CN102932952B - A kind of method and apparatus carrying out Stochastic accessing - Google Patents
A kind of method and apparatus carrying out Stochastic accessing Download PDFInfo
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- CN102932952B CN102932952B CN201110233633.3A CN201110233633A CN102932952B CN 102932952 B CN102932952 B CN 102932952B CN 201110233633 A CN201110233633 A CN 201110233633A CN 102932952 B CN102932952 B CN 102932952B
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Abstract
The present invention proposes the method and apparatus in the user terminal of the cordless communication network transmitted based on carrier aggregation for carrying out Stochastic accessing, in the method, this carrier wave includes main plot and at least one is from community, the method comprises the following steps: obtains Stochastic accessing while this user terminal carries out random access procedure and triggers request, or this user terminal obtains multiple Stochastic accessing and triggers request simultaneously, and when comprising at least one from community in the community carrying out random access procedure and Stochastic accessing triggering request, according to pre-defined rule, select carrying out a community in the community of Stochastic accessing and/or Stochastic accessing triggering request carries out random access procedure at this.
Description
Technical field
The present invention, based on the radio communication of carrier aggregation technology, particularly relates to the method and apparatus that user terminal carries out Stochastic accessing and the method and apparatus carrying out Stochastic accessing for indicating user terminal in base station.
Background technology
In the version 8-10 (Rel8-10) of existing 3GPP, it is believed that aloft interface only carries out a physical accidental access procedure (PhysicalRandomAccessChannel, PRACH). Although introducing carrier aggregation (CarrierAggregation, CA) and the concept from community (SecondaryCell, Scell) in Rel10. Such as, the carrier component that user terminal is successfully accessed first can be called main plot (PrimaryCell, Pcell), other standby carrier components are called from community (SecondaryCell, Scell), certainly, user terminal correspondingly can also change main plot and the selection from community according to the triggering of base station. For Scell, from the angle of user terminal, it is allocating random access channel (RandomAccessChannel not, Stochastic accessing) configuration, because Scell need not be timed in advance, also referred to as timing alignment (TimeAdvancementorTimeAlignment, TA), owing to not carrying out upstream time alignment, therefore up asynchronous, thus Stochastic accessing cannot be carried out on Scell. Therefore, Rel10 and Rel8 and Rel9 is identical, namely user terminal is merely capable of on Pcell to carry out Stochastic accessing. And in Rel11, except carrying out Stochastic accessing on Pcell, since it is desired that carry out time advance/alignment on Scell, it is thus also possible to carry out Stochastic accessing on Scell.
At traditional Rel8, in Rel9 and R10, in some scenes, PDCCH order signaling is sent by network, to trigger user terminal initiation physical accidental access, and simultaneously, user terminal is carrying out random access procedure, such as lose synchronization corresponding to the up of user terminal, and when upstream data arrives, user terminal oneself can trigger the scene of random access procedure. If it occur that such scene, owing to merely relating to Pcell, therefore determined how process by implementing of user terminal. But, in Rel11, because user terminal can also carry out Stochastic accessing on Scell, if the Stochastic accessing existed on Pcell triggers request and the Stochastic accessing on Scell triggers request simultaneously, prior art can not solve the situation occurred in this Rel11.
Summary of the invention
According to the first aspect of the invention, provide a kind of method in the user terminal of the cordless communication network transmitted based on carrier aggregation for carrying out Stochastic accessing, wherein, this carrier wave includes main plot and at least one is from community, the method comprises the following steps: obtains Stochastic accessing while this user terminal carries out random access procedure and triggers request, or this user terminal obtains multiple Stochastic accessing and triggers request simultaneously, and when comprising at least one from community in the community carrying out random access procedure and Stochastic accessing triggering request, according to pre-defined rule, select carrying out a community in the community of Stochastic accessing and/or Stochastic accessing triggering request carries out random access procedure at this.
According to the second aspect of the invention, provide a kind of method carrying out Stochastic accessing for assist user terminal in the base station of the cordless communication network transmitted based on carrier aggregation, wherein, this carrier wave includes main plot and at least one is from community, and the method comprises the following steps: judge the ongoing Stochastic accessing of this user terminal whether be based on non-competing or by base station triggers based on competition; If the ongoing Stochastic accessing of this user terminal be based on non-competing or by base station triggers based on competition, then judge whether this user terminal carries out Stochastic accessing on main plot, if-this user terminal is just carrying out Stochastic accessing on main plot, then postpone sending random access request to this user terminal; If-this user terminal is carrying out Stochastic accessing from community, if then remaining a need for the Stochastic accessing to this user terminal is sent on main plot to trigger request, being sent in the Stochastic accessing on this main plot to this user terminal and triggering request.
According to the third aspect of the invention we, provide a kind of in the user terminal of the cordless communication network transmitted based on carrier aggregation for carrying out the first device of Stochastic accessing, wherein, this carrier wave includes main plot and at least one is from community, this device includes: access device, request is triggered for obtaining Stochastic accessing while carrying out random access procedure when this user terminal, or this user terminal obtains multiple Stochastic accessing and triggers request simultaneously, and when comprising at least one from community in the community carrying out random access procedure and Stochastic accessing triggering request, according to pre-defined rule, select carrying out a community in the community of Stochastic accessing and/or Stochastic accessing triggering request carries out random access procedure at this.
According to the fourth aspect of the invention, provide a kind of the second device carrying out Stochastic accessing in the base station of the cordless communication network transmitted based on carrier aggregation for assist user terminal, wherein, this carrier wave includes main plot and at least one is from community, and this device is used for: judge the ongoing Stochastic accessing of this user terminal whether be based on non-competing or by base station triggers based on competition; If the ongoing Stochastic accessing of this user terminal be based on non-competing or by base station triggers based on competition, then judge whether this user terminal carries out Stochastic accessing on main plot, if-this user terminal is just carrying out Stochastic accessing on main plot, then postpone sending random access request to this user terminal; If-this user terminal is carrying out Stochastic accessing from community, if then remaining a need for the Stochastic accessing to this user terminal is sent on main plot to trigger request, being sent in the Stochastic accessing on this main plot to this user terminal and triggering request.
Adopt the solution of the present invention, it is preferable that, it is possible to shorten access delay, and save downlink signaling expense.
Accompanying drawing explanation
The following detailed description to non-limiting example is read, the further feature of the present invention, device block diagram according to the specific embodiment of the present invention by referring to accompanying drawing.
Fig. 1 illustrates the method flow diagram of the operation of the user terminal of a specific embodiment according to the present invention;
Fig. 2 illustrates the method flow diagram of the operation of the base station of a specific embodiment according to the present invention.
Wherein, same or analogous accompanying drawing labelling represents same or analogous steps characteristic or device/module. Purpose and advantage will become more apparent upon.
Detailed description of the invention
According to current state, had agreed to network-triggered on Scell based on non-competing Stochastic accessing, this method is applicable at least realize aliging for the upstream time of newly configured Scell. Because for newly configured Scell, only having base station and be aware of when that scheduling uses this Scell. In Rel10, when time advance timer (TimeAdvancementTimer, TAT) to after date, user terminal automatically will trigger random access procedure on Pcell. In Rel11, no matter adopt be the TAT for user terminal or, for the TAT that timing advance (TA) is organized, be likely to produce Scell lose uplink synchronous. So-called for TA group TAT, refer to Scell and/or Pcell in a group, there is identical timing-advance information. Such as, for the situation for user terminal TAT, when TAT expires, user terminal will be considered to all Scell groups and loses uplink synchronous. And for the situation of the TAT for TA group, as TAT to after date, user terminal is also considered as the TA group corresponding with this TAT and loses uplink synchronous.
It addition, expire as TAT, user terminal knows the Scell being currently in use an activation (active), and otherwise, base station should deexcitation in advance or discharge these Scell. Therefore, when Scell group expires TAT to after date, user terminal automatically triggers the random access procedure on the Scell activated and need not to carry out triggering be rational in base station, this mode shortens access delay, and save downlink signaling expense, because user terminal withouts waiting for the further instruction of base station, it is possible to trigger random access procedure voluntarily. This mode also with the behavior of the user terminal in R10 namely when TAT to after date, user terminal triggers Stochastic accessing automatically, is consistent.
In Rel11, when multiple TAgroup need to carry out uplink synchronous at the same time, it is possible to the situation of parallel Stochastic accessing can be produced. This situation be likely in following scene occur: user terminal recovers from up losing synchronization, or after the handover or when uplink service increase after. For the up scene losing synchronization, unlikely when being immediately required to big data transfer rate after user terminal uplink synchronous. Similarly, for the increase of uplink service, it is generally increased gradually for data transfer rate, unlikely within very short time, needs substantial amounts of Scell resource. For switching, in order to keep high data transfer rate, it may be necessary to extra Scell resource. But, from the angle disposed, in the process of switching, the unlikely employing High Data Rate of user terminal. Also because reason same above, having agreed to after handover, Scell is in unactivated state.Due to above-mentioned, because in the above-mentioned situation needing Stochastic accessing, the unlikely horse back of user terminal needs higher data transfer rate, therefore, there is no need to support to carry out multiple Stochastic accessing, unless created new scene simultaneously. In Rel11, another avoids the major reason simultaneously carrying out multiple Stochastic accessing to be reduce testing requirement, and user terminal does not need the scene of tested parallel Stochastic accessing.
If but as it has been described above, adopt user terminal to trigger the Stochastic accessing on Scell in Rel11, these parallel Stochastic accessing situations will be occurred for following scene, be divided into the TAT for user terminal still for two kinds of situations of TAT of TA group:
�� for the situation of the TAT for user terminal:
As TAT to after date, user terminal needs all to carry out the Stochastic accessing based on competition in Pcell and Scell group;
As TAT to after date, user terminal will trigger the Stochastic accessing on Pcell or Scell, but have at least one also in process by the random access procedure on Scell of base station triggers.
�� for the situation of the TAT for TA group:
The TAT of two TA groups expires simultaneously
The TAT of one TA group expires, and still has ongoing random access procedure in another TA group
�� when user terminal is just carrying out the Stochastic accessing based on competition on Scell, base station wishes to trigger based on non-competing Stochastic accessing on same Scell, because based in non-competing Stochastic accessing, user terminal adopts special random access preamble code, need not compete with other user terminals, therefore increase the successful probability of Stochastic accessing and shorten uplink synchronous delay.
In sum, random access collision in Rel11, namely Stochastic accessing is likely to produce in following several scenes parallel:
The random access collision of scene 1:Pcell and Scell, it is possible to be subdivided into following three seed scenes:
�� subfield scape 1.1: have ongoing Stochastic accessing on Scell, triggers request Stochastic accessing on Pcell;
�� subfield scape 1.2: have ongoing Stochastic accessing on Pcell, triggers request Stochastic accessing on Scell;
�� subfield scape 1.3: do not have ongoing Stochastic accessing, triggers request Stochastic accessing on Pcell and Scell simultaneously.
Scene 2: the random access collision on different Scell, it is possible to include following two subfield scape:
�� subfield scape 2.1: have ongoing Stochastic accessing on Scell, triggers request Stochastic accessing on another Scell
�� subfield scape 2.2: simultaneously need to request triggers random access procedure on multiple Scell.
Scene 3: produce random access collision on same Scell
For these scenes above-mentioned, the behavior needs of user terminal specifies in a standard. The behavior of user terminal can adopt any one in following three kinds of modes to carry out:
Option one: user terminal continues ongoing Stochastic accessing, and postpones follow-up Stochastic accessing triggering request
Option 2: user terminal stops current ongoing Stochastic accessing, starts the new Stochastic accessing triggering request
Option 3: user terminal continues ongoing Stochastic accessing, and abandons follow-up Stochastic accessing triggering request
Option 4: do not have ongoing RACH for user terminal, according to pre-defined rule, selects a suitable PRACH to trigger request
For option one, it is all applicable for most scene. But, if user terminal trigger request random access procedure be for Pcell's and be delayed by, this will be undesirable.For option 2 and option 3, this will depend upon which the importance of random access procedure that is ongoing or that trigger request. Because usually, the reliability of the connection on Pcell is the highest, therefore, generally gives the random access procedure on Pcell with limit priority. Based on above-mentioned principle, in order to optimize the behavior of user terminal, for different scenes, it is necessary to adopt different options.
User terminal first determines whether ongoing Stochastic accessing or triggers in the Stochastic accessing asked whether comprise Pcell, if user terminal first determines whether to comprise a Pcell and at least one Scell in the Stochastic accessing that ongoing Stochastic accessing or triggering are asked, it is divided into following several scene 1.1-1.3 to discuss.
For subfield scape 1.1
When the Stochastic accessing that request triggers on Pcell, and there is ongoing Stochastic accessing at Scell, then adopt option 2, that is, the ongoing Stochastic accessing stopped on Scell, and begin at the Stochastic accessing on Pcell. After user terminal carries out Stochastic accessing by air interface on Pcell, base station is it will be appreciated that the Stochastic accessing on Scell stops.
For subfield scape 1.2
When there being ongoing Stochastic accessing on Pcell, it is possible to employing or option one or option 3 are operated, continue the Stochastic accessing on current Pcell, and postpone or abandon the follow-up Stochastic accessing on Scell triggering request. Then, user terminal is after completing ongoing random access procedure, it is judged that the Stochastic accessing postponed trigger the corresponding Scell of request be based on competition be also based on non-competing.
�� it is by Physical Downlink Control Channel order signaling (PhysicalDownlinkControlChannel by base station that if the follow-up Stochastic accessing on Scell triggers request, PDCCH) trigger based on non-competing, then when after the Stochastic accessing success on Pcell, user terminal judge base station before for user terminal distribution on Scell based on whether also effectively non-competing Stochastic accessing triggers request dedicated preamble used, namely, user terminal judges that whether the dedicated preamble comprised in the PDCCH order signaling sent to user terminal in base station is still effective, if it is still effective, the random access procedure that then ground is triggered on Scell by user terminal.
Whereas if this dedicated preamble lost efficacy, then user terminal can automatically trigger the Stochastic accessing based on competition on Scell, without waiting the further signaling from base station, thus shortening delay.
�� it is triggered by Physical Downlink Control Channel order signaling by base station or user terminal oneself triggers based on competition that if the follow-up Stochastic accessing on Scell triggers request, then when after the Stochastic accessing success on Pcell, user terminal withouts waiting for the further instruction of user terminal, but directly trigger on corresponding Scell based on competition, thus shortening time delay.
For subfield scape 1.3
User terminal adopts option 4, that is, first user terminal responds the Stochastic accessing on Pcell triggers request, then, then triggers the Stochastic accessing triggering request on Scell, or waits the new instruction of base station.
In another kind of situation, if user terminal judged result is do not comprise Pcell in ongoing Stochastic accessing or the Stochastic accessing triggering request, but comprise multiple Scell, then discuss according to following scene 2 and scene 3:
For scene 2
Namely, conflict corresponding to the Stochastic accessing from different Scell, wherein can comprise the Stochastic accessing just carried out on Scell and trigger conflicting of request with the Stochastic accessing on other Scell, when can also comprise the conflict that the Stochastic accessing on multiple Scell triggers request simultaneously, can using based on non-competing Stochastic accessing as limit priority, it is of course also possible to implementing according to user terminal, user terminal determine.
If the strategy of user terminal is for Scell Stochastic accessing, using during based on non-competing Stochastic accessing as limit priority, then whether ongoing or triggering request the Stochastic accessing that user terminal first determines whether on Scell is based on non-competing.
�� if ongoing Stochastic accessing is based on non-competing, it is possible to adopt option one or 3. That is, user terminal continues current based on non-competing Stochastic accessing, postpone or abandon Stochastic accessing subsequently triggering request. After current random access procedure terminates, no matter whether this random access procedure is successful, and user terminal adopts following behavior, to optimize performance:
If Stochastic accessing follow-up for �� triggers request and is also based on non-competing and special lead code still effectively, user terminal can correspondingly trigger based on non-competing Stochastic accessing on corresponding Scell.
Otherwise, user terminal can trigger the Stochastic accessing based on competition to �� on corresponding Scell;
�� or, user terminal will not carry out any work, and is to wait for the further instruction of base station.
�� if ongoing Stochastic accessing is based on competition, and follow-up Stochastic accessing triggers request and is based on non-competing, then user terminal can consider option 2
�� user terminal stops the current Stochastic accessing based on competition on Scell, and according to triggering request based on non-competing Stochastic accessing on another Scell, begin on this another Scell based on non-competing Stochastic accessing. Terminate this based on non-competing random access procedure after, no matter this random access procedure whether success, user terminal or can continue the Stochastic accessing carried out on Scell previously based on competition, or waits the further instruction of base station.
�� if ongoing Stochastic accessing is based on competition, and follow-up Stochastic accessing triggers request and is also based on competition, then user terminal can be considered as option one and option 3. That is, continue ongoing random access procedure, and postpone or abandon follow-up Stochastic accessing triggering request. After current random access procedure terminates, user terminal can start and the random access procedure triggered on the Scell that request is corresponding postponed before or abandon.
�� if there is no ongoing Stochastic accessing, and ask the Stochastic accessing triggered to be both for Scell's, including based on competition and based on non-competing, then user terminal is based on carrying out Stochastic accessing on non-competing Scell, or according to user terminal realize concrete be determined first carrying out on which Scell Stochastic accessing.
For scene 3
The Stochastic accessing with subsequent triggers of current ongoing Stochastic accessing is all the situation of same Scell, it is the highest or be determined according to implementing of user terminal that main principle is still based on non-competing Stochastic accessing priority, this implements the configuration parameter etc. depending on subscriber terminal equipment production firm, being determined by each production firm, different manufacturers is likely to carry out different configurations.
�� if currently ongoing be based on non-competing Stochastic accessing, then user terminal can adopt option 3
If �� the currently ongoing Stochastic accessing being based on competition, and the Stochastic accessing triggering request is based on non-competing, then user terminal can adopt option 2, to improve the success rate of Stochastic accessing and to shorten delay
�� if multiple Stochastic accessing trigger request and are all based on competition, then user terminal can adopt option 3, still provide for current Stochastic accessing, and abandon Stochastic accessing triggering request.
Specific embodiments of the invention are described by each above embodiment from the angle of the behavior of user terminal, wherein, each user terminal is by certain operation, avoid simultaneously between Pcell and Scell, between different Scell or adopting based on competition and conflicting with random access request based between non-competing same Scell, ongoing Stochastic accessing, or the conflict between multiple random access requests, thus preferably improve the success rate of Stochastic accessing. Hereinafter, according to the second aspect of the invention, base station will be described in order to avoid the behavior of the example of above-mentioned conflict.
It is appreciated that, base station only just knows that by the Stochastic accessing based on competition of the user terminal of its triggering, namely its know certain by its distribution for carry out based on competition Stochastic accessing Pcell or Scell on be which user terminal, again owing to special random access lead code can be reserved to specific user terminal in base station, therefore, base station knows which user terminal carries out on Pcell or Scell based on non-competing Stochastic accessing is. And base station cannot know that the Stochastic accessing based on competition triggered by user terminal is which user terminal is carrying out. Because from the angle of base station, it only just knows that there is the Stochastic accessing based on competition at this Pcell or Scell, but is not aware which user terminal being concrete is carrying out this Stochastic accessing. Therefore, base station only can for based on non-competing or be scheduling controlling by the Stochastic accessing based on competition of base station triggers.
First base station judge the ongoing Stochastic accessing of this user terminal whether be based on non-competing or by base station triggers based on competition;
If the ongoing Stochastic accessing of this user terminal be based on non-competing or by base station triggers based on competition, then judge whether this user terminal carries out Stochastic accessing on main plot,
�� if this user terminal is just carrying out Stochastic accessing on main plot, then postpone sending random access request to this user terminal;
�� if this user terminal is carrying out Stochastic accessing from community, then it is in main plot or from community that the Stochastic accessing judging whether to send triggers request:
If remaining a need for the Stochastic accessing to this user terminal is sent on main plot to trigger request, being sent in the Stochastic accessing on this main plot to this user terminal and triggering request;
If user terminal is carrying out Stochastic accessing from community, and if need to this user terminal be sent in from random access request community time, then judge described ongoing Stochastic accessing be based on competition be also based on non-competing;
If this user terminal of �� is being based on non-competing from Stochastic accessing ongoing on community, postpone being sent in user terminal triggering request from the Stochastic accessing community;
If �� user terminal is being based on competition from Stochastic accessing ongoing on community, then the random access request continuing to judge whether to trigger be based on competition be also based on non-competing:
�� when need to this user terminal be sent in from community based on non-competing random access request time, be sent in this from community triggers request based on non-competing Stochastic accessing to this user terminal;
�� when need to this user terminal be sent in from community based on competition random access request time, postpone to this user terminal be sent in this from community based on competition Stochastic accessing trigger request.
From method angle, the present invention is described in detail above, below, will be described by the present invention from design factors, because apparatus and method are corresponding modes, therefore, device is only described briefly.
It is based in the cordless communication network of carrier aggregation transmission according to user terminal, this carrier wave includes main plot and at least one is from community, this first device includes: access device, request is triggered for obtaining Stochastic accessing while carrying out random access procedure when this user terminal, or this user terminal obtains multiple Stochastic accessing and triggers request simultaneously, and when comprising at least one from community in the community carrying out random access procedure and Stochastic accessing triggering request, according to pre-defined rule, select carrying out a community in the community of Stochastic accessing and/or Stochastic accessing triggering request carries out random access procedure at this.
Above embodiments of the invention being described, but the invention is not limited in specific system, equipment and concrete agreement, those skilled in that art can make various deformation or amendment within the scope of the appended claims.
The those skilled in the art of those the art can pass through to study description, disclosure and accompanying drawing and appending claims, and other of understanding and the enforcement embodiment to disclosing change. In the claims, word " includes " element and the step that are not excluded for other, and wording " one " is not excluded for plural number. In the present invention, " first ", " second " only represent title, do not represent orbution. In the practical application of invention, a part is likely to perform the function of multiple technical characteristics cited in claim. Any accompanying drawing labelling in claim should not be construed as the restriction to scope.
Claims (10)
1. the method being used for carrying out Stochastic accessing in the user terminal of the cordless communication network transmitted based on carrier aggregation, wherein, this cordless communication network includes main plot and at least one is from community, and the method comprises the following steps:
While this user terminal carries out random access procedure, obtain Stochastic accessing trigger request, or this user terminal obtains multiple Stochastic accessing and triggers request simultaneously, and when comprising at least one from community in the community carrying out random access procedure and Stochastic accessing triggering request, according to pre-defined rule, select carrying out a community in the community of Stochastic accessing and/or Stochastic accessing triggering request carries out random access procedure at this;
Described pre-defined rule includes:
When carry out random access procedure community and trigger request Stochastic accessing community in or when multiple trigger request Stochastic accessing communities in, only comprise a main plot and at least one from community time, this main plot carries out Stochastic accessing.
2. method according to claim 1, also includes:
-when selecting the community carrying out random access procedure to carry out Stochastic accessing, postpone or abandon Stochastic accessing triggering request; Or
-when the community selecting a Stochastic accessing to trigger request carries out Stochastic accessing, stop ongoing random access procedure and postponement or abandon the triggering request of other Stochastic accessing; Or
-when the community selecting a Stochastic accessing to trigger request carries out Stochastic accessing, postpone or abandon other Stochastic accessing triggering request.
3. method according to claim 2, when postponing other Stochastic accessing and triggering request, the method also includes:
When completing the Stochastic accessing in the community carrying out random access procedure, or after completing the Stochastic accessing of community that a selected Stochastic accessing triggers request, it is judged that the Stochastic accessing that this is postponed triggers whether the community of request is based on non-competing Stochastic accessing;
If the community that the Stochastic accessing that this is postponed triggers request is based on non-competing Stochastic accessing, it is judged that the Stochastic accessing postponed with this triggers asks whether corresponding special random access preamble code lost efficacy;
If-this special random access preamble code did not lose efficacy, according to this lead code, the community that this Stochastic accessing postponed triggers request carry out based on non-competing Stochastic accessing;
If-this special random access preamble code lost efficacy, the community that this Stochastic accessing postponed triggers request carries out the Stochastic accessing based on competition;
If the Stochastic accessing that this is postponed triggers the community asked and is based on the Stochastic accessing of competition, the community that this Stochastic accessing postponed triggers request carries out the Stochastic accessing based on competition.
4. the method carrying out Stochastic accessing for assist user terminal in the base station of the cordless communication network transmitted based on carrier aggregation, wherein, this cordless communication network includes main plot and at least one is from community, and the method comprises the following steps:
Judge the ongoing Stochastic accessing of this user terminal whether be based on non-competing or by base station triggers based on competition;
If the ongoing Stochastic accessing of this user terminal be based on non-competing or by base station triggers based on competition, then judge whether this user terminal carries out Stochastic accessing on main plot,
If-this user terminal is just carrying out Stochastic accessing on main plot, then postpone sending random access request to this user terminal;
If-this user terminal is carrying out Stochastic accessing from community, if then remaining a need for the Stochastic accessing to this user terminal is sent on main plot to trigger request, being sent in the Stochastic accessing on this main plot to this user terminal and triggering request.
5. method according to claim 4, wherein, described method also includes:
If user terminal is carrying out Stochastic accessing from community, and if need to this user terminal be sent in from random access request community time, it is judged that described ongoing Stochastic accessing be based on competition be also based on non-competing;
If this user terminal is being based on non-competing from Stochastic accessing ongoing on community, postpone being sent in user terminal triggering request from the Stochastic accessing community;
If user terminal is being based on competition from Stochastic accessing ongoing on community,
-when need to this user terminal be sent in from community based on non-competing random access request time, be sent in this from community triggers request based on non-competing Stochastic accessing to this user terminal;
-when need to this user terminal be sent in from community based on competition random access request time, postpone to this user terminal be sent in this from community based on competition Stochastic accessing trigger request.
6. for carrying out a first device for Stochastic accessing in the user terminal of the cordless communication network transmitted based on carrier aggregation, wherein, this cordless communication network includes main plot and at least one is from community, and this first device includes:
Access device, request is triggered for obtaining Stochastic accessing while carrying out random access procedure when this user terminal, or this user terminal obtains multiple Stochastic accessing and triggers request simultaneously, and when comprising at least one from community in the community carrying out random access procedure and Stochastic accessing triggering request, according to pre-defined rule, select carrying out a community in the community of Stochastic accessing and/or Stochastic accessing triggering request carries out random access procedure at this;
Described pre-defined rule includes:
When carry out random access procedure community and trigger request Stochastic accessing community in or when multiple trigger request Stochastic accessing communities in, only comprise a main plot and at least one from community time, this main plot carries out Stochastic accessing.
7. first device according to claim 6, is additionally operable to:
-when selecting the community carrying out random access procedure to carry out Stochastic accessing, postpone or abandon Stochastic accessing triggering request;Or
-when the community selecting a Stochastic accessing to trigger request carries out Stochastic accessing, stop ongoing random access procedure and postponement or abandon the triggering request of other Stochastic accessing; Or
-when the community selecting a Stochastic accessing to trigger request carries out Stochastic accessing, postpone or abandon other Stochastic accessing triggering request.
8. first device according to claim 7, when postponing other Stochastic accessing and triggering request, this first device is additionally operable to:
When completing the Stochastic accessing in the community carrying out random access procedure, or after completing the Stochastic accessing of community that a selected Stochastic accessing triggers request, it is judged that the Stochastic accessing that this is postponed triggers whether the community of request is based on non-competing Stochastic accessing;
If the community that the Stochastic accessing that this is postponed triggers request is based on non-competing Stochastic accessing, it is judged that the Stochastic accessing postponed with this triggers asks whether corresponding special random access preamble code lost efficacy;
If-this special random access preamble code did not lose efficacy, according to this lead code, the community that this Stochastic accessing postponed triggers request carry out based on non-competing Stochastic accessing;
If-this special random access preamble code lost efficacy, the community that this Stochastic accessing postponed triggers request carries out the Stochastic accessing based on competition;
If the Stochastic accessing that this is postponed triggers the community asked and is based on the Stochastic accessing of competition, the community that this Stochastic accessing postponed triggers request carries out the Stochastic accessing based on competition.
9. carry out second device of Stochastic accessing in the base station of the cordless communication network transmitted based on carrier aggregation for assist user terminal, wherein, this cordless communication network includes main plot and at least one is from community, and this second device includes:
First judges sub-device, described first judge sub-device for judge the ongoing Stochastic accessing of this user terminal whether be based on non-competing or by base station triggers based on competition;
Second judges sub-device, and described second judges that sub-device is used for, if the ongoing Stochastic accessing of this user terminal be based on non-competing or by base station triggers based on competition, then judge whether this user terminal carries out Stochastic accessing on main plot,
If-this user terminal is just carrying out Stochastic accessing on main plot, then postpone sending random access request to this user terminal;
If-this user terminal is carrying out Stochastic accessing from community, if then remaining a need for the Stochastic accessing to this user terminal is sent on main plot to trigger request, being sent in the Stochastic accessing on this main plot to this user terminal and triggering request.
10. the second device according to claim 9, also includes:
3rd judges sub-device, described 3rd judges that sub-device is used for, if user terminal is carrying out Stochastic accessing from community, if and need to this user terminal be sent in from random access request community time, it is judged that described ongoing Stochastic accessing be based on competition be also based on non-competing;
If this user terminal is being based on non-competing from Stochastic accessing ongoing on community, postpone being sent in user terminal triggering request from the Stochastic accessing community;
If user terminal is being based on competition from Stochastic accessing ongoing on community,
-when need to this user terminal be sent in from community based on non-competing random access request time, be sent in this from community triggers request based on non-competing Stochastic accessing to this user terminal;
-when need to this user terminal be sent in from community based on competition random access request time, postpone to this user terminal be sent in this from community based on competition Stochastic accessing trigger request.
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| CN201110233633.3A CN102932952B (en) | 2011-08-12 | 2011-08-12 | A kind of method and apparatus carrying out Stochastic accessing |
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| CN201110233633.3A CN102932952B (en) | 2011-08-12 | 2011-08-12 | A kind of method and apparatus carrying out Stochastic accessing |
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| CN102055700A (en) * | 2009-10-28 | 2011-05-11 | 中兴通讯股份有限公司 | Method and device for CC configuration in CA |
| CN102118801A (en) * | 2011-03-31 | 2011-07-06 | 电信科学技术研究院 | Method and device for unlink transmission in multicarrier aggregation system |
| CN102123516A (en) * | 2011-03-31 | 2011-07-13 | 电信科学技术研究院 | Random access method and equipment based on multiple uplink timing advances |
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| CN102036411A (en) * | 2010-12-02 | 2011-04-27 | 大唐移动通信设备有限公司 | Method and device for random access |
| CN102118801A (en) * | 2011-03-31 | 2011-07-06 | 电信科学技术研究院 | Method and device for unlink transmission in multicarrier aggregation system |
| CN102123516A (en) * | 2011-03-31 | 2011-07-13 | 电信科学技术研究院 | Random access method and equipment based on multiple uplink timing advances |
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