CN101505538A - Method and system for multi-carrier stochastic access - Google Patents
Method and system for multi-carrier stochastic access Download PDFInfo
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- CN101505538A CN101505538A CNA2009101178640A CN200910117864A CN101505538A CN 101505538 A CN101505538 A CN 101505538A CN A2009101178640 A CNA2009101178640 A CN A2009101178640A CN 200910117864 A CN200910117864 A CN 200910117864A CN 101505538 A CN101505538 A CN 101505538A
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Abstract
The invention discloses a method for random access of multiple carriers, which is applied to the condition of asymmetrical configuration of uplink and downlink carriers of an advanced long term evolution LTE-A system. The method comprises that: after receiving a leader sequence, a base station acquires a downlink component carrier corresponding to an uplink component carrier sending the leader sequence according to the frequency of the uplink component carrier and default frequency space between the uplink and downlink component carriers, sends random access channel RACH response messages on the downlink component carrier to a terminal, and sends competition resolving messages on the downlink component carrier sending the RACH response messages or the downlink component carrier agreed with the terminal to the terminal. The method can solve the problem of uncertainty of the downlink component carrier sending the RACH response messages and the competition resolving messages, and can maintain backward compatibility with LTE.
Description
Technical field
The present invention relates to digital communicating field, relate in particular to the method and system that the multicarrier under a kind of senior Long Term Evolution (Long TermEvolution Advanced abbreviates LTE-A as) system up-downgoing carrier wave symmetrical arrangements inserts at random.
Background technology
In the LTE-A system, in order to support bigger system bandwidth (reaching as high as 100MHz), and the existing standard of while backward compatibility LTE, LTE-A merges the bandwidth of LTE system and obtains bigger bandwidth, this technology is called carrier aggregation (carrier aggregation, abbreviate CA as) technology, this technology can improve senior international mobile communication (International MobileTelecommunication, abbreviating IMT-Advance as) availability of frequency spectrum of system, to alleviate frequency spectrum resource in short supply, and then optimize the utilization of frequency spectrum resource.
In the LTE system, to carry out after Cell searching and Physical Broadcast Channel (Physical broadcastchannel, be called for short PBCH) receive, terminal (User Equipment abbreviates UE as) will be set up and the linking of base station by random access procedure.Random access procedure comprises following a few step, as shown in Figure 1, at first terminal is according to (the PhysicalRandom Access Channel of the Physical Random Access Channel on the downlink component carrier of initial synchronisation, be called for short PRACH) configuration information, on up-link carrier, send targeting sequencing (Preamble, be called for short message 1 below) to the base station, base station (Evolved UMTS TerrestrialRadio Access Network NodeB, be called for short eNodeB), carrying out message 1 detects, and on downlink component carrier, send Random Access Channel (Random Access Channel, be called for short RACH) response message (following abbreviation message 2), after terminal was correctly received message 2, sending first on the upstream components carrier wave, the uplink scheduling data (comprised the identification information of terminal etc., be called for short message 3 below), after the request that terminal sends is received in the base station, return competition and solve message (below abbreviate message 4 as), if competition solves successfully, then random access procedure is finished, otherwise inserts at random again.
In the LTE-A system, up-downgoing component carrier (component carrier, be called for short CC) unsymmetric structure is a very important application scenarios, wherein especially based on the downlink component carrier number more than the upstream components carrier number.At this moment, when terminal detects synchronizing channel (SynchronizeChannel at certain downlink component carrier, be called for short SCH) and receive PBCH after, according to the PRACH configuration information of on this component carrier, receiving, terminal sends message 1 on the upstream components carrier wave, after receive the base station, send message 2, because the base station can't know terminal synchronizes is on which downlink component carrier, so just there is the downlink component carrier uncertain problem that sends message 2, same, receive message 2 in terminal, send message 3 on the upstream components carrier wave, also there is such problem in the message 4 of base station feedback.At this problem, each company has provided solution separately.
When one class scheme base station disposes different PRACH on different downlink component carriers/frequently/the sign indicating number resource.Like this, terminal sends message 1 according to the PRACH parameter that receives downlink component carrier to the base station, since the PRACH of different downlink component carrier correspondences the time/frequently/sign indicating number resource difference, the base station can be known the downlink component carrier of terminal synchronizes in view of the above, and on this downlink component carrier, send message 2, terminal is carried out the reception of message 2 on this downlink component carrier simultaneously, and the message 4 of back also sends on this downlink component carrier.Like this, in order to use the RACH root sequence of distinguishing different downlink component carriers, more resources need be divided in the base station, and this causes false-alarm, flase drop easily, and is on the other hand, for fear of up collision, also restricted to the scheduling of base station.
Another kind of scheme is to consider that the expense of message 2 is smaller, so the base station sends message 2 on all downlink component carriers, but for message 4, still has the downlink component carrier uncertain problem.To this, three kinds of solutions commonly used are arranged at present:
(1) can by message 3 come the explicit notification base station its synchronously on which downlink component carrier, as increase bit and come indicating downlink component carrier sign (Identntity, be called for short ID) information, 1bit distinguishes 2 downlink component carriers, 2bits distinguishes 4 downlink component carriers, can increase the expense of message 3 like this;
(2) keep the expense of message 3 constant, distinguish downlink component carrier by the cyclic redundancy check (CRC) of revising message 3 scramblers or sheltering message 3, implicit information is known by blind Detecting in the base station, needs modification LTE standard like this, can't compatible LTE;
(3), in message 3, use different uplink authorizations or different Cell Radio Network Temporary Identifier/Identity, Cell-RNTIs (Cell-Radio Network Temporary Identity is called for short C-RNTI) to different downlink component carriers.The resident component carrier of terminal initial can be known according to authorization resources in the base station like this, or determines the resident component carrier of terminal initial according to the C-RNTI in the message 3.There is ascending resource waste problem in this method, need take a plurality of interim C-RNTI.
From top analysis as can be seen, these methods or need make amendment to current LTE agreement can't keep the backwards compatibility with LTE, or at different downlink component carriers different parameters are set, cause access performance decline at random, have the problem of the wasting of resources simultaneously.
Summary of the invention
The technical problem to be solved in the present invention proposes a kind of multicarrier accidental access method exactly, and the base station sends the downlink component carrier uncertain problem of message 2 and message 4 in the solution prior art, and can backward compatibility LTE.
In order to solve the problems of the technologies described above, the invention provides the method that a kind of multicarrier inserts at random, be applied to the situation of senior Long Term Evolution LTE-A system up-downgoing carrier wave symmetrical arrangements, comprising:
Terminal is synchronized on the non-compatible Long Term Evolution LTE downlink component carrier by Cell searching, and after detecting Physical Broadcast Channel PBCH, sends targeting sequencing on the upstream components carrier wave;
After targeting sequencing is received in the base station, according to the frequency interval of giving tacit consent between the frequency of described upstream components carrier wave and the up-downgoing component carrier, know and the corresponding downlink component carrier of upstream components carrier wave that sends targeting sequencing, and on described downlink component carrier, send Random Access Channel RACH response message to described terminal;
After terminal is received the RACH response message, on the upstream components carrier wave that sends targeting sequencing, send uplink scheduling data first;
After described uplink scheduling data are received in the base station, on the downlink component carrier that sends the RACH response message, or on the downlink component carrier of appointing with terminal, send competition and solve message to described terminal.
Further, said method also can have following characteristics:
Described terminal is synchronized on the non-compatible LTE downlink component carrier by Cell searching and after detecting PBCH, read on the described non-compatible component carrier upstream components carrier information of this non-compatible component carrier correspondence in the system message, and, on the indicated upstream components carrier wave of this non-compatible component carrier, send targeting sequencing according to the PRACH configuration information in the system information.
Further, said method also can have following characteristics:
Described terminal is known that the base station sends the downlink component carrier of RACH response message, and receive the RACH response message on described downlink component carrier according to the frequency interval of giving tacit consent between the frequency of upstream components carrier wave and the up-downgoing component carrier.
Further, said method also can have following characteristics:
If the base station sends competition and solves message to described terminal on the downlink component carrier that sends the RACH response message, then described terminal is according to the frequency interval of giving tacit consent between the frequency of upstream components carrier wave and the up-downgoing component carrier, know that the base station sends the downlink component carrier that competition solves message, and the reception competition solves message on described downlink component carrier.
Further, said method also can have following characteristics:
If the base station sends competition and solves message to described terminal on the downlink component carrier of appointing with terminal, then the base station sends the downlink component carrier that competition solves message by the signaled terminal in advance, and terminal receives described competition according to described signaling and solves message on the described downlink component carrier of appointing.
Further, said method also can have following characteristics:
Described base station sends the downlink component carrier that competition solves message by the signaled terminal in advance, specifically is meant: the base station has comprised and has informed that terminal sends the information that competition solves the downlink component carrier of message in the RACH response message that sends.
In order to solve the problems of the technologies described above, the invention provides the method that a kind of multicarrier inserts at random, be applied to the base station side under the LTE-A system up-downgoing carrier wave symmetrical arrangements situation, comprising:
The base station receives terminal after sending targeting sequencing on the upstream components carrier wave, according to the frequency interval of giving tacit consent between the frequency of described upstream components carrier wave and the up-downgoing component carrier, know and the corresponding downlink component carrier of upstream components carrier wave that sends targeting sequencing, and on described downlink component carrier, send the RACH response message to described terminal;
After the base station receives the data of uplink scheduling first of described terminal, on the downlink component carrier that sends the RACH response message, perhaps on the downlink component carrier of appointing with terminal, send competition and solve message to terminal.
In order to solve the problems of the technologies described above, the invention provides the method that a kind of multicarrier inserts at random, be applied to the end side under the LTE-A system up-downgoing carrier wave symmetrical arrangements situation, comprising:
Terminal is synchronized on the non-compatible LTE downlink component carrier by Cell searching and after detecting PBCH, read on the described non-compatible component carrier upstream components carrier information of this non-compatible component carrier correspondence in the system message, and, on the indicated upstream components carrier wave of this non-compatible component carrier, send targeting sequencing to the base station according to the PRACH configuration information in the system information;
Terminal is known that the base station sends the downlink component carrier of RACH response message, and receive the RACH response message on described downlink component carrier according to the frequency interval of giving tacit consent between the frequency of upstream components carrier wave and the up-downgoing component carrier;
Terminal sends uplink scheduling data first on the upstream components carrier wave that sends targeting sequencing;
Terminal receives competition and solves message on the downlink component carrier that receives the RACH response message, perhaps receive described competition on the downlink component carrier of appointing in described and base station and solve message.
In order to solve the problems of the technologies described above, the invention provides the method that a kind of multicarrier inserts at random, be applied to the situation of LTE-A system up-downgoing carrier wave symmetrical arrangements, comprising:
Terminal is synchronized on the compatible LTE downlink component carrier by Cell searching and after detecting PBCH, according to the frequency interval of giving tacit consent between the frequency of this downlink component carrier and the up-downgoing component carrier, know corresponding upstream components carrier wave, and, on described upstream components carrier wave, send targeting sequencing according to the PRACH configuration information in the system information;
After targeting sequencing is received in the base station, according to the frequency interval of giving tacit consent between the frequency of described upstream components carrier wave and the up-downgoing component carrier, know and the corresponding downlink component carrier of upstream components carrier wave that sends targeting sequencing, and on described downlink component carrier, send the RACH response message to described terminal;
After terminal is received the RACH response message, on the upstream components carrier wave of described downlink component carrier correspondence, send uplink scheduling data first;
After described uplink scheduling data are received in the base station, on the downlink component carrier that sends the RACH response message, send competition and solve message to described terminal.
In order to solve the problems of the technologies described above, the invention provides the system that a kind of multicarrier inserts at random, comprise base station and terminal under the LTE-A system up-downgoing carrier wave symmetrical arrangements situation, it is characterized in that,
Described terminal is used for being synchronized on the non-compatible LTE downlink component carrier and after reading PBCH by Cell searching, read on the described non-compatible component carrier upstream components carrier information of this non-compatible component carrier correspondence in the system message, and, on the indicated upstream components carrier wave of this non-compatible component carrier, send targeting sequencing according to the PRACH configuration information in the system information; Also be used for the frequency interval given tacit consent to according between the frequency of upstream components carrier wave and the up-downgoing component carrier, know that the base station sends the downlink component carrier of RACH response message, and on described downlink component carrier, receive the RACH response message; Also be used on the upstream components carrier wave that sends targeting sequencing, sending uplink scheduling data first to the base station; Also be used on the downlink component carrier that receives the RACH response message, receiving competition and solve message, perhaps on the downlink component carrier of appointing with the base station, receive described competition and solve message;
After described base station is used to receive targeting sequencing, according to the frequency interval of giving tacit consent between the frequency of described upstream components carrier wave and the up-downgoing component carrier, know and the corresponding downlink component carrier of upstream components carrier wave that sends targeting sequencing, and on described downlink component carrier, send the RACH response message to described terminal; And, receive described uplink scheduling data after, on the downlink component carrier that sends the RACH response message, perhaps on the downlink component carrier of appointing with terminal, send competition and solve message to described terminal.
The present invention can solve the downlink component carrier uncertain problem that sends message 2 and message 4 well.The present invention simultaneously can keep the backward compatibility with LTE, and does not have the problem of the wasting of resources.
Description of drawings
Fig. 1 is the random access procedure of LTE terminal in the LTE system;
Fig. 2 is the flow chart that at random insert of the embodiment of the invention one LTE-A terminal on non-compatible LTE component carrier;
Fig. 3 is the flow charts that at random insert of the embodiment of the invention two LTE-A terminals on compatible LTE component carrier;
Fig. 4 is the asymmetric component carrier configuration of LTE-A system up-downgoing;
Fig. 5 is the random access procedure of application example LTE-A terminal of the present invention on non-compatible LTE component carrier;
Fig. 6 is the random access procedure of application example LTE-A terminal of the present invention on compatible LTE component carrier.
Embodiment
In the present invention, a kind of method and system that inserts at random under the situation of up-downgoing carrier wave symmetrical arrangements is proposed, by effectively utilizing the frequency interval between the up-downgoing component carrier, eliminated the uncertain problem that sends the downlink component carrier of message 2 and message 4.Adopt the present invention, can fine maintenance and the backward compatibility of LTE, and do not need to increase redundancy overhead, and can obtain the performance identical with LTE.
The present invention is described in detail below in conjunction with drawings and the specific embodiments.
According to the 36.101 agreements regulation of LTE, the up-downgoing carrier wave has specific frequency interval.Under the asymmetrical spectrum aggregating scene of up-downgoing, (mainly refer to the situation of downlink component carrier number here) like this greater than the upstream components carrier number, up-downgoing carrier frequency interval according to the LTE regulation, just exist the part downlink component carrier incompatible, below be referred to as non-compatible LTE downlink component carrier, and and satisfy characteristic frequency downlink component carrier at interval between the upstream components carrier wave, below be referred to as compatible LTE downlink component carrier.
Be non-compatible LTE component carrier and two kinds of situations of compatible LTE component carrier according to downlink component carrier synchronous in the Cell searching below, provide the corresponding accidental access method of LTE-A respectively.
Embodiment one
As shown in Figure 2, the LTE-A terminal is synchronized on the non-compatible LTE downlink component carrier by Cell searching and after detecting PBCH, its random access procedure may further comprise the steps:
Step 201, terminal send message 1 on the upstream components carrier wave;
Wherein, described terminal is synchronized on the non-compatible LTE downlink component carrier by Cell searching and after detecting PBCH, read on the described non-compatible component carrier upstream components carrier information of this non-compatible component carrier correspondence in the system message, and, on the indicated upstream components carrier wave of this non-compatible component carrier, send message 1 according to the PRACH configuration information in the system information;
Step 202, after message 1 is received in the base station, according to the frequency interval of giving tacit consent between the frequency of described upstream components carrier wave and the up-downgoing component carrier, know and send the corresponding downlink component carrier of upstream components carrier wave of message 1, and on described downlink component carrier, send message 2 to described terminal;
After step 203, terminal are received message 2, on the upstream components carrier wave that sends message 1, send message 3;
Wherein, described terminal is known that the base station sends the downlink component carrier of message 2, and receive message 2 on described downlink component carrier according to the frequency interval of giving tacit consent between the frequency of upstream components carrier wave and the up-downgoing component carrier;
After step 204, base station are received message 3, sending on the downlink component carrier of message 2, perhaps on the downlink component carrier of appointing with terminal, sending message 4 to described terminal;
Wherein, if the base station sends message 4 to described terminal on the downlink component carrier that sends message 2, then described terminal is according to the frequency interval of giving tacit consent between the frequency of upstream components carrier wave and the up-downgoing component carrier, know the downlink component carrier of base station feedback message 4, and on described downlink component carrier, receive message 4;
If the base station sends message 4 to described terminal on the component carrier of appointing with terminal, then the base station can send the downlink component carrier of message 4 by the signaled terminal, and terminal receives described message 4 according to described signaling on the corresponding downstream component carrier; Also can adopt the mode of prior agreement, receive described message 4 on the terminal downlink component carrier according to a preconcerted arrangement;
Can there be various ways described base station by the downlink component carrier that the signaled terminal sends message 4, such as, comprised in the message 2 that the base station sends and informed that terminal sends the information of the downlink component carrier of message 4.
Embodiment two
As shown in Figure 3, the LTE-A terminal is synchronized on the compatible LTE downlink component carrier by Cell searching and after detecting PBCH, its random access procedure may further comprise the steps:
Step 301, terminal send message 1 on the upstream components carrier wave;
Wherein, terminal is synchronized on the compatible LTE downlink component carrier by Cell searching and after detecting PBCH, according to the frequency interval of giving tacit consent between the frequency of this downlink component carrier and the up-downgoing component carrier, know corresponding upstream components carrier wave, and, on described upstream components carrier wave, send message 1 according to the PRACH configuration information in the system information;
Step 302, after message 1 is received in the base station, according to the frequency interval of giving tacit consent between the frequency of described upstream components carrier wave and the up-downgoing component carrier, know and send the corresponding downlink component carrier of upstream components carrier wave of message 1, and on described downlink component carrier, send message 2 to described terminal;
After step 303, terminal are received message 2, on the upstream components carrier wave of described downlink component carrier correspondence, send message 3;
After step 304, base station are received message 3, on the downlink component carrier that sends message 2, send message 4 to described terminal.
Wherein, described end is known that the base station sends the downlink component carrier of message 2 and message 4, and receive message 2 and message 4 respectively on described downlink component carrier according to the frequency interval of giving tacit consent between the frequency of upstream components carrier wave and the up-downgoing component carrier.
The system that a kind of multicarrier of the embodiment of the invention inserts at random comprises base station and terminal under the LTE-A system up-downgoing carrier wave symmetrical arrangements situation,
Wherein, described terminal is used for being synchronized on the non-compatible LTE downlink component carrier and after detecting PBCH by Cell searching, read on the described non-compatible component carrier upstream components carrier information of this non-compatible component carrier correspondence in the system message, and, on the indicated upstream components carrier wave of this non-compatible component carrier, send message 1 according to the PRACH configuration information in the system information; Also be used for the frequency interval given tacit consent to according between the frequency of upstream components carrier wave and the up-downgoing component carrier, know that the base station sends the downlink component carrier of message 2, and on described downlink component carrier, receive message 2; Also be used on the upstream components carrier wave that sends message 1, sending message 3 to the base station; Also be used for receiving message 4 on the downlink component carrier of message 2 receiving, perhaps on the downlink component carrier of appointing with the base station, receive described message 4;
After described base station is used to receive message 1, according to the frequency interval of giving tacit consent between the frequency of described upstream components carrier wave and the up-downgoing component carrier, know and the corresponding downlink component carrier of upstream components carrier wave that sends message 1, and on described downlink component carrier, send message 2 to described terminal; And, receive message 3 after, sending on the downlink component carrier of message 2, perhaps on the downlink component carrier of appointing with terminal, send message 4 to described terminal.
Described terminal also is used for being synchronized on the compatible LTE downlink component carrier and after detecting PBCH by Cell searching, according to the frequency interval of giving tacit consent between the frequency of this downlink component carrier and the up-downgoing component carrier, know the upstream components carrier wave relative with it, and, on described upstream components carrier wave, send message 1 according to the PRACH configuration information in the system information.
For the ease of understanding the present invention, the present invention is further set forth below in conjunction with concrete application example.
Suppose in the LTE-A system, up four component carriers, descending two component carriers, as shown in Figure 4.According to the transmitting-receiving carrier frequency interval that the 36.1.1 agreement of LTE is stipulated, as shown in table 1, there is relation one to one between the up-downgoing component carrier.Here the symmetrical component carrier wave is right each other to suppose upstream components carrier wave 1 and downlink component carrier 2, and the symmetrical component carrier wave is right each other with downlink component carrier 3 for upstream components carrier wave 2, and downlink component carrier 1 and downlink component carrier 4 are the non-compatible component carrier of LTE.
Table 1 LTE system transmitting-receiving carrier wave default frequency at interval
| Frequency band | The transmitting-receiving centre carrier frequency at interval |
| 1 | 190MHz |
| 2 | 80MHz. |
| 3 | 95MHz. |
| 4 | 400MHz |
| 5 | 45MHz |
| 6 | 45MHz |
| 7 | 120MHz |
| 8 | 45MHz |
| 9 | 95MHz |
| 10 | 400MHz |
| 11 | 48MHz |
| 12 | 30MHz |
| 13 | -31MHz |
| 14 | -30MHz |
| 17 | 30MHz |
Suppose that the LTE-A terminal is synchronized to downlink component carrier 1 and reads PBCH by Cell searching, its random access procedure may further comprise the steps, as shown in Figure 5:
(1) reads on the downlink component carrier 1 the upstream components carrier information of this component carrier correspondence in the system message, know that its corresponding upstream components carrier wave is a upstream components carrier wave 1, terminal is according to the PRACH configuration information in the system information simultaneously, and 1 sends message 1 on the upstream components carrier wave;
(2) base station is according to the frequency interval of giving tacit consent between the frequency of the upstream components carrier wave of message 1 and the up-downgoing component carrier, obtains the downlink component carrier 2 corresponding with the upstream components carrier wave 1 of transmission message 1, and on this downlink component carrier feedback message 2;
(3) after terminal is received message 2, on the upstream components carrier wave 1 that sends message 1, send message 3;
(4) after message 3 is received in the base station, to terminal feedback message 4.The component carrier of feedback message 4 can be the downlink component carrier 2 that sends message 2, also can be the downlink component carrier 1 that other and terminal are appointed.
Suppose that the LTE-A terminal is synchronized to downlink component carrier 2 and reads PBCH by Cell searching, its random access procedure may further comprise the steps, as shown in Figure 6:
(1) according to the frequency interval of giving tacit consent between the frequency of this downlink component carrier and the up-downgoing component carrier, know that downlink component carrier 2 corresponding upstream components carrier waves are upstream components carrier wave 1, terminal is according to the PRACH configuration information in the system information simultaneously, and 1 sends message 1 on the upstream components carrier wave;
(2) base station is according to the frequency interval of giving tacit consent between the frequency of the upstream components carrier wave of message 1 and the up-downgoing component carrier, obtains the downlink component carrier 2 corresponding with the upstream components carrier wave 1 of transmission message 1, and on this downlink component carrier feedback message 2;
(3) after terminal is received message 2, on the upstream components carrier wave 1 that sends message 1, send message 3;
(4) after message 3 is received in the base station, on the downlink component carrier 2 of feedback message 2 to terminal feedback message 4.
By above embodiment with use example as can be seen, by adopting the method and system that inserts at random of the present invention, efficiently solve the uncertain problem of the downlink component carrier that sends message 2 and message 4, there is not the problem of the wasting of resources simultaneously.
Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (10)
1, the method that inserts at random of a kind of multicarrier is applied to the situation of senior Long Term Evolution LTE-A system up-downgoing carrier wave symmetrical arrangements, comprising:
Terminal is synchronized on the non-compatible Long Term Evolution LTE downlink component carrier by Cell searching, and after detecting Physical Broadcast Channel PBCH, sends targeting sequencing on the upstream components carrier wave;
After targeting sequencing is received in the base station, according to the frequency interval of giving tacit consent between the frequency of described upstream components carrier wave and the up-downgoing component carrier, know and the corresponding downlink component carrier of upstream components carrier wave that sends targeting sequencing, and on described downlink component carrier, send Random Access Channel RACH response message to described terminal;
After terminal is received the RACH response message, on the upstream components carrier wave that sends targeting sequencing, send uplink scheduling data first;
After described uplink scheduling data are received in the base station, on the downlink component carrier that sends the RACH response message, or on the downlink component carrier of appointing with terminal, send competition and solve message to described terminal.
2, the method for claim 1 is characterized in that,
Described terminal is synchronized on the non-compatible LTE downlink component carrier by Cell searching and after detecting PBCH, read on the described non-compatible component carrier upstream components carrier information of this non-compatible component carrier correspondence in the system message, and, on the indicated upstream components carrier wave of this non-compatible component carrier, send targeting sequencing according to the PRACH configuration information in the system information.
3, the method for claim 1 is characterized in that,
Described terminal is known that the base station sends the downlink component carrier of RACH response message, and receive the RACH response message on described downlink component carrier according to the frequency interval of giving tacit consent between the frequency of upstream components carrier wave and the up-downgoing component carrier.
4, the method for claim 1 is characterized in that,
If the base station sends competition and solves message to described terminal on the downlink component carrier that sends the RACH response message, then described terminal is according to the frequency interval of giving tacit consent between the frequency of upstream components carrier wave and the up-downgoing component carrier, know that the base station sends the downlink component carrier that competition solves message, and the reception competition solves message on described downlink component carrier.
5, the method for claim 1 is characterized in that,
If the base station sends competition and solves message to described terminal on the downlink component carrier of appointing with terminal, then the base station sends the downlink component carrier that competition solves message by the signaled terminal in advance, and terminal receives described competition according to described signaling and solves message on the described downlink component carrier of appointing.
6, method as claimed in claim 5 is characterized in that,
Described base station sends the downlink component carrier that competition solves message by the signaled terminal in advance, specifically is meant: the base station has comprised and has informed that terminal sends the information that competition solves the downlink component carrier of message in the RACH response message that sends.
7, the method that inserts at random of a kind of multicarrier is applied to the base station side under the LTE-A system up-downgoing carrier wave symmetrical arrangements situation, comprising:
The base station receives terminal after sending targeting sequencing on the upstream components carrier wave, according to the frequency interval of giving tacit consent between the frequency of described upstream components carrier wave and the up-downgoing component carrier, know and the corresponding downlink component carrier of upstream components carrier wave that sends targeting sequencing, and on described downlink component carrier, send the RACH response message to described terminal;
After the base station receives the data of uplink scheduling first of described terminal, on the downlink component carrier that sends the RACH response message, perhaps on the downlink component carrier of appointing with terminal, send competition and solve message to terminal.
8, the method that inserts at random of a kind of multicarrier is applied to the end side under the LTE-A system up-downgoing carrier wave symmetrical arrangements situation, comprising:
Terminal is synchronized on the non-compatible LTE downlink component carrier by Cell searching and after detecting PBCH, read on the described non-compatible component carrier upstream components carrier information of this non-compatible component carrier correspondence in the system message, and, on the indicated upstream components carrier wave of this non-compatible component carrier, send targeting sequencing to the base station according to the PRACH configuration information in the system information;
Terminal is known that the base station sends the downlink component carrier of RACH response message, and receive the RACH response message on described downlink component carrier according to the frequency interval of giving tacit consent between the frequency of upstream components carrier wave and the up-downgoing component carrier;
Terminal sends uplink scheduling data first on the upstream components carrier wave that sends targeting sequencing;
Terminal receives competition and solves message on the downlink component carrier that receives the RACH response message, perhaps receive described competition on the downlink component carrier of appointing in described and base station and solve message.
9, the method that inserts at random of a kind of multicarrier is applied to the situation of LTE-A system up-downgoing carrier wave symmetrical arrangements, comprising:
Terminal is synchronized on the compatible LTE downlink component carrier by Cell searching and after detecting PBCH, according to the frequency interval of giving tacit consent between the frequency of this downlink component carrier and the up-downgoing component carrier, know corresponding upstream components carrier wave, and, on described upstream components carrier wave, send targeting sequencing according to the PRACH configuration information in the system information;
After targeting sequencing is received in the base station, according to the frequency interval of giving tacit consent between the frequency of described upstream components carrier wave and the up-downgoing component carrier, know and the corresponding downlink component carrier of upstream components carrier wave that sends targeting sequencing, and on described downlink component carrier, send the RACH response message to described terminal;
After terminal is received the RACH response message, on the upstream components carrier wave of described downlink component carrier correspondence, send uplink scheduling data first;
After described uplink scheduling data are received in the base station, on the downlink component carrier that sends the RACH response message, send competition and solve message to described terminal.
10, the system that inserts at random of a kind of multicarrier comprises base station and terminal under the LTE-A system up-downgoing carrier wave symmetrical arrangements situation, it is characterized in that,
Described terminal is used for being synchronized on the non-compatible LTE downlink component carrier and after reading PBCH by Cell searching, read on the described non-compatible component carrier upstream components carrier information of this non-compatible component carrier correspondence in the system message, and, on the indicated upstream components carrier wave of this non-compatible component carrier, send targeting sequencing according to the PRACH configuration information in the system information; Also be used for the frequency interval given tacit consent to according between the frequency of upstream components carrier wave and the up-downgoing component carrier, know that the base station sends the downlink component carrier of RACH response message, and on described downlink component carrier, receive the RACH response message; Also be used on the upstream components carrier wave that sends targeting sequencing, sending uplink scheduling data first to the base station; Also be used on the downlink component carrier that receives the RACH response message, receiving competition and solve message, perhaps on the downlink component carrier of appointing with the base station, receive described competition and solve message;
After described base station is used to receive targeting sequencing, according to the frequency interval of giving tacit consent between the frequency of described upstream components carrier wave and the up-downgoing component carrier, know and the corresponding downlink component carrier of upstream components carrier wave that sends targeting sequencing, and on described downlink component carrier, send the RACH response message to described terminal; And, receive described uplink scheduling data after, on the downlink component carrier that sends the RACH response message, perhaps on the downlink component carrier of appointing with terminal, send competition and solve message to described terminal.
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