the 0..5049, and it can unique identification L
CRBsAnd RB
StartENB can obtain L with itself and bandwidth modulo operation after receiving this resource occupation indication numerical value RIV
CRBs, and remainder is RB
StartShow initial PRB numbering.
As one embodiment of the present of invention, for above-mentioned three kinds of frequency domain resource distribution methods, RAT1, RAT2 and RAT3, time-domain resource can adopt aforesaid method.
Table 3, MBMS Resource Block information table according to still another embodiment of the invention
| Information element/group name (IE/Group Name) | Existence (Presence) | Scope (Range) | Information element type and parameter (IE type and reference) |
| ＞PMCH parameter (PMCH Parameters) | |||
| The PRB of＞＞every system bandwidth distributes selection (CHOICE PRB Allocation per System Bandwidth) | M | ||
| ＞＞＞N6 | |||
| ＞＞＞＞RAT1 | BIT STRING(SIZE (1..6，...)) | ||
| ＞＞＞＞RAT2 | BIT STRING(SIZE (1..6，...)) | ||
| ＞＞＞＞RAT3 | INTEGER(0..20) | ||
| ＞＞＞N15 | |||
| ＞＞＞＞RAT1 | BIT STRING(SIZE (1..8，...)) | ||
| ＞＞＞＞RAT2 | BIT STRING(SIZE (1..7，...)) | ||
| ＞＞＞＞RAT3 | INTEGER(0..119) | ||
| ＞＞＞N25 | |||
| ＞＞＞＞RAT1 | BIT STRING(SIZE (1..13，...)) | ||
| ＞＞＞＞RAT2 | BIT STRING(SIZE (1..12，...)) | ||
| ＞＞＞＞RAT3 | INTEGER(0..324) | ||
| ＞＞＞N50 | |||
| ＞＞＞＞RAT1 | BIT STRING(SIZE (1..17，...)) | ||
| ＞＞＞＞RAT2 | BIT STRING(SIZE (1..17，...)) | ||
| ＞＞＞＞RAT3 | INTEGER(0..1274) | ||
| ＞＞＞N75 | |||
| ＞＞＞＞RAT1 | BIT STRING(SIZE (1..19，...)) | ||
| ＞＞＞＞RAT2 | BIT STRING(SIZE (1..18，...)) | ||
| ＞＞＞＞RAT3 | INTEGER(0..2849) | ||
| ＞＞＞N100 |
| Information element/group name (IE/Group Name) | Existence (Presence) | Scope (Range) | Information element type and parameter (IE type and reference) |
| ＞＞＞＞RAT1 | BIT STRING(SIZE (1..25，...)) | ||
| ＞＞＞＞RAT2 | BIT STRING(SIZE (1..25，...)) | ||
| ＞＞＞＞RAT3 | INTEGER(0..5049) | ||
| ＞radio frames assignment period (Radio Frame Allocation Period) | M | ENUMERATED(n1， n2，n4，n8，n16，n32) | |
| ＞radio frames is distributed biasing (Radio Frame Allocation Offset) | M | INTEGER(0..7) | |
| ＞sub-frame allocation is selected (CHOICE Subframe Allocation) | M | ||
| ＞＞1 frame (One Frame) | BIT STRING(SIZE (1..6，...)) | ||
| ＞＞4 frames (FourFrames) | BIT STRING(SIZE (1..24，...)) |
Table 3 is depicted as MBMS Resource Block information table according to still another embodiment of the invention.In the embodiment shown in the table 3, in conjunction with the method in above-described embodiment, for frequency domain resource respectively according to different bandwidth, such as N6, N50, N100 etc., adopt three kinds of resources in above-described embodiment to distribute type, RAT1, RAT2, RAT3 carry out the resource of PRB and distribute.Can effectively save transmission bandwidth like this.
Of the present inventionly propose a kind of MCE, be illustrated in figure 3 as the structural representation of MCE according to an embodiment of the invention.As shown in Figure 3, this MCE comprises:
Configuration information sending module 302, it is used for will indicating the MCH physical resource configuration information of MCH physical resource configuration to send to eNB by the M2 interface.
Wherein, configuration information sending module 302 comprises that the frequency domain resource configuration information sends submodule 3021 and the time-domain resource configuration information sends submodule 3022.Wherein, the time-domain resource configuration information sends submodule 3022 and sends to eNB for the MCH time-domain resource configuration information that comprises radio frames cycle period information, radio frames offset information and subframe configuration information that will indicate the configuration of MCH time-domain resource by the M2 interface.
As one embodiment of the present of invention, time-domain resource configuration submodule 3012 can be chosen respectively 1,2,4,8,16 or 32 radio frames as cycle period, and wherein each radio frames is 10ms.For example, if adopt Four Frames mode, the information that in the time-domain resource configuration information that time-domain resource configuration information transmission submodule 3022 sends, comprises indication radio frames cycle period, indicate the sub-frame allocation that to carry out continuous 4 radio frames, and distribute biasing (Radio Frame AllocationOffset) as starting point radio frames.As one embodiment of the present of invention, there are 6 subframes to use in each radio frames.Therefore comprise sub-frame allocation information in the time-domain resource configuration information, for example, it can adopt 6 bit streams to indicate respectively the situation that takies of these 6 subframes.For example, value " 1 " shows uses this subframe, and value " 0 " shows not to be used.As one embodiment of the present of invention, for FDD, the subframe that can adopt sequentially is #1, #2, #3, #6, #7, #8; For TDD, the subframe that can adopt sequentially is #3, #4, and #7, #8, #9, last bit does not use.
As one embodiment of the present of invention, the frequency domain resource configuration information sends submodule 3021 and comprises that the PRB occupied information sends submodule, it is used for by the M2 interface PRB occupied information being sent to eNB, and the PRB occupied information comprises that the PRB in the indication mechanism bandwidth takies the bit stream of situation.
As one embodiment of the present of invention, comprise at least the bit information of the situation that takies of each PRB in the indication mechanism bandwidth in the bit stream of above-mentioned PRB occupied information.For example, adopt the bit stream of different length to indicate the PRB occupation condition for frequency domain resource according to different system bandwidths, as: system bandwidth is N100, namely represent to comprise in this system bandwidth 100 PRB, then the PRB occupied information will use 100 bit streams, wherein the respectively corresponding PRB resource of each bit.For example, value " 1 " shows uses this PRB, and value " 0 " shows not to be used.
As one embodiment of the present of invention, frequency domain resource configuration submodule 3011 comprises the resource group configuration submodule, and it is used for system bandwidth is divided into a plurality of resource groups, and selects this MBMS of at least one set of resources dispensing professional.For example for system bandwidth N100, can be divided into 25 resource groups, each resource group comprises 4 PRB pieces.For example for bandwidth N50, can be divided into 17 resource groups, each resource group comprises 3 PRB pieces, and other is similar.MCE distributes to take such resource group as unit system bandwidth a certain MBMS with frequency domain resource professional.
In the above-described embodiments, the frequency domain resource configuration information sends submodule 3021 and comprises that resource group occupied information sends submodule, it is used for by the M2 interface resource group occupied information being sent to eNB, and resource group occupied information comprises the bit stream of the situation that takies of indexed resource group.For example, for the method for salary distribution of two kinds of above-mentioned resource groups, for system bandwidth N100, it is the situation that takies that 25 bit stream shows respectively the resource group that 25 continuous resource groups can be used length; For system bandwidth N50, can use length is 25 bit stream, wherein only has high 17 bits effective, shows respectively the situation that takies of 17 resource groups.
As one embodiment of the present of invention, frequency domain resource configuration submodule comprises PRB subset configuration submodule, it is used for the PRB of system bandwidth is divided into a plurality of PRB subsets, and be professional definite its shared PRB subset of MBMS, the selected directions of continuous P RB in the PRB subset, and the take situation of MBMS business in the continuous P RB that chooses.Namely, according to certain rule system bandwidth is divided into several subsets, every subset can be selected from the left side or PRB is chosen on the right side.Such as bandwidth N100, can be divided into 4 subsets, can choose from the left side in every subset, also can choose from the right side resource that PRB takies as this MBMS business.
In the above-described embodiments, the frequency domain resource configuration information sends submodule 3021 and comprises that the subset occupied information sends submodule, it is used for by the M2 interface subset occupied information being sent to eNB, wherein the subset occupied information comprises the bit stream of the PRB subset that this MBMS business of indication is shared, the bit stream of indication selected directions of continuous P RB in the PRB subset, and the bit stream of the take situation of indication MBMS business in the continuous P RB that chooses.For example, the situation that is divided into 4 subsets for bandwidth N100, the subset occupied information can comprise: 2 bits are indicated the place subset, 1 bit is indicated selected directions, value " 0 " for example, can show from the left side initially, and length is that the data flow of 22 bits is indicated respectively the from left to right situation that takies of 22 PRB of place subset; If opposite selected directions value " 1 " can show from the right side initially, is that the data flow of 22 bits is indicated respectively the from right to left situation that takies of 22 PRB of place subset with length namely.Again for example, can be divided into the situation of 3 subsets for bandwidth N50, the subset occupied information can comprise: 2 bits are indicated the place subset, 1 bit is indicated selected directions, and 14 follow-up bits can be chosen for PRB, and 8 remaining bits do not use, and other bandwidth situation can be similar with it.
As one embodiment of the present of invention, frequency domain resource configuration submodule 3011 comprises continuous P RB configuration submodule, and it is used for choosing continuous PRB in system bandwidth and distributes to the MBMS business.
In the above-described embodiments, the frequency domain resource configuration information sends submodule 3021 and comprises that resource occupation indication numerical value sends submodule, it is used for indicating numerical value to send to eNB resource occupation by the M2 interface, the quantity of the original position of the PRB that the indication of resource occupation indication numerical value is continuous and continuous PRB.As one embodiment of the present of invention, can adopt following formula to obtain resource occupation indication numerical value RIV:
If
Then
Other situation,
Wherein, L
CRBsBe the PRB quantity that this MBMS business continuity takies, N
RB DLBe the PRB quantity in the system bandwidth, RB
StartShow initial PRB numbering, resource occupation indication numerical value RIV is the integer value between the 0..5049, and it can unique identification L
CRBsAnd RB
StartENB can obtain L with itself and bandwidth modulo operation after receiving this resource occupation indication numerical value RIV
CRBs, and remainder is RB
StartShow initial PRB numbering.
Method of the present invention and device have proposed the technical scheme that the concrete resource of MCH physical resource is distributed and transmitted, the perfect operation mechanism of MBSFN.
Need to prove that included MBMS Resource Block information table in the embodiments of the invention is to have intercepted a part relevant in the information table for ease of description, only is for the example explanation, can not be as the restriction to protection scope of the present invention.
Although illustrated and described embodiments of the invention, for the ordinary skill in the art, be appreciated that without departing from the principles and spirit of the present invention and can carry out multiple variation, modification, replacement and modification to these embodiment that scope of the present invention is by claims and be equal to and limit.
Claims (18)
1. distribution and the transmission method of a Multicast Channel MCH physical resource is characterized in that, may further comprise the steps:
The multimedia broadcast-multicast service coordination entity MCE is determined the configuration of the described MCH physical resource that it is shared according to system bandwidth for multimedia broadcast-multicast service MBMS, and wherein, described MCH physical resource comprises MCH frequency domain resource and MCH time-domain resource;
Described MCE will indicate the MCH physical resource configuration information of described MCH physical resource configuration to send to evolution base station eNB by the M2 interface, comprising: described MCE will indicate the MCH time-domain resource configuration information that comprises radio frames cycle period information, radio frames offset information and subframe configuration information of described MCH time-domain resource configuration to send to described eNB by described M2 interface.
2. the distribution of MCH physical resource according to claim 1 and transmission method is characterized in that, described MCE sends to described eNB by the M2 interface with described MCH physical resource configuration information and also comprises:
Described MCE sends to described eNB by described M2 interface with Physical Resource Block PRB occupied information, and described PRB occupied information comprises that the PRB in the described system bandwidth of indication takies the bit stream of situation.
3. the distribution of MCH physical resource according to claim 2 and transmission method is characterized in that, comprise at least the bit information of the situation that takies of each PRB in the described system bandwidth of indication in the bit stream of described PRB occupied information.
4. the distribution of MCH physical resource according to claim 1 and transmission method is characterized in that, described MCE determines that according to system bandwidth the professional shared MCH frequency domain resource of described MBMS comprises:
Described MCE is divided into a plurality of resource groups with described system bandwidth;
Described MCE selects the described MBMS of at least one described set of resources dispensing professional.
5. the distribution of MCH physical resource according to claim 4 and transmission method is characterized in that, described MCE sends to described eNB by the M2 interface with described MCH physical resource configuration information and also comprises:
Described MCE sends to described eNB by described M2 interface with resource group occupied information, and described resource group occupied information comprises the bit stream of the situation that takies of indicating described resource group.
6. the distribution of MCH physical resource according to claim 1 and transmission method is characterized in that, described MCE determines that according to system bandwidth the professional shared MCH frequency domain resource of described MBMS comprises:
Described MCE is divided into a plurality of PRB subsets with the PRB in the described system bandwidth;
Described MCE is professional definite its shared described PRB subset of described MBMS, the selected directions of continuous P RB in the described PRB subset, and the take situation of described MBMS business in the described continuous P RB that chooses.
7. the distribution of MCH physical resource according to claim 6 and transmission method is characterized in that, described MCE sends to described eNB by the M2 interface with described MCH physical resource configuration information and also comprises:
Described MCE sends to described eNB by described M2 interface with the subset occupied information, wherein said subset occupied information comprises the bit stream of the PRB subset that the described MBMS business of indication is shared, indication is at the bit stream of the selected directions of continuous P RB described in the described PRB subset, and the bit stream of indicating the take situation of described MBMS business in the described continuous P RB that chooses.
8. the distribution of MCH physical resource according to claim 1 and transmission method is characterized in that, described MCE determines that according to system bandwidth the professional shared MCH frequency domain resource of described MBMS comprises:
Described MCE chooses continuous PRB and distributes to described MBMS business in described system bandwidth.
9. the distribution of MCH physical resource according to claim 8 and transmission method is characterized in that, described MCE sends to described eNB by the M2 interface with described MCH physical resource configuration information and also comprises:
Described MCE indicates numerical value to send to described eNB resource occupation by described M2 interface, and described resource occupation indication numerical value is indicated the original position of described continuous PRB and the quantity of described continuous PRB.
10. a multimedia broadcast-multicast service coordination entity MCE is characterized in that, comprising:
The resource distribution module, it is used for determining the configuration of the described MCH physical resource that it is shared according to system bandwidth for multimedia broadcast-multicast service MBMS that it comprises frequency domain resource configuration submodule and time-domain resource configuration submodule;
The configuration information sending module, it is used for will indicating the MCH physical resource configuration information of described MCH physical resource configuration to send to evolution base station eNB by the M2 interface,
Wherein, described configuration information sending module comprises that the frequency domain resource configuration information sends submodule and the time-domain resource configuration information sends submodule, and described time-domain resource configuration information sends submodule and is used for will indicating the MCH time-domain resource configuration information that comprises radio frames cycle period information, radio frames offset information and subframe configuration information of described MCH time-domain resource configuration to send to described eNB by described M2 interface.
11. MCE according to claim 10 is characterized in that,
Described frequency domain resource configuration information sends submodule and comprises that the PRB occupied information sends submodule, it is used for by described M2 interface Physical Resource Block PRB occupied information being sent to described eNB, and described PRB occupied information comprises that the PRB in the described system bandwidth of indication takies the bit stream of situation.
12. MCE according to claim 11 is characterized in that, comprises at least the bit information of the situation that takies of each PRB in the described system bandwidth of indication in the bit stream of described PRB occupied information.
13. MCE according to claim 10, it is characterized in that, described frequency domain resource configuration submodule comprises the resource group configuration submodule, and it is used for described system bandwidth is divided into a plurality of resource groups, and selects the described MBMS of at least one described set of resources dispensing professional.
14. MCE according to claim 13, it is characterized in that, described frequency domain resource configuration information sends submodule and comprises that resource group occupied information sends submodule, it is used for by described M2 interface resource group occupied information being sent to described eNB, and described resource group occupied information comprises the bit stream of the situation that takies of indicating described resource group.
15. MCE according to claim 10, it is characterized in that, described frequency domain resource configuration submodule comprises PRB subset configuration submodule, it is used for the PRB of described system bandwidth is divided into a plurality of PRB subsets, and be professional definite its shared described PRB subset of described MBMS, the selected directions of continuous P RB in the described PRB subset, and the take situation of described MBMS business in the described continuous P RB that chooses.
16. MCE according to claim 15, it is characterized in that, described frequency domain resource configuration information sends submodule and comprises that the subset occupied information sends submodule, it is used for by described M2 interface the subset occupied information being sent to described eNB, wherein said subset occupied information comprises the bit stream of the PRB subset that the described MBMS business of indication is shared, indication is at the bit stream of the selected directions of continuous P RB described in the described PRB subset, and the bit stream of indicating the take situation of described MBMS business in the described continuous P RB that chooses.
17. MCE according to claim 10 is characterized in that, described frequency domain resource configuration submodule comprises continuous P RB configuration submodule, and it is used for choosing continuous PRB in described system bandwidth and distributes to described MBMS business.
18. MCE according to claim 17, it is characterized in that, described frequency domain resource configuration information sends submodule and comprises that resource occupation indication numerical value sends submodule, it is used for indicating numerical value to send to described eNB resource occupation by described M2 interface, and described resource occupation indication numerical value is indicated the original position of described continuous PRB and the quantity of described continuous PRB.
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| CN103828403A (en) * | 2012-09-17 | 2014-05-28 | 华为技术有限公司 | Method and relative device for indicating and identifying physical resource block (prb) |
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| CN110768758B (en) * | 2018-07-26 | 2021-12-24 | 北京紫光展锐通信技术有限公司 | Method and device for allocating uplink channel resources, storage medium and base station |
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