CN101800942A - Method and system for transmitting multipoint control channel (MCCH) change message - Google Patents
Method and system for transmitting multipoint control channel (MCCH) change message Download PDFInfo
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- CN101800942A CN101800942A CN201010123829A CN201010123829A CN101800942A CN 101800942 A CN101800942 A CN 101800942A CN 201010123829 A CN201010123829 A CN 201010123829A CN 201010123829 A CN201010123829 A CN 201010123829A CN 101800942 A CN101800942 A CN 101800942A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0003—Two-dimensional division
- H04L5/0005—Time-frequency
- H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
- H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT the frequencies being arranged in component carriers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0091—Signaling for the administration of the divided path
- H04L5/0096—Indication of changes in allocation
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Abstract
The invention discloses a method and a system for transmitting a multipoint control channel (MCCH) change message. The method comprises the steps of: selecting a first component carrier in a plurality of component carriers by a base station, and transmitting the MCCH change message corresponding to a second component carrier on the first component carrier to user equipment by the base station, wherein the second component carrier is the same with or different from the first component carrier. According to the technical scheme provided by the invention, the MCCH change message can be dynamically transmitted under a scene of the plurality of component carriers, and can be rightly obtained by the user equipment.
Description
Technical field
The present invention relates to the communications field, change the transmission of Information method and system in particular to a kind of MCCH.
Background technology
In order to satisfy (the International TelecommunicationUnion-Advanced of senior International Telecommunications Union, abbreviate ITU-Advanced as) requirement, as Long Term Evolution (Long Term Evolution, abbreviate LTE as) senior Long Term Evolution (the Long Term Evolution Advanced of evolution standard, abbreviating LTE-A as) system need support bigger system bandwidth (reaching as high as 100MHz), and need the existing standard of backward compatibility LTE.On the basis of prior LTE system, the band width configuration of LTE system can be merged to obtain bigger bandwidth, above-mentioned technology is called carrier aggregation (CarrierAggregation, abbreviate CA as) technology, this carrier aggregation technology can improve high-grade intelligent multi mode terminal (Intelligent Multimode Terminal, abbreviating IMT-Advance as) availability of frequency spectrum of system, to alleviate frequency spectrum resource in short supply, and then can optimize the utilance of frequency spectrum resource.
In the LTE system, Physical Downlink Control Channel (Physical downlink controlchannel abbreviates PDCCH as) is used to carry the uplink and downlink schedule information, and uplink power control information.
In the LTE system, Physical Downlink Shared Channel (Physical Downlink SharedChannel abbreviates PDSCH as) is used for transmitting user data.
The transformat of Downlink Control Information (Downlink Control Information abbreviates DCI as) can be divided into following several: DCI format 0,1,1A, 1B, 1C, 1D, 2,2A, 3,3A etc.Below be described respectively:
DCI format 0 is used to indicate the scheduling of Physical Uplink Shared Channel (Physical uplinkshared channel abbreviates PUSCH as);
DCI format 1,1A, 1B, 1C, 1D are used for the different transmission mode of the Physical Downlink Shared Channel (Physical Downlink Shared Channel abbreviates PDSCH as) of single transport piece;
DCI format 2,2A are used for the different transmission mode of descending PDSCH space division multiplexing;
DCI format 3,3A are used for the transmission of the power control instruction of Physical Uplink Control Channel (Physical uplinkcontrol channel abbreviates PUCCH as) and PUSCH.
Above-mentioned DCI format 0,1A, 3, the transmission block size of 3A is the same, and wherein, DCIformat 0, and 1A adopts 1 bit to carry out form and distinguishes.
Process about the blind Detecting of Physical Downlink Control Channel among the LTE (PDCCH) is briefly described as follows, control channel unit (Control channel element, abbreviate CCE as) be the minimum unit of carrying PDCCH resource, the control area is made up of a series of CCEs.
PDCCH blind check scope is defined by the search volume, and common search space and UE dedicated search space are divided in the search volume.Search volume S
k (L)Be defined as:
Wherein, CCE polymerization grade L ∈ 1,2,4,8}, Y
kTo the common search space Y
k=0, i.e. search from CCE=0～15.To UE dedicated search space Y
k=(AY
K-1) mod D, Y
-1=n
RNTI≠ 0, A=39827, D=65537,
n
sExpression time-gap number 0～19.I=0 ..., L-1, m=0 ..., M
(L)-1.M
(L)Be the quantity that the given back of L PDCCH waits inspection collection (candidates) in the search volume.
Wherein, n
RNTIExpression Radio Network Temporary Identifier value (Radio Network TemporaryIdentifier abbreviates RNTI as).Said n
RNTIA value among the corresponding following Radio Network Temporary Identifier:
System information RNTI (System information-RNTI abbreviates SI-RNTI as);
Insert RNTI (Random access-RNTI abbreviates RA-RNTI as) at random;
Call out RNTI (Paging-RNTI abbreviates P-RNTI as);
Sub-district RNTI (Cell-RNTI abbreviates C-RNTI as);
Semi-persistent scheduling RNTI (Semi-persistent scheduling RNTI abbreviates SPS-RNTI as);
Interim sub-district RNTI (Temporary C-RNTI).
Said n
RNTIConcrete which class RNTI that selects is disposed by high-level signaling, and concrete value is also specified by corresponding signaling and data.The value of RNTI is referring to shown in the following table 1.,, detect during the UE blind Detecting referring to shown in the following table 2 according to the search volume of polymerization tier definition according to the DCI format of the transmission mode correspondence of down link.16 bit cyclic redundancy of each Downlink Control Information DCI (Cyclical redundancy check abbreviates CRC as) are with above-mentioned RNTI scrambling.The configurable different RNTI of different UE carries out scrambling to CRC, thereby can distinguish the DCI of different UEs.
Table 1:RNTI value
The PDCCH candidates of table 2:UE monitoring
In the LTE system, multicast control channel (Multicast Control Channel, abbreviating MCCH as) change information (change information) transmits by DCI format 1C, wherein, it is consistent to carry the MCCH amount of bits that DCI format 1C comprises when changing amount of bits that the DCI format 1C of information comprises and DCI format 1C as the Downlink Control Information (format 1C used for very compact scheduling of onePDSCH codeword) that carries a streams of code words Physical Shared Channel, MCCH change information is 8 bits, and remaining bits is reserved among the DCI format 1C.MCCH changes the blind Detecting of information and only carries out in the common search space, and the CRC of DCI (comprise MCCH and revise information) adopts unique M (Multicast)-RNTI scrambling.
Under the LTE-A carrier aggregation scene, introduced multiple carrier type.The LTE-A carrier type can be divided into: backward compatibility carrier wave (Backwards compatible carrier), non-backward compatible carrier waves (Non-backwards compatible carrier) and expansion carrier wave (Extension carrier) three types.
The expansion carrier wave has two kinds of implications: (1) is as the component carrier part of (Component carrier is called for short CC); (2) as an independent components carrier wave.The expansion carrier wave can not work alone, and must belong to the part in the group component carrier wave collection, and has at least one can work alone in the component carrier in this set.The expansion carrier wave is sightless for LTE UEs.
For simplicity of design and consider various possible application scenarioss, the expansion carrier wave is configured to there is not PDCCH.The DCI that expands the carrier wave correspondence so need transmit on other component carriers.
Under the LTE-A carrier aggregation scene, defined PDCCH component carrier collection (PDCCH CC set), UE need carry out blind Detecting in PDCCH CC set; Also defined downlink component carrier collection (Downlink component carrier set abbreviates DLCC set as), the PDSCH of UE can send on the CC arbitrarily in DL CC set.Under the LTE-A carrier aggregation scene, allow to stride carrier dispatching, promptly the PDCCH on certain component carrier can dispatch PDSCH or the PUSCH on a plurality of component carriers.
But, revising the sending method of information in multiple component carriers about MCCH does not at present also determine, therefore subscriber equipment can't correctly obtain this MCCH and revise information, thereby can't determine that also this MCCH revises the information that the MCCH information on the pairing component carrier of information changes.
Summary of the invention
Can't correctly obtain this multicast control channel at subscriber equipment in the correlation technique changes the problem of information and proposes the present invention, for this reason, main purpose of the present invention is to provide a kind of improved multicast control channel MCCH to change the transmission of Information method, one of to address the above problem at least.
According to an aspect of the present invention, provide a kind of MCCH to change the transmission of Information method.
Changing the transmission of Information method according to MCCH of the present invention comprises: the base station is selected first component carrier in multiple component carriers; And the base station changes message transmission to subscriber equipment with the MCCH of second component carrier wave correspondence on first component carrier, and wherein, the second component carrier wave is same or different from first component carrier.
According to a further aspect in the invention, provide a kind of MCCH to change the transmission of Information system.
Changing the transmission of Information system according to MCCH of the present invention comprises: the base station, be used at selected first component carrier of multiple component carriers, and on first component carrier, the MCCH of second component carrier wave correspondence is changed message transmission to subscriber equipment, wherein, the second component carrier wave is same or different from first component carrier; Subscriber equipment, the MCCH that is used for reception second component carrier wave correspondence on first component carrier changes information.
By the present invention, the base station changes message transmission to subscriber equipment with the MCCH of this carrier wave or other carrier wave correspondences on selected component carrier.Solved that subscriber equipment can't correctly obtain the problem that MCCH changes information in the correlation technique, and then can realize that multicast control channel changes the information dynamic transmission under the multiple component carriers scene, and realize that subscriber equipment changes correctly obtaining of information to this multicast control channel.
Other features and advantages of the present invention will be set forth in the following description, and, partly from specification, become apparent, perhaps understand by implementing the present invention.Purpose of the present invention and other advantages can realize and obtain by specifically noted structure in the specification of being write, claims and accompanying drawing.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the structured flowchart that changes the transmission of Information system according to the MCCH of the embodiment of the invention;
Fig. 2 is that MCCH changes the structured flowchart of transmission of Information system according to the preferred embodiment of the invention;
Fig. 3 is that MCCH changes the message transmission schematic diagram of transmission of Information system according to the preferred embodiment of the invention;
Fig. 4 is the flow chart that changes the transmission of Information method according to the MCCH of the embodiment of the invention;
Fig. 5 sends the schematic diagram that multicast control channel changes information for the carrier wave of striding according to the embodiment of the invention under the scene of multiple component carriers.
Embodiment
Need to prove that under the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.Describe the present invention below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
According to the embodiment of the invention, at first provide a kind of MCCH to change the transmission of Information system.
Fig. 1 is the structured flowchart that changes the transmission of Information system according to the MCCH of the embodiment of the invention.As shown in Figure 1, this MCCH change transmission of Information system comprises with lower device: base station 10, subscriber equipment 20.
Base station 10 is used at selected first component carrier of multiple component carriers, and on first component carrier MCCH of second component carrier wave correspondence is changed message transmission to subscriber equipment, and wherein, the second component carrier wave is same or different from first component carrier;
Subscriber equipment 20, the MCCH that is used for reception second component carrier wave correspondence on first component carrier changes information.
Said system can realize that multicast control channel changes the information dynamic transmission under the multiple component carriers scene, and realizes that 20 pairs of these multicast control channels of subscriber equipment change correctly obtaining of information.
Preferably, as shown in Figure 2, base station 10 may further include: first choice device 100 is used for according to the selected component carrier of high-level signaling indication; Second choice device 102 is used for from default unique carrier wave or the selected component carrier of unique related carrier wave; The 3rd choice device 104 is used for concentrating selected at random component carrier from the physical downlink control channel PDCCH component carrier; The 4th choice device 106 is used to select resident carrier wave as first component carrier.
In specific implementation process, base station 10 is the selected component carrier of multicast control channel change information to be sent by following one of at least mode:
(1) the selected component carrier of high-level signaling indication;
Wherein, by the selected component carrier that sends multicast control channel change information in base station, the base station utilizes high-level signaling to pass through the 3rd layer of radio resource control layer (Radio ResourceControl, abbreviate RRC as) indication information of selected component carrier is sent to one or more UE, UE resolves the indication information that high-level signaling obtains selected component carrier; The base station sends the DCI that multicast control channel changes information on selected component carrier, UE detects the DCI that multicast control channel changes information on selected carrier wave.
(2) unique carrier wave or unique related carrier wave in the Physical Downlink Control Channel component carrier collection of selected subscriber equipment;
Wherein, when PDCCH component carrier set pair has only one in UE, perhaps when expansion carrier wave B (being the second component carrier wave) is only related with one-component carrier wave A (i.e. first component carrier), the former UE needs the multicast control channel of blind Detecting to change the DCI of information on the first unique component carrier, latter UE needs DCI that the multicast control channel of the second component carrier wave of blind Detecting changes information on unique component carrier A, does not then need the high-level signaling indication this moment.
(3) concentrate selected at random component carrier from the PDCCH component carrier;
Wherein, can concentrate the multicast control channel of selecting any one component carrier send the expansion carrier wave to change the DCI of information or striden the DCI of multicast control channel change information of the component carrier of carrier dispatching from the component carrier of PDCCH.For example, can concentrate optional one-component carrier wave A, be used to send the DCI that the multicast control channel of expanding carrier wave B changes information from component carrier.
(4) adopt resident carrier wave as selected component carrier.
Wherein, when the multicast control channel of other component carriers beyond UE need obtain the component carrier collection of PDCCH changed information, the DCI that multicast control channel changes information can send on the descending resident carrier wave of UE.
Particularly, the change of the multicast control channel among LTE-A information can be striden carrier dispatching; That is to say, the Downlink Control Information (DCI) that the multicast control channel change information of component carrier B (being above-mentioned second component carrier wave) is relevant can (be above-mentioned second component carrier wave at other component carriers A by the base station, wherein, B is different from A) on send to subscriber equipment (User Equipment, abbreviate UE as), UE can be on carrier wave A the relevant Downlink Control Information (DCI) of detected carrier B multicast control channel change information;
The component carrier A (being above-mentioned first component carrier) of the Downlink Control Information that the multicast control channel change information of base station transmission component carrier B is relevant can dispose by high-level signaling; Or any one carrier wave in the PDCCH component carrier collection; Or resident carrier wave; Or in the PDCCH component carrier collection of UE a unique only carrier wave A or only with expansion carrier wave B related one-component carrier wave A, the multicast control channel that this moment, UE need detect changes information on unique component carrier A.
Preferably, as shown in Figure 2, above-mentioned base station 10 comprises with one of lower device: first indicating device 108, be used for when the MCCH that sends second component carrier wave correspondence changes information, and adopt Radio Network Temporary Identifier indication second component carrier wave with carrier wave indicative character; Second indicating device 110 is used for when the MCCH that sends second component carrier wave correspondence changes information, adopts carrier wave indication information indication second component carrier wave.
Preferably, first indicating device 108 also is used to adopt self-defining multicast carrier indication Radio Network Temporary Identifier value indication second component carrier wave; Second indicating device 110 also is used for adopting and strides carrier dispatching Radio Network Temporary Identifier value indication second component carrier wave, perhaps, adopts multicast Radio Network Temporary Identifier and carrier wave indication information indication second component carrier wave.
In specific implementation process, when base station 10 adopts the descending control information format that has the wireless network temporary sign of carrier wave indicative character or carry the carrier wave indication information to determine that multicast control channel to be sent changes the pairing component carrier of information on selected component carrier, be by defining a kind of carrier wave indication Radio Network Temporary Identifier value CI-RNTI or realizing by the carrier wave indication information that carries among the DCIformat 1C.
In above-mentioned transmission system, second indicating device 110 can a kind of being specifically designed to of definition indicate MCCH to change the carrier wave indication signaling of the pairing component carrier of information in the descending control information format (for example, DCI format 1C) that carries MCCH change information;
In specific implementation process, (for example carry descending control information format that corresponding multicast control channel changes information, DCI format 1C) the carrier wave indication information that carries in, can be carried on MCCH and (for example change the information bit position, 8 bits) the predetermined bit position (for example in, 3 bits), perhaps, be carried on and remove MCCH among the DCI format 1C and (for example change behind the information bit position predetermined bit position in the remaining bits, 3 bits), perhaps, be carried in the CRC scrambler of descending control information format 1C;
Preferably, in DCI format 1C, remove MCCH and change that the remaining bits position is the reserved bit position behind information and the carrier wave indication information.
Wherein, it is identical to carry the amount of bits that the DCI format 1C of MCCH when changing the first component carrier bearing system information, random access information, call information in amount of bits that the DCI format 1C of information comprises and the correlation technique comprise; Carrying MCCH, to change the amount of bits that DCI format 1C that first component carrier in amount of bits that the DCI format 1C of information comprises and the correlation technique carries the Downlink Control Information of a streams of code words Physical Shared Channel comprises identical.
In above-mentioned transmission system, the different carrier multicast control channel that base station 10 sends on same carrier wave changes the DCI of information by using different scramblers to come scrambling CRC to the PDCCH that carries corresponding DCI, thereby, distinguish the DCI that the different carrier multicast control channel changes information.Distribute a carrier wave indication Radio Network Temporary Identifier value (Multicast-Carrier indicator-RadioNetwork Temporary Identifier for each component carrier that needs in the sub-district to be striden carrier dispatching, abbreviate M-CI-RNTI as), the PDCCH that carries the DCI of the corresponding multicast control channel change of each carrier wave information uses the scrambler of each carrier wave correspondence to come scrambling CRC;
In specific implementation process, the CRC that carries the DCI format 1C of carrier wave indication information and multicast control channel change information adopts and strides carrier dispatching Radio Network Temporary Identifier value, perhaps adopt M-RNTI and carrier wave indication information (CI) scrambling, wherein, striding carrier dispatching Radio Network Temporary Identifier value is disposed by signaling, do not carry the carrier wave indication information, the CRC that only carries the DCI format 1C of multicast control channel change information adopts the M-RNTI scrambling, in other words, for end side, for R9 version UE, the base station is when sending MCCH modification information, the CRC that carries the DCI format 1C of MCCH change information adopts the M-RNTI scrambling, for R10 version or R10 with adjustment of the printing plate UE, the base station is carried CRC that MCCH changes the DCI format 1C of information and is adopted one of following mode scrambling: adopt the scrambling of multicast carrier indication Radio Network Temporary Identifier value when sending MCCH and revise information; The scrambling of carrier dispatching Radio Network Temporary Identifier value is striden in employing; Adopt multicast Radio Network Temporary Identifier value and the scrambling of carrier wave indication information; Adopt the scrambling of multicast Radio Network Temporary Identifier value.
Wherein, with adjustment of the printing plate UE, when UE is arranged in R9 version network, the CRC of descending control information format 1C adopts the scrambling of multicast Radio Network Temporary Identifier value for R10 version or R10; With the adjustment of the printing plate subscriber equipment, when UE is arranged in R10 version or R10 with the adjustment of the printing plate network, when the first deal carrier wave was identical with the second deal carrier wave, the CRC of descending control information format 1C can adopt the scrambling of multicast Radio Network Temporary Identifier value for R10 version or R10; When UE is arranged in R10 version or R10 with the adjustment of the printing plate network, when the first deal carrier wave was different with the second deal carrier wave, the CRC of descending control information format 1C adopted and strides the value scrambling of carrier dispatching Radio Network Temporary Identifier or adopt multicast Radio Network Temporary Identifier value and scrambling of carrier wave indication information or the scrambling of employing multicast carrier indication Radio Network Temporary Identifier value.
Preferably, base station 10, when the MCCH that also is used on first component carrier sending the second component carrier wave correspondence that is same as first component carrier changes the send mode of information, adopt multicast Radio Network Temporary Identifier value that the CRC of descending control information format 1C is carried out scrambling.
Fig. 3 is that MCCH changes the message transmission schematic diagram of transmission of Information system according to the preferred embodiment of the invention.As shown in Figure 3, this process mainly comprises following processing (step S302-step 306):
Step S302: the base station 10 in this transmission system is selected first component carrier of multicast control channel change information to be sent;
Step S304: base station 10 sends multicast control channel to be sent to user equipment (UE) and changes information on the first selected component carrier, wherein, on selected component carrier, utilize have the carrier wave indicative character Radio Network Temporary Identifier (for example, M-CI-RNTI) or the carrier wave indication information that carries determine that multicast control channel to be sent changes the pairing component carrier of information, what perhaps, multicast control channel changed the pairing component carrier of information is exactly the selected component carrier that sends;
Step S306: subscriber equipment 20 receives the 10 multicast control channels change information that send from the base station on the first selected component carrier, utilize wireless network temporary sign or carrier wave indication information with carrier wave indicative character to distinguish the component carrier that this multicast control channel changes the information correspondence.
According to the embodiment of the invention, also provide a kind of MCCH to change the transmission of Information method.
Fig. 4 is the flow chart that changes the transmission of Information method according to the MCCH of the embodiment of the invention.As shown in Figure 4, this transmission method mainly comprises following processing (step S402-step S404):
Step S402: base station 10 is selected first component carrier in multiple component carriers; And
Step S404: base station 10 changes message transmission to subscriber equipment 20 with the MCCH of second component carrier wave correspondence on first component carrier, wherein, the second component carrier wave is same or different from first component carrier.
Said system can realize that multicast control channel changes the information dynamic transmission under the multiple component carriers scene, and realizes that 20 pairs of these multicast control channels of subscriber equipment change correctly obtaining of information.
Preferably, base station 10 is by selected first component carrier of one of following mode at least:
(1) according to the selected component carrier of high-level signaling indication;
(2) unique carrier wave or unique related carrier wave in the Physical Downlink Control Channel component carrier collection of selected subscriber equipment;
(3) concentrate selected at random component carrier from the physical downlink control channel PDCCH component carrier;
(4) select resident carrier wave as first component carrier.
The specific descriptions of first to fourth selecting apparatus that the specific descriptions of aforesaid way can comprise referring to base station in the transmission system.
By above-mentioned processing, can solve and adopt which or which component carrier to send the problem that multicast control channel changes information.
Preferably, the base station comprises on first component carrier MCCH change information of second component carrier wave correspondence being transmitted: Radio Network Temporary Identifier (RNTI) with carrier wave indicative character is adopted or by carrier wave indication information indication second component carrier wave in the base station on first component carrier.
Preferably, Radio Network Temporary Identifier comprises: self-defining multicast carrier indication Radio Network Temporary Identifier value.
By above-mentioned processing, can solve the multicast control channel change information to be sent problems such as multicast control channel change information of how on selected carrier wave, indicating for which component carrier.
In specific implementation process, among the step S404, on selected component carrier, utilize the RNTI or the carrier wave indication information of redetermination to determine that multicast control channel to be sent changes the step of the pairing component carrier of DCI of information, can a kind ofly have the wireless network temporary sign CI-RNTI of carrier wave indicative character or determine the pairing component carrier of multicast control channel change information to be sent by defining by the carrier wave indication information.
By above-mentioned processing, adopt M-CI-RNTI and new carrier wave indication information to indicate the carrier wave of the institute's multicast control channel that carries change information correspondence, make terminal correctly to receive.Thereby can be implemented in and send the Downlink Control Information that other carrier wave multicast control channels change information on the carrier wave, thereby multicast control channel changes the problem of obtaining and the dynamic transmission of information under the solution carrier aggregation scene.
Below respectively the scheme that adopts M-CI-RNTI and adopt the carrier wave indication information to indicate is described.
(1) adopt M-CI-RNTI to indicate
When the component carrier of carrier dispatching is striden in existence in the sub-district, dispose different M-CI-RNTI by high-level signaling to each component carrier of being striden carrier dispatching, select in the RNTI numerical value that the value of this M-CI-RNTI can be reserved from the LTE system, promptly comprise reserved value FFF3～FFFC, different component carriers has different M-CI-RNTI values, does not conflict with the RNTI of other kinds.Perhaps, determine carrier wave indication Radio Network Temporary Identifier value according to the component carrier index of Radio Network Temporary Identifier and MCCH change information correspondence, for example: M-CI-RNTI=M-RNTI+CI;
When the MCCH change information of component carrier B sends on this carrier wave B, the CRC that the MCCH that carries component carrier B changes the DCI format 1C of information directly uses the M-RNTI scrambling, when the DCI of the MCCH of component carrier B change information does not send on this carrier wave B, for example, when sending on utilizing the selected component carrier A of above-mentioned four kinds of modes, the MCCH that carries component carrier B changes the CRC of DCI format 1C of information with the M-CI-RNTI scrambling of component carrier B.
UE reaches the purpose that the multicast control channel of distinguishing different component carriers changes information by descrambling verification DCI.
Wherein, the DCI format 1C with the M-CI-RNTI scrambling is positioned at the common search space.
(2) adopt the carrier wave indication information to indicate
In specific implementation process, can in DCI format 1C, define a kind of carrier wave indication signaling that the indication multicast control channel changes the pairing component carrier of information that is specifically designed to;
Preferably, the carrier wave indication information of descending control information format 1C is carried in the bit of MCCH change information, perhaps be carried in other bits of removing MCCH change information among the descending control information format 1C, wherein, multicast control channel changes information-bearing in the bit of descending control information format 1C, perhaps, be carried in the CRC scrambler of descending control information format 1C.
In the specific implementation process, carry corresponding multicast control channel and change the carrier wave indication information that carries among the descending control information format 1C (DCI format 1C) of information, can be carried on MCCH and (for example change the information bit position, 8 bits) the predetermined bit position (for example in, 3 bits) in, perhaps, be carried on and (for example remove MCCH change information bit position among the DCI format 1C, 8 bits) the predetermined bit position (for example, 3 bits) in the remaining bits of back;
Preferably, removing the remaining bits position that MCCH changes behind information and the carrier wave indication information among the descending control information format 1C is the reserved bit position.
Preferably, when transmit the MCCH change information of second component carrier wave correspondence on first component carrier base station, the CRC of descending control information format 1C adopts and strides the scrambling of carrier dispatching Radio Network Temporary Identifier value, wherein, striding carrier dispatching Radio Network Temporary Identifier value is disposed by signaling, perhaps, the CRC of descending control information format 1C adopts multicast Radio Network Temporary Identifier value and the scrambling of carrier wave indication information.
In specific implementation process, the base station before selected first component carrier, can also comprise following processing in multiple component carriers:
(1) mode that multicast control channel MCCH changes information is determined to send according to the mode of making an appointment in the base station, wherein, the mode of making an appointment comprises: the MCCH that can only send the first component carrier correspondence on first component carrier changes information, just, on first component carrier, can not send the MCCH change information of other component carrier correspondences;
(2) a kind of send mode of two kinds of send modes is adopted in the base station by signaling message notice terminal, wherein, two kinds of send modes comprise: the MCCH that can only send the first component carrier correspondence on first component carrier changes information, just, on first component carrier, can not send the MCCH change information of other component carrier correspondences; And the MCCH that can send second component carrier wave correspondence on first component carrier changes information, and the second deal carrier wave and first component carrier can be identical or different.
Preferably, when the base station adopted the MCCH that can only send the first component carrier correspondence on first component carrier to change information, the CRC of descending control information format 1C adopted Radio Network Temporary Identifier value (being M-RNTI) scrambling.
Preferably, carrying multicast control channel, to change the amount of bits that descending control information format 1C that amount of bits that the descending control information format 1C of information comprises and first component carrier carry system information, random access information, call information comprises identical; And/or the carrying multicast control channel to change the bit stream quantity that descending control information format 1C that bit stream quantity that the descending control information format 1C of information comprises and first component carrier carry the Downlink Control Information of a streams of code words Physical Shared Channel comprises identical.
Preferably, the descending control information format 1C of carrying multicast control channel change information is arranged in the common search space.
Preferably, when the MCCH of second component carrier wave correspondence being changed message transmission to subscriber equipment, further comprising the steps of in the base station:
(1) subscriber equipment receives the MCCH change information of second component carrier wave correspondence on first component carrier;
(2) subscriber equipment determines that according to multicast carrier indication Radio Network Temporary Identifier value or carrier wave indication information this MCCH changes the pairing second component carrier wave of information.
Preferably, when subscriber equipment was R9 version subscriber equipment, the CRC of descending control information format 1C adopted the scrambling of multicast Radio Network Temporary Identifier value.
Preferably, subscriber equipment is that R10 version or R10 are with the adjustment of the printing plate subscriber equipment, when the base station adopted the MCCH that sends the second component carrier wave correspondence that is different from first component carrier on first component carrier to change the send mode of information, the CRC of descending control information format 1C adopted one of following mode scrambling: adopt the scrambling of multicast carrier indication Radio Network Temporary Identifier value; The scrambling of carrier dispatching Radio Network Temporary Identifier value is striden in employing; Adopt multicast Radio Network Temporary Identifier value and the scrambling of carrier wave indication information.
In specific implementation process, with adjustment of the printing plate UE, when UE is arranged in R9 version network, the CRC of descending control information format 1C can adopt the scrambling of multicast carrier indication Radio Network Temporary Identifier value for R10 version or R10; With the adjustment of the printing plate subscriber equipment, when UE is arranged in R10 version or R10 with the adjustment of the printing plate network, when the first deal carrier wave was identical with the second deal carrier wave, the CRC of descending control information format 1C can adopt the scrambling of multicast Radio Network Temporary Identifier value for R10 version or R10; When UE is arranged in R10 version or R10 with the adjustment of the printing plate network, when the first deal carrier wave was different with the second deal carrier wave, the CRC of descending control information format 1C adopted and strides the value scrambling of carrier dispatching Radio Network Temporary Identifier or adopt multicast Radio Network Temporary Identifier value and the scrambling of carrier wave indication information.
In specific implementation process, for R10 version or R10 with adjustment of the printing plate UE, when the base station adopted the MCCH that can only send the first component carrier correspondence on first component carrier to change information, the CRC of descending control information format 1C adopted the scrambling of multicast carrier indication Radio Network Temporary Identifier value.
Example one
This example is mainly described the component carrier that adopts the selected MCCH of transmission of high-level signaling configuration mode to change information, adopts M-CI-RNTI to carry out the scheme of scrambling indication.Be described below in conjunction with Fig. 5.
As shown in Figure 5, suppose that three carrier wave CC1, CC2, CC3 are arranged.CC3 is the expansion carrier wave, and there are 2 component carriers PDCCH CC set (component carrier collection) lining of UE, and note is made CC1, CC2.
Because expansion carrier wave CC3 does not have PDCCH,, the multicast control channel of expansion carrier wave can on other component carriers, send by the high-level signaling indication so changing information.
High-level signaling is FFFC (16 system) to the M-CI-RNTI that CC3 distributes.
When the multicast control channel that carrier wave CC3 will be expanded in the base station changed information and sent on component carrier CC2 by the high-level signaling indication, then the CRC of corresponding D CI was with M-CI-RNTI=FFFC (16 system) scrambling of expansion carrier wave CC3;
UE changes information according to the multicast control channel of high-level signaling indication blind Detecting expansion carrier wave CC3 on CC2, detects DCI format 1C in the common search space, separates CRC, verification DCI information with the M-CI-RNTI=FFFC that expands carrier wave CC3.
By above-mentioned processing, UE can obtain the change information of the multicast control channel of expansion carrier wave CC3 according to the DCI that solves.
Example two
This example is mainly described and is adopted the selected component carrier that sends multicast control channel change information of selection mode at random, adopts the descending control information format DCI format X of redetermination to indicate.Be described below in conjunction with Fig. 5.
As shown in Figure 5, suppose that three carrier wave CC1, CC2, CC3 are arranged.CC3 is the expansion carrier wave, and there are 2 component carriers PDCCH CC set (component carrier collection) lining of UE, and note is made CC1, CC2.
UE need obtain CC1, and the multicast control channel of CC2 and CC3 changes information.Then the multicast control channel of UE blind Detecting CC1 on component carrier CC1 changes information, the multicast control channel of blind Detecting CC2 changes information on component carrier CC2, on the carrier wave of component carrier collection, detect, for example, the multicast control channel of blind Detecting expansion carrier wave CC3 changes information on CC1 and CC2.
The base station utilizes high-level signaling to change the CRC of the DCI of information with the multicast control channel of M-CI-RNTI=FFF4 (16 system) scrambling expansion carrier wave CC3 to the UE configuration.
When the multicast control channel of UE blind Detecting expansion carrier wave CC3 on the carrier wave CC1 of component carrier collection and CC2 changes the DCI of information, with M-CI-RNTI=FFF4 (16 system) CRC is carried out descrambling, verification DCI information is understood corresponding information according to the information content of the DCI format 1C that includes the carrier wave indication information then.
The component carrier that changes the information correspondence according to the indication of the carrier wave in DCI format 1C CI information acquisition MCCH is CC3.Determine the change of the multicast control channel of CC3 then according to the multicast control channel change information in the DCI format 1C.
In sum, pass through the above embodiment of the present invention, the multicast control channel MCCH that provides changes the transmission of Information scheme, can solve and how indicate the multicast control channel change information that is sent on selected carrier wave is the multicast control channel change information of which component carrier, so that user equipment (UE) can be discerned, the multicast control channel that accurately obtains each component carrier changes information.By the selected component carrier that sends, and accurately indicate multicast control channel change information, just can be implemented in and send the Downlink Control Information that other carrier wave multicast control channels change information on the carrier wave corresponding to which component carrier; Thereby, solved the problem of obtaining of not striding carrier dispatching and striding multicast control channel change information under two kinds of carrier aggregation scenes of carrier dispatching.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with the general calculation device, they can concentrate on the single calculation element, perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in the storage device and carry out by calculation element, perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (23)
1. a multicast control channel MCCH changes the transmission of Information method, is applied under the scene of multiple component carriers, it is characterized in that, may further comprise the steps:
The base station is selected first component carrier in described multiple component carriers; And
Described base station changes message transmission to subscriber equipment with the MCCH of second component carrier wave correspondence on described first component carrier, wherein, described second component carrier wave is same or different from described first component carrier.
2. method according to claim 1 is characterized in that, described base station is by selected described first component carrier of one of following mode at least:
According to the selected component carrier of high-level signaling indication;
Unique carrier wave or unique related carrier wave in the Physical Downlink Control Channel component carrier collection of selected subscriber equipment;
Concentrate selected at random component carrier from the physical downlink control channel PDCCH component carrier;
Select resident carrier wave as described first component carrier.
3. method according to claim 1 and 2, it is characterized in that described base station comprises on described first component carrier MCCH change information of described second component carrier wave correspondence being transmitted: described base station adopts the Radio Network Temporary Identifier with carrier wave indicative character to indicate described second component carrier wave or indicate described second component carrier wave by the carrier wave indication information on described first component carrier.
4. method according to claim 3 is characterized in that, described Radio Network Temporary Identifier comprises: self-defining multicast carrier indication Radio Network Temporary Identifier value.
5. method according to claim 4, it is characterized in that, described multicast carrier indication Radio Network Temporary Identifier value is determined by one of following mode: be configured by high-level signaling, wherein, the corresponding multicast carrier of carrier wave is indicated the Radio Network Temporary Identifier value; Determine described multicast carrier indication Radio Network Temporary Identifier value according to the component carrier index of multicast Radio Network Temporary Identifier and MCCH change information correspondence.
6. method according to claim 4, it is characterized in that, use of carry the cyclic redundancy check (CRC) scrambling that described corresponding multicast control channel change the descending control information format 1C of information of described multicast carrier indication Radio Network Temporary Identifier value sending on described first component carrier.
7. method according to claim 3 is characterized in that, described carrier wave indication information is carried in the bit of descending control information format 1C, and described multicast control channel changes information-bearing in the bit of described descending control information format 1C.
8. method according to claim 7, it is characterized in that, the described MCCH that described carrier wave indication information is carried on descending control information format 1C changes in the bit of information, perhaps be carried in other bits of removing described MCCH change information among the described descending control information format 1C, perhaps, be carried in the CRC scrambler of descending control information format 1C.
9. method according to claim 8 is characterized in that, removing the remaining bits position that described MCCH changes behind information and the described carrier wave indication information among the described descending control information format 1C is the reserved bit position.
10. method according to claim 7, it is characterized in that, the CRC of described descending control information format 1C adopts and strides the scrambling of carrier dispatching Radio Network Temporary Identifier value, wherein, the described carrier dispatching Radio Network Temporary Identifier value of striding is disposed by signaling, perhaps, the CRC of described descending control information format 1C adopts described multicast Radio Network Temporary Identifier value and the scrambling of described carrier wave indication information.
11. method according to claim 1 is characterized in that, before selected first component carrier, described method also comprises in described multiple component carriers in the base station:
The base station is determined to send the mode that multicast control channel MCCH changes information according to the mode of making an appointment, and wherein, the described mode of making an appointment comprises: the MCCH that can only send the described first component carrier correspondence on described first component carrier changes information; Perhaps
Described base station notifies described terminal to adopt a kind of send mode of two kinds of send modes by signaling message, and wherein, described two kinds of send modes comprise: the MCCH that can only send the described first component carrier correspondence on described first component carrier changes information; And the MCCH that can send described second component carrier wave correspondence on described first component carrier changes information, and the second deal carrier wave and first component carrier can be identical or different.
12. method according to claim 11, it is characterized in that, when described base station adopted the MCCH that can only send the described first component carrier correspondence on described first component carrier to change information, the CRC of descending control information format 1C adopted the scrambling of multicast Radio Network Temporary Identifier value.
13. according to claim 3 or 12 described methods, it is characterized in that,
Carrying described multicast control channel, to change the amount of bits that descending control information format 1C that amount of bits that the descending control information format 1C of information comprises and described first component carrier carry system information, random access information, call information comprises identical; And/or
It is identical to carry the bit stream quantity that descending control information format 1C that bit stream quantity that descending control information format 1C that described multicast control channel changes information comprises and described first component carrier carry the Downlink Control Information of a streams of code words Physical Shared Channel comprises.
14., it is characterized in that the descending control information format 1C that carries described multicast control channel change information is arranged in the common search space according to claim 3 or 12 described methods.
15. according to each described method in the claim 4 to 10, it is characterized in that, when in described base station the MCCH of second component carrier wave correspondence being changed message transmission to described subscriber equipment, further comprising the steps of:
Described subscriber equipment receives described second component carrier wave correspondence on described first component carrier MCCH changes information;
Described subscriber equipment determines that according to described multicast carrier indication Radio Network Temporary Identifier value or described carrier wave indication information this MCCH changes the pairing described second component carrier wave of information.
16., it is characterized in that when described subscriber equipment was R9 version subscriber equipment, the CRC of described descending control information format 1C adopted the scrambling of described multicast Radio Network Temporary Identifier value according to claim 3 or 12 described methods.
17. method according to claim 3 is characterized in that, when described subscriber equipment is R10 version or R10 during with the adjustment of the printing plate subscriber equipment, the CRC of described descending control information format 1C adopts one of following mode scrambling:
Adopt the scrambling of described multicast carrier indication Radio Network Temporary Identifier value; Adopt the described carrier dispatching Radio Network Temporary Identifier value scrambling of striding; Adopt described multicast Radio Network Temporary Identifier value and the scrambling of described carrier wave indication information.
18. method according to claim 12 is characterized in that, when described subscriber equipment is R10 version or R10 during with the adjustment of the printing plate subscriber equipment, the CRC of described descending control information format 1C adopts the scrambling of described multicast Radio Network Temporary Identifier value.
19. a multicast control channel MCCH changes the transmission of Information system, is applied under the scene of multiple component carriers, it is characterized in that, comprises with lower device:
The base station, be used at selected first component carrier of described multiple component carriers, and on described first component carrier, the MCCH of second component carrier wave correspondence is changed message transmission to subscriber equipment, wherein, described second component carrier wave is same or different from described first component carrier; And
Described subscriber equipment, the MCCH that is used for the described second component carrier wave correspondence of reception on described first component carrier changes information.
20. system according to claim 19 is characterized in that, described base station comprises with one of lower device:
First choice device is used for according to the selected component carrier of high-level signaling indication;
Second choice device is used for selecting unique carrier wave or unique related carrier wave in the Physical Downlink Control Channel component carrier collection of subscriber equipment;
The 3rd choice device is used for concentrating selected at random component carrier from the physical downlink control channel PDCCH component carrier;
The 4th choice device is used to select resident carrier wave as described first component carrier.
21., it is characterized in that described base station comprises with one of lower device according to claim 19 or 20 described systems:
First indicating device is used for when the MCCH that sends described second component carrier wave correspondence changes information, adopts the Radio Network Temporary Identifier with carrier wave indicative character to indicate described second component carrier wave;
Second indicating device is used for when the MCCH that sends described second component carrier wave correspondence changes information, adopts the carrier wave indication information to indicate described second component carrier wave.
22., it is characterized in that described first indicating device also is used to adopt self-defining multicast carrier indication Radio Network Temporary Identifier value to indicate described second component carrier wave according to claim 19 or 20 described systems; Described second indicating device also is used for adopting and strides carrier dispatching Radio Network Temporary Identifier value and indicate described second component carrier wave, perhaps, adopts multicast Radio Network Temporary Identifier and carrier wave indication information to indicate described second component carrier wave.
23. according to claim 19 or 20 described systems, it is characterized in that, described base station, when also being used for sending the MCCH change information of the described first component carrier correspondence on described first component carrier, employing multicast Radio Network Temporary Identifier value is carried out scrambling to the CRC of descending control information format 1C.
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| CN201010123829.2A CN101800942B (en) | 2010-02-11 | 2010-02-11 | MCCH changes transmission method and the system of information |
| PCT/CN2010/080392 WO2011097930A1 (en) | 2010-02-11 | 2010-12-28 | Method and system for transmitting multipoint control channel change information |
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| CN201010123829.2A CN101800942B (en) | 2010-02-11 | 2010-02-11 | MCCH changes transmission method and the system of information |
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| WO (1) | WO2011097930A1 (en) |
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| WO2011097930A1 (en) * | 2010-02-11 | 2011-08-18 | 中兴通讯股份有限公司 | Method and system for transmitting multipoint control channel change information |
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| WO2011097930A1 (en) | 2011-08-18 |
| CN101800942B (en) | 2016-04-13 |
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