CN101808402A - Acquiring method and reception and transmission system of member carrier wave information - Google Patents
Acquiring method and reception and transmission system of member carrier wave information Download PDFInfo
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Abstract
The invention discloses an acquiring method and a reception and transmission system of member carrier wave information. The method comprises the step of acquiring the labels and/or the member carrier wave information of member carrier waves by a terminal through the broadcasting information or the special signaling of a system. By means of the invention, the terminal can quickly acquire the member carrier wave information of each member carrier wave by acquiring the frequency of each uplink and/or downlink member carrier wave by the terminal through the broadcasting information of the system of the member carrier waves carrying out downlink synchronization and can quickly acquire the relevant parameter of each member carrier wave, the problem that the terminal in the relevant technology can not acquire the parameters of all the uplink/downlink member carrier waves is solved, the signaling expense of the carrier wave information is effectively saved, and the invention is beneficial to carrying out resource distribution on the terminal during dispatching.
Description
Technical field
The present invention relates to the communications field, and especially, relate to a kind of acquisition methods, and receive-transmit system of member carrier information of member carrier information.
Background technology
The Long Term Evolution of evolution (Long Term Evolution-Advanced, abbreviating LTE-A as) system is third generation partner program (3rd Generation Partnership Project, abbreviate 3GPP as) Long Term Evolution (Long Term Evolution, abbreviate LTE as) evolution system of future generation of system, the carrier wave that this system will adopt the mode of carrier aggregation (Carrier Aggregation) that several bandwidth are met certain requirements carries out polymerization with the higher bandwidth of support, and then obtains higher data rate.
Under the mode of this carrier aggregation, each carrier wave that is aggregated is called a member carrier (component carrier).As shown in Figure 1, the carrier wave of polymerization can be a up-link carrier, it also can be descending carrier, each member carrier is made up of the experimental process carrier wave, member carrier can be continuous on frequency band, also can be discontinuous (that is, the interval on the member carrier frequency domain can for 0 or greater than 0), the subcarrier number that each member carrier comprises can be by the amount of bandwidth and the decision of the frequency interval between the subcarrier of this member carrier.
There are two types in the frame structure of 3GPP LTE system, that is, and and Type 1 and Type 2.Wherein, Type 1 frame structure (promptly, frame structure shown in Figure 2) can be applicable to mode of frequency division duplexing (Frequency division duplex, abbreviate FDD as), Type 2 frame structures (promptly, frame structure shown in Figure 3) can be applicable to TDD mode (Time division duplex abbreviates TDD as).
As shown in Figures 2 and 3, in the LTE frame structure, the radio frames of a 10ms is divided into the field of two 5ms, and each field is made up of the subframe of 5 1ms.(special subframe among the Type 2 is by descending pilot frequency time slot (Downlink Pilot Time Slot except the special subframe of Type2 frame structure; DwPTS), protection interval (Guard Period; GP) and UpPTS (Uplink Pilot Time Slot; uplink pilot time slot) these 3 special time slots are formed; the length of these 3 time slots can be joined; but the length overall of these 3 time slots is fixed as 1ms) outside, other subframe all is made up of the time slot of two 0.5ms.
In the LTE frame structure, on one/duration of descending symbol is 66.7us, on each/all can attach a Cyclic Prefix (Cyclic Prefix abbreviates CP as) before the descending symbol.Defined two kinds of Cyclic Prefix among the LTE, that is, and regular circulation prefix (Normal CP) and extended cyclic prefix (Extended CP).For length is the regular circulation prefix of 5.21us and 4.69us, and time slot comprises on 7/descending symbol.Wherein, first symbol cyclic prefix length is 5.21us, and the circulating prefix-length of all the other 6 symbols is 4.69us; For length is the extended cyclic prefix of 16.67us, and time slot comprises on 6/descending symbol.
In Type 2 frame structures, subframe 0,5 and DwPTS are used for downlink transfer all the time, and subframe 2 and UpPTS are used for uplink all the time.When 2 downstream-to-upstream transfer points were arranged in the 10ms, subframe 7 also was used for uplink.It is to be used for uplink that other subframe is decided by the uplink and downlink configuration, still is used for downlink transfer.Present uplink and downlink proportional arrangement set is as shown in table 1, has 7 kinds of uplink and downlink configurations.In table 1, subframe, S that subframe, the U that D represents to be used for downlink transfer represents to be used for uplink represent special subframe, have comprised DwPTS, GP and UpPTS.And different frequency resources is adopted in Type 1 frame structure up-downgoing, so the number of sub frames of up-downgoing is always identical.
Table 1, the set of LTE TDD up-downgoing proportional arrangement
In order to keep the backwards compatibility of LTE-A system, the LTE-A system is in the design that will prolong aspect the frame structure parameter with LTE, so the FDD of LTE-A system and TDD dual-mode will adopt the frame structure of Type 1 and Type 2 respectively.Simultaneously, LTE-A and LTE be the same, and also will to adopt the frequency interval between the subcarrier be 15kHz, and for all working frequency range, channel raster (Channel raster) all is 100kHz, and the centre frequency of each carrier wave all is the integral multiple of 100kHz like this.
Working frequency range and the raster size that can use according to present LTE system, the centre frequency of LTE system uplink and descending carrier can be by Universal Mobile Telecommunications System wireless access absolute RF channel number (Evolved-Universal MobileTelecommunication System Radio Access (E-UTRA) the Absolute RadioFrequency Channel Number of standardized evolution, abbreviate EARFCN as) next unique appointment, as shown in table 2, at present the LTE system can with working frequency range have 40, wherein, frequency range 33～40 is TDD system used (so the value of its up-downgoing EARFCN is identical), and it is used that other frequency range can be FDD.
According to the value of EARFCN, the centre frequency of carrier wave can be passed through the unique appointment of formula F C=Flow+0.1 (EARFCN-NOffset).In like manner, the LTE-A system also can come each carrier wave of unique appointment centre frequency of (comprising each uplink member carrier and each downlink member carrier) by standardized EARFCN.
Table 3, EARFCN list of values
Under tdd mode, up-downgoing should be shared same frequency resource, so obviously only need just can know the centre frequency of up-link carrier by the centre frequency of descending carrier.In addition, under the fdd mode, the difference of the centre frequency that the centre frequency of up-link carrier also can be by descending carrier centre frequency and up-link carrier is obtained, and this just need carry out standardization to up-downgoing centre carrier frequency difference.
At present, host system message block in the broadcast of LTE (Master InformationBlock, abbreviate MIB as) in comprised the bandwidth information of descending carrier, but do not need to provide the center frequency information of descending carrier, be the EARFCN value, but obtain the center frequency information of descending carrier by cell search process; System information block 2 in the broadcast of LTE (System Information Block 2, abbreviate SIB2 as) in can comprise the center frequency information of up-link carrier bandwidth information and up-link carrier, the terminal of LTE just can be obtained the center frequency information and the bandwidth information of the working frequency range of LTE system like this.Following 6 kinds of bandwidth: 1.4MHz, 3MHz, 5MHz, 10MHz, 15MHz and 20MHz have been defined among the LTERelease-8 at present.
LTE-Advanced (Further Advancements for E-UTRA) is the evolution version of LTE.Except that satisfying or surpassing 3GPP TR 25.913: all related needs of " Requirements for EvolvedUTRA (E-UTRA) and Evolved UTRAN (E-UTRAN) ", also will meet or exceed the demand of the IMT-Advanced of ITU-R proposition.
Wherein, the demand for LTE Release-8 backward compatibility is meant: the terminal of LTE Release-8 can be worked in the network of LTE-Advanced, and the terminal of LTE-Advanced can be worked in the network of LTE Release-8.In addition, LTE-Advanced should be able to support the spectrum aggregating of different sizes, goes up work at the frequency spectrum resource wideer than LTE Release-8 (for example, the continuous frequency spectrum resource of 100MHz), to reach higher performance and target peak speed.Because the LTE-Advanced network needs to insert LTE user, so its operational frequency bands need cover present LTE frequency band, still, has not had the spectral bandwidth of assignable continuous 100MHz on this frequency range.So LTE-Advanced need get up to form the operable big bandwidth resources of LTE-Advanced with the several one-tenth sub-carrier with one of 6 kinds of LTE bandwidth of operation (Component carrier) polymerizations that are distributed on the different frequency range.
Consider compatibility with LTE Release-8, each member carrier of LTE-Advanced may need to satisfy and can insert LTE user, this just allows the terminal of LTE can select arbitrary downlink member carrier synchronous, and reads the center frequency information and the bandwidth information of uplink member carrier of the downlink member carrier pairing of LTE terminal and its selection on this member carrier.For the terminal of LTE-Advanced, different with traditional LTE system (on/descending carrier only be) terminal, the terminal of LTE-Advanced can insert all up-downgoing member carriers.
But, how to obtain the centre frequency and the isoparametric problem of bandwidth information of all up-downgoing member carriers at terminal, effective solution is not proposed at present as yet.
Summary of the invention
Consider the terminal that exists in the correlation technique can not obtain all up-downgoing member carriers centre frequency problem and make the present invention, for this reason, main purpose of the present invention is to provide a kind of acquisition methods, and receive-transmit system of member carrier information of member carrier information.
According to an aspect of the present invention, provide a kind of acquisition methods of member carrier information, this method can be applicable to senior long evolving system.
Acquisition methods according to member carrier information of the present invention comprises: terminal is obtained the sign and/or the member carrier information of member carrier by system broadcast message or dedicated signaling.
Wherein, the member carrier information of member carrier can comprise following one of at least: the center frequency information of member carrier, the bandwidth information of member carrier.
And, above-mentioned member carrier information processing of obtaining member carrier can comprise: terminal is obtained the centre frequency of a member carrier in all member carriers by search, and according to centre frequency receiving system broadcast or dedicated signaling on a member carrier, and obtain the member carrier information of other member carriers according to system broadcast message or dedicated signaling.
Wherein, the bandwidth information of the downlink member carrier at terminal receiving system broadcast place is carried in the Master Information Block in the system broadcast message.
On the one hand, in system is under the situation of frequency division duplex system, behind the center frequency information of the downlink member carrier at receiving system broadcast place, this method may further include: terminal is obtained the center frequency information and the bandwidth information of the uplink member carrier of this downlink member carrier correspondence by system broadcast message.
And terminal can be configured to downlink member carrier its downstream frequency, and uplink member carrier is configured to its upstream frequency.
And, in system is under the situation of frequency division duplex system, and the member carrier information of other member carriers that terminal is obtained is downlink member carrier and other all uplink member carrier outside the corresponding uplink member carrier and the member carrier information of downlink member carrier at terminal receiving system broadcast or dedicated signaling place.
On the other hand, be under the situation of tdd systems in system, the center frequency information of other member carriers that terminal is obtained is the member carrier information of other all uplink member carrier or downlink member carrier.
Wherein, the member carrier information of above-mentioned other member carriers is carried in the newly-increased system information block.And the centre frequency of other member carriers is represented by the Universal Mobile Telecommunications System wireless access absolute RF channel number of evolution.
Preferably, the carrier wave in the downlink member carrier has the numbering of specifying or has by pre-defined rule and obtains sign in other member carriers.
Preferably, pre-defined rule is for according to the serial number of the member carrier that carries in system broadcast message or the dedicated signaling sign as member carrier.
In addition, after terminal had been obtained the sign and/or member carrier information of whole member carriers, this method can further include: terminal is according to the member carrier of the identification index correspondence that obtains.
Preferably, above-mentioned terminal is senior long evolving system terminal.
A kind of receive-transmit system of member carrier information is provided according to a further aspect in the invention.
Receive-transmit system according to member carrier information of the present invention comprises: the base station is used for by system broadcast message or dedicated signaling the sign and/or the member carrier information of member carrier being notified to terminal; Terminal is used to receive system broadcast message or dedicated signaling from the base station, and therefrom obtains the sign and/or the member carrier information of member carrier.
By means of technique scheme of the present invention, make the system broadcast message of the member carrier of terminal by carrying out down-going synchronous obtain each member carrier information up and/or downlink member carrier, make terminal can obtain the relevant parameter of each member carrier fast, solve terminal in the correlation technique and can not obtain the problem of the parameter of all up-downgoing member carriers, effectively save the signaling consumption of carrier information, help when dispatching, terminal to be carried out resource allocation.
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 schematic diagram of carrier aggregation in the correlation technique;
Fig. 2 is the schematic diagram of Type 1 frame structure in the correlation technique;
Fig. 3 is the schematic diagram of Type 2 frame structures in the correlation technique;
Fig. 4 is the flow chart according to the acquisition methods of the member carrier information of the inventive method embodiment;
Fig. 5 is the process chart in actual applications according to the acquisition methods of the member carrier information of the inventive method embodiment;
Fig. 6 is the schematic diagram according to member carrier in the FDD system of the inventive method embodiment;
Fig. 7 is the schematic diagram according to member carrier in the TDD system of the inventive method embodiment;
Fig. 8 is the schematic diagram that carries out carrier index according to the acquisition methods of the member carrier information of the inventive method embodiment on member carrier basis shown in Figure 6;
Fig. 9 is the receive-transmit system of the member carrier information of system according to the invention embodiment.
Embodiment
Functional overview
Can not obtain the problem of the parameter of all up-downgoing member carriers at terminal in the correlation technique, the present invention proposes terminal and (also can be described as subscriber equipment (User Equipment, abbreviate UE as)) system broadcast message of member carrier by carrying out down-going synchronous obtains each member carrier information up and/or downlink member carrier, member carrier information can comprise a plurality of parameters of member carrier, for example, the center frequency information and/or the bandwidth information that comprise member carrier, also can comprise that uplink random inserts (RACH) channel information, member carrier information such as paging channel, so just make terminal can obtain the relevant parameter of each member carrier (for example, obtaining the centre frequency (also can be described as center frequency point) of member carrier) fast.Describe the specific embodiment of the present invention in detail below in conjunction with accompanying drawing.
Method embodiment
In the present embodiment, provide a kind of acquisition methods of member carrier information, this method is applied in the LTE-A system.
As shown in Figure 4, the acquisition methods according to the member carrier information of present embodiment comprises step S402 and step S404.
Concrete processing procedure shown in Fig. 4 is as follows:
Step S402, terminal is obtained the sign and/or the member carrier information of member carrier by system broadcast message or dedicated signaling;
Step S404, terminal is according to the member carrier of the identification index correspondence that obtains.
In step S402, terminal can be obtained the centre frequency of a member carrier in all member carriers by search, and go up receiving system broadcast or dedicated signaling at this member carrier (can think that this member carrier is the member carrier that terminal is carried out down-going synchronous), and obtain the member carrier information of other member carriers according to system broadcast message or dedicated signaling according to centre frequency.
Wherein, the bandwidth information of the downlink member carrier at terminal receiving system broadcast place is carried in the Master Information Block in the system broadcast message.
On the one hand, in system is under the situation of frequency division duplex system, in system is under the situation of frequency division duplex system, behind the center frequency information of the downlink member carrier at receiving system broadcast place, terminal can be obtained the center frequency information and the bandwidth information (preferably, can obtain the center frequency information and the bandwidth information of this uplink member carrier by the system information block in the system broadcast message 2) of the uplink member carrier of this downlink member carrier correspondence by system broadcast message.And, to consider compatiblely mutually with existing system, terminal can be configured to this downlink member carrier its downstream frequency, and this uplink member carrier is configured to its upstream frequency.
In addition, in frequency division duplex system, the member carrier information of other member carriers that terminal is obtained is downlink member carrier and other all uplink member carrier outside the corresponding uplink member carrier and the member carrier information of downlink member carrier at terminal receiving system broadcast or dedicated signaling place.
On the other hand, be under the situation of tdd systems in system, the center frequency information that terminal can be by other member carriers of obtaining is the center frequency information of other all uplink member carrier or downlink member carrier.
Preferably, carrying out the center frequency information of other member carrier outside the downlink member carrier of down-going synchronous and bandwidth information can be carried in the newly-increased system information block (can with should newly-increased block of information be called SIB-LTE-A).
Alternatively, the centre frequency of uplink member carrier is represented by the Universal Mobile Telecommunications System wireless access absolute RF channel number of evolution in other member carriers.
Alternatively, the centre frequency of downlink member carrier is represented by the Universal Mobile Telecommunications System wireless access absolute RF channel number of evolution or is represented (can mark expression by the two difference) by the centre frequency of standardized uplink member carrier and the centre frequency of downlink member carrier in other member carriers.
And, carrier wave in other member carriers in the downlink member carrier can have predetermined number, promptly, transmitting terminal (base station) can be numbered downlink member carrier according to predetermined way, with the sign of this numbering as member carrier, so that carry out the distribution of resource, terminal just can be by numbering the member carrier information that acquisition is authorized like this.Preferably, transmitting terminal can just be numbered according to EARFCN value size or according to the frequency of centre frequency, for example, and can be little of being numbered greatly or from big to small from the EARFCN value; In addition, can also be with the serial number of the member carrier that carries in system broadcast message or the dedicated signaling directly as the sign of each member carrier.
Fig. 5 is the acquisition methods process chart in actual applications according to the member carrier information of present embodiment.As shown in Figure 5, specifically can comprise following processing:
Step S502, the terminal of LTE/LTE-A can at first obtain a downlink member carrier by the down-going synchronous of initial cell search procedure, and obtains the centre frequency of this member carrier;
Step S504, the bandwidth information of this downlink member carrier of acquisition in the host system message block (MIB) that this downlink member carrier that obtains carries;
Step S506, the terminal of LTE/LTE-A is on the system information block 2 of this downlink member carrier, obtain the center frequency information and the bandwidth information of this available uplink member carrier, for the TDD system (for example, the TDD sub-district), this message is default not to be sent out (promptly, skips steps S506), because the TDD system up-downgoing band resource time-division shares, so the centre frequency consistent (terminal has just obtained the information of up work carrier wave when obtaining the centre frequency of downlink member carrier like this) of the centre frequency of downlink member carrier and uplink member carrier;
Step S508, the base station is by the centre frequency and the bandwidth of other member carriers of the terminal current area of broadcasting or proprietary signaling LTE-A, and to all member carrier numberings, the terminal of LTE-A just can obtain other descending and centre frequency and bandwidth information uplink member carrier by the distinctive system broadcast message of acquisition LTE-A (this part message is that the LTE terminal is not read) of this downlink member carrier; Preferably, can in LTE-A, introduce newly-increased system information block and broadcast the distinctive system message of above-mentioned LTE-A;
Step S510, the base station can be used resource allocation by the numbering of subcarrier in member carrier numbering and the member carrier to terminal, thus the subcarrier on all member carriers of freedom and flexibility ground polymerization.
By above-mentioned processing, can make the LTE-A terminal obtain the centre frequency and the bandwidth information of all member carriers fast, when scheduling, save the signaling consumption of notice member carrier information again simultaneously.
Describe the present invention in detail below in conjunction with instantiation.
Below in the example that will describe, establish and have sub-district CELL_LTE_A in the LTE-A system, be made up of M uplink member carrier and N downlink member carrier, the sub-district is numbered corresponding member carrier up and down respectively.Wherein (F_UL_m BW_UL_m) represents the centre frequency of m uplink member carrier and the bandwidth information of correspondence, (F_DL_n, BW_DL_n) bandwidth information of the center frequency point of n downlink member carrier of expression and correspondence.MIB_n represents the host system message block that n downlink member carrier sends, and SIB2_n represents the system information block 2 that n downlink member carrier sends, and SIBA_n represents that n downlink member carrier sends the system information block of the distinctive system message of LTE-A.Centre frequency EARFCN value representation.
Example 1:
Suppose that CELL_LTE A is the sub-district of fdd mode, as shown in Figure 6, wherein, M=2, N=3.MIB_1, MIB_2 and MIB_3 carry place downlink member carrier bandwidth BW _ DL_1, BW_DL_2 and BW_DL_3 respectively; SIB2_1, SIB2_2 and SIB2_3 carry the center frequency point information and corresponding uplink member carrier bandwidth information F_UL_1 and BW_UL_1, F_UL_1 and BW_UL_1 and the F_UL_2 and the BW_UL_2 of place uplink member carrier respectively.
On SIBA, send the center frequency point information of adjacent downlink member carrier, wherein, descending frequency F_DL_2 of the last transmission of SIBA_1 and F_DL_3; Descending frequency F_DL_1 of the last transmission of SIBA_2 and F_DL_3; Descending frequency F_DL_1 of the last transmission of SIBA_3 and F_DL_2.The UE start searches out the center frequency point F_DL_2 of downlink member carrier 2 when searching for; By reading in the MIB_2 on the frequency F_DL_2, the bandwidth of the downlink member carrier 2 that UE obtains is BW_DL_2; By reading the SIB2_2 on the frequency F_DL_2, UE obtains center frequency point and the bandwidth information F_UL_1 and the BW_UL_1 of uplink member carrier.
The UE of common LTE just can be considered as downlink member carrier 2 and uplink member carrier 1 the up-downgoing carrier wave of a LTE sub-district, and in the last business that can normally begin LTE, the base station is being given and can used to the UE of LTE the scheduling of resource of downlink member carrier 2 and uplink member carrier 1 by the descending control command of LTE.The UE of LTE-A goes up SIBA_2 by reading frequency F_DL_2, obtains the center frequency point of downlink member carrier.Be respectively the F_DL_1 of member carrier 1 correspondence and the F_DL_3 of member carrier 3 correspondences.The UE of LTE-A is by reading MIB, bandwidth BW _ DL_1 that SIB2 message then can obtain downlink member carrier 1, the bandwidth BW _ DL_2 of downlink member carrier 2 and the center frequency point F_UL_2 and the bandwidth BW _ UL_2 of up member's subcarrier 2 on corresponding and the downlink member carrier 1 and 2.So far the UE of LTE-A obtains 3 downlink member subcarrier F_DL_1, F_DL_2, F_DL_3 and its corresponding bandwidth BW _ DL_1, BW_DL_2, BW_DL_3.2 uplink member carrier F_UL_1, F_UL_2 and its corresponding bandwidth BW _ UL_1, BW_UL_2.
By the ordering rule of the ascending implicit expression of the EARFCN value of center frequency point correspondence, the UE of LTE-A is respectively with the ordering of up-downgoing member carrier, corresponding uplink member carrier sign ID_UL=1,2,3 and downlink member carrier identify ID_DL=1,2.The base station can be used the UE of all up-downgoing member carrier scheduling of resource to LTE-A by comprising the member carrier sign in the descending control command of the LTE-A that downlink member carrier sends.For example, for the UE of above-described LTE-A, the base station, sends member carrier sign ID_DL=1 and the sub-carrier resources in member carrier and identifies to UE during in dispatching downlink member carrier resource in the descending control command of downlink member LTE-A.UE just can obtain the downlink resource of member carrier 1.
Example 2:
If CELL_LTEA is the sub-district of fdd mode, as shown in Figure 6, M=2 wherein, N=3.MIB_1, MIB_2 and MIB_3 carry place downlink member carrier bandwidth BW _ DL_1, BW_DL_2 and BW_DL_3 respectively.SIB2_1, SIB2_2 and SIB2_3 carry the center frequency point information and corresponding uplink member carrier bandwidth information F_UL_1 and BW_UL_1, F_UL_1 and BW_UL_1 and the F_UL_2 and the BW_UL_2 of place uplink member carrier respectively.
Then carry center frequency point information and its frequency points corresponding numbering of adjacent member carrier on the SIBA, and corresponding member carrier bandwidth information, wherein the last transmission of SIBA_1 ID_DL is respectively 2 and 3 descending frequency F_DL_2 and F_DL_3, corresponding bandwidth is BW_DL_2 and BW_DL_3, ID_UL is 2 up frequency F_UL_2 in addition, and corresponding bandwidth is BW_UL_2; The last transmission of SIBA_2 ID_DL is respectively 1 and 3 descending frequency F_DL_1 and F_DL_3, and corresponding bandwidth is BW_DL_1 and BW_DL_3, and ID_UL is 2 up frequency F_UL_2 in addition, and corresponding bandwidth is BW_UL_2; The last transmission of SIBA_3 ID_DL is respectively 1 and 2 descending frequency F_DL_1 and F_DL_2, and corresponding bandwidth is BW_DL_1 and BW_DL_2, and ID_UL is 1 up frequency F_UL_1 in addition, and corresponding bandwidth is BW_UL_1.Broadcasting on SIBA_x or UE that can be explicit for the member carrier ID that broadcasts on MIB_x and SIB2_x can be the implicit relationship of continuous dispensing by ID, the id information of inferring downlink member carrier and uplink member carrier correspondence after obtaining the id information of all adjacent member carriers.
Equidirectional member carrier ID is unique in the sub-district.The UE start searches out the center frequency point F_DL_2 of downlink member carrier 2 when searching for; By reading in the MIB_2 on the frequency F_DL_2, the downlink bandwidth of the member carrier 2 that UE obtains is BW_DL_2; By reading the SIB2_2 on the frequency F_DL_2, UE obtains center frequency point and the bandwidth information F_UL_1 and the BW_UL_1 of uplink member carrier.The UE of common LTE just can be considered as downlink member carrier 2 and uplink member carrier 1 the up-downgoing carrier wave of a LTE sub-district, and in the last business that can normally begin LTE, the base station is being given and can used to the UE of LTE the scheduling of resource of downlink member carrier 2 and uplink member carrier 1 by the descending control command of LTE.The UE of LTE-A goes up SIBA_2 by reading frequency F_DL_2, obtains the center frequency point of all member carriers, bandwidth and corresponding id information.
The base station can use to the UE of LTE-A all up-downgoing member carrier scheduling of resource by comprising the member carrier sign in giving the descending control command of LTE-A.For example: for the UE of above-described LTE-A, the base station is in the descending control command of downlink member LTE-A during in dispatching downlink member carrier resource, send sub-carrier resources in member carrier sign ID_DL=1 and the place member carrier identify to and ID_DL=3 and place member carrier in sub-carrier resources identify to UE.UE just can obtain the downlink resource of downlink member carrier 1 and downlink member carrier 3 polymerizations.
Example 3:
As shown in Figure 6, CELL_LTEA is the sub-district of fdd mode, M=2 wherein, N=3.MIB_1, MIB_2 and MIB_3 carry place downlink member carrier bandwidth BW _ DL_1, BW_DL_2 and BW_DL_3 respectively.SIB2_1, SIB2_2 and SIB2_3 carry the center frequency point information and corresponding uplink member carrier bandwidth information F_UL_1 and BW_UL_1, F_UL_1 and BW_UL_1 and the F_UL_2 and the BW_UL_2 of place uplink member carrier respectively.The UE start searches out the center frequency point F_DL_2 of downlink member carrier 2 when searching for; By reading in the MIB_2 on the frequency F_DL_2, the downlink bandwidth of the member carrier 2 that UE obtains is BW_DL_2; By reading the SIB2_2 on the frequency F_DL_2, UE obtains center frequency point and the bandwidth information F_UL_1 and the BW_UL_1 of uplink member carrier.The UE of common LTE just can be considered as downlink member carrier 2 and uplink member carrier 1 the up-downgoing carrier wave of a LTE sub-district, and in the last business that can normally begin LTE, the base station is being given and can used to the UE of LTE the scheduling of resource of downlink member carrier 2 and uplink member carrier 1 by the descending control command of LTE.UE for LTE-A reports the base station by the ability information that will support LTE-A, the base station is by the frequency of dedicated signaling with other member carriers, bandwidth and identification information are notified to UE, its bandwidth of F_DL_1 that comprises downlink member carrier ID_DL=1 is BW_DL_1, the F_DL_2 of ID_DL=2, its bandwidth is BW_DL_2, the F_DL_3 of ID_DL=3, and its bandwidth is BW_DL_3; The F_UL_1 of uplink member carrier ID_UL=1, its bandwidth is BW_UL_1, the F_UL_2 of ID_UL=2, its bandwidth is BW_UL_2.The base station can use to the UE of LTE-A all up-downgoing member carrier scheduling of resource by comprising the member carrier sign in giving the descending control command of LTE-A.For example: for the UE of above-described LTE-A, the base station is in the descending control command of downlink member LTE-A during in dispatching downlink member carrier resource, send sub-carrier resources in member carrier sign ID_DL=1 and the place member carrier identify to and ID_DL=3 and place member carrier in sub-carrier resources identify to UE.UE just can obtain the downlink resource of downlink member carrier 1 and downlink member carrier 3 polymerizations.
Example 4:
As shown in Figure 7, in this example, suppose that CELL_LTEA is the sub-district of tdd mode, wherein, M=N=3.MIB_1, MIB_2 and MIB_3 carry place downlink member carrier bandwidth BW _ DL_1, BW_DL_2 and BW_DL_3 respectively.Because the sub-district up-downgoing frequency of TDD all is the same with bandwidth, thus F_DL_1=F_UL_1, BW_DL_1=BW_UL_1; F_DL_2=F_UL_2, BW_DL_2=BW_UL_2; F_DL_3=F_UL_3, BW_DL_3=BW_UL_3;
Then carry center frequency point information and its frequency points corresponding numbering of adjacent member carrier on the SIBA, and corresponding member carrier bandwidth information, wherein the last transmission of SIBA_1 ID_DL is respectively 2 and 3 descending frequency F_DL_2 and F_DL_3, and corresponding bandwidth is BW_DL_2 and BW_DL_3; The last transmission of SIBA_2 ID_DL is respectively 1 and 3 descending frequency F_DL_1 and F_DL_3, and corresponding bandwidth is BW_DL_1 and BW_DL_3; The last transmission of SIBA_3 ID_DL is respectively 1 and 2 descending frequency F_DL_1 and F_DL_2, and corresponding bandwidth is BW_DL_1 and BW_DL_2.
At this moment, because the sub-district is the TDD sub-district, therefore corresponding ID_UL=ID_DL does not need explicit broadcasting.Broadcasting on SIBA_x or UE that can be explicit for the member carrier ID that broadcasts on MIB_x and SIB2_x can be the implicit relationship of continuous dispensing by ID, the id information of inferring downlink member carrier and uplink member carrier correspondence after obtaining the id information of all adjacent member carriers.Equidirectional member carrier ID is unique in the sub-district.The UE start searches out the center frequency point F_DL_2 of downlink member carrier 2 when searching for; By reading in the MIB_2 on the frequency F_DL_2, the downlink bandwidth of the member carrier 2 that UE obtains is BW_DL_2; Characteristic UE according to TDD knows that also having uplink member carrier 2F_UL_2, bandwidth is BW_UL_2.The UE of common LTE just can be considered as downlink member carrier 2 and uplink member carrier 2 the LTE sub-district of a TDD, and in the last business that can normally begin LTE, the base station is being given and can used to the UE of LTE the scheduling of resource of downlink member carrier 2 and uplink member carrier 2 by the descending control command of LTE.The UE of LTE-A goes up SIBA_2 by reading frequency F_DL_2, obtains the center frequency point of all member carriers, bandwidth and corresponding id information.The base station can use to the UE of LTE-A all up-downgoing member carrier scheduling of resource by comprising the member carrier sign in giving the descending control command of LTE-A.For example: for the UE of above-described LTE-A, the base station is in the descending control command of downlink member LTE-A during in dispatching downlink member carrier resource, send sub-carrier resources in member carrier sign ID_DL=1 and the place member carrier identify to and ID_DL=3 and place member carrier in sub-carrier resources identify to UE.UE just can obtain the downlink resource of downlink member carrier 1 and downlink member carrier 3 polymerizations.
Fig. 8 is the schematic diagram that carries out carrier index according to the acquisition methods of the member carrier information of the inventive method embodiment on member carrier basis shown in Figure 6.As can be seen from the figure, according to the member carrier information and the resource allocation table that obtain, terminal not only can index child resource # 1 and the #0 on the carrier wave of downlink member carrier ID_DL=1, and can index the child resource #170 on the carrier wave of ID_DL=3.
Although before with center frequency information and bandwidth information as the member carrier information description obtain manner of member carrier information, but, those skilled in the art is to be understood that, the present invention can also carry out obtaining of other member carrier information, for example, can be used to obtain uplink random and insert member carrier information such as (RACH) channel information, paging channel.
By above-mentioned processing, make terminal can obtain parameters such as the frequency of each up and/or downlink member carrier, bandwidth, solve terminal in the correlation technique and can not obtain the problem of the parameter of all up-downgoing member carriers, effectively save the signaling consumption of carrier information, help when dispatching, terminal to be carried out resource allocation.
System embodiment
A kind of receive-transmit system of member carrier information is provided in the present embodiment.
As shown in Figure 9, the receive-transmit system according to the member carrier information of present embodiment comprises base station 10 and terminal 20.
The function of network element shown in Fig. 9 is as follows:
Terminal 20 is used to receive system broadcast message or dedicated signaling from base station 10, and therefrom obtains the sign and/or the member carrier information of member carrier.
On the one hand, in system is under the situation of frequency division duplex system, behind the center frequency information of the downlink member carrier that has obtained receiving system broadcast or dedicated signaling, terminal 20 can be by being carried at center frequency information and the bandwidth information that system information block 2 in the system broadcast message obtains uplink member carrier.And the center frequency information of other member carriers that terminal 20 can be obtained by system broadcast message is other all uplink member carrier outside downlink member carrier and the corresponding uplink member carrier and the center frequency information of downlink member carrier in the Master Information Block of system broadcast message.
On the other hand, be under the situation of tdd systems in system, the center frequency information that terminal 20 can be by other member carriers of obtaining is the center frequency information of other all uplink member carrier or downlink member carrier.
Preferably, the center frequency information of other member carrier outside the downlink member carrier of receiving system broadcast or dedicated signaling (carrying out down-going synchronous) and bandwidth information can be carried in the newly-increased system information block (block of information that should increase newly can be called SIB-LTE-A).
Alternatively, the centre frequency of uplink member carrier is represented by the Universal Mobile Telecommunications System wireless access absolute RF channel number of evolution in other member carriers.
Alternatively, the centre frequency of downlink member carrier is represented by the Universal Mobile Telecommunications System wireless access absolute RF channel number of evolution or is represented (can mark expression by the two difference) by the centre frequency of standardized uplink member carrier and the centre frequency of downlink member carrier in other member carriers.
And, carrier wave in other member carriers in the downlink member carrier has predetermined number, promptly, base station 10 can be numbered downlink member carrier according to predetermined way, with the sign of this numbering as member carrier, to carry out the distribution of resource, terminal just can be by numbering the member carrier information that acquisition is authorized like this.Preferably, base station 10 can just be numbered according to EARFCN value size or according to the frequency of centre frequency, for example, can be numbered from small to large or from big to small; Perhaps, base station 10 also can be with the direct sign as corresponding member carrier of the numbering of the member carrier in system broadcast message or the dedicated signaling.
System according to present embodiment can carry out the notice and the reception of member's carrier information equally under member carrier configuring condition shown in Figure 6, its processing procedure no longer repeats here.
In sum, by means of technique scheme of the present invention, make the system broadcast message of the member carrier of terminal by carrying out down-going synchronous obtain each frequency up and/or downlink member carrier, make terminal can obtain the member carrier information of each member carrier fast, make terminal can obtain the relevant parameter of each member carrier fast, solve terminal in the correlation technique and can not obtain the problem of the parameter of all up-downgoing member carriers, effectively save the signaling consumption of carrier information, help when dispatching, terminal to be carried out resource allocation.
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 (15)
1. the acquisition methods of a member carrier information is applied to senior long evolving system,
It is characterized in that described method comprises:
Terminal is obtained the sign and/or the member carrier information of member carrier by system broadcast message or dedicated signaling.
2. method according to claim 1 is characterized in that, the member carrier information of described member carrier comprise following one of at least: the center frequency information of described member carrier, the bandwidth information of described member carrier.
3. method according to claim 2 is characterized in that, the member carrier information processing of obtaining described member carrier comprises:
Described terminal is obtained the centre frequency of a member carrier in all member carriers by search, and on a described member carrier, receive described system broadcast message or described dedicated signaling, and obtain the member carrier information of other member carriers according to described system broadcast message or described dedicated signaling according to described centre frequency.
4. method according to claim 3 is characterized in that, the bandwidth information of the downlink member carrier at terminal receiving system broadcast place is carried in the Master Information Block in the described system broadcast message.
5. method according to claim 3 is characterized in that, is under the situation of frequency division duplex system in described system, behind the center frequency information of the downlink member carrier that receives described system broadcast message place, further comprises:
Described terminal is obtained the center frequency information and the bandwidth information of the uplink member carrier of this downlink member carrier correspondence by system broadcast message.
6. method according to claim 3 is characterized in that described terminal is configured to its downstream frequency with described downlink member carrier, and described uplink member carrier is configured to its upstream frequency.
7. method according to claim 6, it is characterized in that, in described system is under the situation of frequency division duplex system, and the member carrier information of described other member carriers that described terminal is obtained is downlink member carrier and other all uplink member carrier outside the corresponding uplink member carrier and the member carrier information of downlink member carrier that terminal receives described system broadcast message or described dedicated signaling place.
8. method according to claim 3, it is characterized in that, in described system is under the situation of tdd systems, and the center frequency information of described other member carriers that described terminal is obtained is the member carrier information of other all uplink member carrier or downlink member carrier.
9. according to claim 7 or 8 described methods, it is characterized in that the member carrier information of described other member carriers is carried in the newly-increased system information block.
10. method according to claim 9 is characterized in that, the centre frequency of described other member carriers is represented by the Universal Mobile Telecommunications System wireless access absolute RF channel number of evolution.
11., it is characterized in that the carrier wave in described other member carriers in the downlink member carrier has the numbering of appointment or has by pre-defined rule acquisition sign according to claim 7 or 8 described methods.
12. method according to claim 11 is characterized in that, described pre-defined rule is for according to the serial number of the described member carrier that carries in described system broadcast message or the described dedicated signaling sign as member carrier.
13. method according to claim 1 is characterized in that, after described terminal has been obtained the sign and/or member carrier information of described whole member carriers, further comprises:
Described terminal is according to the member carrier of the described identification index correspondence that obtains.
14., it is characterized in that described terminal is senior long evolving system terminal according to each described method in the claim 1 to 8,10,12 and 13.
15. the receive-transmit system of a member carrier information is characterized in that, comprising:
The base station is used for by system broadcast message or dedicated signaling the sign and/or the member carrier information of member carrier being notified to terminal;
Described terminal is used to receive described system broadcast message or described dedicated signaling from described base station, and therefrom obtains the sign and/or the member carrier information of described member carrier.
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| CN102958064B (en) * | 2011-08-18 | 2016-05-25 | 中国移动通信集团公司 | In carrier aggregation system, reduce the method, system and device that disturb |
| CN102724149B (en) * | 2012-05-16 | 2015-09-09 | 华为技术有限公司 | Frequency offset precompensation method, accidental access method, equipment and system |
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| CN105830491A (en) * | 2013-08-23 | 2016-08-03 | 瑞典爱立信有限公司 | Extending EARFCN value range in GERAN |
| CN105830491B (en) * | 2013-08-23 | 2020-01-21 | 瑞典爱立信有限公司 | Extending EARFCN value range in GERAN |
| CN105307237A (en) * | 2014-07-31 | 2016-02-03 | 展讯通信（上海）有限公司 | Method for identifying carrier frequency bandwidth |
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| CN107920382A (en) * | 2016-10-10 | 2018-04-17 | 中国电信股份有限公司 | Cell accessing method, terminal and system based on flexible bandwidth |
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