CN101873668B - Method, system and device for initiating random access - Google Patents
Method, system and device for initiating random access Download PDFInfo
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- CN101873668B CN101873668B CN200910082704A CN200910082704A CN101873668B CN 101873668 B CN101873668 B CN 101873668B CN 200910082704 A CN200910082704 A CN 200910082704A CN 200910082704 A CN200910082704 A CN 200910082704A CN 101873668 B CN101873668 B CN 101873668B
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Abstract
The invention relates to a wireless communication technology, in particular to a method, a system and a device for initiating random access through which eNB can determine the equipment for random access to be RN equipment when the RN equipment randomly accesses so as to shorten the time of the RN equipment from being electrified to work. The method of the embodiment comprises the following steps that: the RN equipment initiates random access to the eNB through a special random access resource, and the special random access resource is distributed to the RN equipment by the eNB; and the eNB determines the equipment for initiating random access to be the RN equipment according to the special random access resource used for initiating the random access. The method of the embodiment can shorten the time for the RN equipment from being electrified to working, and because the eNB can quite early identify that the RN equipment can first distribute resources for the RN equipment, the resource quality and the working stability of the RN equipment are ensured.
Description
Technical field
The present invention relates to wireless communication technology, the mthods, systems and devices that particularly a kind of initiation inserts at random.
Background technology
In GSM, carry out transmitting uplink data and need satisfy a kind of distinctive transmission conditions, i.e. uplink synchronous.The upward signal that its objective is the different terminals (UE) that makes from different distance can arrive the base station synchronously.
Uplink synchronous can be brought a lot of benefits to system: as reducing the interference of signal between adjacent time-slots, improve systematic function, simplify the design of base station etc.Therefore, be in the asynchronous regime terminal, before sending upstream data, need carry out uplink synchronous, could under the method for synchronization, carry out subsequent transmission then through random access procedure and network side.
At LTE (Long Term Evolution; Long Term Evolution) in; The fundamental mechanism of the random access scheme that adopts is: a plurality of alternative accesses at random in Preamble (targeting sequencing) sign indicating number; The terminal is selected one and transmission on RACH (Random Access Channel, RACH) at random, calculates the actual time of arrival of this Preamble sign indicating number and the deviation of Expected Arrival Time after network side is received; Then it is placed in accidental access response (the Random Access Response) message as TA (Timing Alignment, regularly adjustment amount) and sends to the terminal; The transmitting time of back according to TA adjustment upstream message received at the terminal, can set up the uplink synchronous with network side.
In LTE-A (Long Term Evolution-Advanced, long-term evolution upgrading) system, introduced RN (via node) equipment with increasing network coverage in order to improve throughput of system.As shown in Figure 1, eNB links core net (CN) through wireline interface; RN equipment is linked eNB through wave point; RN equipment or eNB are linked through wave point in the terminal.
In the LTE-A system, after the RN device power, carry out random access procedure and insert eNB at present; RN equipment is after inserting completion, through sending the node type of RRC (Radio Resource Control, Radio Resource control) message informing eNB oneself at random; ENB is configured RN equipment after identifying current access node and being RN equipment; After configuration was accomplished, RN equipment was started working.Because eNB need could obtain the node type of RN equipment after RN equipment is accomplished access at random.Make RN equipment arrive the chronic of work from power on.
In sum, eNB need could obtain the node type of RN equipment after RN equipment is accomplished access at random at present, has increased RN equipment and has arrived the time of work from power on.
Summary of the invention
The mthods, systems and devices that the embodiment of the invention provides a kind of initiation to insert at random, in order to when RN equipment inserts at random, eNB just can confirm that the equipment that inserts at random is RN equipment, arrives the time of work from power on thereby shortened RN equipment.
The method that a kind of initiation that the embodiment of the invention provides inserts at random, this method comprises:
Via node RN equipment initiates to insert at random to evolution base station eNB through dedicated random access resource, and said dedicated random access resource is that eNB is the RN devices allocation;
Said eNB confirms that according to initiating to insert at random employed dedicated random access resource the equipment of initiating to insert at random is RN equipment;
If said dedicated random access resource is special-purpose Preamble sign indicating number:
Said RN equipment comprised before eNB initiates to insert at random through dedicated random access resource:
Said eNB confirms at least one special-purpose Preamble sign indicating number, sends to comprise the definite special-purpose Preamble sign indicating number and the broadcast message of first specific identity, and said first specific identity is used for representing that this broadcast message is included as the special-purpose Preamble sign indicating number of RN devices allocation;
Said RN equipment initiates to insert at random to comprise to eNB through dedicated random access resource:
Said RN equipment is after receiving the broadcast message that comprises first specific identity; From this broadcast message, extract special-purpose Preamble sign indicating number; And from the special-purpose Preamble sign indicating number that extracts, select one, send the special-purpose Preamble sign indicating number of selecting to eNB through common PRACH running time-frequency resource.
The method that a kind of initiation that the embodiment of the invention provides inserts at random, this method comprises:
Via node RN equipment initiates to insert at random to evolution base station eNB through dedicated random access resource, and said dedicated random access resource is that eNB is the RN devices allocation;
Said eNB confirms that according to initiating to insert at random employed dedicated random access resource the equipment of initiating to insert at random is RN equipment;
If said dedicated random access resource is special-purpose PRACH running time-frequency resource:
Said RN equipment comprised before eNB initiates to insert at random through dedicated random access resource:
Said eNB is based on pre-configured special-purpose PRACH running time-frequency resource; Confirm the configuration information of special-purpose PRACH running time-frequency resource; Transmission comprises the configuration information of special-purpose PRACH running time-frequency resource and the broadcast message of second specific identity, and said second specific identity is used for representing that this broadcast message is included as the special-purpose PRACH running time-frequency resource of RN devices allocation;
Said RN equipment initiates to insert at random to comprise to eNB through dedicated random access resource:
Said RN equipment is after receiving the broadcast message that comprises second specific identity; From this broadcast message, extract the configuration information of special-purpose PRACH running time-frequency resource; Configuration information according to the special-purpose PRACH running time-frequency resource that extracts; Confirm special-purpose PRACH running time-frequency resource, and send common Preamble sign indicating number to eNB through special-purpose PRACH running time-frequency resource.
The system that a kind of initiation that the embodiment of the invention provides inserts at random, this system comprises:
Via node RN equipment is used for initiating to insert at random to evolution base station eNB through dedicated random access resource, and said dedicated random access resource is that eNB is the RN devices allocation;
ENB is used for confirming that according to initiating to insert at random employed dedicated random access resource the equipment of initiating to insert at random is RN equipment;
Said eNB also is used for:
Said dedicated random access resource is special-purpose Preamble sign indicating number; Confirm at least one special-purpose Preamble sign indicating number; And send and to comprise the definite special-purpose Preamble sign indicating number and the broadcast message of first specific identity, said first specific identity is used for representing that this broadcast message is included as the special-purpose Preamble sign indicating number of RN devices allocation;
Said RN equipment also is used for:
After receiving the broadcast message that comprises first specific identity, from this broadcast message, extract special-purpose Preamble sign indicating number, and from the special-purpose Preamble sign indicating number that extracts, select one, send the special-purpose Preamble sign indicating number of selecting to eNB through common PRACH running time-frequency resource.
The system that a kind of initiation that the embodiment of the invention provides inserts at random, this system comprises:
Via node RN equipment is used for initiating to insert at random to evolution base station eNB through dedicated random access resource, and said dedicated random access resource is that eNB is the RN devices allocation;
ENB is used for confirming that according to initiating to insert at random employed dedicated random access resource the equipment of initiating to insert at random is RN equipment;
Said eNB also is used for:
Said dedicated random access resource is special-purpose PRACH running time-frequency resource; Based on pre-configured special-purpose PRACH running time-frequency resource; Confirm the configuration information of special-purpose PRACH running time-frequency resource; Transmission comprises the configuration information of special-purpose PRACH running time-frequency resource and the broadcast message of second specific identity, and said second specific identity is used for representing that this broadcast message is included as the special-purpose PRACH running time-frequency resource of RN devices allocation;
Said RN equipment also is used for:
After receiving the broadcast message that comprises second specific identity; From this broadcast message, extract the configuration information of special-purpose PRACH running time-frequency resource; Configuration information according to the special-purpose PRACH running time-frequency resource that extracts; Confirm special-purpose PRACH running time-frequency resource, and send common Preamble sign indicating number to eNB through special-purpose PRACH running time-frequency resource.
A kind of via node RN equipment that the embodiment of the invention provides, this RN equipment comprises:
The private resource determination module is used for confirming dedicated random access resource that said dedicated random access resource is that evolution base station eNB is the RN devices allocation;
AM access module is used for initiating to insert at random to eNB through dedicated random access resource;
Said private resource determination module also is used for:
After the broadcast message of receiving from eNB that comprises first specific identity; From this broadcast message, extract special-purpose Preamble sign indicating number; And from the special-purpose Preamble sign indicating number that extracts, select one, wherein said first specific identity is used for representing that this broadcast message is included as the special-purpose Preamble sign indicating number of RN devices allocation;
Said AM access module also is used for:
Send the special-purpose Preamble sign indicating number of selecting to eNB through common PRACH running time-frequency resource.
A kind of via node RN equipment that the embodiment of the invention provides, this RN equipment comprises:
The private resource determination module is used for confirming dedicated random access resource that said dedicated random access resource is that evolution base station eNB is the RN devices allocation;
AM access module is used for initiating to insert at random to eNB through dedicated random access resource;
Said private resource determination module also is used for:
After receiving the broadcast message that comprises second specific identity; From this broadcast message, extract the configuration information of special-purpose PRACH running time-frequency resource; Configuration information according to the special-purpose PRACH running time-frequency resource that extracts; Confirm special-purpose PRACH running time-frequency resource, wherein said second specific identity is used for representing that this broadcast message is included as the special-purpose PRACH running time-frequency resource of RN devices allocation;
Said AM access module also is used for:
Send common Preamble sign indicating number through special-purpose PRACH running time-frequency resource to eNB.
A kind of evolution base station eNB that the embodiment of the invention provides, this eNB comprises:
Receiver module is used to receive the access of initiating from via node RN equipment at random;
The equipment determination module is used for confirming that according to initiating to insert at random employed dedicated random access resource the equipment of initiating to insert at random is RN equipment;
Said eNB also comprises:
First determination module, being used for said dedicated random access resource is special-purpose Preamble sign indicating number, confirms at least one special-purpose Preamble sign indicating number;
First notification module is used to send and comprises the definite special-purpose Preamble sign indicating number and the broadcast message of first specific identity, and said first specific identity is used for representing that this broadcast message is included as the special-purpose Preamble sign indicating number of RN devices allocation.
A kind of evolution base station eNB that the embodiment of the invention provides, this eNB comprises:
Receiver module is used to receive the access of initiating from via node RN equipment at random;
The equipment determination module is used for confirming that according to initiating to insert at random employed dedicated random access resource the equipment of initiating to insert at random is RN equipment;
Said eNB also comprises:
Second determination module, being used for said dedicated random access resource is special-purpose PRACH running time-frequency resource, according to pre-configured special-purpose PRACH running time-frequency resource, confirms the configuration information of special-purpose PRACH running time-frequency resource;
Second notification module is used to send the configuration information that comprises special-purpose PRACH running time-frequency resource and the broadcast message of second specific identity, and said second specific identity is used for representing that this broadcast message is included as the special-purpose PRACH running time-frequency resource of RN devices allocation.
Embodiment of the invention via node RN equipment initiates to insert at random to evolution base station eNB through dedicated random access resource, and said dedicated random access resource is that eNB is the RN devices allocation; Said eNB confirms that according to initiating to insert at random employed dedicated random access resource the equipment of initiating to insert at random is RN equipment.Because when RN equipment inserts at random; ENB just can confirm that the equipment that inserts at random is RN equipment; Arrive the time of work from power on thereby shortened RN equipment, and early identify RN equipment, so can be preferably RN devices allocation resource because eNB can hand over; Guarantee the resource quality of RN equipment and the stability of RN equipment work, further improved user experience.
Description of drawings
Fig. 1 is a LTE-A system configuration sketch map;
Fig. 2 initiates the system configuration sketch map of access at random for the embodiment of the invention;
Fig. 3 is the structural representation of embodiment of the invention RN equipment;
Fig. 4 is the structural representation of embodiment of the invention eNB;
Fig. 5 initiates the method flow sketch map of access at random for the embodiment of the invention.
Embodiment
Embodiment of the invention RN equipment initiates to insert at random to evolution base station eNB through dedicated random access resource; ENB confirms that according to initiating to insert at random employed dedicated random access resource the equipment of initiating to insert at random is RN equipment.Because when RN equipment inserted at random, eNB just can confirm that the equipment that inserts at random is RN equipment, arrives the time of work from power on thereby shortened RN equipment.
Wherein, dedicated random access resource is that eNB is the RN devices allocation.
Below in conjunction with Figure of description the embodiment of the invention is described in further detail.
As shown in Figure 2, the system that the embodiment of the invention is initiated to insert at random comprises: RN equipment 10 and eNB20.
Wherein, dedicated random access resource is that eNB is the RN devices allocation.
That is to say, when eNB 20 inserts through dedicated random access resource at definite equipment at random, confirm that this equipment is RN equipment 10.
As shown in Figure 3, the RN equipment of the embodiment of the invention comprises: private resource determination module 100 and AM access module 110.
Private resource determination module 100 is used for confirming dedicated random access resource.
Wherein, dedicated random access resource is that eNB is the RN devices allocation.
Dedicated random access resource includes but not limited to one or more in the following resource:
Special-purpose Preamble sign indicating number, special-purpose PRACH (Packet Random Access Channel, Packet Random Access Channel) running time-frequency resource.
If dedicated random access resource is special-purpose Preamble sign indicating number; Private resource determination module 100 is after the broadcast message of receiving from eNB that comprises first specific identity; From this broadcast message, extract special-purpose Preamble sign indicating number, and from the special-purpose Preamble sign indicating number that extracts, select one.
Wherein, first specific identity is used for representing that this broadcast message is included as the special-purpose Preamble sign indicating number of RN devices allocation.
In the practical implementation process, the configuration information of common PRACH running time-frequency resource also is that eNB passes through the broadcast message transmission, and purpose is to insert in order to notify terminal and RN equipment to send at random through common PRACH running time-frequency resource.Then private resource determination module 100 is according to the configuration information of the common PRACH running time-frequency resource of receiving; Confirm corresponding common PRACH running time-frequency resource; Not having specific identity in the broadcast message owing to the configuration information that comprises common PRACH running time-frequency resource, is the configuration information of common PRACH running time-frequency resource so private resource determination module 100 is known in this broadcast message.
Accordingly, AM access module 110 is sent the special-purpose Preamble sign indicating number that private resource determination module 100 is selected through common PRACH running time-frequency resource to eNB.
If dedicated random access resource is special-purpose PRACH running time-frequency resource; Private resource determination module 100 is after the broadcast message of receiving from eNB that comprises second specific identity; From this broadcast message, extract the configuration information of special-purpose PRACH running time-frequency resource; According to the configuration information of the special-purpose PRACH running time-frequency resource that extracts, confirm special-purpose PRACH running time-frequency resource.
Wherein, second specific identity is used for representing that this broadcast message is included as the special-purpose PRACH running time-frequency resource of RN devices allocation.
In the practical implementation process, common Preamble sign indicating number also is that eNB passes through the broadcast message transmission, and purpose is in order to notify the common Preamble sign indicating number of terminal and RN equipment to initiate to insert at random.Owing to not having specific identity in the broadcast message that comprises common Preamble sign indicating number, be common Preamble sign indicating number so private resource determination module 100 is known in this broadcast message, further extract common Preamble sign indicating number.
Accordingly, AM access module 110 is sent common Preamble sign indicating number through private resource determination module 100 definite special-purpose PRACH running time-frequency resources to eNB.
If dedicated random access resource is special-purpose Preamble sign indicating number and special-purpose PRACH running time-frequency resource, then private resource determination module 100 can be received the broadcast message of the configuration information that comprises first specific identity, the special-purpose Preamble sign indicating number of second specific identity and special-purpose PRACH running time-frequency resource.Further, private resource determination module 100 can extract special-purpose Preamble sign indicating number, and confirms special-purpose PRACH running time-frequency resource.
Accordingly, AM access module 110 can be sent special-purpose Preamble sign indicating number through special-purpose PRACH running time-frequency resource, also can send common Preamble sign indicating number through special-purpose PRACH running time-frequency resource, can also send special-purpose Preamble sign indicating number through common PRACH running time-frequency resource.Concrete which kind of mode of employing can be set as required or determined by the network side notice.
As shown in Figure 4, the eNB of the embodiment of the invention comprises: receiver module 200 and equipment determination module 210.
That is to say that equipment determination module 210 initiates to insert at random through dedicated random access resource at the equipment of receiving, confirms that this equipment is RN equipment.
Dedicated random access resource includes but not limited to one or more in the following resource:
Special-purpose Preamble sign indicating number, special-purpose PRACH running time-frequency resource.
If dedicated random access resource is special-purpose Preamble sign indicating number,, confirm that then this special use Preamble sign indicating number is sent by RN equipment if then equipment determination module 210 detects special-purpose Preamble sign indicating number on common PRACH running time-frequency resource;
If dedicated random access resource is special-purpose PRACH running time-frequency resource,, confirm that then this common Preamble sign indicating number is sent by RN equipment if then equipment determination module 210 detects common Preamble sign indicating number on special-purpose PRACH running time-frequency resource;
If dedicated random access resource is special-purpose Preamble sign indicating number and special-purpose PRACH running time-frequency resource, then whether equipment determination module 210 equipment that can insert at random through a kind of definite initiation in the top dual mode is RN equipment.
Wherein, before definite RN equipment, eNB can also be notified to dedicated random access resource RN equipment.
If dedicated random access resource is special-purpose Preamble sign indicating number, the eNB of the embodiment of the invention can further include: first determination module 220 and first notification module 230.
First specific identity is used for representing that this broadcast message is included as the special-purpose Preamble sign indicating number of RN devices allocation.
Further; First notification module 230 also need send the configuration information that comprises common PRACH running time-frequency resource; Purpose is to insert in order to notify terminal and RN equipment to send at random through common PRACH running time-frequency resource; Not having specific identity in the broadcast message owing to the configuration information that comprises common PRACH running time-frequency resource, is the configuration information of common PRACH running time-frequency resource so RN equipment is known in this broadcast message.
Need to prove; Because the broadcast message that comprises first specific identity and special-purpose Preamble sign indicating number also can be received in the terminal; So first specific identity can be set at the terminal and can't discern; Perhaps the first specific identity indicating terminal is abandoned the broadcast message that comprises first specific identity, and concrete implementation can be formulated through agreement, also can notify the terminal by network side.
At present, the network side meeting is according to whole root arrangement sets, and cyclic shift (Ncs) obtains all common Preamble sign indicating numbers.Network side can be given the targeting sequencing that 64 common Preamble sign indicating numbers of each cell allocation insert as the terminal at random then, and promptly 64 common Preamble sign indicating numbers form a set, distribute to a sub-district.
In all common Preamble sign indicating numbers that network side obtains; Some common Preamble sign indicating number is not distribute to the sub-district; The embodiment of the invention is confirmed special-purpose common Preamble sign indicating number from this part common Preamble sign indicating number; Such benefit is when guaranteeing that eNB can quick identification goes out the RN node, can not have any impact to the access performance at random in the present sub-district, further can also guarantee the access performance at random at terminal.
The mode of concrete definite special-purpose Preamble sign indicating number has a variety of, enumerates several kinds below and describes.
Mode one, first determination module 220 are from all common Preamble sign indicating numbers of system; Confirm the unallocated common Preamble sign indicating number of giving the sub-district; From unallocated the giving of confirming the common Preamble sign indicating number of sub-district, select at least one common Preamble sign indicating number as special-purpose Preamble sign indicating number.
Because system as a set, suppose a total P common Preamble sign indicating number with 64 common Preamble sign indicating numbers, then common Preamble sign indicating number is gathered N=P/64 (if aliquant then round).
Mode two can be selected special-purpose Preamble sign indicating number from common Preamble sign indicating number set.
Mode two, first determination module 220 are from all common Preamble sign indicating number set of system; Confirm unallocated common Preamble sign indicating number set of giving the sub-district; From the unallocated common Preamble sign indicating number set of confirming, select at least one common Preamble sign indicating number as special-purpose Preamble sign indicating number to the sub-district.
Situation to above-described common Preamble sign indicating number set N=P/64 (if aliquant then round); If P/64 is aliquant; Have the common Preamble sign indicating number of residue and do not belong to any common Preamble sign indicating number set; Mode three can be utilized this part common Preamble sign indicating number, confirms special-purpose Preamble sign indicating number.
Mode three, first determination module 220 are from all common Preamble sign indicating numbers of system; Confirm the unallocated common Preamble sign indicating number of giving the sub-district and not belonging to common Preamble sign indicating number set, from the common Preamble sign indicating number of confirming, select at least one common Preamble sign indicating number as special-purpose Preamble sign indicating number.
Because mode three is never to belong in the common Preamble sign indicating number of residue of any common Preamble sign indicating number set to confirm special-purpose Preamble sign indicating number; The quantity of the quantity of common Preamble sign indicating number less than the special-purpose Preamble sign indicating number of needs might occur remaining, this is also need from other common Preamble sign indicating number set, confirm special-purpose Preamble sign indicating number.
If the unallocated quantity of common Preamble sign indicating number of giving the sub-district and not belonging to common Preamble sign indicating number set that mode four is confirmed is less than the quantity of the special-purpose Preamble sign indicating number of needs; First determination module 220 with unallocated all common Preamble sign indicating numbers of giving the sub-district and not belonging to common Preamble sign indicating number set as special-purpose Preamble sign indicating number, and with at least one the common Preamble sign indicating number at least one unallocated common Preamble sign indicating number set of giving the sub-district as special-purpose Preamble sign indicating number;
The quantity sum of the special-purpose Preamble sign indicating number that wherein, obtains is not less than the quantity of the special-purpose Preamble sign indicating number that needs.
Mode one～mode four all is from the common Preamble sign indicating number of a pile, to select special-purpose Preamble sign indicating number.Also having a kind of preferable mode is after confirming special-purpose Preamble sign indicating number; Quantity according to the sub-district; Special-purpose Preamble sign indicating number is divided into a plurality of special-purpose Preamble sign indicating number set (quantity of Preamble sign indicating number set is not less than the quantity of sub-district); The special-purpose Preamble sign indicating number set of one of each cell allocation then, when reinforming special-purpose Preamble sign indicating number, the notification message of each sub-district carries the corresponding Preamble sign indicating number set in this sub-district.The interference of the special-purpose Preamble sign indicating number in the further minimizing minizone of such benefit guarantees that the special-purpose Preamble sign indicating number between the adjacent RN does not repeat.
Owing to 64 common Preamble sign indicating numbers in the common Preamble sign indicating number set of distributing to a sub-district are produced by certain several sequence; And the common Preamble sign indicating number that these several sequences produce might be greater than 64, and the embodiment of the invention unnecessary common Preamble sign indicating number that can these several sequences be produced (promptly not the common Preamble sign indicating number in the common Preamble sign indicating number of sub-district is gathered) is as the special-purpose Preamble sign indicating number of this sub-district like this.Can directly confirm sub-district corresponding special Preamble sign indicating number like this.
Mode five, first determination module 220 confirm to distribute to the common Preamble sign indicating number set of sub-district; And the root sequence of confirming to produce common Preamble sign indicating number in this common Preamble sign indicating number set; The quantity of all common Preamble sign indicating numbers that the root sequence of confirming produces greater than the common Preamble sign indicating number set of confirming in during the quantity of common Preamble sign indicating number, at least one common Preamble sign indicating number that the root sequence is produced is as special-purpose Preamble sign indicating number.
Wherein, special-purpose Preamble sign indicating number does not belong to the common Preamble sign indicating number set of this sub-district, and the special-purpose Preamble sign indicating number of confirming is for the RN devices allocation of this sub-district.
Concrete what the special-purpose Preamble sign indicating numbers of selecting can be set as required, such as confirming according to the district's number and the number of cells of RN equipment in little, can also confirm according to the number of the RN equipment in the system.
Need to prove that the embodiment of the invention also can be configured among the eNB by the special-purpose Preamble sign indicating number of artificial selection then, the mode of selection and top similar repeats no more.
If dedicated random access resource is special-purpose PRACH running time-frequency resource, the eNB of the embodiment of the invention can further include: second determination module 240 and second notification module 250.
Promptly there is not interference in the special-purpose PRACH running time-frequency resource of configuration as long as do not overlap with other common PRACH running time-frequency resource of this sub-district.Under this prerequisite, special-purpose PRACH resource can be configured in whole system.
Wherein, second specific identity is used for representing that this broadcast message is included as the special-purpose PRACH running time-frequency resource of RN devices allocation.
Further; Second notification module 250 also need send the broadcast message that comprises common Preamble sign indicating number; Purpose is in order to notify terminal and RN equipment to initiate to insert at random through common Preamble sign indicating number; Owing to not having specific identity in the broadcast message that comprises common Preamble sign indicating number, be common Preamble sign indicating number so RN equipment is known in this broadcast message.
Need to prove; Because the broadcast message of the configuration information that comprises second specific identity and special-purpose PRACH running time-frequency resource also can be received in the terminal; So second specific identity can be set at the terminal and can't discern; Perhaps the second specific identity indicating terminal is abandoned the broadcast message that comprises second specific identity, and concrete implementation can be formulated through agreement, also can notify the terminal by network side.
If dedicated random access resource is special-purpose Preamble sign indicating number and special-purpose PRACH running time-frequency resource; The eNB of the embodiment of the invention can comprise: first determination module 220, first notification module 230, second determination module 240 and second notification module 250; Wherein the function of each module is identical with above-described function, repeats no more.
As shown in Figure 5, the method that the embodiment of the invention is initiated to insert at random comprises the following steps:
Wherein, dedicated random access resource is that eNB is the RN devices allocation.
That is to say that eNB initiates to insert at random through dedicated random access resource at the equipment of receiving, confirms that this equipment is RN equipment.
In the practical implementation process, eNB is a RN equipment at definite this equipment, and RN equipment accomplish insert at random after, RN equipment is configured.
Dedicated random access resource includes but not limited to one or more in the following resource:
Special-purpose Preamble sign indicating number, special-purpose PRACH running time-frequency resource.
If dedicated random access resource is special-purpose Preamble sign indicating number, can further include before the step 501:
Step a500, eNB confirm at least one special-purpose Preamble sign indicating number.
Step b500, eNB send and comprise the definite special-purpose Preamble sign indicating number and the broadcast message of first specific identity.
Wherein, first specific identity is used for representing that this broadcast message is included as the special-purpose Preamble sign indicating number of RN devices allocation.
Further; ENB also need send the configuration information that comprises common PRACH running time-frequency resource among the step b500; Purpose is to insert in order to notify terminal and RN equipment to send at random through common PRACH running time-frequency resource; Not having specific identity in the broadcast message owing to the configuration information that comprises common PRACH running time-frequency resource, is the configuration information of common PRACH running time-frequency resource so RN equipment is known in this broadcast message.
Need to prove; Because the broadcast message that comprises first specific identity and special-purpose Preamble sign indicating number also can be received in the terminal; So first specific identity can be set at the terminal and can't discern; Perhaps the first specific identity indicating terminal is abandoned the broadcast message that comprises first specific identity, and concrete implementation can be formulated through agreement, also can notify the terminal by network side.
Not having specific identity in the broadcast message owing to the configuration information that comprises common PRACH running time-frequency resource, is the configuration information of common PRACH running time-frequency resource so RNs equipment is known in this broadcast message.
Accordingly; RN equipment is after receiving the broadcast message that comprises first specific identity in the step 501; From this broadcast message, extract special-purpose Preamble sign indicating number; And from the special-purpose Preamble sign indicating number that extracts, select one, send the special-purpose Preamble sign indicating number of selecting to eNB through common PRACH running time-frequency resource.
If eNB detects special-purpose Preamble sign indicating number in the step 502 on common PRACH running time-frequency resource, confirm that then this special use Preamble sign indicating number is sent by RN equipment.
If dedicated random access resource is the special-purpose PRACH running time-frequency resource of using, can further include before the step 501:
Step c500, eNB confirm the configuration information of special-purpose PRACH running time-frequency resource according to pre-configured special-purpose PRACH running time-frequency resource.
Promptly there is not interference in the special-purpose PRACH running time-frequency resource of configuration as long as do not overlap with other common PRACH running time-frequency resource of this sub-district.Under this prerequisite, special-purpose PRACH resource can be configured in whole system.
Steps d 500, eNB send and comprise the configuration information of special-purpose PRACH running time-frequency resource and the broadcast message of second specific identity.
Wherein, second specific identity is used for representing that this broadcast message is included as the special-purpose PRACH running time-frequency resource of RN devices allocation.
Further; ENB also need send the broadcast message that comprises common Preamble sign indicating number in the steps d 500; Purpose is in order to notify terminal and RN equipment to initiate to insert at random through common Preamble sign indicating number; Owing to not having specific identity in the broadcast message that comprises common Preamble sign indicating number, be common Preamble sign indicating number so RN equipment is known in this broadcast message.
Need to prove; Because the broadcast message of the configuration information that comprises second specific identity and special-purpose PRACH running time-frequency resource also can be received in the terminal; So second specific identity can be set at the terminal and can't discern; Perhaps the second specific identity indicating terminal is abandoned the broadcast message that comprises second specific identity, and concrete implementation can be formulated through agreement, also can notify the terminal by network side.
Owing to not having specific identity in the broadcast message that comprises common Preamble sign indicating number, be common Preamble sign indicating number so eNB knows in this broadcast message, further extract common Preamble sign indicating number.
Accordingly; RN equipment is after receiving the broadcast message that comprises second specific identity in the step 501; From this broadcast message, extract the configuration information of special-purpose PRACH running time-frequency resource; According to the configuration information of the special-purpose PRACH running time-frequency resource that extracts, confirm special-purpose PRACH running time-frequency resource, and send common Preamble sign indicating number to eNB through special-purpose PRACH running time-frequency resource.
If eNB detects common Preamble sign indicating number in the step 502 on special-purpose PRACH running time-frequency resource, confirm that then this common Preamble sign indicating number is sent by RN equipment.
If dedicated random access resource is special-purpose Preamble sign indicating number and special-purpose PRACH running time-frequency resource, then can further include step a500～step c500 before the step 501.
Accordingly, RN equipment can be received the broadcast message of the configuration information that comprises special-purpose Preamble sign indicating number of first specific identity, second specific identity and special-purpose PRACH running time-frequency resource in the step 501.Further, RN equipment can extract special-purpose Preamble sign indicating number, and confirms special-purpose PRACH running time-frequency resource.
RN equipment can send special-purpose Preamble sign indicating number through special-purpose PRACH running time-frequency resource in the step 501, also can send common Preamble sign indicating number through special-purpose PRACH running time-frequency resource, can also send special-purpose Preamble sign indicating number through common PRACH running time-frequency resource.Concrete which kind of mode of employing can be set as required or determined by the network side notice.
In the step 502, eNB can confirm whether the equipment of initiating to insert at random is RN equipment through a kind of definite mode in top two kinds.
Wherein, before definite RN equipment, eNB can also be notified to dedicated random access resource RN equipment.
At present, network side can be based on whole root arrangement sets, and cyclic shift obtains all common Preamble sign indicating numbers.Network side can be given the targeting sequencing that 64 common Preamble sign indicating numbers of each cell allocation insert as the terminal at random then, and promptly 64 common Preamble sign indicating numbers form a set, distribute to a sub-district.
In all common Preamble sign indicating numbers that network side obtains; Some common Preamble sign indicating number is not distribute to the sub-district; The embodiment of the invention is confirmed special-purpose common Preamble sign indicating number from this part common Preamble sign indicating number; Such benefit is when guaranteeing that eNB can quick identification goes out the RN node, can not have any impact to the access performance at random in the present sub-district, further can also guarantee the access performance at random at terminal.
To confirm that specifically the mode of special-purpose Preamble sign indicating number has a variety of for eNB among the step a500, enumerate several kinds below and describe.
Mode one, eNB confirm the unallocated common Preamble sign indicating number of giving the sub-district from all common Preamble sign indicating numbers of system, from unallocated the giving of confirming the common Preamble sign indicating number of sub-district, select at least one common Preamble sign indicating number as special-purpose Preamble sign indicating number.
Because system as a set, suppose a total P common Preamble sign indicating number with 64 common Preamble sign indicating numbers, then common Preamble sign indicating number is gathered N=P/64 (if aliquant then round).
Mode two can be selected special-purpose Preamble sign indicating number from common Preamble sign indicating number set.
Mode two, eNB are from all common Preamble sign indicating number set of system; Confirm unallocated common Preamble sign indicating number set of giving the sub-district; From the unallocated common Preamble sign indicating number set of confirming, select at least one common Preamble sign indicating number as special-purpose Preamble sign indicating number to the sub-district.
Situation to above-described common Preamble sign indicating number set N=P/64 (if aliquant then round); If P/64 is aliquant; Have the common Preamble sign indicating number of residue and do not belong to any common Preamble sign indicating number set; Mode three can be utilized this part common Preamble sign indicating number, confirms special-purpose Preamble sign indicating number.
Mode three, eNB are from all common Preamble sign indicating numbers of system; Confirm the unallocated common Preamble sign indicating number of giving the sub-district and not belonging to common Preamble sign indicating number set, from the common Preamble sign indicating number of confirming, select at least one common Preamble sign indicating number as special-purpose Preamble sign indicating number.
Because mode three is never to belong in the common Preamble sign indicating number of residue of any common Preamble sign indicating number set to confirm special-purpose Preamble sign indicating number; The quantity of the quantity of common Preamble sign indicating number less than the special-purpose Preamble sign indicating number of needs might occur remaining, this is also need from other common Preamble sign indicating number set, confirm special-purpose Preamble sign indicating number.
If the unallocated quantity of common Preamble sign indicating number of giving the sub-district and not belonging to common Preamble sign indicating number set that mode four is confirmed is less than the quantity of the special-purpose Preamble sign indicating number of needs; ENB0 with unallocated all common Preamble sign indicating numbers of giving the sub-district and not belonging to common Preamble sign indicating number set as special-purpose Preamble sign indicating number, and with at least one the common Preamble sign indicating number at least one unallocated common Preamble sign indicating number set of giving the sub-district as special-purpose Preamble sign indicating number;
The quantity sum of the special-purpose Preamble sign indicating number that wherein, obtains is not less than the quantity of the special-purpose Preamble sign indicating number that needs.
Mode one～mode four all is from the common Preamble sign indicating number of a pile, to select special-purpose Preamble sign indicating number.Also having a kind of preferable mode is after confirming special-purpose Preamble sign indicating number; Quantity according to the sub-district; Special-purpose Preamble sign indicating number is divided into a plurality of special-purpose Preamble sign indicating number set (quantity of Preamble sign indicating number set is not less than the quantity of sub-district); The special-purpose Preamble sign indicating number set of one of each cell allocation then, when reinforming special-purpose Preamble sign indicating number, the notification message of each sub-district carries the corresponding Preamble sign indicating number set in this sub-district.The interference of the special-purpose Preamble sign indicating number in the further minimizing minizone of such benefit guarantees that the special-purpose Preamble sign indicating number between the adjacent RN does not repeat.
Owing to 64 common Preamble sign indicating numbers in the common Preamble sign indicating number set of distributing to a sub-district are produced by certain several sequence; And the common Preamble sign indicating number that these several sequences produce might be greater than 64, and the embodiment of the invention unnecessary common Preamble sign indicating number that can these several sequences be produced (promptly not the common Preamble sign indicating number in the common Preamble sign indicating number of sub-district is gathered) is as the special-purpose Preamble sign indicating number of this sub-district like this.Can directly confirm sub-district corresponding special Preamble sign indicating number like this.
Mode five, eNB confirm to distribute to the common Preamble sign indicating number set of sub-district; And the root sequence of confirming to produce common Preamble sign indicating number in this common Preamble sign indicating number set; The quantity of all common Preamble sign indicating numbers that the root sequence of confirming produces greater than the common Preamble sign indicating number set of confirming in during the quantity of common Preamble sign indicating number, at least one common Preamble sign indicating number that the root sequence is produced is as special-purpose Preamble sign indicating number.
Wherein, special-purpose Preamble sign indicating number does not belong to the common Preamble sign indicating number set of this sub-district, and the special-purpose Preamble sign indicating number of confirming is for the RN devices allocation of this sub-district.
Concrete what the special-purpose Preamble sign indicating numbers of selecting can be set as required, such as confirming according to the district's number and the number of cells of RN equipment in little, can also confirm according to the number of the RN equipment in the system.
Need to prove that the embodiment of the invention also can be configured among the eNB by the special-purpose Preamble sign indicating number of artificial selection then, the mode of selection and top similar repeats no more.
From the foregoing description, can find out: embodiment of the invention via node RN equipment initiates to insert at random to evolution base station eNB through dedicated random access resource, and said dedicated random access resource is that eNB is the RN devices allocation; Said eNB confirms that according to initiating to insert at random employed dedicated random access resource the equipment of initiating to insert at random is RN equipment.Because when RN equipment inserts at random; ENB just can confirm that the equipment that inserts at random is RN equipment; Arrive the time of work from power on thereby shortened RN equipment, and early identify RN equipment, so can be preferably RN devices allocation resource because eNB can hand over; Guarantee the resource quality of RN equipment and the stability of RN equipment work, further improved user experience.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, belong within the scope of claim of the present invention and equivalent technologies thereof if of the present invention these are revised with modification, then the present invention also is intended to comprise these changes and modification interior.
Claims (23)
1. the method that initiation inserts at random is characterized in that, this method comprises:
Via node RN equipment initiates to insert at random to evolution base station eNB through dedicated random access resource, and said dedicated random access resource is that eNB is the RN devices allocation;
Said eNB confirms that according to initiating to insert at random employed dedicated random access resource the equipment of initiating to insert at random is RN equipment;
If said dedicated random access resource is special-purpose Preamble sign indicating number:
Said RN equipment comprised before eNB initiates to insert at random through dedicated random access resource:
Said eNB confirms at least one special-purpose Preamble sign indicating number, sends to comprise the definite special-purpose Preamble sign indicating number and the broadcast message of first specific identity, and said first specific identity is used for representing that this broadcast message is included as the special-purpose Preamble sign indicating number of RN devices allocation;
Said RN equipment initiates to insert at random to comprise to eNB through dedicated random access resource:
Said RN equipment is after receiving the broadcast message that comprises first specific identity; From this broadcast message, extract special-purpose Preamble sign indicating number; And from the special-purpose Preamble sign indicating number that extracts, select one, send the special-purpose Preamble sign indicating number of selecting to eNB through common PRACH running time-frequency resource.
2. the method for claim 1 is characterized in that, said eNB confirms that at least one special-purpose Preamble sign indicating number comprises:
Said eNB confirms the unallocated common Preamble sign indicating number of giving the sub-district from all common Preamble sign indicating numbers of system;
Unallocated give the common Preamble sign indicating number of sub-district of said eNB from confirming selects at least one common Preamble sign indicating number as special-purpose Preamble sign indicating number.
3. the method for claim 1 is characterized in that, said eNB confirms that at least one special-purpose Preamble sign indicating number comprises:
Said eNB confirms unallocated common Preamble sign indicating number set of giving the sub-district from all common Preamble sign indicating number set of system;
Said eNB selects at least one common Preamble sign indicating number as special-purpose Preamble sign indicating number from the unallocated common Preamble sign indicating number set of confirming to the sub-district.
4. the method for claim 1 is characterized in that, said eNB confirms that at least one special-purpose Preamble sign indicating number comprises:
Said eNB confirms the unallocated common Preamble sign indicating number of giving the sub-district and not belonging to common Preamble sign indicating number set from all common Preamble sign indicating numbers of system;
Said eNB selects at least one common Preamble sign indicating number as special-purpose Preamble sign indicating number from the common Preamble sign indicating number of confirming.
5. method as claimed in claim 4; It is characterized in that; If the unallocated quantity of confirming of common Preamble sign indicating number of giving the sub-district and not belonging to common Preamble sign indicating number set is less than the quantity of the special-purpose Preamble sign indicating number of needs; All common Preamble sign indicating numbers that said eNB will confirm are as special-purpose Preamble sign indicating number, and with at least one the common Preamble sign indicating number at least one unallocated common Preamble sign indicating number set of giving the sub-district as special-purpose Preamble sign indicating number;
The quantity sum of the special-purpose Preamble sign indicating number that wherein obtains is not less than the quantity of the special-purpose Preamble sign indicating number that needs.
6. the method for claim 1 is characterized in that, said eNB confirms that at least one special-purpose Preamble sign indicating number comprises:
Said eNB confirms to distribute to the common Preamble sign indicating number set of sub-district, and the root sequence of confirming to produce common Preamble sign indicating number in this common Preamble sign indicating number set;
Said eNB the quantity of all common Preamble sign indicating numbers that the root sequence of confirming produces greater than the common Preamble sign indicating number set of confirming in during the quantity of common Preamble sign indicating number, at least one common Preamble sign indicating number that said sequence produced is as special-purpose Preamble sign indicating number;
Wherein, said special-purpose Preamble sign indicating number does not belong to the common Preamble sign indicating number set of this sub-district, and the special-purpose Preamble sign indicating number of confirming is for the RN devices allocation of this sub-district.
7. the method that initiation inserts at random is characterized in that, this method comprises:
Via node RN equipment initiates to insert at random to evolution base station eNB through dedicated random access resource, and said dedicated random access resource is that eNB is the RN devices allocation;
Said eNB confirms that according to initiating to insert at random employed dedicated random access resource the equipment of initiating to insert at random is RN equipment;
If said dedicated random access resource is special-purpose PRACH running time-frequency resource:
Said RN equipment comprised before eNB initiates to insert at random through dedicated random access resource:
Said eNB is based on pre-configured special-purpose PRACH running time-frequency resource; Confirm the configuration information of special-purpose PRACH running time-frequency resource; Transmission comprises the configuration information of special-purpose PRACH running time-frequency resource and the broadcast message of second specific identity, and said second specific identity is used for representing that this broadcast message is included as the special-purpose PRACH running time-frequency resource of RN devices allocation;
Said RN equipment initiates to insert at random to comprise to eNB through dedicated random access resource:
Said RN equipment is after receiving the broadcast message that comprises second specific identity; From this broadcast message, extract the configuration information of special-purpose PRACH running time-frequency resource; Configuration information according to the special-purpose PRACH running time-frequency resource that extracts; Confirm special-purpose PRACH running time-frequency resource, and send common Preamble sign indicating number to eNB through special-purpose PRACH running time-frequency resource.
8. the system that initiation inserts at random is characterized in that, this system comprises:
Via node RN equipment is used for initiating to insert at random to evolution base station eNB through dedicated random access resource, and said dedicated random access resource is that eNB is the RN devices allocation;
ENB is used for confirming that according to initiating to insert at random employed dedicated random access resource the equipment of initiating to insert at random is RN equipment;
Said eNB also is used for:
Said dedicated random access resource is special-purpose Preamble sign indicating number; Confirm at least one special-purpose Preamble sign indicating number; And send and to comprise the definite special-purpose Preamble sign indicating number and the broadcast message of first specific identity, said first specific identity is used for representing that this broadcast message is included as the special-purpose Preamble sign indicating number of RN devices allocation;
Said RN equipment also is used for:
After receiving the broadcast message that comprises first specific identity, from this broadcast message, extract special-purpose Preamble sign indicating number, and from the special-purpose Preamble sign indicating number that extracts, select one, send the special-purpose Preamble sign indicating number of selecting to eNB through common PRACH running time-frequency resource.
9. system as claimed in claim 8 is characterized in that, said eNB is used for:
From all common Preamble sign indicating numbers of system; Confirm the unallocated common Preamble sign indicating number of giving the sub-district; From unallocated the giving of confirming the common Preamble sign indicating number of sub-district; Select at least one common Preamble sign indicating number as special-purpose Preamble sign indicating number, and send the broadcast message that comprises the special-purpose Preamble sign indicating number and first specific identity.
10. system as claimed in claim 8 is characterized in that, said eNB is used for:
From all common Preamble sign indicating number set of system; Confirm unallocated common Preamble sign indicating number set of giving the sub-district; From the unallocated common Preamble sign indicating number set of confirming to the sub-district; Select at least one common Preamble sign indicating number as special-purpose Preamble sign indicating number, and send the broadcast message that comprises the special-purpose Preamble sign indicating number and first specific identity.
11. system as claimed in claim 8 is characterized in that, said eNB is used for:
From all common Preamble sign indicating numbers of system; Confirm the unallocated common Preamble sign indicating number of giving the sub-district and not belonging to common Preamble sign indicating number set; From the common Preamble sign indicating number of confirming, select at least one common Preamble sign indicating number as special-purpose Preamble sign indicating number, and send the broadcast message that comprises the special-purpose Preamble sign indicating number and first specific identity.
12. system as claimed in claim 11; It is characterized in that; If the unallocated quantity of confirming of common Preamble sign indicating number of giving the sub-district and not belonging to common Preamble sign indicating number set is less than the quantity of the special-purpose Preamble sign indicating number of needs; All common Preamble sign indicating numbers that said eNB will confirm are as special-purpose Preamble sign indicating number, and with at least one the common Preamble sign indicating number at least one unallocated common Preamble sign indicating number set of giving the sub-district as special-purpose Preamble sign indicating number;
The quantity sum of the special-purpose Preamble sign indicating number that wherein obtains is not less than the quantity of the special-purpose Preamble sign indicating number that needs.
13. system as claimed in claim 8 is characterized in that, said eNB is used for:
Confirm to distribute to the common Preamble sign indicating number set of sub-district; And the root sequence of confirming to produce common Preamble sign indicating number in this common Preamble sign indicating number set; The quantity of all common Preamble sign indicating numbers that the root sequence of confirming produces greater than the common Preamble sign indicating number set of confirming in during the quantity of common Preamble sign indicating number; At least one common Preamble sign indicating number that said sequence produced is as special-purpose Preamble sign indicating number, and sends the broadcast message that comprises the special-purpose Preamble sign indicating number and first specific identity;
Wherein, said special-purpose Preamble sign indicating number does not belong to the common Preamble sign indicating number set of this sub-district, and the special-purpose Preamble sign indicating number of confirming is for the RN devices allocation of this sub-district.
14. the system that initiation inserts at random is characterized in that, this system comprises:
Via node RN equipment is used for initiating to insert at random to evolution base station eNB through dedicated random access resource, and said dedicated random access resource is that eNB is the RN devices allocation;
ENB is used for confirming that according to initiating to insert at random employed dedicated random access resource the equipment of initiating to insert at random is RN equipment;
Said eNB also is used for:
Said dedicated random access resource is special-purpose PRACH running time-frequency resource; Based on pre-configured special-purpose PRACH running time-frequency resource; Confirm the configuration information of special-purpose PRACH running time-frequency resource; Transmission comprises the configuration information of special-purpose PRACH running time-frequency resource and the broadcast message of second specific identity, and said second specific identity is used for representing that this broadcast message is included as the special-purpose PRACH running time-frequency resource of RN devices allocation;
Said RN equipment also is used for:
After receiving the broadcast message that comprises second specific identity; From this broadcast message, extract the configuration information of special-purpose PRACH running time-frequency resource; Configuration information according to the special-purpose PRACH running time-frequency resource that extracts; Confirm special-purpose PRACH running time-frequency resource, and send common Preamble sign indicating number to eNB through special-purpose PRACH running time-frequency resource.
15. a via node RN equipment is characterized in that, this RN equipment comprises:
The private resource determination module is used for confirming dedicated random access resource that said dedicated random access resource is that evolution base station eNB is the RN devices allocation;
AM access module is used for initiating to insert at random to eNB through dedicated random access resource;
Said private resource determination module also is used for:
After the broadcast message of receiving from eNB that comprises first specific identity; From this broadcast message, extract special-purpose Preamble sign indicating number; And from the special-purpose Preamble sign indicating number that extracts, select one, wherein said first specific identity is used for representing that this broadcast message is included as the special-purpose Preamble sign indicating number of RN devices allocation;
Said AM access module also is used for:
Send the special-purpose Preamble sign indicating number of selecting to eNB through common PRACH running time-frequency resource.
16. a via node RN equipment is characterized in that, this RN equipment comprises:
The private resource determination module is used for confirming dedicated random access resource that said dedicated random access resource is that evolution base station eNB is the RN devices allocation;
AM access module is used for initiating to insert at random to eNB through dedicated random access resource;
Said private resource determination module also is used for:
After receiving the broadcast message that comprises second specific identity; From this broadcast message, extract the configuration information of special-purpose PRACH running time-frequency resource; Configuration information according to the special-purpose PRACH running time-frequency resource that extracts; Confirm special-purpose PRACH running time-frequency resource, wherein said second specific identity is used for representing that this broadcast message is included as the special-purpose PRACH running time-frequency resource of RN devices allocation;
Said AM access module also is used for:
Send common Preamble sign indicating number through special-purpose PRACH running time-frequency resource to eNB.
17. an evolution base station eNB is characterized in that, this eNB comprises:
Receiver module is used to receive the access of initiating from via node RN equipment at random;
The equipment determination module is used for confirming that according to initiating to insert at random employed dedicated random access resource the equipment of initiating to insert at random is RN equipment;
Said eNB also comprises:
First determination module, being used for said dedicated random access resource is special-purpose Preamble sign indicating number, confirms at least one special-purpose Preamble sign indicating number;
First notification module is used to send and comprises the definite special-purpose Preamble sign indicating number and the broadcast message of first specific identity, and said first specific identity is used for representing that this broadcast message is included as the special-purpose Preamble sign indicating number of RN devices allocation.
18. eNB as claimed in claim 17 is characterized in that, said first determination module is used for:
From all common Preamble sign indicating numbers of system, confirm the unallocated common Preamble sign indicating number of giving the sub-district, from unallocated the giving of confirming the common Preamble sign indicating number of sub-district, select at least one common Preamble sign indicating number as special-purpose Preamble sign indicating number.
19. eNB as claimed in claim 17 is characterized in that, said first determination module is used for:
From all common Preamble sign indicating number set of system, confirm unallocated common Preamble sign indicating number set of giving the sub-district, from the unallocated common Preamble sign indicating number set of confirming, select at least one common Preamble sign indicating number as special-purpose Preamble sign indicating number to the sub-district.
20. eNB as claimed in claim 17 is characterized in that, said first determination module is used for:
From all common Preamble sign indicating numbers of system, confirm the unallocated common Preamble sign indicating number of giving the sub-district and not belonging to common Preamble sign indicating number set, from the common Preamble sign indicating number of confirming, select at least one common Preamble sign indicating number as special-purpose Preamble sign indicating number.
21. eNB as claimed in claim 20; It is characterized in that; If the unallocated quantity of confirming of common Preamble sign indicating number of giving the sub-district and not belonging to common Preamble sign indicating number set is less than the quantity of the special-purpose Preamble sign indicating number of needs; All common Preamble sign indicating numbers that said first determination module will be confirmed are as special-purpose Preamble sign indicating number, and with at least one the common Preamble sign indicating number at least one unallocated common Preamble sign indicating number set of giving the sub-district as special-purpose Preamble sign indicating number;
The quantity sum of the special-purpose Preamble sign indicating number that wherein obtains is not less than the quantity of the special-purpose Preamble sign indicating number that needs.
22. eNB as claimed in claim 17 is characterized in that, said first determination module is used for:
Confirm to distribute to the common Preamble sign indicating number set of sub-district; And the root sequence of confirming to produce common Preamble sign indicating number in this common Preamble sign indicating number set; The quantity of all common Preamble sign indicating numbers that the root sequence of confirming produces greater than the common Preamble sign indicating number set of confirming in during the quantity of common Preamble sign indicating number, at least one common Preamble sign indicating number that said sequence produced is as special-purpose Preamble sign indicating number;
Wherein, said special-purpose Preamble sign indicating number does not belong to the common Preamble sign indicating number set of this sub-district, and the special-purpose Preamble sign indicating number of confirming is for the RN devices allocation of this sub-district.
23. an evolution base station eNB is characterized in that, this eNB comprises:
Receiver module is used to receive the access of initiating from via node RN equipment at random;
The equipment determination module is used for confirming that according to initiating to insert at random employed dedicated random access resource the equipment of initiating to insert at random is RN equipment;
Said eNB also comprises:
Second determination module, being used for said dedicated random access resource is special-purpose PRACH running time-frequency resource, according to pre-configured special-purpose PRACH running time-frequency resource, confirms the configuration information of special-purpose PRACH running time-frequency resource;
Second notification module is used to send the configuration information that comprises special-purpose PRACH running time-frequency resource and the broadcast message of second specific identity, and said second specific identity is used for representing that this broadcast message is included as the special-purpose PRACH running time-frequency resource of RN devices allocation.
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| CN200910082704A CN101873668B (en) | 2009-04-24 | 2009-04-24 | Method, system and device for initiating random access |
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| CN101877907A (en) * | 2009-04-28 | 2010-11-03 | 大唐移动通信设备有限公司 | Method and system for base station to identify relay nodes, base station and replay nodes |
| CN103249169B (en) | 2012-02-03 | 2016-08-31 | 华为技术有限公司 | Method, base station and the subscriber equipment of transmission Stochastic accessing response message |
| CN106304391B (en) * | 2015-06-10 | 2021-03-30 | 中兴通讯股份有限公司 | PRACH access control method, access method and device |
| US10080243B2 (en) | 2015-07-17 | 2018-09-18 | Apple Inc. | Mechanisms to facilitate random access by link-budget-limited devices |
| CN106550396A (en) * | 2015-09-18 | 2017-03-29 | 中兴通讯股份有限公司 | Connection control method and communication node |
| CN112867157A (en) * | 2021-01-15 | 2021-05-28 | 中兴通讯股份有限公司 | Resource allocation and resource selection method, device and storage medium |
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