CN102932952A - Method and device for performing random access - Google Patents
Method and device for performing random access Download PDFInfo
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- CN102932952A CN102932952A CN2011102336333A CN201110233633A CN102932952A CN 102932952 A CN102932952 A CN 102932952A CN 2011102336333 A CN2011102336333 A CN 2011102336333A CN 201110233633 A CN201110233633 A CN 201110233633A CN 102932952 A CN102932952 A CN 102932952A
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Abstract
The invention provides a method and a device for performing random access in a user terminal of a wireless communication network based on carrier aggregation transmission. In the method, a carrier comprises a master cell and at least one slave cell, wherein the method comprises the following steps: the user equipment acquires random access trigger requests while a random access procedure is performed; or the user equipment simultaneously acquires a plurality of random access trigger requests and selects one of cells, performing random access and/or random access trigger requests, to perform the random access procedure according to predetermined rules when the cells performing the random access and/or random access trigger requests contain at least one slave cell.
Description
Technical field
The present invention is based on the radio communication of carrier aggregation technology, relate in particular to the method and apparatus that user terminal accesses at random, and be used to indicate the method and apparatus that user terminal accesses at random in the base station.
Background technology
In the version 8-10 of existing 3GPP (Rel8-10), think that interface only carries out a physical accidental access procedure (Physical Random Access Channel, PRACH) aloft.Although in Rel10, introduced carrier aggregation (Carrier Aggregation, CA) and the concept of (Secondary Cell, Scell) from the residential quarter.For example, the carrier component that user terminal successfully accesses first can be called main plot (Primary Cell, Pcell), other carrier components for subsequent use are called (the Secondary Cell from the residential quarter, Scell), certainly, user terminal also can correspondingly change according to the triggering of base station to the main plot with from the selection of residential quarter.For Scell, angle from user terminal, it is allocating random access channel (Random Access Channel not, random access) configuration because do not need Scell is carried out timing advance, is also referred to as regularly alignment (Time Advancement or Time Alignment, TA), since do not carry out up time unifying, therefore up asynchronous, thus can't access at random at Scell.Therefore, Rel10 is identical with Rel8 and Rel9, also is that user terminal only can access at random at Pcell.And in Rel11, except accessing at random at Pcell, because need to shift to an earlier date at the enterprising line time of Scell/alignment, therefore, also might access at random at Scell.
At traditional Rel8, among Rel9 and the R10, in some scenes, PDCCH order signaling is sent by network, initiates the physical accidental access to trigger user terminal, and simultaneously, user terminal is carrying out random access procedure, for example lose synchronously corresponding to user terminal up, and upstream data is when arriving the scene that user terminal can own triggering random access procedure.If such scene has occured, owing to only relating to Pcell, therefore determine how to process by the specific implementation of user terminal.Yet, in Rel11, because user terminal also can access on Scell at random, if having simultaneously random access trigger request on the Pcell and the random access trigger request on Scell, prior art can not solve the situation that occurs among this Rel11.
Summary of the invention
According to a first aspect of the invention, a kind of method of accessing at random of being used in the user terminal based on the cordless communication network of carrier aggregation transmission is provided, wherein, this carrier wave comprises the main plot and at least one is from the residential quarter, the method may further comprise the steps: obtain random access trigger request when this user terminal carries out random access procedure, perhaps this user terminal obtains a plurality of random access trigger request simultaneously, and when in the residential quarter of carrying out random access procedure and random access trigger request, comprising at least one from the residential quarter, according to pre-defined rule, be chosen on the residential quarter in this residential quarter of accessing at random and/or accessing at random trigger request and carry out random access procedure.
According to a second aspect of the invention, provide a kind of and in the base station based on the cordless communication network of carrier aggregation transmission, be used for the method that assist user terminal accesses at random, wherein, this carrier wave comprises main plot and at least one from the residential quarter, and the method may further comprise the steps: judge the ongoing random access of this user terminal whether based on non-competing or by base station triggers based on competition; If the ongoing random access of this user terminal be based on non-competing or by base station triggers based on competition, judge then whether this user terminal accesses at random in the main plot, if-this user terminal just accesses at random in the main plot, then postpone sending random access request to this user terminal; If-this user terminal accesses at random from the residential quarter, if then still need to be sent in random access trigger request on the main plot to this user terminal, be sent in random access trigger request on this main plot to this user terminal.
According to a third aspect of the invention we, a kind of first device of accessing at random of being used in the user terminal based on the cordless communication network of carrier aggregation transmission is provided, wherein, this carrier wave comprises the main plot and at least one is from the residential quarter, this device comprises: access device, be used for when this user terminal carries out random access procedure, obtaining random access trigger request, perhaps this user terminal obtains a plurality of random access trigger request simultaneously, and when in the residential quarter of carrying out random access procedure and random access trigger request, comprising at least one from the residential quarter, according to pre-defined rule, be chosen on the residential quarter in this residential quarter of accessing at random and/or accessing at random trigger request and carry out random access procedure.
According to a forth aspect of the invention, provide a kind of and in the base station based on the cordless communication network of carrier aggregation transmission, be used for the second device that assist user terminal accesses at random, wherein, this carrier wave comprises main plot and at least one from the residential quarter, and this device is used for: judge the ongoing random access of this user terminal whether based on non-competing or by base station triggers based on competition; If the ongoing random access of this user terminal be based on non-competing or by base station triggers based on competition, judge then whether this user terminal accesses at random in the main plot, if-this user terminal just accesses at random in the main plot, then postpone sending random access request to this user terminal; If-this user terminal accesses at random from the residential quarter, if then still need to be sent in random access trigger request on the main plot to this user terminal, be sent in random access trigger request on this main plot to this user terminal.
Adopt the solution of the present invention, preferably, can shorten access delay, and save the downlink signaling expense.
Description of drawings
Read following detailed description to non-limiting example by the reference accompanying drawing, further feature of the present invention, according to the device block diagram of a specific embodiment of the present invention.
Fig. 1 shows the method flow diagram according to the operation of the user terminal of a specific embodiment of the present invention;
Fig. 2 shows the method flow diagram according to the operation of the base station of a specific embodiment of the present invention.
Wherein, same or analogous Reference numeral represents same or analogous steps characteristic or device/module.It is more obvious that purpose and advantage will become.
Embodiment
According to present state, agreed by network-triggered on Scell based on non-competing random access, this method is applicable to realize at least the up time unifying for the Scell of new configuration.Because for the Scell of new configuration, only have the base station to know and when dispatch this Scell of use.In Rel10, when time early timing device (Time Advancement Timer, TAT) to after date, user terminal will automatically trigger random access procedure at Pcell.In Rel11, no matter adopt be for the TAT of user terminal or, the TAT for timing advance (TA) group might produce Scell and lose uplink synchronous.What is called refers to Scell and/or Pcell in one group for TA group TAT, has identical timing advance information.For example, for the situation for user terminal TAT, when TAT expires, user terminal will think that all Scell groups lose uplink synchronous.And for the situation for the TAT of TA group, when TAT to after date, user terminal thinks that also the TA group corresponding with this TAT loses uplink synchronous.
In addition, when TAT expires, user terminal is known the Scell that uses an activation (active), otherwise, in advance deexcitation of base station or discharge these Scell.Therefore, when the Scell group expires TAT to after date, user terminal automatically triggers the random access procedure on the Scell that activates and do not need the base station to trigger is rational, this mode has shortened access delay, and saved the downlink signaling expense, because user terminal does not need to wait for the further indication of base station, just can trigger voluntarily random access procedure.This mode also with R10 in user terminal behavior also namely when TAT to after date, user terminal triggers random access automatically, is consistent.
In Rel11, when a plurality of TA group need to carry out uplink synchronous at the same time, may produce the situation of parallel random access.This situation may occur in following scene: user terminal recovers losing synchronously from up, perhaps after switching or after the uplink service increase.Lose synchronous scene for up, unlikelyly after the user terminal uplink synchronous, need immediately large data transfer rate.Similarly, for the increase of uplink service, for the increase of data transfer rate normally gradually, unlikelyly within very short time, need a large amount of Scell resources.For switching, in order to keep high data transfer rate, may need extra Scell resource.Yet, from the angle of disposing, in the process of switching, the unlikely employing High Data Rate of user terminal.Also because of above same reason, with after being intended to switching, Scell is in unactivated state.Because above-mentioned, because in the situation of the random access of above-mentioned needs, the unlikely horse back of user terminal needs higher data transfer rate, therefore, do not need to support to carry out simultaneously a plurality of random accesses, unless produced new scene.Another major reason of avoiding carrying out simultaneously a plurality of random accesses is to reduce testing requirement in Rel11, and user terminal does not need the scene of tested parallel random access.
But as mentioned above, if adopt the random access of user terminal triggering on Scell in Rel11, for following scene these parallel random access situations will occur, be divided into for the TAT of user terminal or two kinds of situations of TAT of organizing for TA:
● for the situation for the TAT of user terminal:
When TAT to after date, user terminal need to all carry out the random access based on competition in Pcell and Scell group;
● for the situation for the TAT of TA group:
The TAT of two TA groups expires simultaneously
The TAT of a TA group expires, and still has ongoing random access procedure on another TA group
● when user terminal just carries out based on the random access of competing at Scell, the base station wishes to trigger based on non-competing random access at same Scell, because in based on non-competing random access, user terminal adopts the special random access preamble code, do not need and other user terminal competitions, therefore increase accesses at random successful probability and shortens uplink synchronous and postpones.
In sum, random access collision among the Rel11, also namely parallel random access may be created in following several scene:
■ subfield scape 1.1: at Scell ongoing random access is arranged, the random access of trigger request on Pcell;
■ subfield scape 1.2: at Pcell ongoing random access is arranged, the random access of trigger request on Scell;
■ subfield scape 1.3: do not have ongoing random access, simultaneously the random access of trigger request on Pcell and Scell.
■ subfield scape 2.1: at Scell ongoing random access is arranged, the random access of trigger request on another Scell
■ subfield scape 2.2: need to trigger random access procedure in a plurality of Scell requests simultaneously.
For above-mentioned these scenes, the behavior needs of user terminal is stipulated in standard.The behavior of user terminal can adopt in following three kinds of modes any to carry out:
Option one: user terminal continues ongoing random access, and postpones follow-up random access trigger request
For option one, it all is suitable for for most scene.Yet, if the random access procedure of user terminal trigger request be for Pcell's and be delayed, this will be undesirable.For option 2 and option 3, this will depend on the importance of the random access procedure of ongoing or trigger request.Because usually, the reliability of the connection on Pcell is the highest, therefore, usually gives random access procedure on Pcell with limit priority.Based on above-mentioned principle, for the behavior of optimizing user terminal, for different scenes, need to adopt different options.
User terminal at first judges in the random access of ongoing random access or trigger request whether comprise Pcell, comprise a Pcell and at least one Scell in the random access of ongoing random access or trigger request if user terminal is at first judged, be divided into following several scene 1.1-1.3 and discuss.
When the random access of request triggering on Pcell, and at Scell ongoing random access is arranged, then adopt option 2, also, stop at the ongoing random access on the Scell, and the random access of beginning on Pcell.When user terminal by air interface after Pcell accesses at random, the base station will learn that the random access on Scell stops.
When ongoing random access is arranged at Pcell, can employing or option one or option 3 operate, continue the random access on current Pcell, and postpone or abandon the follow-up random access trigger request on Scell.Then, user terminal judges that the corresponding Scell of random access trigger request that is postponed is based on also being based on of competition non-competing after having finished ongoing random access procedure.
● if the follow-up random access trigger request on Scell is by Physical Downlink Control Channel order signaling (Physical Downlink Control Channel by the base station, PDCCH) trigger based on non-competing, then when after random on the Pcell accesses successfully, user terminal is judged whether the going back effectively based on the used dedicated preamble of non-competing random access trigger request on Scell that the base station is distributed for user terminal before, also be, user terminal judges whether the dedicated preamble that comprises in the PDCCH order signaling that sends to user terminal in the base station is still effective, if still effective, then user terminal is with the random access procedure of ground triggering on Scell.
Otherwise if this dedicated preamble lost efficacy, then user terminal can automatically trigger the random access based on competition on Scell, and does not need to wait for the further signaling from the base station, thereby shortens delay.
If ● the follow-up random access trigger request on Scell be triggered by Physical Downlink Control Channel order signaling by the base station or user terminal oneself triggers based on competing, then when after random on the Pcell accesses successfully, user terminal does not need to wait for the further indication from user terminal, but directly trigger based on what compete at the Scell of correspondence, delay time thereby shorten.
For subfield scape 1.3
User terminal adopts option 4, and also, user terminal at first responds the random access trigger request on Pcell, then, triggers the random access trigger request on Scell again, perhaps waits for the new indication of base station.
In another kind of situation, if the user terminal judged result is not comprise Pcell in the random access of ongoing random access or trigger request, but comprise a plurality of Scell, then discuss according to following scene 2 and scene 3:
Also be, corresponding to the conflict from the random access of different Scell, just wherein can comprise conflicting of the random access carried out at Scell and random access trigger request on other Scell, in the time of also can comprising the conflict of the random access trigger request on a plurality of Scell simultaneously, can with based on non-competing random access as limit priority, certainly, also can according to the specific implementation of user terminal, be determined by user terminal.
If the strategy of user terminal is to access at random for Scell, will be based on non-competing random access during as limit priority, then user terminal judges that at first whether the random access of the ongoing or trigger request on Scell is based on non-competing.
● if ongoing random access is based on non-competing, can adopt option one or 3.Also namely, user terminal continues current based on non-competing random access, postpones or abandons subsequently random access trigger request.After current random access procedure finishes, no matter whether success of this random access procedure, user terminal adopts following behavior, with Optimal performance:
If it is non-competing that the follow-up random access trigger request of ■ also is based on, and special-purpose lead code is still effective, and user terminal can correspondingly trigger based on non-competing random access at corresponding Scell.
■ otherwise, user terminal can trigger random access based on competition at corresponding Scell;
■ or, user terminal can not carry out any work, but waits for the further indication of base station.
● if ongoing random access is based on competition, and follow-up random access trigger request is based on non-competingly, and then user terminal can be considered option 2
The ■ user terminal stops the current random access based on competition on Scell, and according on another Scell based on non-competing random access trigger request, beginning on this another Scell based on non-competing random access.Finish this based on non-competing random access procedure after, no matter whether success of this random access procedure, user terminal can or continue to carry out on formerly the Scell the random access based on competition, perhaps waits for the further indication of base station.
● if ongoing random access is based on competition, and follow-up random access trigger request also is based on competition, and then user terminal can consider to adopt option one and option 3.Also namely, continue ongoing random access procedure, and postpone or abandon follow-up random access trigger request.After current random access procedure finishes, user terminal can begin with the corresponding Scell of the trigger request of postponing before or abandon on random access procedure.
● if there is no ongoing random access, and the random access that request triggers is all for Scell, comprising based on the competition and based on non-competing, then user terminal is accessing at random based on non-competing Scell, perhaps determines at first at which Scell access at random according to concrete the carrying out of the realization of user terminal.
Current ongoing random access and random access subsequent triggers all are situations of same Scell, it is the highest or determine according to the specific implementation of user terminal that main principle still is based on non-competing random access priority, this specific implementation depends on the configuration parameter of subscriber terminal equipment production firm etc., determined by each production firm, different manufacturers may carry out different configurations.
● if the current ongoing non-competing random access that is based on, then user terminal can adopt option 3
● if the current ongoing random access that is based on competition, and that the random access of trigger request is based on is non-competing, then user terminal can adopt option 2, with the success rate that improves random access and shorten and postpone
● if a plurality of random access trigger request all are based on competition, and then user terminal can adopt option 3, still carry out current random access, and abandon random access trigger request.
Each above embodiment is described specific embodiments of the invention from the angle of the behavior of user terminal, wherein, each user terminal is by certain operation, avoided simultaneously between Pcell and the Scell, between the different Scell or adopt based on competition and based between the non-competing same Scell, ongoing random access conflicts with random access request, the perhaps conflict between a plurality of random access requests, thus the success rate of random access preferably improved.Below, according to a second aspect of the invention, will the behavior of base station for fear of the example of above-mentioned conflict be described.
Be appreciated that, the random access based on competition by the user terminal of its triggering is only known in the base station, also be that it knows which user terminal at certain the Pcell or the Scell that are used for carrying out based on the random access of competing by its distribution be, again because special-purpose random access lead code can be reserved to specific user terminal in the base station, therefore, the base station knows which user terminal carries out based on non-competing random access at Pcell or Scell is.And the base station can't know that the random access based on competition that is triggered by user terminal is which user terminal is carrying out.Because from the angle of base station, it is only known at this Pcell or Scell has based on the random access of competing, but and does not know which concrete user terminal is carrying out this random access.Therefore, the base station only can be for based on non-competing or carry out scheduling controlling by the random access based on competition of base station triggers.
At first the base station judge the ongoing random access of this user terminal whether based on non-competing or by base station triggers based on competition;
If the ongoing random access of this user terminal be based on non-competing or by base station triggers based on competition, judge then whether this user terminal accesses at random in the main plot,
● if this user terminal just accesses at random in the main plot, then postpones sending random access request to this user terminal;
● if this user terminal accesses at random from the residential quarter, the random access trigger request that then judge to need sends be the main plot or from the residential quarter:
If it is non-competing that this user terminal of ■ is based in ongoing random access from the residential quarter, postpone being sent in random access trigger request from the residential quarter to user terminal;
If the ■ user terminal is based on competition in ongoing random access from the residential quarter, then continue to judge that the random access request that needs triggering is based on also being based on of competition non-competing:
√ when need to be sent in to this user terminal from the residential quarter based on non-competing random access request the time, to this user terminal be sent in this from the residential quarter based on non-competing random access trigger request;
√ when need to be sent in to this user terminal from the residential quarter based on the random access request of competition the time, postpone being sent in this random access trigger request based on competition from the residential quarter to this user terminal.
Abovely from the method angle the present invention is described in detail, below, will be described by the present invention from design factors, because apparatus and method are corresponding modes, therefore, only describe briefly for device.
Be arranged in the cordless communication network that transmits based on carrier aggregation according to user terminal, this carrier wave comprises the main plot and at least one is from the residential quarter, this first device comprises: access device, be used for when this user terminal carries out random access procedure, obtaining random access trigger request, perhaps this user terminal obtains a plurality of random access trigger request simultaneously, and when in the residential quarter of carrying out random access procedure and random access trigger request, comprising at least one from the residential quarter, according to pre-defined rule, be chosen on the residential quarter in this residential quarter of accessing at random and/or accessing at random trigger request and carry out random access procedure.
Above embodiments of the invention are described, but the present invention is not limited to specific system, equipment and concrete agreement, those skilled in that art can make various distortion or modification within the scope of the appended claims.
The those skilled in the art of those the art can be by research specification, disclosed content and accompanying drawing and appending claims, and understanding and enforcement are to other changes of the execution mode of disclosure.In the claims, word " comprises " element and the step of not getting rid of other, and wording " one " is not got rid of plural number.In the present invention, " first ", " second " only represent title, do not represent orbution.In the practical application of invention, the function of a plurality of technical characterictics of quoting during a part possibility enforcement of rights requires.Any Reference numeral in the claim should not be construed as the restriction to scope.
Claims (12)
1. one kind is used for the method that accesses at random in the user terminal based on the cordless communication network of carrier aggregation transmission, and wherein, this carrier wave comprises main plot and at least one from the residential quarter, and the method may further comprise the steps:
When carrying out random access procedure, obtains this user terminal random access trigger request, perhaps this user terminal obtains a plurality of random access trigger request simultaneously, and when in the residential quarter of carrying out random access procedure and random access trigger request, comprising at least one from the residential quarter, according to pre-defined rule, be chosen on the residential quarter in this residential quarter of accessing at random and/or accessing at random trigger request and carry out random access procedure.
2. method according to claim 1, wherein, described pre-defined rule comprises each in the following:
I. ought carry out in the residential quarter of the random access of the residential quarter of random access procedure and trigger request or in the residential quarter of the random access of a plurality of trigger request, when only comprising a main plot and at least one from the residential quarter, access at random in this main plot;
II. when in the residential quarter of the random access of the residential quarter of carrying out random access procedure and trigger request or a plurality of from the residential quarter and when not comprising the main plot when comprising in the residential quarter that a plurality of trigger request access at random, in these a plurality of employings from the residential quarter based on the accessing at random from the residential quarter of non-competing Random Access, perhaps being embodied in one of them and accessing at random from the residential quarter according to this user terminal;
III. a plurality of from the residential quarter and when not comprising the main plot when comprising in the residential quarter of the random access of the residential quarter of carrying out random access procedure and trigger request, and these a plurality of Random Access that are from the residential quarter based on competition, continuation is accessing at random from the residential quarter of accessing at random, perhaps being embodied in one of them and accessing at random from the residential quarter according to this user terminal;
IV. a plurality of from the residential quarter and when not comprising the main plot when comprising in the residential quarter of the random access of a plurality of trigger request, trigger request based on non-competing accessing at random from the residential quarter, perhaps being embodied in one of them and accessing at random from the residential quarter according to this user terminal.
3. method according to claim 1 also comprises:
-when the residential quarter of selecting to carry out random access procedure is accessed at random, postpone or abandon random access trigger request; Or
-when the residential quarter of selecting a random access trigger request is accessed at random, stop ongoing random access procedure and postponement or abandon other random access trigger request; Or
-when the residential quarter of selecting a random access trigger request is accessed at random, postpone or abandon other accessing at random trigger request.
4. method according to claim 3, when postponing other random access trigger request, the method also comprises:
Carrying out the random access of the residential quarter of random access procedure when having finished, perhaps finished after the random access of residential quarter of a selected random access trigger request, judged that whether the residential quarter of the random access trigger request that this is postponed is based on non-competing random access;
If the residential quarter of the random access trigger request that this quilt is postponed is based on non-competing random access, judge whether the special random access preamble code corresponding with this random access trigger request of being postponed lost efficacy;
If-this special random access preamble code did not lose efficacy, according to this lead code, carry out based on non-competing random access in the residential quarter of this random access trigger request of being postponed;
If-this special random access preamble code lost efficacy, carry out based on the random access of competing in the residential quarter of this random access trigger request of being postponed;
If the residential quarter of the random access trigger request that this quilt is postponed is based on the random access of competition, carry out based on the random access of competing in the residential quarter of this random access trigger request of being postponed.
5. one kind is used for the method that assist user terminal accesses at random in the base station based on the cordless communication network of carrier aggregation transmission, and wherein, this carrier wave comprises main plot and at least one from the residential quarter, and the method may further comprise the steps:
Judge the ongoing random access of this user terminal whether based on non-competing or by base station triggers based on competition;
If the ongoing random access of this user terminal be based on non-competing or by base station triggers based on competition, judge then whether this user terminal accesses at random in the main plot,
If-this user terminal just accesses at random in the main plot, then postpone sending random access request to this user terminal;
If-this user terminal accesses at random from the residential quarter, if then still need to be sent in random access trigger request on the main plot to this user terminal, be sent in random access trigger request on this main plot to this user terminal.
6. method according to claim 5, wherein, described method also comprises:
If user terminal is accessing at random from the residential quarter, and if need to be sent in random access request from the residential quarter to this user terminal the time, judge that described ongoing random access is based on also being based on of competition non-competing;
If it is non-competing that this user terminal is based in ongoing random access from the residential quarter, postpone being sent in random access trigger request from the residential quarter to user terminal;
If user terminal is based on competition in ongoing random access from the residential quarter,
-when need to be sent in to this user terminal from the residential quarter based on non-competing random access request the time, to this user terminal be sent in this from the residential quarter based on non-competing random access trigger request;
-when need to be sent in to this user terminal from the residential quarter based on the random access request of competition the time, postpone being sent in this random access trigger request based on competition from the residential quarter to this user terminal.
7. one kind is used for the first device that accesses at random in the user terminal based on the cordless communication network of carrier aggregation transmission, and wherein, this carrier wave comprises main plot and at least one from the residential quarter, and this first device comprises:
Access device, be used for when this user terminal carries out random access procedure, obtaining random access trigger request, perhaps this user terminal obtains a plurality of random access trigger request simultaneously, and when in the residential quarter of carrying out random access procedure and random access trigger request, comprising at least one from the residential quarter, according to pre-defined rule, be chosen on the residential quarter in this residential quarter of accessing at random and/or accessing at random trigger request and carry out random access procedure.
8. first device according to claim 7, wherein, described pre-defined rule comprises each in the following:
I. ought carry out in the residential quarter of the random access of the residential quarter of random access procedure and trigger request or in the residential quarter of the random access of a plurality of trigger request, when only comprising a main plot and at least one from the residential quarter, access at random in this main plot;
II. when in the residential quarter of the random access of the residential quarter of carrying out random access procedure and trigger request or a plurality of from the residential quarter and when not comprising the main plot when comprising in the residential quarter that a plurality of trigger request access at random, in these a plurality of employings from the residential quarter based on the accessing at random from the residential quarter of non-competing Random Access, perhaps being embodied in one of them and accessing at random from the residential quarter according to this user terminal;
III. when in the residential quarter of the random access of the residential quarter of carrying out random access procedure and trigger request or a plurality of from the residential quarter and when not comprising the main plot when comprising in the residential quarter that a plurality of trigger request access at random, and these a plurality of Random Access that are from the residential quarter based on competition, continuation is accessing at random from the residential quarter of accessing at random, perhaps being embodied in one of them and accessing at random from the residential quarter according to this user terminal.
9. first device according to claim 7 also is used for:
-when the residential quarter of selecting to carry out random access procedure is accessed at random, postpone or abandon random access trigger request; Or
-when the residential quarter of selecting a random access trigger request is accessed at random, stop ongoing random access procedure and postponement or abandon other random access trigger request; Or
-when the residential quarter of selecting a random access trigger request is accessed at random, postpone or abandon other accessing at random trigger request.
10. first device according to claim 9, when postponing other random access trigger request, this device also is used for:
Carrying out the random access of the residential quarter of random access procedure when having finished, perhaps finished after the random access of residential quarter of a selected random access trigger request, judged that whether the residential quarter of the random access trigger request that this is postponed is based on non-competing random access;
If the residential quarter of the random access trigger request that this quilt is postponed is based on non-competing random access, judge whether the special random access preamble code corresponding with this random access trigger request of being postponed lost efficacy;
If-this special random access preamble code did not lose efficacy, according to this lead code, carry out based on non-competing random access in the residential quarter of this random access trigger request of being postponed;
If-this special random access preamble code lost efficacy, carry out based on the random access of competing in the residential quarter of this random access trigger request of being postponed;
If the residential quarter of the random access trigger request that this quilt is postponed is based on the random access of competition, carry out based on the random access of competing in the residential quarter of this random access trigger request of being postponed.
11. one kind is used for the second device that assist user terminal accesses at random in the base station based on the cordless communication network of carrier aggregation transmission, wherein, this carrier wave comprises main plot and at least one from the residential quarter, and this device is used for:
Judge the ongoing random access of this user terminal whether based on non-competing or by base station triggers based on competition;
If the ongoing random access of this user terminal be based on non-competing or by base station triggers based on competition, judge then whether this user terminal accesses at random in the main plot,
If-this user terminal just accesses at random in the main plot, then postpone sending random access request to this user terminal;
If-this user terminal accesses at random from the residential quarter, if then still need to be sent in random access trigger request on the main plot to this user terminal, be sent in random access trigger request on this main plot to this user terminal.
12. the second device according to claim 11 also is used for:
If user terminal is accessing at random from the residential quarter, and if need to be sent in random access request from the residential quarter to this user terminal the time, judge that described ongoing random access is based on also being based on of competition non-competing;
If it is non-competing that this user terminal is based in ongoing random access from the residential quarter, postpone being sent in random access trigger request from the residential quarter to user terminal;
If user terminal is based on competition in ongoing random access from the residential quarter,
-when need to be sent in to this user terminal from the residential quarter based on non-competing random access request the time, to this user terminal be sent in this from the residential quarter based on non-competing random access trigger request;
-when need to be sent in to this user terminal from the residential quarter based on the random access request of competition the time, postpone being sent in this random access trigger request based on competition from the residential quarter to this user terminal.
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| CN102932952B (en) | 2016-06-08 |
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