CN101282576B - Method for distributing random access channel resource - Google Patents
Method for distributing random access channel resource Download PDFInfo
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- CN101282576B CN101282576B CN 200710096244 CN200710096244A CN101282576B CN 101282576 B CN101282576 B CN 101282576B CN 200710096244 CN200710096244 CN 200710096244 CN 200710096244 A CN200710096244 A CN 200710096244A CN 101282576 B CN101282576 B CN 101282576B
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Abstract
The invention relates to a distributing method of random access channel resource. The resource distributing method comprises following steps: an access channel is divided into a plurality of subclass access channels; the subclass access channels are matched along with subclasses, and the subclasses are divided according to one or more properties following called subclass properties, and services are only allowed to try to access on the subclass access channels corresponding with related subclasses; medium resource is separately distributed for each subclass access channel. The method of the invention can flexibly distribute resources for a plurality of related properties, optimize resource distribution, reduce occupation for network capacity and improve access efficiency.
Description
Technical field
The present invention relates to the access technology in the communication system, relate in particular to a kind of resource allocation methods of RACH.
Background technology
In cellular system, has RACH (RACH).RACH is generally used for service request, position that user terminal (UE) carried out and moves the back to the network lastest imformation and the transmission of the signalings such as up link when pulling out electricity when start-up logging.
At present, realize that the core concept of RACH is: when remaining between the receiving-transmitting sides to deliver a letter the breath transmission, transmit leg takies Radio Resource randomly, sends information to be passed to the recipient, and wherein, Radio Resource can be frequency resource, time interval resource and code source etc.Its concrete implementation method is: all information to transmitting among the RACH are classified, and different information classifications has the different code word set, and RACH has certain Radio Resource, and this resource is further divided, and obtains the RACH subchannel.
Here; Transmit leg is user terminal normally, and the recipient is the base station normally, and user terminal is selected a code word randomly according to the classification of information to be passed from corresponding codeword set; And according to this code word generation solicitation message; When allowing to send this application message, user terminal is selected a RACH subchannel randomly, sends this application message.
After the base station receives this application message from the RACH subchannel; Utilize code word and this application message in the codeword set to carry out coherent detection; Obtain the code word that user terminal uses; Then, the base station generates acknowledge message based on this code word again, returns to user terminal; This acknowledge message can be the message that expression allows to send or refuse transmission; The previous code word of selecting of user terminal utilization oneself can obtain the affirmation message of base station, if allow to send, then user terminal sends its message to be passed; If refusal sends, then user terminal finishes the RACH process.
When two user terminal selecting during the same code word of same RACH subchannel and identical information classification set, will bump the reception solicitation message that the base station can not be correct or return acknowledge message.
The advantage of RACH is to possess the ability that guarantees certain service quality (QoS) at present; Promptly; User terminal message transmitted classification will be judged according to the code word that use at the terminal, family, when Radio Resource is not enough in the base station after obtaining the solicitation message of user terminal; The base station can be returned refusal to the low user of priority and send message, makes it not take too much Radio Resource.
The shortcoming that exists at present is: its priority of business professional or that different user sends of different business attribute is different; But for sending solicitation message; Be equal to from all user terminal RACH of base station services, and though therefore in the network Radio Resource how nervous, low priority traffice still can be competed the transmission solicitation message; The base station can only suppress the transmission of this type business through the notification message that sends the refusal transmission; The waste Radio Resource makes the capacity of network reduce the access efficiency variation.Yet, propose at present to solve the scheme of network capacity deficiency, problem that access efficiency is low as yet.
In addition, when having the base station of two communication systems in an area, if newly-established system needs compatible original system, then the accidental access method of newly-built erection system must consider that the terminal of previous system can normally insert at random.
Summary of the invention
To above deficiency, the technical problem that the present invention will solve provides a kind of distribution method of random access channel resource, is business with multiple relating attribute Resources allocation neatly, optimize allocation of resources.
In order to solve the problems of the technologies described above, the invention provides a kind of distribution method of random access channel resource, may further comprise the steps:
(a) access channel is divided into a plurality of subclass access channels;
(b) said subclass access channel and subclass are carried out corresponding, subclass below is called the subclass attribute and divides according to one or more attributes, only allows professionally on the corresponding subclass access channel of its related subclass, to attempt inserting;
(c) be respectively each subclass access channel and distribute the medium resource.
Further, said method also can have following characteristics:
Said subclass attribute is to divide according to a kind of or combination in any in service attribute, terminal attribute and the user property; Certain user terminal is initiated certain when professional, according to the i.e. subclass of this business association of the subclass that user property corresponded to of the terminal attribute at this professional service attribute, this terminal and relative users.
Further, said method also can have following characteristics:
In the step (b) said subclass access channel and subclass are carried out at once:
Each subclass access channel is corresponded to a sub-categories, as proprietary subclass access channel;
Perhaps, wherein parton classification access channel is corresponded to a plurality of subclass, as shared Sub classification access channel, other subclass access channel each corresponding to a sub-categories, as proprietary subclass access channel;
Perhaps, each subclass access channel is corresponded to a plurality of subclass, promptly all as shared Sub classification access channel.
Further, said method also can have following characteristics:
In the step (b); Subclass is divided according to service attribute, terminal attribute or user property; Said subclass access channel and subclass are being carried out at once, are that each subclass access channel is corresponded to a sub-categories, as proprietary subclass access channel.
Further, said method also can have following characteristics:
In the step (b); Said subclass access channel and subclass are being carried out at once; Be that parton classification access channel is wherein corresponded to a plurality of subclass; As shared Sub classification access channel, other subclass access channel each corresponding to a sub-categories, as proprietary subclass access channel; And, have a shared Sub classification access channel at least corresponding to all subclass or have at least a shared Sub classification access channel not have the subclass corresponding with special-purpose subclass access channel corresponding to all.
Further, said method also can have following characteristics:
In the step (b); Said subclass is to divide according to the combination of service attribute and terminal attribute; Said access channel comprises a plurality of proprietary subclass access channels, and the subclass that these proprietary subclass access channels are corresponding has first kind of terminal attribute and different service attribute, and said access channel also comprises at least one shared Sub classification access channel; This shared Sub classification access channel is corresponding to all subclass with second kind of terminal attribute, perhaps corresponding to all subclass;
Perhaps; Said access channel comprises a plurality of proprietary subclass access channels; The subclass that these proprietary subclass access channels are corresponding has first kind of terminal attribute and different service attribute; And said access channel also comprises at least two shared Sub classification access channels, and one of them shared Sub classification access channel is corresponding to all subclass with second kind of terminal attribute or all subclass, and another shared Sub classification access channel is corresponding to all subclass with first kind of terminal attribute.
Further, said method also can have following characteristics:
Said subclass attribute comprises service attribute, and this service attribute is the QoS grade, perhaps inserts the response speed requirement, perhaps QoS grade and the combination that inserts the response speed requirement.
Further, said method also can have following characteristics:
Step (b) is also further confirmed the priority level of each sub-categories; It is being after each subclass access channel distributes medium resource, also adaptively following one or more parameters to be adjusted in the step (c): the corresponding relation of the quantity of subclass access channel, subclass access channel and subclass and be the size of the medium resource of subclass access channel distribution.
Further, said method also can have following characteristics:
The self adaptation adjustment of carrying out in the step (c) comprises a kind of or combination in any in the following mode:
1) there is the medium resource and to transmit the channel resource of corresponding type of various-service saturated when a certain subclass access channel; Reduce this subclass access channel and have the medium resource this moment, gives other subclass access channel or traffic transmission channel with the medium resource allocation that has more;
2) if the corresponding subclass access channel of higher priority business classification is in congestion state; Then reduce the medium resource of the corresponding subclass access channel of the lower class of service of priority, and the medium resource allocation that has more is given on the corresponding subclass access channel of higher priority business classification;
3) the subclass access channel when a certain class of service correspondence is in congestion state; And other subclass access channel then reduces the medium resource of idle subclass access channel and gives congested subclass access channel with the medium resource allocation that has more when relatively idle;
4) if the resource that the more and congested subclass access channel of the medium resource that idle subclass access channel distributes distributes is less, then change the corresponding relation of subclass access channel and class of service.
5) when all kinds of professional trial access intensity are low; Can reduce quantity or medium resource size or the channel quantity and the medium resource size of subclass access channel; Increase shared Sub classification access channel medium resource; A kind of special situation is a shared Sub classification access channel only to be set or to delete other subclass access channels; A shared Sub classification access channel only is set; And give this shared Sub classification access channel with the medium resource allocation of all RACH channels, this shared Sub classification access channel allows all categories business to attempt inserting above that, professionally attempts inserting intensity when higher when one or more in the shared Sub classification access channel; It is corresponding with these one or more business that new one or more proprietary subclass access channel is set, and give this new one or more proprietary subclass access channel with the part or all of medium resource allocation in the said shared Sub classification access channel.
Through technique scheme of the present invention; Can improve the access capacity of the high business of priority, further, can be through adaptive adjustment; Can solve the collision probability that reduces the application information that user terminal sent; Reduced the taking of network capacity, and improved access efficiency, be specially adapted in the 4th third-generation mobile communication system.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the flow chart of the accidental access method of the embodiment of the invention.
Embodiment
To combine accompanying drawing and embodiment that technical scheme of the present invention is explained in more detail below.
User's initial access also can be regarded a kind of of service access as, and accidental access method of the present invention is as shown in Figure 1, may further comprise the steps:
Step S102, access device is divided into a plurality of subclass access channels (each subclass access channel can comprise one or more subchannels) with access channel;
Access device can be base station (BS) or access point (AP).
Step S104; Carry out corresponding with subclass said subclass access channel; Subclass can be based on one or more attributes; Divide like one in service attribute, terminal attribute and the user property (below be called the subclass attribute) or combination in any, only allow professionally on the corresponding subclass access channel of its related subclass, to attempt inserting;
Among the present invention, the arbitrary attribute difference in the subclass attribute then belongs to different subclass.User terminal is initiated certain when professional, according to the i.e. subclass of this business association of the terminal attribute at this professional service attribute, this terminal and this user's the subclass that user property or other association attributes corresponded to.
Above-mentioned subclass access channel can have following several kinds of corresponded manners with the corresponding of subclass:
1) each subclass access channel is corresponded to a sub-categories, this type of subclass access channel is called proprietary subclass access channel.
2) parton classification access channel is wherein corresponded to a plurality of subclass, this type of subclass access channel is called shared Sub classification access channel; Other subclass access channel each corresponding to a sub-categories, promptly as proprietary subclass access channel.
For example, can perhaps there be the subclass corresponding with one of them shared Sub classification access channel corresponding to all subclass with special-purpose subclass access channel corresponding to all.Like this can be so that the related business of all subclass all has the chance of access.
3) each subclass access channel is corresponded to the multiclass business.
For the division of subclass, first kind of application be, only divides subclass according to service attribute, and service attribute for example is the QoS grade or inserts response speed requirement etc.; Second kind of application is; Only divide according to terminal attribute; For example be according to the communication system classification, user terminal be divided into enhanced user and non-enhanced user terminal, perhaps according to function and performance classification; The user terminal that strengthens can have more advanced function and performance, so just can allow the different multiple user terminal of user property to attempt inserting; The third application is, only divides according to user property, and user property for example is system manager, domestic consumer etc.; The 4th kind of application divided according to service attribute and terminal attribute; The 5th kind of application divided according to user property and service attribute; The 6th kind of application divided according to terminal attribute and user property; The 7th kind of application divided according to terminal attribute and user property and service attribute.Or the like, also can divide according to other combination, perhaps divide according to other attribute.
Further, can confirm the access priority grade of each sub-categories, can have higher priority like the subclass that qos requirement is high in the subclass attribute according to the subclass attribute; The subclass that perhaps the access response speed will be sought quickness in the subclass attribute has higher priority; Perhaps the subclass attribute comprises that the subclass at enhanced user terminal can have higher priority; Perhaps the subclass attribute comprises that higher level user's subclass can have higher priority; Perhaps, perhaps also can divide according to alternate manner with combination of upper type or the like.
Step S106 is respectively each subclass access channel and distributes the medium resource;
The base station can be given all or only insert subclass channel allocation medium resource to part, the method for salary distribution be below a kind of in several kinds:
1) distribute the medium resource only for the proprietary subclass access channel of part;
2) distribute the medium resource only for part shared Sub classification access channel;
3) distribute the medium resource for proprietary subclass access channel of part and part shared Sub classification access channel;
4) distribute the medium resource for the proprietary subclass access channel of part and whole shared Sub classification access channel;
5) distribute the medium resource for whole proprietary subclass access channels and part shared Sub classification access channel;
6) distribute the medium resource for whole proprietary subclass access channels and shared Sub classification access channel.
Medium resource between the different subclass access channels is differentiable or quadrature, and the medium resource size between the different subclass access channels is not necessarily identical, and different subclass access channels has the medium resource that can distinguish each other.And the medium resource size can be 0, when the size of medium resource is 0, representes that there is not current available medium resource in this subclass access channel.The medium resource comprises or its combination in any in frequency resource, time interval resource, the sign indicating number resource.
In the present invention, the corresponding relation of the quantity of above-mentioned subclass access channel (optional), subclass access channel and subclass and the information such as medium resource of distributing for the subclass access channel can immobilize.Can guarantee the information synchronization of base station and user terminal through dual mode: preserve the above-mentioned information of making an appointment respectively by base station and user terminal, perhaps above-mentioned information is notified to user terminal, as giving user terminal through the RACH information broadcast by the base station.
Division through the subclass access channel with correspond to different subclass; Just can avoid related with the low priority subclass professional and when inserting at random, compete the medium resource each other, the access success rate of the business that the subclass that raising and priority are high is related with the related business of high priority subclass.
In the present invention; Especially; The base station can be according to the situation that takies of the medium resource of for example subclass access channel or combination in any information of current business intensity distributions or current network load distribution or three etc.; In conjunction with setting strategy, adaptively following one or more parameters are adjusted: the corresponding relation of the quantity of subclass access channel, subclass access channel and subclass and be the size of the medium resource of subclass access channel distribution.After carrying out above-mentioned adjustment, the base station will be with the updated information informing user terminal, as broadcasts adjusted RACH information, and user terminal upgrades after receiving synchronously.The high business of said tactful considered priority can preferentially insert, and inserts principles such as more user terminal as far as possible and formulates.
Above-mentioned self adaptation adjustment can improve the access performance of system:
For example; When there is the medium resource in a certain subclass access channel and to transmit the channel resource of the related business of corresponding subclass saturated; Can reduce this subclass access channel and have medium resource (can reduce to 0) this moment; Give other subclass access channel or traffic transmission channel with the medium resource allocation that has more, thereby can avoid invalid application, waste medium resource.
And for example; If the higher corresponding subclass access channel of subclass of priority is in congestion state; Then can reduce the medium resource of the corresponding subclass access channel of the lower subclass of priority; And with on the subclass access channel of the medium resource allocation that has more to the higher subclass correspondence of priority, thereby guarantee that the business related with important subclass can insert.
And for example; The subclass access channel corresponding when a certain subclass is in congestion state; And other subclass access channel can reduce the medium resource of idle subclass access channel and give congested subclass access channel with the medium resource allocation that has more when relatively idle.Perhaps,, also can change the corresponding relation of subclass access channel and subclass, make resource be fully used if the resource that the more and congested subclass access channel of the medium resource that idle subclass access channel distributes distributes is less.
And for example, when all kinds of professional trial access intensity are low, can reduce quantity or medium resource size or the channel quantity and the medium resource size of subclass access channel, increase all the other shared Sub classification access channel medium resources.A kind of special situation is a shared Sub classification access channel only to be set or to delete other subclass access channels; A shared Sub classification access channel only is set; And give this shared Sub classification access channel with the medium resource allocation of all RACH channels; This shared Sub classification access channel allows all categories business to attempt inserting above that; When one or more professional trial access intensity are higher in the shared Sub classification access channel; It is corresponding with these one or more business that new one or more proprietary subclass access channel is set, and give this new one or more proprietary subclass access channel with the part or all of medium resource allocation in the said shared Sub classification access channel.
Step S108, user terminal obtain the pairing subclass access channel of subclass of business association to be accessed and are the medium resource information of its distribution, judge whether to allow this professional trial to be accessed to insert, as allow to reattempt access.
The mode of obtaining can be to be provided with in advance according to a preconcerted arrangement as stated, also can be from the notification message of base station, to obtain.The base station can be designated as the medium resource that each subclass access channel distributes in the RACH information of broadcasting, user terminal can judge whether to find corresponding subclass access channel and this subclass access channel whether the medium resource is arranged according to the classification of business to be accessed.Perhaps; The subclass that allows to attempt access also can be indicated in the base station in the RACH information of broadcasting; Mean promptly that also these professional corresponding subclass access channels have the medium resource, the medium resource of distributing for these subclass access channels this moment is normally appointed.
Through said method of the present invention, when heavy traffic, just can suppress the access application of low priority traffice; The preferential access that guarantees high-priority service needn't be sent the notification message of refusing to send through the base station again and reach this purpose, under the prerequisite that the higher priority service access can guarantee; And the more rudimentary service access of part is when busy; Also can suitably increase the collision of corresponding subclass access channel minimizing service access, when business is not busy, can increase shared Sub classification access channel; Accelerate service access speed, therefore can avoid waste of radio resources, network capacity to reduce and the access efficiency variation.
The present invention also provides a kind of random access system, comprises user terminal and access device (like the base station).Wherein, access device comprises: division unit, self adaptation adjustment unit, information synchronizing unit, resource allocation unit.
Said division unit is used for access channel is divided into a plurality of subclass access channels, and said subclass access channel and subclass is carried out corresponding, also can further confirm the priority level of each sub-categories.Corresponding method has been described here at preceding text and has no longer been repeated.
Said resource allocation unit is used to be respectively each subclass access channel and distributes the medium resource; The method of salary distribution has six kinds, and identical with preceding text method part repeated no more.
The self adaptation adjustment unit is optional; Be used for adaptively following one or more parameters being adjusted: the corresponding relation of the quantity of subclass access channel, subclass access channel and subclass and be the size of the medium resource of subclass access channel distribution according to the for example situation that takies of the medium resource of subclass access channel or current business intensity distributions or current network load distribution or three's combination in any information etc.
Information synchronizing unit is optional, is used for the corresponding relation of number (optional), subclass access channel and the subclass of the subclass access channel that upgrades and is the information informing user terminals such as medium resource of subclass access channel distribution.
User terminal is used for according to the subclass access channel of the subclass correspondence of business association to be accessed and is the medium resource information of its distribution, allows this professional trial to be accessed to insert as judging, then attempts inserting.
Describe the detailed process flow process of method of the present invention when specifically realizing in detail with a plurality of application examples below.
First application example
According to method of the present invention, RACH is divided into 10 RACH, classifying and numbering CH1 to CH10.Specify the subclass access channel to allow to attempt the subclass of access, divide by service attribute and terminal attribute here.As proprietary subclass access channel, for proprietary subclass access channel, the subclass priority that CH1 is corresponding is the highest with CH1 to CH8, and priority level is successively decreased successively, and the CH8 priority level is minimum; As shared Sub classification access channel, for shared Sub classification access channel, CH9 corresponding service classification priority is the highest with CH9 to CH10, and priority level is successively decreased successively, and the CH10 priority level is minimum.On RACH, having 8 types of business can attempt inserting; Be respectively S1 to S8; For the UE that strengthens, its S1 to S8 is allowed to attempt inserting successively on CH1 to CH8, and the S1 to S8 on the UE that CH9 allows to strengthen attempts inserting; CH10 allows the S1 to S8 of the UE of non-enhancing, and the S1 to S8 of the UE that partly or entirely strengthens attempts inserting according to the access rules of non-enhanced system.Among all UE, the UE of enhancement mode knows the corresponding relation of above-mentioned subclass channel and subclass, and the S1 to S8 on the non-enhancement mode UE can only insert on CH10 subclass channel.
Be respectively each said subclass access channel and distribute the medium resource.Subclass RACH with effective medium resource is called effective subclass RACH.
The idiographic flow that the user inserts is following:
Step S201; UE (user terminal) keeps or refreshes RACH (RACH) information; RACH information comprises current effective subclass RACH information; Like current effective access channel classification number is CH1, CH2, CH5 and CH9, and S1, S2, S5 that CH1, CH2, CH5 allow to strengthen UE respectively attempt inserting above that, and CH9 allows the S3, S4, S6, S7, S8 or the S1～S8 that strengthen UE to attempt inserting above that.
As preferred version, UE can obtain the RACH information of base station (BS) broadcasting from the downlink broadcast channel; If certain UE does not have RACH information, then this UE will monitor and obtain RACH information from BS, if UE has had RACH information and obtain new RACH information at current time then use the original RACH information of new RACH information substitution, otherwise keep original RACH information.According to obtain or original RACH information; UE can know there is which subclass access channel in the present network; And which type various-service corresponding with these subclass access channels can apply for inserting, and current which subclass access channel has effective medium resource and supplies corresponding business to carry out this to take turns and attempt inserting;
Alternatively, RACH information is the BS broadcast message, and this broadcasting can be periodic; RACH information comprises the division of subclass RACH; The corresponding relation of subclass RACH and subclass, the time-frequency resource allocating of each subclass RACH, the signed codevector set that each subclass RACH can use; And parameter such as leading scrambler; The medium resource of each subclass RACH refers to combination or one of them of this each subclass RACH running time-frequency resource and signed codevector, if each subclass RACH can with the signed codevector set be that the base station is scheduled in advance with user terminal and is known that then this signed codevector aggregate information can be not included in the periodic broadcast information;
If to be base station and user terminal predetermined in advance and know for the corresponding relation of subclass RACH and subclass; Or base station and certain customers terminal are predetermined in advance and know; And the service accessibility of all the other user terminals is limited in specific subclass RACH, and then the correspondence relationship information of this subclass RACH and subclass can be not included in the periodic broadcast information.
Step S202, UE judge whether to exist and professional corresponding subclass access channel to be accessed, particularly; If UE exists and the corresponding business to be accessed of subclass access channel; For example, the business to be accessed of UE is respectively S1, S3 and S5, if the indication existence of RACH information and S1 and corresponding CH1 of S5 and CH5 subclass access channel; Then CH1 and CH5 subclass access channel can supply S1 and the S5 of UE to insert, and S3 can not insert or can not be in current access; If the indication existence of RACH information and S1 and corresponding CH1 of S5 and CH5 subclass access channel, and CH9, then CH1 and CH5 subclass access channel can supply the S1 of UE and S5 to insert, and CH9 can supply the S3 of UE to insert execution in step S203 simultaneously; If do not exist, execution in step S201 then;
Step S203, UE judge whether to exist effective subclass access channel, specifically; If have effective medium resource with the corresponding subclass access channel of UE business to be accessed, then this subclass RACH is called as effective subclass RACH, and corresponding business to be accessed can attempt inserting at this effective subclass RACH; If exist and UE professional S1 to be accessed and corresponding CH1 of S5 and CH5 subclass access channel; Wherein CH1, CH9 have the medium resource, and do not have medium resource or inadequate resource among the CH5, and then UE professional S1 to be accessed can attempt inserting on CH1; S3, S5 then can attempt inserting execution in step S204 on CH9; If do not have effective subclass access channel, then execution in step S201;
Step S204; UE selects to insert time randomly for the business that can attempt inserting on corresponding effective subclass RACH; Particularly, the business that can attempt inserting among the UE has a plurality of, and these business can be same line of business; Also can be that inhomogeneity is professional; For the trial access service that belongs to different effective proprietary subclass RACH, UE can select time for it respectively randomly on corresponding subclass RACH, for the one or more trial access service that belong to identical effective proprietary subclass RACH; UE can only select time for one of them business randomly, or is that a plurality of business are selected time randomly according to the medium resource size of this effective subclass RACH; For belonging to the different effectively trial access service of shared Sub classification RACH; UE can share on the RACH at corresponding subclass respectively and select time randomly for it; For one type or multiclass trial access service belonging to identical effective subclass RACH of sharing; UE can be only selects time for business in this type or the multiclass business randomly, or is that a plurality of business are selected time randomly according to the medium resource size of this effective subclass RACH;
Step S205; UE selects signed codevector and structure lead code randomly, and sends at selected medium Resource Block, and access information can be this lead code; Also can represent by this lead code and the combination of the time slot that sends this lead code; That is to say that UE selects signed codevector and structure lead code randomly from the signed codevector set that corresponding effective subclass RACH can use, and is that the business that in step S204, has obtained time is sent this lead code on the time that it obtained; Should use in the instance; The combination of signed codevector or signed codevector and the residing time slot of medium Resource Block is constituted access information as the characteristic of medium Resource Block, and epicycle is attempted the access end after all attempt access service to have sent lead code, gets back to step S201.
Second application example
The flow process of this application example accidental access method specifically can may further comprise the steps:
Step S301, UE (user terminal) keep or refresh RACH (RACH) information, and preferably, UE can obtain the RACH information of base station (BS) broadcasting from the downlink broadcast channel; If certain UE does not have RACH information; Then this UE will monitor and obtain RACH information from BS; If UE has had RACH information and obtain new RACH information at current time then use the original RACH information of new RACH information substitution; Otherwise keep old RACH information, according to the RACH information that is obtained, UE can know there is which subclass access channel in the present network; And which the classification user corresponding with these subclass access channels can apply for inserting, and current which subclass access channel has effective medium resource and supplies the respective classes user terminal to attempt inserting;
Alternatively, RACH information is the BS broadcast message, and this broadcasting can be periodic; RACH information comprises the division of subclass RACH, the corresponding relation of subclass RACH and subclass, the time-frequency resource allocating of each subclass RACH; The signed codevector set that each subclass RACH can use; And parameter such as leading scrambler, the medium resource of each subclass RACH refers to the combination of this each subclass RACH running time-frequency resource and signed codevector, if each subclass RACH can with the signed codevector set be that the base station is scheduled in advance with user terminal and is known; Then this signed codevector aggregate information can be not included in the periodic broadcast information
If to be base station and user terminal predetermined in advance and know for the corresponding relation of subclass RACH and subclass; Or base station and certain customers terminal are predetermined in advance and know; And the access capability of all the other user terminals is limited in specific subclass RACH, and then the correspondence relationship information of this subclass RACH and subclass can be not included in the periodic broadcast information.
Preferably, can be in above-mentioned steps S102, UE is divided into two types of the UE (noE-UE) of UE (E-UE) and the non-enhancement mode of enhancement mode; E-UE is different with the communication system that noE-UE adopts; RACH is divided into 10 RACH, classifying and numbering CH1_S1 to CH1_S9, and CH2 by terminal attribute and service attribute; CH1_S1～CH1_S8 supplies professional trial of a type of enhancement mode UE to insert respectively; Be proprietary subclass access channel, all or part of professional trial that CH1_S9 supplies enhancement mode UE to initiate inserted, and the set of the RACH of classifying and numbering CH1_S1 to CH1_S9 can also be called as CH1; Whole business that CH2 supplies non-enhancement mode UE to initiate, and all or part of professional trial that enhancement mode UE initiates inserted.
Step S302, UE judge whether to exist the subclass access channel corresponding with its user property, particularly; If RACH information indication exists CH1 and CH2, perhaps CH2, then no matter this UE is E-UE or noE-UE; All there is corresponding subclass access channel, execution in step S303; If there is CH1 in the indication of RACH information, then belong to E-UE, then execution in step S303 as if this UE; Otherwise, execution in step S301;
Step S303; UE judges whether to exist effective subclass access channel; Specifically, if having effective medium resource with sub-access category channel of the corresponding proprietary attribute of UE business to be accessed or shared attribute access subclass channel, then this subclass RACH is called as effective subclass RACH; Corresponding business to be accessed can attempt inserting at this effective subclass RACH
For example; If this UE is E-UE; And this E-UE business to be accessed is S1, S3 and S5; If there is the medium resource in RACH information indication simultaneously with S1 and corresponding CH1_S1 of S5 and CH1_S5 subclass access channel, then CH1_S1 and CH1_S5 subclass access channel can supply S1 and the S5 trial access of this E-UE respectively, and the S3 of this E-UE can not insert or can not be in current access;
If this UE is E-UE; And this E-UE business to be accessed is S1, S3 and S5; There are the medium resource in CH1_S1, CH1_S5 and CH1_S9 that RACH information indication simultaneously is corresponding with S1, S3 and S5 or CH2 or CH1_S9 and CH2; Then CH1_S1 and CH1_S5 subclass access channel can supply the S1 of this E-UE and S5 to attempt inserting respectively, and CH1_S9 or CH2 or CH1_S9 and CH2 can supply the S3 of this E-UE to attempt inserting simultaneously.
Execution in step S304 then, otherwise execution in step S301;
Step S304; UE selects to insert time randomly for the business that can attempt inserting on corresponding effective subclass RACH; Particularly, the business that can attempt inserting among the UE has a plurality of, and these business can be same line of business; Also can be that inhomogeneity is professional; For the trial access service that belongs to different effective proprietary subclass RACH, UE can select time for it respectively randomly on corresponding subclass RACH, for the one or more trial access service that belong to identical effective subclass RACH; UE can only select time for one of them business randomly, or is that a plurality of business are selected time randomly according to the medium resource size of this effective subclass RACH; For belonging to the different effectively trial access service of shared Sub classification RACH; UE can share on the RACH at corresponding subclass respectively and select time randomly for it; For one or multiclass trial access service belonging to identical effective subclass RACH; UE can only select time for one of them business randomly, or is that a plurality of business are selected time randomly according to the medium resource size of this effective subclass RACH;
Step S305; UE selects signed codevector and structure lead code randomly; And in selected medium Resource Block transmission; The UE that strengthens and the UE of non-enhancing can dispose unified signed codevector set also can dispose different signed codevector set, and access information can be this lead code, also can be represented by this lead code and the combination of the time slot that sends this lead code; That is to say; Select signed codevector and structure lead code the signed codevector set that UE can use from corresponding effective subclass RACH randomly, and on the time that it obtained, sends this lead code for the business that in step S304, has obtained time, with the combination of signed codevector or signed codevector and the residing time slot of medium Resource Block characteristic formation access information as the medium Resource Block; Epicycle is attempted inserting and is finished after all attempt access service to have sent lead code, handles and gets back to step S301.
Certainly; The present invention also can have other various embodiments; Under the situation that does not deviate from spirit of the present invention and essence thereof; Those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (7)
1. the distribution method of a random access channel resource may further comprise the steps:
(a) access channel is divided into a plurality of subclass access channels;
(b) said subclass access channel and subclass are carried out corresponding, subclass below is called the subclass attribute and divides according to one or more attributes, only allows professionally on the corresponding subclass access channel of its related subclass, to attempt inserting; Said subclass attribute is to divide according to a kind of or combination in any in service attribute, terminal attribute and the user property; Certain user terminal is initiated certain when professional, according to the i.e. subclass of this business association of the subclass that user property corresponded to of the terminal attribute at this professional service attribute, this terminal and relative users;
Wherein, said subclass access channel and subclass are carried out at once:
Each subclass access channel is corresponded to a sub-categories, as proprietary subclass access channel;
Perhaps, wherein parton classification access channel is corresponded to a plurality of subclass, as shared Sub classification access channel, other subclass access channel each corresponding to a sub-categories, as proprietary subclass access channel;
(c) be respectively each subclass access channel and distribute the medium resource.
2. the method for claim 1 is characterized in that:
In the step (b); Said subclass access channel and subclass are being carried out at once; Be that parton classification access channel is wherein corresponded to a plurality of subclass; As shared Sub classification access channel, other subclass access channel each corresponding to a sub-categories, as proprietary subclass access channel; And, have a shared Sub classification access channel at least corresponding to all subclass or have at least a shared Sub classification access channel not have the subclass corresponding with special-purpose subclass access channel corresponding to all; Said subclass attribute is to divide according to a kind of or combination in any in service attribute, terminal attribute and the user property.
3. the method for claim 1 is characterized in that:
In the step (b), said subclass is to divide according to the combination of service attribute and terminal attribute;
Said access channel comprises a plurality of proprietary subclass access channels; The subclass that these proprietary subclass access channels are corresponding has first kind of terminal attribute and different service attribute; And said access channel also comprises at least one shared Sub classification access channel; This shared Sub classification access channel is corresponding to all subclass with second kind of terminal attribute, perhaps corresponding to all subclass;
Perhaps; Said access channel comprises a plurality of proprietary subclass access channels; The subclass that these proprietary subclass access channels are corresponding has first kind of terminal attribute and different service attribute; And said access channel also comprises at least two shared Sub classification access channels, and one of them shared Sub classification access channel is corresponding to all subclass with second kind of terminal attribute or all subclass, and another shared Sub classification access channel is corresponding to all subclass with first kind of terminal attribute.
4. the method for claim 1 is characterized in that:
Said subclass attribute comprises service attribute, and this service attribute is the QoS grade, perhaps inserts the response speed requirement, perhaps QoS grade and the combination that inserts the response speed requirement.
5. the method for claim 1 is characterized in that:
Step (b) is also further confirmed the priority level of each sub-categories; It is being after each subclass access channel distributes medium resource, also adaptively following one or more parameters to be adjusted in the step (c): the corresponding relation of the quantity of subclass access channel, subclass access channel and subclass and be the size of the medium resource of subclass access channel distribution.
6. method as claimed in claim 5 is characterized in that:
The base station is according to the situation that takies of the medium resource of subclass access channel or current business intensity distributions or current network load distribution or three's combination in any information in the step (c); In conjunction with setting strategy, adaptively said one or more parameters are adjusted.
7. method as claimed in claim 5 is characterized in that:
The self adaptation adjustment of carrying out in the step (c) comprises a kind of or combination in any in the following mode:
1) there is the medium resource and to transmit the channel resource of corresponding type of various-service saturated when a certain subclass access channel; Reduce this subclass access channel and have the medium resource this moment, gives other subclass access channel or traffic transmission channel with the medium resource allocation that has more;
2) if the corresponding subclass access channel of higher priority business classification is in congestion state; Then reduce the medium resource of the corresponding subclass access channel of the lower class of service of priority, and the medium resource allocation that has more is given on the corresponding subclass access channel of higher priority business classification;
3) the subclass access channel when a certain class of service correspondence is in congestion state; And other subclass access channel then reduces the medium resource of idle subclass access channel and gives congested subclass access channel with the medium resource allocation that has more when relatively idle;
4) if the resource that the more and congested subclass access channel of the medium resource that idle subclass access channel distributes distributes is less, then change the corresponding relation of subclass access channel and class of service;
5) when all kinds of professional trial access intensity are low; Can reduce quantity or medium resource size or the channel quantity and the medium resource size of subclass access channel; Increase shared Sub classification access channel medium resource; A kind of special situation is a shared Sub classification access channel only to be set or to delete other subclass access channels; A shared Sub classification access channel only is set; And give this shared Sub classification access channel with the medium resource allocation of all RACH channels, this shared Sub classification access channel allows all categories business to attempt inserting above that, professionally attempts inserting intensity when higher when one or more in the shared Sub classification access channel; It is corresponding with these one or more business that new one or more proprietary subclass access channel is set, and give this new one or more proprietary subclass access channel with the part or all of medium resource allocation in the said shared Sub classification access channel.
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| CN 200710096244 CN101282576B (en) | 2007-04-02 | 2007-04-02 | Method for distributing random access channel resource |
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| CN101730191B (en) * | 2008-10-27 | 2013-06-05 | 华为技术有限公司 | Resource allocation method, terminal and communication system |
| CN103493543B (en) * | 2011-06-16 | 2017-11-28 | 华为技术有限公司 | Method and device for controlling user to access system |
| EP3110223B1 (en) * | 2014-03-20 | 2019-05-08 | Huawei Technologies Co., Ltd. | Data transmission method and station |
| US10820356B2 (en) * | 2015-12-11 | 2020-10-27 | Huawei Technologies Co., Ltd. | Method and system for contention-based channel allocation |
| CN110139059B (en) * | 2019-04-01 | 2021-10-08 | 视联动力信息技术股份有限公司 | Method and device for allocating video networking resources |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1316867A (en) * | 2000-04-04 | 2001-10-10 | 索尼国际(欧洲)股份有限公司 | Event trigging change of insertion service class in random insertion channel |
| EP0993214B1 (en) * | 1998-10-05 | 2010-12-08 | Sony Deutschland GmbH | Random access channel prioritization scheme |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0993214B1 (en) * | 1998-10-05 | 2010-12-08 | Sony Deutschland GmbH | Random access channel prioritization scheme |
| CN1316867A (en) * | 2000-04-04 | 2001-10-10 | 索尼国际(欧洲)股份有限公司 | Event trigging change of insertion service class in random insertion channel |
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