CN101959138A - Transmission method and system and sending and receiving device of multicast control channel - Google Patents
Transmission method and system and sending and receiving device of multicast control channel Download PDFInfo
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- CN101959138A CN101959138A CN2009101651333A CN200910165133A CN101959138A CN 101959138 A CN101959138 A CN 101959138A CN 2009101651333 A CN2009101651333 A CN 2009101651333A CN 200910165133 A CN200910165133 A CN 200910165133A CN 101959138 A CN101959138 A CN 101959138A
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Abstract
The invention discloses a transmission method and system and a sending and receiving device of a multicast control channel, which improve the utilization efficiency of wireless resources. The method of the invention comprises the following steps: network side equipment sends a system message to a terminal, wherein the system message carries the following contents: a sub-frame allocation pattern (SAP) index or an SAP bitmap corresponding to a sub-frame set of a group of multimedia broadcast and multicast business single frequency networks (MBSFN); the multicast control channel (MCCH) repeatedly sends cycle information and the number N of the sub-frames of the MBSFN occupied by the MCCH in the repeated cycle of the MCCH; and the network side equipment sends a MCCH message on the continuous N sub-frames of the MBSFN from the first sub-frame of the MBSFN in the sub-frame set of the MBSFN in the repeated cycle of the MCCH.
Description
Technical field
The present invention relates to field of wireless communication, particularly transmission method, system and the sending and receiving device of multicast control channel (MCCH, Multicast Control Channel) in LTE (Long Term Evolution, Long Term Evolution) system.
Background technology
2005,3GPP (3rd Generation Partnership Project, third generation partner program) started LTE (Long Term evolution, Long Term Evolution) Yan Jiu working group, the next generation network of the 3.9G (improved 3G) of research and the evolution of design 3G (Third Generation) Moblie technology.
In order to effectively utilize mobile network resource, 3GPP has proposed MBMS (MBMS, Multimedia Broadcast Multicast Service, MBMS), in the mobile network, provide a data source to send the point-to-multipoint service of data to a plurality of users, the realization Internet resources are shared, and improve utilization rate of network resource, the especially Bao Gui interface resource of eating dishes without rice or wine.In the LTE network, the MBMS technology of research is called E-MBMS (Evolved MBMS, improved multimedia broadcast multi-broadcasting business).
In LTE FDD (Frequency Division Duplexing (FDD)) and LTE TDD (time division duplex), on mixed carrier, i.e. existing multicast (multicast) business on this carrier wave, unicast (clean culture) business is also arranged, this moment, radio frames was divided into MBSFN frame (MBMS single frequency network wireless frame, be used to carry the mulicast business, as: broadcasting service) and None-MBSFN frame (non-MBSFN frame, unicast frame just, Unicast frame, be used to carry the unicast business, as: the normal speech business); Part subframe among the MBSFN frame adopts the MBSFN radiation pattern, that is: the subframe among each MBSFN frame is divided into MBSFN subframe (MBSFN subframe) and Non-MBSFNsubframe (non-MBSFN subframe again, that is: unicast subframe), and None-MBSFN frame does not adopt the MBSFN radiation pattern, and adopts the unicast radiation pattern.
As Fig. 1, configuration MBSFN physical resource promptly has 32 radio frames in the cycle of a 320ms on system broadcast message, and each radio frames comprises 10 subframes, always have 320 subframes, according to Testing requirement, which subframe that need indicate 320 subframes is MBSFN subframe.
In the LTE network, no matter be FDD or TDD, no matter whether receive the MBMS business, UE (user equipment, subscriber equipment) needs all to know that each radio frames is the MBSFN frame, need also to know whether each subframe in each MBSFN frame has adopted MBSFN, that is: UE need know that each subframe is MBSFN subframe or Non-MBSFN subframe, so that UE is in enterprising measurement of each subframe and channel estimating.Therefore, E-UTRAN (Evolved UTRAN, EvolvedUniversal Terrestrial Radio Access Network, improved universal terrestrial access network) need pass through system broadcast message, the above-mentioned information of each radio frames and subframe is notified to UE, and UE needs also to know whether each radio frames and each subframe are MBSFN frame and measurement and the channel estimating of MBSFN subframe to carry out each subframe.
According to present disclosed technology, this radio frames is called the MBSFN frame if radio frames wherein contains several MBSFN subframes.In order to save the expense on the system broadcast message, System information block 2 (the SIB2 of the system broadcast message of a sub-district, system information block2) on, by information unit MBSFN-SubframeConfiguration tabulation, adopting radio frames and two levels of wireless sub-frame to indicate the wireless sub-frame of which radio frames is the MBSFN subframe.Comprise one or more MBSFN sub-frame configuration this moment on SIB2, each MBSFN sub-frame configuration is called a SAP (subframeAllocation Pattern, sub-frame allocation pattern).Each SAP configuration comprises:
1) radio frame level: radio frame level adopts the mode of cycle and skew, and indication which radio frames in a time cycle is the radio frames that has disposed the MBSFN subframe, and the radio frames that promptly satisfies following formula is the MBSFN frame:
SFN mod radioFrameAllocationPeriod=radioFrameAllocationOffset (formula 1)
Wherein: SFN is the frame number of radio frames;
RadioFrameAllocationPeriod is the assignment period of radio frames;
RadioFrameAllocationOffset is the allocation offsets of radio frames;
2) wireless sub-frame level: adopt BITMAP (bit mapping, be also referred to as bitmap) 10 subframe middle fingers of each MBSFNframe bright which be MBSFN subframe, that is: on the subframe level, the allocation model that is defined in the MBSFN subframe among these MBSFN frame is identical, that is: identical (10 subframes of each radio frames are numbered the number of the MBSFN subframe that is assigned with among each MBSFN frame and subframe numbering: #0, #1, ..., #9), as shown in Figure 1, radio frames # 0, #1, #2 is MBSFN frame, and the MBSFN subframe configuration in these three frames is identical, is subframe #8.Since the subframe # 0 of FDD, #4, #5 and #9, the subframe # 0 of TDD, #1, #2, #5, #6 can not be configured to the MBSFN subframe regularly, so the Bitmap of the allocation model of wireless sub-frame adopts 6bit, that is: Bit0, and Bit1, Bit2, Bit3, Bit4, Bit5} represents.FDD wherein, the corresponding subframe # 1 of Bit0, the corresponding subframe # 2 of Bit1, the corresponding subframe # 3 of Bit2, the corresponding subframe # 6 of Bit3, the corresponding subframe # 7 of Bit4, the corresponding subframe # 8 of Bit5; TDD, the corresponding subframe # 3 of Bit0, the corresponding subframe # 4 of Bit1, the corresponding subframe # 7 of Bit2, the corresponding subframe # 8 of Bit3, the corresponding subframe # 9 of Bit4, Bit5 keeps no actual use.When certain or some Bit are set to " 1 ", represent that then the pairing subframe of this Bit is configured to the MBSFN subframe.As shown in table 1.
Table 1 adopts Bitmap to represent the allocation model of MBSFN subframe
| Bit number | Bit0 | Bit1 | Bit2 | Bit3 | Bit4 | Bit5 |
| FDD | |
|
|
|
|
|
| TDD | |
|
|
|
|
Meaningless |
For example: certain SAP sub-frame configuration pattern=111100, for FDD, expression subframe # 1, #2, #3, #6 are configured to the MBSFN subframe, for TDD, expression subframe # 3, #4, #7, #8 are configured to the MBSFN frame.
In order to increase configuration flexibility, above-mentioned sub-frame allocation pattern can also adopt the method for salary distribution of 4 continuous radio frames, on the wireless sub-frame rank, represent { Bit0 with 24 bit, Bit1, ... .Bit23}, wherein Bit0-Bit5 indicates the MBSFN subframe of the 1st radio frames, and Bit6-Bit11 indicates the MBSFN subframe of the 2nd radio frames, Bit12-Bit17 indicates the MBSFN subframe of the 3rd radio frames, and Bit18-Bit23 indicates the MBSFN subframe of the 4th radio frames.
In the existing LTE technology, the logic channel of MBMS business is MTCH, the session of the corresponding MBMS business of each bar MTCH.Many the MTCH channel can be mapped to same transmission channel MCH, and a transmission or many MCH channel Mapping are to arriving same physical channel PMCH, and a PMCH channel is made up of one group of MBSFN subframe.And the MCCH channel is the logic channel of carrying MBMS business control information, and MCCH equally also is mapped on the transmission channel MCH, the MCCH channel can shine upon separately or and one or more MTCH channel Mapping in same transmission channel.
In existing LTE technology, introduced the notion of MBSFN area (MBMS single-frequency network area), in a MBSFN area, the professional MBSFN single frequency network mode that adopts of MBMS sends, different districts adopts the duplicate physical signalling of transmission of identical resource, content and time synchronized among the same MBSFN area, to realize the receiving gain of receiving terminal (UE).MCCH and MTCH are mapped to MCH and then are mapped to PMCH, can the MBSFN mode send.Can dispose one or more PMCH in a MBSFN area, a PMCH can carry one or more MCH, and is preferred, MCH channel of a PMCH carrying.The MCCH channel is by channel Mapping, is mapped to wherein among the MCH/PMCH.
The MCCH channel is a multicast control channel, in the prior art, MCCH has carried information such as the MCH/PMCH resource distribution, state, sign of MBMS business, in order to receive a concrete MBMS business, UE needs at first to receive to obtain MCCH message, and then receives Traffic Channel.And the MCCH channel can be mapped in same MCH/PMCH channel with Traffic Channel is multiplexing, so just need outside the MCCH channel, at first indicate the resource at MCCH channel place, in the prior art, network side is indicated the resource at MCCH channel place in system message, just the MBSFN subframe position that is mapped to of MCCH channel.
Indication MCCH channel resource need be considered following Several Factors in system message:
The message that recurrence is sent 1.MCCH channel massage is attached most importance to, just repeat to send once every certain time interval, this time interval is called the repetition period of MCCH, in general, this MCCH repetition period is configured to the integral multiple in SAP cycle, and the MCCH channel generally is mapped to its corresponding PMCH channel in a repetition period in previous or a plurality of subframes.
2.MCCH channel Mapping is to one or more MBSFN subframes, and these MBSFN subframes may be from one or more SAP.
3.MCCH channel Mapping to a plurality of MBSFN subframes may be positioned at different MBSFN radio frames.
4. because the MCCH resource allocation information need be indicated in system message,, avoid excessive system message length so need to consider to optimize signaling consumption.
If above-mentioned factor can not obtain consideration fully, and satisfies its requirement in realization, then will limit the flexibility of the resource allocation of MCCH channel greatly, be unfavorable for system's resource allocation flexibly, thereby improve the utilization ratio of Radio Resource.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of transmission method, system and sending and receiving device of multicast control channel, improves the utilization ratio of Radio Resource.
For solving the problems of the technologies described above, the invention provides a kind of transmission method of multicast control channel, comprising:
Network equipment is to terminal transmitting system message, carry following content in system message: one group of MBMS single frequency network (MBSFN) subframe is gathered pairing sub-frame allocation pattern (SAP) index or SAP bitmap, and multicast control channel (MCCH) repeats to send cycle information and at the number N of the MCCH MBSFN subframe that MCCH occupies in the repetition period;
Described network equipment is integrated into the N continuous MBSFN subframe transmission MCCH message that described MCCH first MBSFN subframe the repetition period begins from described MBSFN subframe.
Further, described terminal receives described system message, is integrated into described MCCH from described MBSFN subframe and repeats the N continuous MBSFN subframe reception MCCH message that first MBSFN subframe begins the transmission cycle.
Further, network equipment also carries a kind of of following content in system message: the subframe bitmap, the cycle of radio frames and the skew of radio frames, the cycle of subframe bitmap and radio frames and skew are used for indicating the part MBSFN subframe of the indicated SAP of described SAP index or SAP bitmap to constitute described MBSFN subframe set.
Further, described MBSFN subframe set is the set of carrying the MBSFN subframe of all PMCH among set of the MBSFN subframe of the PMCH of MCCH channel or the pairing MBSFN area of MCCH channel.
For solving the problems of the technologies described above, the present invention also provides a kind of method of reseptance of multicast control channel, comprising:
Terminal receives the system message that network side sends, comprise following content in the described system message: one group of MBMS single frequency network (MBSFN) subframe is gathered pairing sub-frame allocation pattern (SAP) index or SAP bitmap, and multicast control channel (MCCH) repeats to send cycle information, and at the number N of the MCCH MBSFN subframe that MCCH occupies in the repetition period;
Described terminal is determined the set of MBSFN subframe according to described SAP index or SAP bitmap, determine the MCCH repetition period according to MCCH repetition period information, described terminal is integrated into described MCCH from described MBSFN subframe and repeats the N continuous MBSFN subframe reception MCCH message that first MBSFN subframe begins the transmission cycle.
Further, also comprise a kind of of following content in the described system message: subframe bitmap, the cycle of radio frames and the skew of radio frames, the cycle of subframe bitmap and radio frames and skew; Described terminal is determined by the part MBSFN subframe that constitutes described MBSFN subframe set among the indicated SAP of described SAP index or SAP bitmap according to a kind of in the described foregoing.
For solving the problems of the technologies described above, the present invention also provides a kind of transmission system of multicast control channel, comprises network equipment and terminal, wherein:
Described network equipment is used for to terminal transmitting system message, and carry following content in system message: one group of MBMS single frequency network (MBSFN) subframe is gathered pairing sub-frame allocation pattern (SAP) index or SAP bitmap, and multicast control channel (MCCH) repeats to send cycle information, and at the number N of the MCCH of the described MCCH repetition period information indication continuous N BSFN subframe in the occupied described MBSFN subframe set of MCCH in the repetition period; Described network equipment also is used for being integrated into the N continuous MBSFN subframe that first MBSFN subframe of described MCCH repetition period begins from described MBSFN subframe and sends MCCH message;
Described terminal is used to receive described system message, and is used for being integrated into described MCCH from described MBSFN subframe and repeats the N continuous MBSFN subframe that first MBSFN subframe of transmission cycle begins and receive MCCH message.
For solving the problems of the technologies described above, the present invention also provides a kind of dispensing device of multicast control channel, comprises dispensing unit and transmitting element, wherein:
Described dispensing unit is used for being configured to down content: one group of MBMS single frequency network (MBSFN) subframe gathers that pairing sub-frame allocation pattern (SAP) index or SAP bitmap and multicast control channel (MCCH) repeat to send cycle information and at the number N of the MCCH of the described MCCH repetition period information indication continuous N BSFN subframe of the occupied described MBSFN subframe set of MCCH in the repetition period; Described transmitting element, be used for the information of described dispensing unit configuration is sent to terminal by system message, and be used for being integrated into the N continuous MBSFN subframe transmission MCCH message that first MBSFN subframe of described MCCH repetition period begins from described MBSFN subframe.
Further, described dispensing unit also is used for being configured to down a kind of of content, be used for indicating the part MBSFN subframe of the indicated SAP of described SAP index or SAP bitmap to constitute described MBSFN subframe set: the subframe bitmap, the cycle of radio frames and the skew of radio frames, the cycle of subframe bitmap and radio frames and skew.
For solving the problems of the technologies described above, the present invention also provides a kind of receiving system of multicast control channel, comprises dispensing unit and receiving element, wherein:
Described receiving element, be used to receive the system message that network side sends, comprise following content in the described system message: one group of MBMS single frequency network (MBSFN) subframe is gathered pairing sub-frame allocation pattern (SAP) index or SAP bitmap, and multicast control channel (MCCH) repeats to send cycle information, and at the number N of the MCCH MBSFN subframe that MCCH occupies in the repetition period; And be integrated into described MCCH according to the content that described dispensing unit sends from described MBSFN subframe and repeat the N continuous MBSFN subframe reception MCCH message that first MBSFN subframe begins the transmission cycle; Described dispensing unit, the described SAP index or the SAP bitmap that are used for receiving according to described receiving element are determined the set of MBSFN subframe, determine the MCCH repetition period according to MCCH repetition period information, and described information is returned to described receiving element.
Further, also comprise a kind of of following content in the described system message: subframe bitmap, the cycle of radio frames and the skew of radio frames, the cycle of subframe bitmap and radio frames and skew; Described device is used for determining by the part MBSFN subframe that constitutes described MBSFN subframe set among the indicated SAP of described SAP index or SAP bitmap according to described foregoing a kind of.
Adopt the method for the invention, satisfy MCCH with less signaling consumption and be placed on a plurality of subframes, and these subframes are a radio frames, and from the resource allocation demand of a plurality of SAP.Improve the flexibility of MCCH channel resource allocation, improve the utilization ratio of Radio Resource.
Description of drawings
Fig. 1 is the schematic diagram that available technology adopting radio frames rank and subframe rank are indicated the MBSFN resource;
Fig. 2 is the instance graph of MCCH resource allocation at the different radio frame;
Fig. 3 is a schematic diagram of selecting the part MBSFN subframe among the SAP by cycle and offset manner;
Fig. 4 is a schematic diagram of selecting a part MBSFN subframe among the SAP by the bitmap mode.
Embodiment
Network equipment is to terminal transmitting system message, carry following content in system message: one group of MBSFN subframe is gathered pairing SAP index or SAP bitmap, and the MCCH channel repeats to send cycle information, and the number N (N 〉=1) of the MBSFN subframe that MCCH occupies in the MCCH repetition period (this MCCH repetition period is by the indication of described MCCH repetition period information), described N MBSFN subframe is continuous in the set of MBSFN subframe.
Described terminal receives described system message, determine the set of MBSFN subframe according to described SAP index or SAP bitmap, determine the MCCH repetition period according to MCCH repetition period information, described terminal is integrated into described MCCH from described MBSFN subframe and repeats the N continuous MBSFN subframe reception MCCH message that first MBSFN subframe begins the transmission cycle.
Above-mentioned MBSFN subframe set or claim MBSFN sub-frame allocation pattern (MSAP) is the set of the MBSFN subframe of all PMCH among the MBSFN subframe set of the PMCH of carrying MCCH channel or the pairing MBSFN area of MCCH channel.
Described network equipment is integrated into the N continuous MBSFN subframe transmission MCCH message that described MCCH first MBSFN subframe the repetition period begins from described MBSFN subframe.Network equipment is in described MCCH repeats the transmission cycle, send the MCCH channel massage in the top n continuous N BSFN subframe in the described MBSFN subframe set, described N continuous N BSFN number of sub-frames is the number that the MCCH channel massage once sends the continuous N BSFN subframe that occupies.That is to say that network equipment is carried on the MCCH channel massage in the top n subframe in the set of described MBSFN subframe.Default, the continuous N BSFN number of sub-frames that this MCCH channel occupies is 1.
The MBSFN sub-frame allocation pattern of the list item definition of the above-mentioned SAP MBSFN-SubframeConfiguration tabulation that to be network equipment carry by system message SIB2.
Network equipment selects the part or all of subframe of one or more SAP to constitute described MBSFN subframe set.Can indicate the part MBSFN subframe among the described SAP (by SAP index or the indication of SAP bitmap) to constitute the set of MBSFN subframe by a kind of in the following content: the subframe bitmap, the cycle of radio frames and skew, the cycle of subframe bitmap and radio frames and skew.At this moment, described terminal is according to SAP index or SAP bitmap, and a kind of definite MBSFN subframe set in the foregoing in the system message.
Network equipment is by SAP index or the described MBSFN subframe set of SAP bitmap indication UE.UE can be known above-mentioned MBSFN subframe set by above-mentioned SAP bitmap or SAP bitmap that network equipment sends.
The system of putting that realizes said method comprises network equipment and terminal, wherein:
Described network equipment is used for to terminal transmitting system message, and carry following content in system message: one group of MBSFN subframe is gathered pairing SAP index or SAP bitmap, and MCCH repeats to send cycle information, and at the number N of the MCCH of the described MCCH repetition period information indication continuous N BSFN subframe in the occupied described MBSFN subframe set of MCCH in the repetition period; Described network equipment also is used for being integrated into the N continuous MBSFN subframe that first MBSFN subframe of described MCCH repetition period begins from described MBSFN subframe and sends MCCH message;
Described terminal is used to receive described system message, and is used for being integrated into described MCCH from described MBSFN subframe and repeats the N continuous MBSFN subframe that first MBSFN subframe of transmission cycle begins and receive MCCH message.
The dispensing device of multicast control channel (network equipment) comprises dispensing unit and transmitting element, wherein:
Described dispensing unit is used for being configured to down content: one group of MBSFN subframe gathers that pairing SAP index or SAP bitmap and MCCH repeat to send cycle information and at the number N of the MCCH of the described MCCH repetition period information indication continuous N BSFN subframe of the occupied described MBSFN subframe set of MCCH in the repetition period;
Described transmitting element, be used for the information of described dispensing unit configuration is sent to terminal by system message, and be used for being integrated into the N continuous MBSFN subframe transmission MCCH message that first MBSFN subframe of described MCCH repetition period begins from described MBSFN subframe.
Above-mentioned dispensing unit also is used for being configured to down a kind of of content, be used for indicating the part MBSFN subframe of described SAP index or SAP bitmap to constitute described MBSFN subframe set: the subframe bitmap, the cycle of radio frames and the skew of radio frames, the cycle of subframe bitmap and radio frames and skew.
The receiving system of multicast control channel (terminal) comprises dispensing unit and receiving element, wherein:
Described receiving element, be used to receive the system message that network side sends, comprise following content in the described system message: one group of MBSFN subframe is gathered pairing SAP index or SAP bitmap, and MCCH repeats to send cycle information, and at the number N of the MCCH MBSFN subframe that MCCH occupies in the repetition period, described N MBSFN subframe is continuous in the set of MBSFN subframe; And be integrated into described MCCH according to the content that described dispensing unit sends from described MBSFN subframe and repeat the N continuous MBSFN subframe reception MCCH message that first MBSFN subframe begins the transmission cycle;
Described dispensing unit, the described SAP index or the SAP bitmap that are used for receiving according to described receiving element are determined the set of MBSFN subframe, determine the MCCH repetition period according to MCCH repetition period information, and described information is returned to described receiving element.
Also comprise a kind of of following content in the said system message: subframe bitmap, the cycle of radio frames and the skew of radio frames, the cycle of subframe bitmap and radio frames and skew; Described dispensing unit is used for according to described SAP index or SAP bitmap, and a kind of definite MBSFN subframe set in the foregoing in the system message.Particularly, described terminal is determined by the part MBSFN subframe that constitutes described MBSFN subframe set among the indicated SAP of described SAP index or SAP bitmap according to a kind of in the described foregoing.
Concrete, network equipment is indicated the method for above-mentioned MBSFN subframe set:
Mode one: indication constitutes one or more SAP of above-mentioned MBSFN subframe set in system message, and this moment, all MBSFN subframes of described one or more SAP all belonged to above-mentioned MBSFN subframe set.At this moment, a described SAP configuration information is expressed as and points to one index among the MBSFN-SubframeConfiguration among the SIB2, or a bit in bitmap, among the corresponding MBSFN-SubframeConfiguration of each bit one.
Mode two: on the basis of mode one, further, from each SAP, select part MBSFN subframe to constitute described MBSFN subframe set.Concrete, at first indicate SAP information, indicate selection portion branch subframe in this SAP again, from a SAP, select the mode of part or all of MBSFN subframe to have: the bitmap by indication MBSFN subframe in each radio frames in this SAP or, by indicating the cycle and the skew of the radio frames that is used for the set of described MBSFN subframe among this SAP, or by indicating cycle, skew and the subframe bitmap of the radio frames that is used for described MBSFN subframe set among this SAP.Here said periodic table is shown the number of Radio Frame Number, or the number of the MBSFN radio frames of this SAP configuration.
When the SAP number of configuration more for a long time, with bitmap indication SAP saving signaling expense more.
By above-mentioned method, network side is the MBSFN subframe of MCCH channel allocation from one or more SAP, takies the number of MBSFN subframe continuously by indicating the MCCH channel, can make the MBSFN subframe of carrying MCCH channel be positioned at identical or different radio frames.
For example shown in Figure 2:
The subframe that constitutes described MBSFN set is from SAP-1 and SAP-2, wherein the assignment period of SAP-1 is 1 radio frames, skew is 0 (first radio frames in each assignment period), the wireless sub-frame that distributes is the 8th subframe, and the assignment period of SAP-2 is 2 radio frames, skew is 1 (second radio frames in each assignment period), and the wireless sub-frame of distribution is the 3rd subframe.Wireless sub-frame from SAP-1 and SAP-2 has constituted this MBSFN subframe set like this.This MBSFN subframe set is for constituting the MBSFN sub-frame resources of the MCH/PMCH channel that carries MCCH.
The MCCH repetition period, as shown in the figure, the MCCH subframe occupied preceding 2 subframes in a MCCH this MBSFN subframe set in the repetition period from radio frames 0, and these two subframes are respectively from SAP-1 and SAP-2.Simultaneously, these two subframes lay respectively in two different radio frames.
Constituting the method for MBSFN subframe set of the present invention below with example explanation more specifically, is the example explanation with FDD:
One of method:
In the method, constitute the set of the SAP of MBSFN subframe set, indicate the MBSFN subframe set of all PMCH among the PMCH that constitutes carrying MCCH or the pairing MBSFN Area of MCCH by indication in system message.
Concrete, in System information block 2 or System information block 12, in the MBSFN-AreaInfo block of information, carry the tabulation of a SAP information, the index of each in the tabulation for the MBSFN-SubframeConfiguration of sensing in System information block 2.
In this case, the above-mentioned SAP information list pairing MBSFN subframe of the pairing one or more SAP of index of carrying has constituted the MBSFN subframe set among the present invention.
For example 3 SAP configuration: SAP-1 have been disposed at the MBSFN-SubframeConfiguration of SIB2, SAP-2, SAP-3, its index is respectively 0,1, and 2, and in example of the present invention, select SAP-1 and SAP-2 for constituting MBSFN subframe set of the present invention, the SAP information list that then described system message is carried carries two list items, and its value is respectively 0 and 1.
Be concrete message definition below:
MBSFN-AreaInfo::＝ SEQUENCE{
mbsfn-AreaId INTEGER(1..maxMBSFN-Area)，
Mcch-Config SEQUENCE{--MCCH configuration
RepetitionPeriod INTEGER,--the MCCH repetition period
SubframeAllocationInfo MBSFNSapList,--the SAP information list
MCCHSubframeNumber INTEGER,--the MCCH number of sub-frames
}，
}
MBSFNSAPList::＝ SEQUECE(SIZE(1..maxMBSFN-Allocations))OF?SAPConfig
SAPConfig::＝ SEQUENCE{
SAPIndex INTEFER,--point to the index of MBSFN-SubframeConfiguration among the SIB2
}
Two of method:
In the method, constitute the set of the SAP of MBSFN subframe set by indication in system message, indicate the PMCH that constitutes carrying MCCH or, the MBSFN subframe set of all PMCH among the pairing MBSFN Area of MCCH.
Concrete, in System information block 2 or 12, carry the bitmap of a SAP information, the SAP configuration of MBSFN-SubframeConfiguration in this bitmap in the corresponding System information block 2 of each bit, if certain bit value is 1 in this bitmap, the MBSFN subframe of then representing the SAP configuration of this bit correspondence is the part of MBSFN subframe set of the present invention.
In this case, one or more SAP of above-mentioned SAP bitmap indication dispose pairing MBSFN subframe and have constituted the MBSFN subframe set among the present invention.
For example 3 SAP configuration: SAP-1 have been disposed at the MBSFN-SubframeConfiguration of SIB2, SAP-2, SAP-3, its index is respectively 0,1, and 2, and in example of the present invention, select SAP-1 and SAP-2 for constituting MBSFN subframe set of the present invention, the value of the SAP information bitmap that then described system message is carried is 0x11000000, and first among the expression SIB2 among the MBSFN-SubframeConfiguration and second configuration constitute MBSFN subframe set of the present invention.
Be concrete message definition below:
MBSFN-AreaIno::＝ SEQUENCE{
mbsfn-AreaId INTEGER(1..maxMBSFN-Area)，
Mcch-Config SEQUENCE{--MCCH configuration
The repetitionPeriod INTEGER.--MCCH repetition period
SubframeAllocationInfo BIT String (maxMBSFN-Allocations),--SAP information bitmap
MCCHSubframeNumber INTEGER,--the MCCH number of sub-frames
}，
}
Three of method:
According to method one or method two, select one or more SAP, one or more SAP to selecting then, select again in its MBSFN subframe partly or entirely.Concrete, can have following mode to select the part of MBSFN subframe among the SAP:
The bitmap of this SAP subframe is selected in definition, and this bitmap has defined which subframe is used for MBSFN subframe set of the present invention in the subframe that defines in the MBSFN-SubframeConfiguration of SIB2.For example, as shown in Figure 3, in the SAP definition, its assignment period is 1, skew is 0, its MBSFN subframe bitmap is 0x001100 (representing the 3rd in the radio frames and the 6th wireless sub-frame), and the present invention selects bitmap 0x000100 for this SAP has defined a subframe again, the part subframe of MBSFN subframe that is used for selecting above-mentioned SAP definition is as the part of MBSFN subframe set of the present invention, the subframe that then constitutes MBSFN subframe of the present invention set comprises the subframe # 6 in the defined MBSFN subframe of this SAP, and does not comprise subframe # 3.
Another kind of mode, definition select the subframe selection cycle of this SAP subframe and subframe to select skew.SAP for example shown in Figure 4, its assignment period are 1, and skew is 0, and the subframe bitmap is 0x001100.And the present invention is 2 for subframe selection cycle of this SAP definition, it is 1 that subframe is selected skew, and then the wireless sub-frame in second radio frames in per two radio frames (wireless sub-frame of subframe bitmap 0x001100 definition) is the part of formation MBSFN subframe set of the present invention among this SAP.
Below the MCCH resource allocation methods of another concrete example explanation the inventive method.
One group of SAP configuration of definition in the MBSFN-SubframeConfiguration of SIB2 carrying.Wherein the cycle of SAP-1 is 1, and skew is 0, and sub-frame configuration is a subframe 8.The cycle of SAP-2 is 2, and skew is 1, and sub-frame configuration is a subframe 3.
In MBSFN-AreaInfo (the MBMS single-frequency network area information) cell that SIB12 carries, the indication MCCH repetition period is 320ms, and it is 2 that MCCH takies number of sub-frames.In the MBSFN-AreaInfo message that SIB12 carries, the set that indication constitutes the MBSFN subframe of the PMCH channel that carries the MCCH channel is following mode: a SAP information bitmap, the wherein configuration of MBSFN-SubframeConfiguration among each corresponding SIB2.In this example, the value of this bitmap is 0x1100000, and the MBSFN subframe that expression constitutes described PMCH be first and second all subframe that SAP disposes.
Because the repetition period of MCCH is 320ms, 32 radio frames just, then among 32 radio frames of SFN Mod 32=31, preceding 2 wireless sub-frames of the MBSFN subframe of above-mentioned PMCH send MCCH message to network equipment at SFN Mod 32=0.In this embodiment, first MBSFN wireless sub-frame in the MBSFN subframe of described PMCH is the 8th subframe of the radio frames of SFN mod 32=0, the 3rd subframe of the radio frames that second MBSFN wireless sub-frame is SFN Mod 32=1.Then network equipment sends MCCH message in these two subframes.
UE is according to the MCCH repetition period, and the set of the MBSFN subframe of the PMCH of carrying MCCH, obtains carrying the position of MBSFN subframe of MCCH message and the number of the continuous MBSFN subframe that takies.UE receives MCCH message in above-mentioned MBSFN subframe.
Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (11)
1. the transmission method of a multicast control channel is characterized in that,
Network equipment is to terminal transmitting system message, carry following content in system message: one group of MBMS single frequency network (MBSFN) subframe is gathered pairing sub-frame allocation pattern (SAP) index or SAP bitmap, and multicast control channel (MCCH) repeats to send cycle information and at the number N of the MCCH MBSFN subframe that MCCH occupies in the repetition period;
Described network equipment is integrated into the N continuous MBSFN subframe transmission MCCH message that described MCCH first MBSFN subframe the repetition period begins from described MBSFN subframe.
2. the method for claim 1 is characterized in that,
Described terminal receives described system message, is integrated into described MCCH from described MBSFN subframe and repeats the N continuous MBSFN subframe reception MCCH message that first MBSFN subframe begins the transmission cycle.
3. the method for claim 1 is characterized in that,
Network equipment also carries a kind of of following content in system message: the subframe bitmap, the cycle of radio frames and the skew of radio frames, the cycle of subframe bitmap and radio frames and skew are used for indicating the part MBSFN subframe of the indicated SAP of described SAP index or SAP bitmap to constitute described MBSFN subframe set.
4. as claim 1 or 2 or 3 described methods, it is characterized in that,
Described MBSFN subframe set is the set of carrying the MBSFN subframe of all PMCH among set of the MBSFN subframe of the PMCH of MCCH channel or the pairing MBSFN area of MCCH channel.
5. the method for reseptance of a multicast control channel is characterized in that,
Terminal receives the system message that network side sends, comprise following content in the described system message: one group of MBMS single frequency network (MBSFN) subframe is gathered pairing sub-frame allocation pattern (SAP) index or SAP bitmap, and multicast control channel (MCCH) repeats to send cycle information, and at the number N of the MCCH MBSFN subframe that MCCH occupies in the repetition period;
Described terminal is determined the set of MBSFN subframe according to described SAP index or SAP bitmap, determine the MCCH repetition period according to MCCH repetition period information, described terminal is integrated into described MCCH from described MBSFN subframe and repeats the N continuous MBSFN subframe reception MCCH message that first MBSFN subframe begins the transmission cycle.
6. method as claimed in claim 5 is characterized in that,
Also comprise a kind of of following content in the described system message: subframe bitmap, the cycle of radio frames and the skew of radio frames, the cycle of subframe bitmap and radio frames and skew;
Described terminal is determined by the part MBSFN subframe that constitutes described MBSFN subframe set among the indicated SAP of described SAP index or SAP bitmap according to a kind of in the described foregoing.
7. the transmission system of a multicast control channel is characterized in that, described system comprises network equipment and terminal, wherein:
Described network equipment is used for to terminal transmitting system message, and carry following content in system message: one group of MBMS single frequency network (MBSFN) subframe is gathered pairing sub-frame allocation pattern (SAP) index or SAP bitmap, and multicast control channel (MCCH) repeats to send cycle information, and at the number N of the MCCH of the described MCCH repetition period information indication continuous N BSFN subframe in the occupied described MBSFN subframe set of MCCH in the repetition period; Described network equipment also is used for being integrated into the N continuous MBSFN subframe that first MBSFN subframe of described MCCH repetition period begins from described MBSFN subframe and sends MCCH message;
Described terminal is used to receive described system message, and is used for being integrated into described MCCH from described MBSFN subframe and repeats the N continuous MBSFN subframe that first MBSFN subframe of transmission cycle begins and receive MCCH message.
8. the dispensing device of a multicast control channel is characterized in that, described dispensing device comprises dispensing unit and transmitting element, wherein:
Described dispensing unit is used for being configured to down content: one group of MBMS single frequency network (MBSFN) subframe gathers that pairing sub-frame allocation pattern (SAP) index or SAP bitmap and multicast control channel (MCCH) repeat to send cycle information and at the number N of the MCCH of the described MCCH repetition period information indication continuous N BSFN subframe of the occupied described MBSFN subframe set of MCCH in the repetition period;
Described transmitting element, be used for the information of described dispensing unit configuration is sent to terminal by system message, and be used for being integrated into the N continuous MBSFN subframe transmission MCCH message that first MBSFN subframe of described MCCH repetition period begins from described MBSFN subframe.
9. device as claimed in claim 8 is characterized in that,
Described dispensing unit also is used for being configured to down a kind of of content, be used for indicating the part MBSFN subframe of the indicated SAP of described SAP index or SAP bitmap to constitute described MBSFN subframe set: the subframe bitmap, the cycle of radio frames and the skew of radio frames, the cycle of subframe bitmap and radio frames and skew.
10. the receiving system of a multicast control channel is characterized in that, described receiving system comprises dispensing unit and receiving element, wherein:
Described receiving element, be used to receive the system message that network side sends, comprise following content in the described system message: one group of MBMS single frequency network (MBSFN) subframe is gathered pairing sub-frame allocation pattern (SAP) index or SAP bitmap, and multicast control channel (MCCH) repeats to send cycle information, and at the number N of the MCCH MBSFN subframe that MCCH occupies in the repetition period; And be integrated into described MCCH according to the content that described dispensing unit sends from described MBSFN subframe and repeat the N continuous MBSFN subframe reception MCCH message that first MBSFN subframe begins the transmission cycle;
Described dispensing unit, the described SAP index or the SAP bitmap that are used for receiving according to described receiving element are determined the set of MBSFN subframe, determine the MCCH repetition period according to MCCH repetition period information, and described information is returned to described receiving element.
11. device as claimed in claim 10 is characterized in that,
Also comprise a kind of of following content in the described system message: subframe bitmap, the cycle of radio frames and the skew of radio frames, the cycle of subframe bitmap and radio frames and skew;
Described device is used for determining by the part MBSFN subframe that constitutes described MBSFN subframe set among the indicated SAP of described SAP index or SAP bitmap according to described foregoing a kind of.
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