CN101877907A - Method and system for base station to identify relay nodes, base station and replay nodes - Google Patents
Method and system for base station to identify relay nodes, base station and replay nodes Download PDFInfo
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Abstract
The invention discloses a method for a base station to identify relay nodes. N random access pilot sequences are set into random access pilot sequences special for the relay nodes by using the base station, wherein n is an integer more than or equal to 1. The method comprises the following steps of: transmitting system broadcast by using the base station, wherein the system broadcast carries random access pilot sequence information; and judging whether the received random access pilot sequence belongs to the random access pilot sequence special for the relay nodes after the base station receives the random access pilot sequence, and if so, judging that the relay nodes initiate the random access. The invention also discloses a system for the base station to identify the relay nodes and the base station and the relay nodes. The scheme can be used for identifying the relay nodes in the random access process, thereby accelerating the configuration process, shortening the time for serving user equipment from the electrification to the starting of the relay nodes and improving the user experience.
Description
Technical field
The present invention relates to the mobile communication technology field, particularly the method and system of identification of base stations via node, a kind of base station and via node.
Background technology
(LTE is the abbreviation of Long Term Evolution at 3GPP Long Term Evolution LTE-Advanced, it is the evolution system of 3-G (Generation Three mobile communication system), the LTE-Advanced system is the upgrading of LTE system, being abbreviated as LTE-A) in the system, the service quality and the Extended Cell that will adopt the method for relaying (Relay) cooperation transmission to improve Cell Edge User cover.Fig. 1 is the schematic diagram of LTE-A system network architecture.In relay system, the subscriber equipment (UE) of directly being served by base station (eNB) is called grand UE (Macro UE), and (Relay Node, RN) directly the UE of service is called relaying UE (Relay UE) by via node.ENB links core net (CN) by wireline interface; RN links eNB by wave point; UE links RN or eNB by wave point.
In mobile communication system, carry out to same base station or via node must satisfying uplink synchronous between the subscriber equipment of transmitting uplink data, its objective is that the upward signal that makes from the different user devices of different distance can arrive base station/via node synchronously.Uplink synchronous can reach following beneficial effect: signal disturbs between adjacent time-slots as reducing, and improves systematic function, simplifies the design of base station/via node etc.Therefore, be in the asynchronous regime subscriber equipment before sending upstream data, needs use random access procedure is set up the uplink synchronous with network, could carry out the signal transmission then under the method for synchronization.
The basic procedure of subscriber equipment random access scheme comprises the steps: as shown in Figure 2 in the prior art
Step 201: at a plurality of alternative random access leader sequences (Random Access Preamble, be designated hereinafter simply as Preamble) in, subscriber equipment is selected a Preamble at random and is upward sent this Preamble to the base station in Random Access Channel (Random Access Channel is designated hereinafter simply as RACH).
Step 202: when subscriber equipment sends Preamble, the base station can be detected the RACH channel, if monitor Preamble, then calculate the actual time of arrival of this Preamble and the deviation of Expected Arrival Time, then with it as timing adjustment amount (Timing Alignment is hereinafter to be referred as TA).
Step 203: the base station is placed on described TA in the accidental access response (Random Access Response) and sends to subscriber equipment.Described accidental access response also further comprises: the identification information of the Preamble that is received, as numbering, transmitting time etc.; The information of the channel resource that distributes for follow-up transmitting uplink data, when comprising resource-position frequently, Modulation and Coding Scheme (Modulation and Coding Scheme, MCS) etc.; The temporary mark (Temp-RNTI) that the base station is distributed for the user.
Step 204: subscriber equipment is after receiving accidental access response, whether identification information and the identification information of self of judging Preamble mate, if, according to TA information wherein, adjust the transmission Timing Advance of upward signal, just adjust the transmitting time of upstream message, can set up uplink synchronous with network.
Step 205: subscriber equipment sends upstream data to the base station, and its used ascending resource is that the base station is the resource of user equipment allocation in step 203.At least should comprise in the upstream data that subscriber equipment sends: the identification information of subscriber equipment, as international mobile subscriber identification marking (International Mobile Subscriber Identity, IMSI), the temporarily moved subscriber identification marking (Temporary Mobile Subscriber Identify, TMSI) or C-RNTI;
Step 206: whether the identification information of the subscriber equipment that base station detection subscriber equipment sends in step 3 is legal, and solves message with the testing result notifying user equipment by competition.
After the Overall Steps of having finished above-mentioned random access procedure, transmitting uplink data just can have been carried out in subscriber equipment and base station.
The deployment of RN for convenience, the layoutprocedure of RN should be avoided artificial participation as far as possible.The RN course of work of current 3GPP imagination comprises the steps: as shown in Figure 3
Step 301:RN carries out random access procedure and inserts eNB after powering on.RN is after access is finished at random, by sending the node type notice eNB of Radio Resource control (RRC) message with self.
Step 302:eNB is configured it after identifying current access node and being RN.
Step 303: after configuration was finished, RN started working.
RN is as network side node, and bearing is the task of numerous user's services.If eNB can early identify RN, might be preferably its Resources allocation, quicken its layoutprocedure.Thereby shorten RN from power on to the time that begins to the UE service, promote user experience.But existing RN recognition technology, eNB need could obtain the node type of RN after RN finishes access at random.Speed is slower.
Summary of the invention
In view of this, the objective of the invention is to, propose a kind of method of identification of base stations via node, can in random access procedure, discern via node.In the described method, a n random access leader sequence in base station is set to specialize in the random access leader sequence that via node uses, and described n is the integer more than or equal to 1, and this method also comprises the steps:
Random access leader sequence information is carried in base station transmission system broadcasting in the described system broadcasts;
After random access leader sequence is received in the base station, judge whether the random access leader sequence of being received belongs to the described random access leader sequence that via node uses of specializing in, if then judge it is that via node initiates to insert at random.
Another purpose of the present invention is, proposes a kind of base station, comprises being used for to what the via node that inserts at random was provided with module being set, and described base station also comprises:
Reserve module, specialize in the random access leader sequence that via node uses for the n that is used to store, described n is the integer more than or equal to 1;
Broadcast module is used for transmitting system broadcasting, carries random access leader sequence information in the described system broadcasts;
Receiver module is used to receive the random access leader sequence from via node or subscriber equipment;
Judge module is used to judge whether the random access leader sequence that described receiver module is received belongs to the random access leader sequence of described reservation module stores, if then send the indication information that the via node initiation inserts at random to the described module that is provided with;
The described module that is provided with is used for according to the indication information from judge module the via node that inserts at random being provided with.
The present invention also aims to, propose a kind of via node, comprise the receiver module that is used to receive random access leader sequence information, be used to the access module of initiating to insert at random at random;
Processing module is used for after described receiver module receives random access leader sequence information, determines to specialize in the random access leader sequence set that via node uses;
Described access module is at random selected a random access leader sequence from the random access leader sequence set that described processing module is determined, and initiates to insert at random according to selected random access leader sequence.
The present invention also aims to, a kind of system of identification of base stations via node is proposed, comprise base station and via node, a described base station n random access leader sequence is set to specialize in the random access leader sequence that via node uses, described n is the integer more than or equal to 1, random access leader sequence information is carried in base station transmission system broadcasting in the described system broadcasts; After random access leader sequence is received in the base station, judge whether the random access leader sequence of being received belongs to the described random access leader sequence that via node uses of specializing in, if then judge it is that via node initiates to insert at random;
Described via node receives after the random access leader sequence information, determine to specialize in the random access leader sequence set that via node uses, and from determined random access leader sequence set, select a random access leader sequence, and initiate to insert at random according to selected random access leader sequence.
As can be seen from the above technical solutions, the base station is that via node is reserved special-purpose random access leader sequence, when receiving random access leader sequence, by judging whether the random access leader sequence of being received belongs to the random access leader sequence that via node uses of specializing in of reservation, reach the purpose of identification via node, thereby quicken its layoutprocedure, shorten via node, promote user experience from power on to the time that begins to the UE service.
Description of drawings
Fig. 1 is the schematic diagram of LTE-A system network architecture;
Fig. 2 is the basic flow sheet of subscriber equipment random access scheme in the prior art;
Fig. 3 is the via node workflow diagram of current 3GPP imagination;
Fig. 4 is the basic flow sheet of the identification of base stations via node of embodiment of the invention proposition;
Fig. 5 is the flow chart of the embodiment of the invention one;
Fig. 6 is the flow chart of the embodiment of the invention two;
Fig. 7 is the flow chart of the embodiment of the invention three.
Embodiment
The present invention proposes a kind of in random access procedure eNB can discern the method for RN, its basic procedure comprises the steps: as shown in Figure 4
Step 401:eNB reserves several and specializes in the Preamble that RN uses, when RN need insert eNB, and at random transmission of selection from the Preamble of these reservations.
Step 402:eNB is after receiving Preamble, and judging this access node is RN.Thereby be preferably its scheduling resource, quicken layoutprocedure.
For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is further elaborated below in conjunction with embodiment.
Embodiment one:
The realization flow of the identification of base stations via node of embodiment one comprises the steps: as shown in Figure 5
Step 501:eNB keeps for sequence number and corresponding physical Random Access Channel (PRACH) the running time-frequency resource position of the special-purpose Preamble that RN inserts at random, and sends the sequence number of the Preamble that is reserved and the PRACH running time-frequency resource position of the Preamble correspondence reserved in system broadcasts;
Step 502:RN is after receiving system broadcasts, and at random one of selection in the Preamble of the special use of reserving is initiated to insert at random;
Step 503:eNB detects the RACH channel, if detect Preamble, judges whether this Preamble is to keep for RN to be used for inserting at random, if then judge it is that RN initiates to insert at random, and RN is configured; Otherwise, then be that UE initiates to insert at random, carry out the random access procedure of UE.
In the step 501 of present embodiment, need in the broadcast of LTE, add sequence number and the corresponding PRACH running time-frequency resource position of the special-purpose Preamble of RN.Provide a concrete example of the RACH configuration of carrying in the broadcast below:
--ASN1START
RACH-ConfigCommon::＝ SEQUENCE{
preambleInfo SEQUENCE{
numberOfRA-Preambles ENUMERATED?{
n4，n8，n12，n16，n20，n24，n28，
n32，n36，n40，n44，n48，n52，n56，
n60，n64}，
preamblesGroupAConfig SEQUENCE{
sizeOfRA-PreamblesGroupA ENUMERATED{
n4，n8，n12，n16，n20，n24，n28，
n32，n36，n40，n44，n48，n52，n56，
n60，spare1}，
messageSizeGroupA ENUMERATED {b56，b144，b208，
spare1}，
messagePowerOffsetGroupB ENUMERATED{minusinfinity，spare1}，
…
} OPTIONAL --
NeedOP
}，
powerRampingParameters SEQUENCE{
powerRampingStep ENUMERATED{dB0，dB2，dB4，dB6}，
preambleInitialReceivedTargetPower ENUMERATED{
dBm-120，dBm-118，dBm-116，dBm-114，
dBm-112，
dBm-110，dBm-108，dBm-106，dBm-104，
dBm-102，
dBm-100，dBm-98，dBm-96，dBm-94，
dBm-92，dBm-90}
}，
ra-SupervisionInfo SEQUENCE{
preambleTransMax ENUMERATED{
n3，n4，n5，n6，n7，n8，n10，n20，n50，
n100，n200，spare5，spare4，spare3，
spare2，spare1}，
ra-ResponseWindowSize ENUMERATED?{
sf2，sf3，sf4，sf5，sf6，sf7，
sf8，sf10}，
mac-ContentionResolutionTimer ENUMERATED{
sf8，sf16，sf24，sf32，sf40，sf48，
sf56，sf64}
}，
maxHARQ-Msg3Tx INTEGER(1..8)，
…
}
--ASN1STOP
According to step 501, above-mentioned broadcast is carried out non-key expansion, add special-purpose Preamble of RN and random access resource information, as the content that wherein underscore indicated:
--ASN1START
RACH-ConfigCommon::＝ SEQUENCE{
preambleInfo SEQUENCE{
numberOfRA-Preambles ENUMERATED?{
n4，n8，n12，n16，n20，n24，n28，
n32，n36，n40，n44，n48，n52，n56，
n60，n64}，
preamblesGroupAConfig SEQUENCE{
sizeOfRA-PreamblesGroupA ENUMERATED{
n4，n8，n12，n16，n20，n24，n28，
n32，n36，n40，n44，n48，n52，n56，
n60，spare1}，
messageSizeGroupA ENUMERATED {b56，b144，b208，
spare1}，
messagePowerOffsetGroupB ENUMERATED{minusinfinity，spare1}，
…
RACH-ConfigRN::＝ SEQUENCE{
ra-PreambleIndex INTEGER?(0..63)，
ra-PRACH-MaskIndex INTEGER?(0..15)
}
…
} OPTIONAL --
NeedOP
}，
powerRampingParameters SEQUENCE{
powerRampingStep ENUMERATED{dB0，dB2，dB4，dB6}，
preambleInitialReceivedTargetPower ENUMERATED{
dBm-120，dBm-118，dBm-116，dBm-114，
dBm-112，
dBm-110，dBm-108，dBm-106，dBm-104，
dBm-102，
dBm-100，dBm-98，dBm-96，dBm-94，
dBm-92，dBm-90}
}，
ra-SupervisionInfo SEQUENCE{
preambleTransMax ENUMERATED{
n3，n4，n5，n6，n7，n8，n10，n20，n50，
n100，n200，spare5，spare4，spare3，
spare2，spare1}，
ra-ResponseWindowSize ENUMERATED{
sf2，sf3，sf4，sf5，sf6，sf7，
sf8，sf10}，
mac-ContentionResolutionTimer ENUMERATED{
sf8，sf16，sf24，sf32，sf40，sf48，
sf56，sf64}
}，
maxHARQ-Msg3Tx INTEGER(1..8)，
…
}
--ASN1STOP
Above example only is used to illustrate the present invention program, the present invention program is not limited.
Embodiment two:
In agreement, demarcate the number information n remain for the Preamble word that RN inserts at random in advance.The realization flow of the identification of base stations via node of embodiment two comprises the steps: as shown in Figure 6
Step 601:eNB in system broadcasts, the PRACH running time-frequency resource position that broadcasting is used for the sequence number (for example: the sequence number of broadcasting is 0～55) of the Preamble that UE inserts at random and is used for the Preamble correspondence that UE inserts at random;
Step 602:RN selects a Preamble to insert at random from available Preamble set after uppick broadcasting at random, and available Preamble set is determined according to following scheme:
Scheme one: Preamble n the Preamble afterwards that available Preamble set inserts at random for being used for UE, promptly sequence number is the Preamble of 56～56+n-1;
Scheme two: available Preamble set is individual for the n of the middle sequence number maximum of whole Preamble (totally 64) that system can use, and promptly sequence number is the Preamble of 63-n+1～63.
Above scheme only is used for for example, and reality also can adopt other modes to determine available Preamble set.
Step 603:eNB checks whether this Preamble keeps for RN to be used for inserting at random after receiving Preamble, if then be that RN initiates to insert at random; Otherwise, then be that UE initiates to insert at random.
Embodiment three:
The realization flow of the identification of base stations via node of embodiment three comprises the steps: as shown in Figure 7
Step 701:eNB in system broadcasts, the PRACH running time-frequency resource position that broadcasting is used for sequence number (for example: the sequence number of broadcasting is 0～55), the number information n that is used for the Preamble word that RN inserts at random that is reserved of the Preamble that UE inserts at random and is used for the Preamble correspondence that RN inserts at random;
Step 702:RN selects a Preamble to insert at random from available Preamble set after receiving broadcasting at random, and available Preamble set is determined according to following scheme:
Scheme one: Preamble n the Preamble afterwards that available Preamble set inserts at random for being used for UE, promptly sequence number is the Preamble of 56～56+n-1;
Scheme two: available Preamble set is individual for the n of the middle sequence number maximum of whole Preamble (totally 64) that system can use, and promptly sequence number is the Preamble of 63-n+1～63;
Described n is the integer more than or equal to 1.Above scheme only is used for for example, and reality also can adopt other modes to determine available Preamble set.
Step 703:eNB checks whether this Preamble keeps for RN to be used for inserting at random after receiving Preamble, if then be that RN initiates to insert at random; Otherwise, then be that UE initiates to insert at random.
Embodiment four proposes a kind of base station, and via node can be discerned in this base station in random access procedure.Described base station comprises:
Module is set, is used for the via node that inserts at random is provided with;
Reserve module, specialize in the random access leader sequence that via node uses for the n that is used to store, described n is the integer more than or equal to 1;
Broadcast module is used for transmitting system broadcasting, carries random access leader sequence information in the described system broadcasts;
Receiver module is used to receive the random access leader sequence from via node or subscriber equipment;
Judge module is used to judge whether the random access leader sequence that described receiver module is received belongs to the random access leader sequence of described reservation module stores, if then send the indication information that the via node initiation inserts at random to the described module that is provided with.
Preferably, the random access leader sequence information of carrying in the system broadcasts that described broadcast module sends comprises the sequence number of the random access leader sequence of specializing in the via node use.
Perhaps, the random access leader sequence information of carrying in the system broadcasts that described broadcast module sends comprises the sequence number of the random access leader sequence that uses for subscriber equipment.
Can further include the described number n that specializes in the random access leader sequence of via node use in the random access leader sequence information of carrying in the system broadcasts that described broadcast module sends.
Further carry in the system broadcasts that described broadcast module sends: with specialize in random access leader sequence that via node uses or for the random access leader sequence corresponding physical Random Access Channel running time-frequency resource position of subscriber equipment use.
The embodiment of the invention five proposes a kind of via node, comprises the receiver module that is used to receive random access leader sequence information, is used to the access module at random initiating to insert at random, and described via node also comprises:
Processing module is used for after described receiver module receives random access leader sequence information, determines to specialize in the random access leader sequence set that via node uses;
Described access module is at random selected a random access leader sequence from the random access leader sequence set that described processing module is determined, and initiates to insert at random according to selected random access leader sequence.
Described processing module comprises:
Processing unit one according to the number n of the random access leader sequence of specializing in the via node use that sets in advance, determines to specialize in the random access leader sequence set that via node uses.
Perhaps, the number n that comprises the random access leader sequence of specializing in the via node use in the random access leader sequence information that described receiver module receives;
Described processing module comprises:
Processing unit two is used for the number n of the random access leader sequence that receives according to described receiver module, determines to specialize in the random access leader sequence set that via node uses.
Described processing unit one or processing unit two will be gathered as the random access leader sequence of specializing in the via node use for random access leader sequence n the random access leader sequence afterwards that subscriber equipment uses;
Perhaps, with system can with whole random access leader sequences in n of the sequence number maximum as specializing in the random access leader sequence set that via node uses.
The embodiment of the invention six proposes a kind of system of identification of base stations via node, comprise base station and via node, a described base station n random access leader sequence is set to specialize in the random access leader sequence that via node uses, described n is the integer more than or equal to 1, random access leader sequence information is carried in base station transmission system broadcasting in the described system broadcasts; After random access leader sequence is received in the base station, judge whether the random access leader sequence of being received belongs to the described random access leader sequence that via node uses of specializing in, if then judge it is that via node initiates to insert at random;
Described via node receives after the random access leader sequence information, determine to specialize in the random access leader sequence set that via node uses, and from determined random access leader sequence set, select a random access leader sequence, and initiate to insert at random according to selected random access leader sequence.
Preferably, described base station comprises:
Reserve module, specialize in the random access leader sequence that via node uses for the n that is used to store, described n is the integer more than or equal to 1;
Broadcast module is used for transmitting system broadcasting, carries random access leader sequence information in the described system broadcasts;
Receiver module is used to receive the random access leader sequence from via node or subscriber equipment;
Judge module is used to judge whether the random access leader sequence that described receiver module is received belongs to the random access leader sequence of described reservation module stores, if then send the indication information that the via node initiation inserts at random to the described module that is provided with;
Module is set, is used for the via node that inserts at random being provided with according to indication information from judge module.
Preferably, described via node further comprises:
Receiver module is used to receive random access leader sequence information
Processing module is used for after described receiver module receives random access leader sequence information, determines to specialize in the random access leader sequence set that via node uses;
Access module is used for selecting a random access leader sequence from the random access leader sequence set that described processing module is determined, and initiates to insert at random according to selected random access leader sequence at random.
Wherein, described processing module can comprise:
Processing unit one according to the number n of the random access leader sequence of specializing in the via node use that sets in advance, determines to specialize in the random access leader sequence set that via node uses.
Perhaps, the number n that comprises the random access leader sequence of specializing in the via node use in the random access leader sequence information that described receiver module receives; Described processing module comprises:
Processing unit two is used for the number n of the random access leader sequence that receives according to described receiver module, determines to specialize in the random access leader sequence set that via node uses.
Described processing unit one or processing unit two will be gathered as the random access leader sequence of specializing in the via node use for random access leader sequence n the random access leader sequence afterwards that subscriber equipment uses;
Perhaps, with system can with whole random access leader sequences in n of the sequence number maximum as specializing in the random access leader sequence set that via node uses.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (20)
1. the method for an identification of base stations via node is characterized in that, a n random access leader sequence in base station is set to specialize in the random access leader sequence that via node uses, and described n is the integer more than or equal to 1, and this method comprises the steps:
Random access leader sequence information is carried in base station transmission system broadcasting in the described system broadcasts;
After random access leader sequence is received in the base station, judge whether the random access leader sequence of being received belongs to the described random access leader sequence that via node uses of specializing in, if then judge it is that via node initiates to insert at random.
2. method according to claim 1 is characterized in that, the random access leader sequence information of carrying in the described system broadcasts comprises the sequence number of the random access leader sequence of specializing in the via node use.
3. method according to claim 1 is characterized in that, the random access leader sequence information of carrying in the described system broadcasts comprises the sequence number of the random access leader sequence that uses for subscriber equipment.
4. method according to claim 3 is characterized in that, the random access leader sequence information of carrying in the described system broadcasts further comprises the described number n that specializes in the random access leader sequence of via node use.
5. according to claim 2,3 or 4 described methods, it is characterized in that, further carry in the described system broadcasts: with specialize in random access leader sequence that via node uses or for the random access leader sequence corresponding physical Random Access Channel running time-frequency resource position of subscriber equipment use.
6. base station comprises being used for to what the via node that inserts at random was provided with module being set, and it is characterized in that described base station also comprises:
Reserve module, specialize in the random access leader sequence that via node uses for the n that is used to store, described n is the integer more than or equal to 1;
Broadcast module is used for transmitting system broadcasting, carries random access leader sequence information in the described system broadcasts;
Receiver module is used to receive the random access leader sequence from via node or subscriber equipment;
Judge module is used to judge whether the random access leader sequence that described receiver module is received belongs to the random access leader sequence of described reservation module stores, if then send the indication information that the via node initiation inserts at random to the described module that is provided with;
The described module that is provided with is used for according to the indication information from judge module the via node that inserts at random being provided with.
7. base station according to claim 6 is characterized in that, the random access leader sequence information of carrying in the system broadcasts that described broadcast module sends comprises the sequence number of the random access leader sequence of specializing in the via node use.
8. base station according to claim 6 is characterized in that, the random access leader sequence information of carrying in the system broadcasts that described broadcast module sends comprises the sequence number of the random access leader sequence that uses for subscriber equipment.
9. base station according to claim 8 is characterized in that, the random access leader sequence information of carrying in the system broadcasts that described broadcast module sends further comprises the described number n that specializes in the random access leader sequence of via node use.
10. according to claim 7,8 or 9 described base stations, it is characterized in that, further carry in the system broadcasts that described broadcast module sends: with specialize in random access leader sequence that via node uses or for the random access leader sequence corresponding physical Random Access Channel running time-frequency resource position of subscriber equipment use.
11. a via node comprises the receiver module that is used to receive random access leader sequence information, is used to the access module at random initiating to insert at random, it is characterized in that described via node also comprises:
Processing module is used for after described receiver module receives random access leader sequence information, determines to specialize in the random access leader sequence set that via node uses;
Described access module is at random selected a random access leader sequence from the random access leader sequence set that described processing module is determined, and initiates to insert at random according to selected random access leader sequence.
12. via node according to claim 11 is characterized in that, described processing module comprises:
Processing unit one according to the number n of the random access leader sequence of specializing in the via node use that sets in advance, determines to specialize in the random access leader sequence set that via node uses.
13. via node according to claim 11 is characterized in that, comprises the number n of the random access leader sequence of specializing in the via node use in the random access leader sequence information that described receiver module receives;
Described processing module comprises:
Processing unit two is used for the number n of the random access leader sequence that receives according to described receiver module, determines to specialize in the random access leader sequence set that via node uses.
14. according to claim 12 or 13 described via nodes, it is characterized in that described processing unit one or processing unit two will be gathered as the random access leader sequence of specializing in the via node use for random access leader sequence n the random access leader sequence afterwards that subscriber equipment uses;
Perhaps, with system can with whole random access leader sequences in n of the sequence number maximum as specializing in the random access leader sequence set that via node uses.
15. the system of an identification of base stations via node comprises base station and via node, it is characterized in that,
A described base station n random access leader sequence is set to specialize in the random access leader sequence that via node uses, and described n is the integer more than or equal to 1, and random access leader sequence information is carried in base station transmission system broadcasting in the described system broadcasts; After random access leader sequence is received in the base station, judge whether the random access leader sequence of being received belongs to the described random access leader sequence that via node uses of specializing in, if then judge it is that via node initiates to insert at random;
Described via node receives after the random access leader sequence information, determine to specialize in the random access leader sequence set that via node uses, and from determined random access leader sequence set, select a random access leader sequence, and initiate to insert at random according to selected random access leader sequence.
16. system according to claim 15 is characterized in that, described base station comprises:
Reserve module, specialize in the random access leader sequence that via node uses for the n that is used to store, described n is the integer more than or equal to 1;
Broadcast module is used for transmitting system broadcasting, carries random access leader sequence information in the described system broadcasts;
Receiver module is used to receive the random access leader sequence from via node or subscriber equipment;
Judge module is used to judge whether the random access leader sequence that described receiver module is received belongs to the random access leader sequence of described reservation module stores, if then send the indication information that the via node initiation inserts at random to the described module that is provided with;
Module is set, is used for the via node that inserts at random being provided with according to indication information from judge module.
17. system according to claim 15 is characterized in that, described via node further comprises:
Receiver module is used to receive random access leader sequence information
Processing module is used for after described receiver module receives random access leader sequence information, determines to specialize in the random access leader sequence set that via node uses;
Access module is used for selecting a random access leader sequence from the random access leader sequence set that described processing module is determined, and initiates to insert at random according to selected random access leader sequence at random.
18. system according to claim 17 is characterized in that, described processing module comprises:
Processing unit one according to the number n of the random access leader sequence of specializing in the via node use that sets in advance, determines to specialize in the random access leader sequence set that via node uses.
19. system according to claim 17 is characterized in that, comprises the number n of the random access leader sequence of specializing in the via node use in the random access leader sequence information that described receiver module receives;
Described processing module comprises:
Processing unit two is used for the number n of the random access leader sequence that receives according to described receiver module, determines to specialize in the random access leader sequence set that via node uses.
20. according to claim 18 or 19 described systems, it is characterized in that described processing unit one or processing unit two will be gathered as the random access leader sequence of specializing in the via node use for random access leader sequence n the random access leader sequence afterwards that subscriber equipment uses;
Perhaps, with system can with whole random access leader sequences in n of the sequence number maximum as specializing in the random access leader sequence set that via node uses.
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