CN102938938A - Random access method and device - Google Patents
Random access method and device Download PDFInfo
- Publication number
- CN102938938A CN102938938A CN2011102332648A CN201110233264A CN102938938A CN 102938938 A CN102938938 A CN 102938938A CN 2011102332648 A CN2011102332648 A CN 2011102332648A CN 201110233264 A CN201110233264 A CN 201110233264A CN 102938938 A CN102938938 A CN 102938938A
- Authority
- CN
- China
- Prior art keywords
- random access
- physical random
- access channel
- base station
- subframe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 82
- 230000004044 response Effects 0.000 claims abstract description 95
- 230000005540 biological transmission Effects 0.000 claims description 17
- 238000012546 transfer Methods 0.000 description 16
- 230000008569 process Effects 0.000 description 7
- 230000011664 signaling Effects 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 238000010295 mobile communication Methods 0.000 description 3
- 230000001174 ascending effect Effects 0.000 description 2
- 230000004069 differentiation Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 101150039363 SIB2 gene Proteins 0.000 description 1
- 238000013475 authorization Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/08—Non-scheduled access, e.g. ALOHA
- H04W74/0833—Random access procedures, e.g. with 4-step access
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses a random access method and device. The random access method comprises the steps that user equipment (UE) acquires information sent by a base station and used for indicating a predetermined physical random access channel, wherein random access responses corresponding to a random access sequence and borne on the predetermined physical random access channel are sent on a protected subframe; and the UE performs random access on the predetermined physical random access channel indicated by the information. By means of the random access method and device, random access efficiency is improved.
Description
Technical field
The present invention relates to the communications field, in particular to accidental access method and device.
Background technology
In radio honeycomb communication system, base station is the equipment of wireless access that provides for subscriber equipment (User Equipment, referred to as being UE), and a base station may comprise one or more Serving cells.Community can provide communication service for the UE of certain geographic range, may there be different coverages different communities, usually can community be divided into to macrocell (macro cell) according to the coverage of community and the purpose of deployment, Microcell (pico cell), picocell (femto cell), correspondingly, provide the base station of these communities to can be described as again macro base station, micro-base station, Home eNodeB (femto base station).
Can also there be different access module (access mode) community: a common common community can provide access service for any user, and this community is called open community; And for the demand that needs to limit the user who allows access under the applied environments such as family or enterprise, closed user group (Closed Subscriber Group, be abbreviated as a CSG) community or be called user's (being the member) access that enclosed type (Closed) community can only allow regulation; Perhaps a mixed type (hybrid) community, when being preferably the Member Users access is provided, also can provide access service for non-Member Users.Usually although, enclosed type community or mixed type community are characteristic features of Home eNodeB, for example, the base station of other type (macro base station) also possible configuration enclosed type or mixed type community in some cases.
A Radio Access Network may comprise polytype community, i.e. macrocell, and Microcell, picocell, such Radio Access Network can be called heterogeneous network (Heterogeneous network, referred to as being Hetnet).When dissimilar community is disposed with frequency, may there be larger interference in the fringe region that the juncture area of Zai Liangge community covers in other words.In order to solve the interference problem between neighbor cell, correlation technique has proposed to be almost gap frame (Almost Blank Subframe, referred to as ABS) technology.Specifically, the community that neighbor cell produce to disturb is configured to the ABS subframe by predetermined descending sub frame, in the ABS subframe, produces that downlink transfer will be reduced in the community of disturbing or with lower power downlink transfer.
In addition, neighbor cell produces the community of disturbing predetermined descending sub frame is configured to multimedia broadcast-multicast service Single Frequency Network (Multimedia Broadcast multicast service Single Frequency Network subframe, referred to as MBSFN) subframe, produce the community of disturbing and will only send the descending control area of 2 to 3 symbols, and do not carry out downlink transfer in remaining symbol).
Like this; by above-mentioned two kinds of modes; on the ABS subframe with too drastic community (or MBSFN subframe) is injured the corresponding subframe (can be described as shielded subframe) of community accordingly; the downlink transfer of community of being injured just can not be subject to very large interference, can protect the downlink transfer of community on these subframes of being injured.
But, in mobile communication system, the ascending resource that UE carries out random access is corresponding with downlink resource, because the UE of the overlay area in community or fringe region is restricted for the downlink resource of transmission, corresponding being restricted of resource of random access carried out in this community so, and if UE accesses or do not know the restriction of random access resource at random not according to the random access resource of restriction, cause the random access of user overtime or failed.
Summary of the invention
Main purpose of the present invention is to provide accidental access method and device, at least to address the above problem.
According to an aspect of the present invention; a kind of accidental access method is provided; comprise: user equipment (UE) obtains the information that is used to indicate predetermined Physical Random Access Channel that base station sends; wherein, accidental access response corresponding to random access sequence carried on described predetermined Physical Random Access Channel sent on shielded subframe.
Preferably, carrying out random access on the described UE Physical Random Access Channel indicating predetermined in described information comprises: described UE sends random access sequence on the predetermined Physical Random Access Channel of described indication; Described UE receives the accidental access response that described base station is responded described random access sequence.
Preferably, described shielded subframe comprises: with neighbor cell be almost subframe that gap frame ABS is corresponding or the subframe corresponding with the MBSFN subframe of neighbor cell.
Preferably, described predetermined Physical Random Access Channel is a subset of the Physical Random Access Channel set that can use of system.
Preferably, the indication information of described predetermined Physical Random Access Channel and the described predetermined Physical Random Access Channel of indication information joint instructions of the Physical Random Access Channel that system can be used, wherein, described system can with the indication information of Physical Random Access Channel be used to indicate the Physical Random Access Channel set that described system can be used.
Preferably, the described random access sequence sent on predetermined Physical Random Access Channel is different from the random access sequence sent on the Physical Random Access Channel that can use in described system.
In accordance with a further aspect of the present invention, a kind of accidental access method is provided, comprise: predetermined Physical Random Access Channel is determined in base station, and wherein, accidental access response corresponding to random access sequence carried on described predetermined Physical Random Access Channel sent on shielded subframe; Described base station sends to UE by the information of described predetermined Physical Random Access Channel.
Preferably, after described base station sends to user equipment (UE) by the information of described predetermined Physical Random Access Channel, also comprise: described base station receives the random access sequence that described UE sends on described predetermined Physical Random Access Channel; Described base station sends the accidental access response corresponding to described random access sequence on described shielded subframe.
Preferably, described shielded subframe comprises: with neighbor cell be almost subframe that gap frame (ABS) is corresponding or the subframe corresponding with the MBSFN subframe of neighbor cell.
Preferably, described base station one of in the following manner or its combination in any the information of described predetermined Physical Random Access Channel is sent to described UE: system message, radio resource control RRC connect reallocation message, Downlink Control Information.
Preferably, described RRC connects reallocation message by the serving BS transparent transmission of described UE.
Preferably, described base station comprises: macro base station, micro-base station or Home eNodeB.
According to a further aspect in the invention, a kind of accidental access device is provided, be applied to UE, comprise: acquisition module, the information that is used to indicate predetermined Physical Random Access Channel sent for obtaining base station, wherein, accidental access response corresponding to random access sequence carried on described predetermined Physical Random Access Channel sent on shielded subframe; Random access module, for accessing at random on the Physical Random Access Channel indicating predetermined in described information.
Preferably, described random access module comprises: the first sending module sends random access sequence for the predetermined Physical Random Access Channel in described indication; The first receiver module, the accidental access response described random access sequence responded for receiving described base station.
According to another aspect of the invention, a kind of accidental access device is provided, be applied to base station, comprise: the second determination module, for determining predetermined Physical Random Access Channel, wherein, accidental access response corresponding to random access sequence carried on described predetermined Physical Random Access Channel sent on shielded subframe; The second sending module, send to UE for the information by described predetermined Physical Random Access Channel.
Preferably, said apparatus also comprises: the second receiver module, on described predetermined Physical Random Access Channel, receiving the random access sequence that described UE sends; The 3rd sending module, for sending the accidental access response corresponding to described random access sequence on described shielded subframe.
By the present invention, adopt UE to obtain the information that is used to indicate predetermined Physical Random Access Channel that base station sends, wherein, the accidental access response that the random access sequence carried on predetermined Physical Random Access Channel is corresponding is sent on shielded subframe, then, on the UE Physical Random Access Channel indicating predetermined in this information, access at random, when making UE carry out corresponding being restricted of resource of random access, Physical Random Access Channel that can be indicating predetermined according to base station (being restricted Physical Random Access Channel) accesses at random, the accidental access response that such UE random access sequence is corresponding sends on shielded subframe, solve UE in the correlation technique and accessed overtime or failed problem because the limited user of causing of random access resource is random, improved the probability of random access.
The accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, forms the application's a part, and schematic description and description of the present invention the present invention does not form inappropriate limitation of the present invention for explaining.In the accompanying drawings:
Fig. 1 is the covering schematic diagram according to the heterogeneous network of correlation technique;
Fig. 2 is the first pass figure according to the accidental access method of the embodiment of the present invention;
Fig. 3 is the second flow chart according to the accidental access method of the embodiment of the present invention;
Fig. 4 is the first structured flowchart according to the accidental access device of the embodiment of the present invention;
Fig. 5 is preferred the first structured flowchart according to the accidental access device of the embodiment of the present invention;
Fig. 6 is the second structured flowchart according to the accidental access device of the embodiment of the present invention;
Fig. 7 is preferred the second structured flowchart according to the accidental access device of the embodiment of the present invention;
Fig. 8 is the first pass figure of accidental access method according to the preferred embodiment of the invention;
Fig. 9 is the second flow chart of accidental access method according to the preferred embodiment of the invention; And
Figure 10 is the 3rd flow chart of accidental access method according to the preferred embodiment of the invention.
Embodiment
Hereinafter with reference to accompanying drawing, also describe the present invention in detail in conjunction with the embodiments.It should be noted that, in the situation that do not conflict, embodiment and the feature in embodiment in the application can combine mutually.
The present embodiment provides a kind of accidental access method, and Fig. 2 is the first pass figure according to the accidental access method of the embodiment of the present invention, and as shown in Figure 2, this flow process comprises that following step S202 is to step S204.
Step S202:UE obtains the information that is used to indicate predetermined Physical Random Access Channel that base station sends, and wherein, the accidental access response that the random access sequence carried on predetermined Physical Random Access Channel is corresponding is sent on shielded subframe.
On the step S204:UE Physical Random Access Channel indicating predetermined in this information, access at random.
Pass through above-mentioned steps, UE obtains the information that is used to indicate predetermined Physical Random Access Channel that base station sends, wherein, the accidental access response that the random access sequence carried on predetermined Physical Random Access Channel is corresponding is sent on shielded subframe, then, on the UE Physical Random Access Channel indicating predetermined in this information, access at random, when making UE carry out corresponding being restricted of resource of random access, Physical Random Access Channel that can be indicating predetermined according to base station (being restricted Physical Random Access Channel) accesses at random, the accidental access response that such UE random access sequence is corresponding sends on shielded subframe, overcome UE in the correlation technique and accessed overtime or failed problem because the limited user of causing of random access resource is random, improved the probability of random access.
As an execution mode preferably, UE can realize that random access: UE sends random access sequence on the predetermined Physical Random Access Channel of indication in the following manner; UE receives the accidental access response that base station is responded random access sequence.Like this, UE and base station have completed the Signalling exchange of random access, have improved the reliability of random access.
As another execution mode preferably, it is one of following that the shielded subframe in step S202 comprises: with neighbor cell be almost subframe that gap frame ABS is corresponding or the subframe corresponding with the MBSFN subframe of neighbor cell.For example: shielded subframe is set to the corresponding subframe into ABS, in correlation technique, to reduce downlink transfer in the ABS subframe or with lower power downlink transfer, the interference that is subject to ABS subframe transmission channel corresponding to the subframe of ABS like this will reduce greatly, thereby has improved the accuracy of transmission; In the application of MBSFN subframe, produce the community of disturbing and will only send the descending control area of 2 to 3 symbols, and do not carry out downlink transfer in remaining symbol.Like this, greatly reducing with the interference be subject to of being injured accordingly on the corresponding subframe (shielded subframe) of community of MBSFN subframe, thereby improving the accuracy of transmission.
Preferably, this predetermined Physical Random Access Channel is a subset of the Physical Random Access Channel set that can use of system.
When implementing, can in several ways the Physical Random Access Channel for carrying this UE be indicated to UE, can indicate by mode directly or indirectly.By direct mode, indicated: for example, directly by the resource location of this Physical Random Access Channel notice UE, the amount of information that this mode signaling transmits can be larger.By mode indirectly, indicated: for example: the predetermined Physical Random Access Channel of indication information joint instructions of the Physical Random Access Channel that can use by indication information and the system of predetermined Physical Random Access Channel, wherein, this system can with the indication information of Physical Random Access Channel be used to indicate the Physical Random Access Channel set that system can be used, ratio preferably, can only transmit the Physical Random Access Channel that carries out random access for carrying UE gets final product at the index value of all Random Access Channel, the amount of information that makes this mode signaling transmit is smaller.
Preferably, on the Physical Random Access Channel that the random access code sent on this predetermined Physical Random Access Channel can be used from system, send random access code different.In random access procedure, the random access code that each user carries out random access is not identical, the random access code sent on predetermined Physical Random Access Channel by this and system can with Physical Random Access Channel on send random access code distinguished, indirectly realize user's differentiation, made base station receive the Random Access Channel that random access code just can judge this UE and use (being whether the Physical Random Access Channel that predetermined Random Access Channel or system can be used) by judgement.
The present embodiment provides a kind of accidental access method, and Fig. 3 is the first pass figure according to the accidental access method of the embodiment of the present invention, and as shown in Figure 3, this flow process comprises following step S302 and step S304.
Step S302: determine predetermined Physical Random Access Channel, wherein, the accidental access response that the random access sequence carried on predetermined Physical Random Access Channel is corresponding is sent on shielded subframe.
Step S304: base station sends to UE by the information of predetermined Physical Random Access Channel.
Pass through above-mentioned steps, predetermined Physical Random Access Channel is determined in base station, wherein, the accidental access response that the random access sequence carried on predetermined Physical Random Access Channel is corresponding is sent on shielded subframe, base station sends to UE by the information of predetermined Physical Random Access Channel, when making UE carry out corresponding being restricted of resource of random access, Physical Random Access Channel that can be indicating predetermined according to base station (being restricted Physical Random Access Channel) accesses at random, the accidental access response that such UE random access sequence is corresponding sends on shielded subframe, overcome UE in the correlation technique and accessed overtime or failed problem because the limited user of causing of random access resource is random, improved the probability of random access.
As an execution mode preferably, after step S304, also comprise: base station receives the random access sequence that UE sends on predetermined Physical Random Access Channel; Base station sends the accidental access response corresponding to random access sequence on shielded subframe.In correlation technique, in correlation technique, employing will be scheduled to descending sub frame and be configured to be almost gap frame (Almost Blank Subframe, referred to as ABS), descending received power on the subframe corresponding at ABS of the community be interfered like this is relatively good, this preferred implementation sends accidental access response on such subframe, reduce the interference of base station transmission accidental access response, correspondingly improved the accuracy rate of UE receiving random access response.
As another execution mode preferably, it is one of following that the shielded subframe in step S302 comprises: with neighbor cell be almost subframe that gap frame ABS is corresponding or the subframe corresponding with the MBSFN subframe of neighbor cell.For example: shielded subframe is set to the subframe that ABS is corresponding, in correlation technique, to reduce downlink transfer in the ABS subframe or with lower power downlink transfer, the interference that is subject to ABS subframe transmission channel corresponding to the subframe of ABS like this will reduce greatly, thereby has improved the accuracy of transmission; Due in the MBSFN application, produce the community of disturbing and will only send the descending control area of 2 to 3 symbols, and do not carry out downlink transfer in remaining symbol).Like this, greatly reducing with the interference be subject to of being injured accordingly on the corresponding subframe (shielded subframe) of community of MBSFN subframe, thereby improving the accuracy of transmission.
Preferably, base station one of in the following manner or its combination in any the information of Physical Random Access Channel is sent to UE: system message, Radio Resource are controlled (RRC) and are connected reallocation message, descending control message.Corresponding to UE, in different states, or, according to the needs of system, base station can adopt above-mentioned various ways to send this information to UE, and for example: UE, in the time of Idle state, can pass through system message, for example broadcast mode; UE is in the time of connected state, and base station can connect reallocation message by system message or RRC.Preferably, RRC connects reallocation message by the serving BS transparent transmission of UE to ratio.
Preferably, base station comprises: macro base station, micro-base station or Home eNodeB.For the macro base station in heterogeneous network, micro-base station or Home eNodeB, can adopt above-mentioned accidental access method to be accessed, improve the scope of application of the method.
In another embodiment, two kinds of random access softwares are also provided, the technical scheme that this software is described for carrying out above-described embodiment and preferred embodiment.
In another embodiment, also provide a kind of storage medium, stored above-mentioned random access software in this storage medium, this storage medium includes but not limited to: CD, floppy disk, hard disk, scratch pad memory etc.
The embodiment of the present invention also provides two kinds of accidental access devices, this accidental access device can be for realizing above-mentioned accidental access method and preferred implementation, carried out explanation, repeated no more, below the module related in this accidental access device had been described.As used below, the combination of software and/or the hardware of predetermined function can be realized in term " module ".Although the described system and method for following examples is preferably realized with software, hardware, or the realization of the combination of software and hardware also may and be conceived.
Fig. 4 is the first structured flowchart according to the accidental access device of the embodiment of the present invention, and this device can be applied to UE, and as shown in Figure 4, this device comprises: acquisition module 42 and random access module 44 below are described in detail said structure:
Acquisition module 42, the information that is used to indicate predetermined Physical Random Access Channel sent for obtaining base station, wherein, the accidental access response that the random access sequence carried on predetermined Physical Random Access Channel is corresponding is sent on shielded subframe; Random access module 44, be connected to acquisition module 42, on the predetermined Physical Random Access Channel of indicating for the information got at acquisition module 42, accesses at random.
Fig. 5 is preferred the first structured flowchart according to the accidental access device of the embodiment of the present invention, and as shown in Figure 5, random access module 44 comprises: the first sending module 442, the first receiver module 444 below are described in detail said structure:
The first sending module 442, send random access sequence for the predetermined Physical Random Access Channel in indication; The first receiver module 444, be connected to the first sending module 442, the accidental access response responded for receiving random accessing message that base station sends the first sending module 442.
Fig. 6 is the second structured flowchart according to the accidental access device of the embodiment of the present invention, and this device can be applied to base station, and this device comprises: determination module 62 and the second sending module 64 below are described in detail said structure:
Determination module 62, for determining predetermined Physical Random Access Channel, wherein, the accidental access response that the random access sequence carried on predetermined Physical Random Access Channel is corresponding is sent on shielded subframe; The second sending module 64, be connected to the second determination module 62, for the information of predetermined Physical Random Access Channel that the second determination module 62 is determined, sends to UE.
Fig. 7 is preferred the second structured flowchart according to the accidental access device of the embodiment of the present invention, and as shown in Figure 7, this device also comprises: the second receiver module 72 and the 3rd sending module 74 below are described in detail said structure:
The second receiver module 72, for receiving the random access sequence that UE sends on predetermined Physical Random Access Channel;
The 3rd sending module 74, be connected to the second determination module 72, for send the accidental access response of the random access sequence received corresponding to the second receiver module on shielded subframe.
Below in conjunction with preferred embodiment, describe, following preferred embodiment combines above-described embodiment and preferred implementation.
Following examples are based on that the framework of Fig. 1 describes.In Fig. 1, heterogeneous network comprises polytype community, macrocell for example, Microcell, picocell, while disposing with frequency in dissimilar community, may there be larger interference in the juncture area of Zai Liangge community or the fringe region of covering, for the De Liangge community occurs to disturb, it is too drastic community (aggressor cell) that neighbor cell is produced to the community of disturbing, the overlapping region of dissimilar community or fringe region or be subject to larger interference in heterogeneous network, these communities can be called to the community that is injured (Victim UE), UE in the community that is injured is called to the UE that is injured (Victim UE).For example: under the scene coexisted at macro-femto, if UE in CSG Femto cell coverage area and can not access this CSG community, this macro UE (MUE) is subject to the strong jamming of femto, is Victim UE; Perhaps, under the macro-femto scene, if a UE increases in (coverage range extension, be abbreviated as CRE) scope in the coverage of pico, the strong jamming ，Gai community that this pico UE (PUE) is subject to macro is the Victim community.Can adopt too drastic community will be scheduled to descending sub frame and be configured to be almost gap frame (Almost Blank Subframe, referred to as ABS), in the ABS subframe, downlink transfer will be reduced or with lower power downlink transfer in too drastic community.
In addition, neighbor cell produces the community of disturbing predetermined descending sub frame is configured to multimedia broadcast-multicast service Single Frequency Network (Multimedia Broadcast multicast service Single Frequency Network subframe, referred to as MBSFN) subframe, produce the community of disturbing and will only send the descending control area of 2 to 3 symbols, and do not carry out downlink transfer in remaining symbol).
Like this; by above-mentioned two kinds of modes; on the ABS subframe with too drastic community (or MBSFN subframe) is injured the corresponding subframe (can be described as shielded subframe) of community accordingly; the downlink transfer of community of being injured just can not be subject to very large interference, can protect the downlink transfer of community on these subframes of being injured.
But, in mobile communication system, the ascending resource that UE carries out random access is corresponding with downlink resource, and owing to being injured, the downlink resource of community for transmission is restricted, corresponding being restricted of resource of random access carried out in the community that is injured so, causes the random access of user overtime or failed.In following examples, the reception base station, community that is injured sends the physical accidental access signal message that can use the community that is injured, accesses at random.
In addition, UE is linked into Serving cell by random access procedure, and in random access procedure, UE sends random access code to selected community, and random access code sends on specific Physical Random Access Channel.The Physical Random Access Channel of base station possible configuration different densities, different Physical Random Access Channels can be distinguished by different running time-frequency resources, specifically, the Physical Random Access Channel that the FDD system is different is distinguished by different subframe (being the time resource), and the Physical Random Access Channel that the TDD system is different is distinguished jointly by running time-frequency resource.After base station receives random access code on Physical Random Access Channel, can in the accidental access response window, to UE, send accidental access response, this accidental access response is to dispatch by the Downlink Control Information (DCI) on the public search space of down control channel (PDCCH) (common search space).The public search space of each subframe can only hold at most 4 Downlink Control Information; and (one or more) random access code that each accidental access response correspondence receives on a Physical Random Access Channel in random access, the random access code that therefore response receives on 4 Physical Random Access Channels at most in 1 shielded subframe.In fact, because public search space also needs the Downlink Control Information of carrying for dispatching patcher message and beep-page message, therefore, the Physical Random Access Channel number that can respond on 1 shielded subframe may be n (n<=4).And if the density of the Physical Random Access Channel of base station configuration is excessive; for example be greater than 4/10 (being, in every 10 subframes, 4 Physical Random Access Channels are arranged); after causing UE to send random access code, base station possibly can't send correspondingly accidental access response in shielded subframe; cause correctly receiving random access response and cause access failure of UE; in following examples, base station sends accidental access response on shielded subframe.
Preferred embodiment one
The present embodiment provides a kind of accidental access method, and this accidental access method comprises the steps: that the present invention proposes a kind of accidental access method, and its feature comprises:
Step S2:Victim UE receives the Physical Random Access Channel information that can use Victim UE that base station sends;
Step S4:Victim UE is used the Physical Random Access Channel of this information indication to send random access code.
As an execution mode preferably; after step S4; this base station sends for dispatching the Downlink Control Information of accidental access response on shielded subframe; this mode sends Downlink Control Information on shielded subframe; make the signal of transmission avoid the interference of too drastic community in this subframe, guaranteed the reception accuracy rate of Downlink Control Information.
Preferably, what this base station sent is for dispatching the Downlink Control Information of accidental access response, so the protected subframe of carrying this Downlink Control Information is in the accidental access response window.Guaranteed the received accuracy rate of accidental access response.
As another execution mode preferably, this further, base station sends accidental access response on shielded subframe; , this mode sends accidental access response on shielded subframe, makes the accidental access response of transmission avoid the interference of too drastic community in this subframe, has guaranteed the received accuracy rate of accidental access response.
When implementing, step S2 can adopt following various ways to realize that this Victim UE receives the method for the Physical Random Access Channel information that can use Victim UE of base station transmission, and for example: this Victim UE reception base station connects reallocation message by system message and/or RRC and/or Downlink Control Information sends the Physical Random Access Channel information that this Victim UE can use.
Preferably, this RRC connects reallocation message by the transparent transmission of serving BS of Victim UE;
As another execution mode preferably, non-Victim UE (UE in mobile communication system except Victim UE) receives the Physical Random Access Channel information that can use all UE that base station sends, this mode has guaranteed that other UE except Victim UE are accessed by mode of the prior art, reduce the change to the random access of existing system, improved system compatibility.
Preferably, the indicated Physical Random Access Channel of the Physical Random Access Channel information that non-Victim UE is used this can use all UE sends random access code; Perhaps, non-Victim UE for the Physical Random Access Channel that sends random access code be all UE can with Physical Random Access Channel and be not the Physical Random Access Channel that Victim UE can use;
As another execution mode preferably, this Victim UE can with Physical Random Access Channel be a subset of the Physical Random Access Channel that can use of all UE, preferably, this Victim UE can with Physical Random Access Channel information indication Victim UE can with physical accidental access signal be a subset of the Physical Random Access Channel that can use of all UE; As a kind of mode of saving signaling traffic load, ratio preferably, this Victim UE can with Physical Random Access Channel information comprise Physical Random Access Channel information and the indication information that all UE can use, the Physical Random Access Channel that Physical Random Access Channel information consolidation that this indication information and all UE can use indication Victim UE can use.
As another execution mode preferably, Victim UE receives the random access code information that Victim UE that base station sends can use, and the Physical Random Access Channel that this Victim UE is used this Victim UE to use sends the random access code that this Victim UE can use; This Physical Random Access Channel information has been indicated the shared time domain of one or more Physical Random Access Channels and/or frequency domain resource.
It should be noted that, the base station in this embodiment can comprise micro-base station and macro base station.This mode has enlarged the scope of application of this Random Access.
Preferred embodiment two
The present embodiment provides a kind of accidental access method, and Fig. 8 is the first pass figure of accidental access method according to the preferred embodiment of the invention, and as shown in Figure 8, the flow process of the method comprises following step:
Step S802:Victim UE receives the Physical Random Access Channel information that can use Victim UE that base station sends.
Step S804:Victim UE is used the Physical Random Access Channel of the indication of this information to send random access code.
Preferred embodiment three
The present embodiment provides a kind of accidental access method, and Fig. 9 is the second flow chart of accidental access method according to the preferred embodiment of the invention, and as shown in Figure 9, the flow process of the method comprises:
Step S902:Victim UE receives the Physical Random Access Channel information that can use Victim UE that base station sends;
Step S904:Victim UE is used the Physical Random Access Channel of described information indication to send random access code;
Step S906: base station sends for dispatching the Downlink Control Information of accidental access response on shielded subframe;
Step S908: base station sends accidental access response on shielded subframe;
Step S910:UE sends message 3 to base station;
Based on this, the present invention proposes a kind of accidental access method, so that base station can send the accidental access response of Victim UE on shielded subframe, thereby reduce access delay and probability of failure.
Preferred embodiment four
The present embodiment provides a kind of accidental access method, and the method for the present embodiment comprises following flow process:
Step S20: the measurement that the UE in Idle or connected state may be based on self and oneself be a Victim UE from the broadcast message judgement of base station.
For example: Victim UE receives by system broadcast message the Physical Random Access Channel information that can use Victim UE that base station sends.Concrete, the Physical Random Access Channel information that Victim UE can use can be carried alternatively in SIB2 (SystemlnformationBlock2), and this information has been indicated the one or more Physical Random Access Channels that can use Victim UE.
Preferably, this information can independently be indicated the one or more Physical Random Access Channels that can use Victim UE, indicates the one or more Physical Random Access Channels that can use Victim UE together with the Physical Random Access Channel information that also can use with all or common UE.For example, during independent indication, this information can be the index of the Physical Random Access Channel configuration that can use of Victim UE, the configuration of the corresponding a set of Physical Random Access Channel of each index.UE can know the Physical Random Access Channel that the Victim UE of base station configuration can use by allocation list after receiving some index values.During joint instructions; a subset of the Physical Random Access Channel that this information can indicate all UE to use; (whether Victim UE can use Physical Random Access Channel arbitrarily in other words perhaps to indicate whether can to use the Physical Random Access Channel that can use all UE by Victim UE; whether Victim UE is used Physical Random Access Channel to be restricted in other words), or whether indication opens Physical Random Access Channel restriction scheme or the accidental access response protection mechanism of Victim UE indirectly.In addition, the random access sequence (collection) that base station also indicates Victim UE to use alternatively.
Step S40:Victim UE by receive that base station sends to Victim UE can with Physical Random Access Channel information know one or more its own available Physical Random Access Channel, when a plurality of available Physical Random Access Channel is arranged, UE selects one of them Physical Random Access Channel to send random access code.If the random access sequence collection that base station has indicated Victim UE to use, need send at UE the random access sequence that belongs to this set.Base station Victim UE can with Physical Random Access Channel on receive random access code after (may or the random access code that can use of Victim UE) send for dispatching the Downlink Control Information (DCI) of accidental access response shielded subframe (this subframe is in the accidental access response window) is upper, the RA-RNTI that this DCI is used the running time-frequency resource according to Physical Random Access Channel to calculate carries out the CRC scrambling.Base station can send accidental access response in the lump on shielded subframe.Accidental access response is included in MAC PDU, and base station can be included in a MAC PDU for the accidental access response of a plurality of random access codes of receiving on same Physical Random Access Channel.
The public search space of the RA-RNTI trial solution descending sub frame that step S60:Victim UE is used the running time-frequency resource of the Physical Random Access Channel of oneself selecting according to it to calculate in the accidental access response window.If understand successfully, UE reads the schedule information in DCI, and receives according to schedule information the MAC PDU that comprises 0 to n accidental access response.If base station is the Downlink Control Information transmitted on shielded subframe, Victim UE receives the Downlink Control Information corresponding with the RA-RNTI of its calculating on shielded subframe; If accidental access response has been transmitted in base station on shielded subframe, Victim UE also receives the MAC PDU that comprises accordingly 0 to n accidental access response on shielded subframe.UE by the index of the random access code of the RAPID in this PDU head and its use (being random access sequence) relatively, if there is RAPID identical with the index of the random access code of its use, UE reads corresponding accidental access response, and continue to carry out subsequent operation according to accidental access response, for example according to uplink authorization (UL-GRANT), to base station, send message 3 (message3).
In order to realize system compatible, preferably, for example, for Iegacy UE (R8/R9/10UE), these UE are used the general Physical Random Access Channel that all UE can use in other words to send random access code.If the Physical Random Access Channel that Iegacy UE selects is just in time the Physical Random Access Channel that Victim UE can use, in the situation that the proprietary random access code of Victim UE is not indicated in base station, the random access code that competition can't be distinguished in base station is that Victim UE or Iegacy UE send out, and therefore the accidental access response for these Iegacy UE also adopts the transmission method the same with Victim UE.In fact, the accidental access response of Iegacy UE and Victim UE can be included in a MAC PDU, and is dispatched by a DCI.Like this, base station also sends the DCI corresponding with the RA-RNTI of these Iegacy UE in shielded subframe, can also in shielded subframe, send the RAR of Iegacy UE.If the Physical Random Access Channel that Iegacy UE selects is not the Physical Random Access Channel that Victim UE can use, base station does not need to adopt shielded subframe to send DCI and/or RAR.
In order to realize system compatible, preferably, for non Victim UE (R11 or later version), these UE can continue to use the accidental access method of Iegacy UE; Perhaps adopt in the following method.The Physical Random Access Channel that non-Victim UE is used be all UE can with Physical Random Access Channel and be not the Physical Random Access Channel that Victim UE can use, in other words, Victim UE and non-Victim UE are used different Physical Random Access Channels, and different Physical Random Access Channels also can be distinguished Victim and non-Victim UE.In addition, the random access sequence that base station can also further require non-Victim UE to use is different with the random access sequence that Victim UE is used, and the different random access sequence that Victim UE and non-Victim UE also can be used by them is distinguished.Like this, Physical Random Access Channel (its running time-frequency resource in other words) and/or random access code differentiation Victim UE and non-Victim UE can be passed through in base station.Like this, base station can send in shielded subframe accidental access response and the DCI thereof of Victim UE; Send to accidental access response and the DCI thereof of non-Victim UE in other subframe or suitable subframe (suitable can the decision according to time delay and scheduling).
Preferred embodiment five
The present embodiment provides a kind of accidental access method, in the present embodiment, base station can allow UE initiate random access procedure by PDCCH order (order), and in this case, random access procedure is initiated with specific DCI form (DCI format 1A) notice UE in base station.The method comprises following flow process:
Step S100: the UE in connected state receives the specific DCI that base station sends, and this DCI requires UE to carry out random access procedure and indication UE initiates Physical Random Access Channel and the random access sequence that random access should be used.For Victim UE, it is the physical accidental access access channel that Victim UE can use that indication UE in base station initiates the Physical Random Access Channel that random access should be used.That is to say the Physical Random Access Channel that base station can be used Victim UE by Downlink Control Information (independence) indication.UE is used Physical Random Access Channel to send the random access code of appointment.Base station sends for dispatching the Downlink Control Information (DCI) of accidental access response shielded subframe (this subframe is in the accidental access response window) is upper receive random access code on the Physical Random Access Channel of indication after, and the RA-RNTI that this DCI is used the running time-frequency resource according to Physical Random Access Channel to calculate carries out the CRC scrambling.Base station can send accidental access response in the lump on shielded subframe.Accidental access response is included in MAC PDU, and base station can be included in a MAC PDU for the accidental access response of a plurality of random access codes of receiving on same Physical Random Access Channel.
The public search space of the RA-RNTI trial solution descending sub frame that step S300:Victim UE is used the running time-frequency resource according to Physical Random Access Channel to calculate in the accidental access response window, if understand successfully, UE reads the schedule information in DCI, and receives according to schedule information the MAC PDU that comprises 0 to n accidental access response.If base station is the Downlink Control Information transmitted on shielded subframe, Victim UE receives the Downlink Control Information corresponding with the RA-RNTI of its calculating on shielded subframe; If accidental access response has been transmitted in base station on shielded subframe, Victim UE also receives the MAC PDU that comprises accordingly 0 to n accidental access response on shielded subframe.UE by the index of the random access code of the RAPID in this PDU head and its use (being random access sequence) relatively, if there is RAPID identical with the index of the random access code of its use, UE reads corresponding accidental access response, and continues to carry out subsequent operation according to accidental access response.
Preferred embodiment six
The present embodiment provides a kind of accidental access method, and Figure 10 is the 3rd flow chart of accidental access method according to the preferred embodiment of the invention, and as shown in figure 10, the method comprises:
Step S1002: target BS sends switching command message to source base station.
Step S1004: source base station sends RRC to UE and connects reallocation message, wherein carries the Physical Random Access Channel information that Victim UE can use.
Step S1006:Victim UE is used the Physical Random Access Channel of above-mentioned information indication to send random access code to target BS.
Step S1008: target BS sends for dispatching the Downlink Control Information of accidental access response on shielded subframe.
Step S1010: target BS sends accidental access response on shielded subframe.
Step S1012:UE sends RRC connection reprovision to target BS and completes message.
Preferred embodiment seven
The present embodiment provides a kind of accidental access method, and the method comprises following flow process:
Step S1102: in handoff procedure, source base station and target BS may carry out switching preparation process by X2 or S1 interface, if prepare successfully, target BS sends switching command message to source base station, and this message may be transparent is carried on (S1 message also forwards by MME) in X2 or S1 message.Switching command message comprises a complete DL-DCCH message (this DL-DCCH message is issued UE by source base station), connect reallocation message comprising RRC, this message comprises the Physical Random Access Channel information (this information can be placed in RACH-ConfigDedicated IE) that Victim UE can use.UE is used the Physical Random Access Channel of indication to send the random access code of appointment to target BS.
Step 1104: target BS sends for dispatching the Downlink Control Information (DCI) of accidental access response shielded subframe (this subframe is in the accidental access response window) is upper receive random access code on the Physical Random Access Channel of indication after, and the RA-RNTI that this DCI is used the running time-frequency resource according to Physical Random Access Channel to calculate carries out the CRC scrambling.Target BS can send accidental access response in the lump on shielded subframe.Accidental access response is included in MAC PDU, and target BS can be included in a MAC PDU for the accidental access response of a plurality of random access codes of receiving on same Physical Random Access Channel.
The public search space of the RA-RNTI trial solution descending sub frame that step S1106:Victim UE is used the running time-frequency resource according to Physical Random Access Channel to calculate in the accidental access response window, if understand successfully, UE reads the schedule information in DCI, and receives according to schedule information the MAC PDU that comprises 0 to n accidental access response.If target BS is the Downlink Control Information transmitted on shielded subframe, Victim UE receives the Downlink Control Information corresponding with the RA-RNTI of its calculating on shielded subframe; If target BS has transmitted accidental access response on shielded subframe, Victim UE also receives the MAC PDU that comprises accordingly 0 to n accidental access response on shielded subframe.UE by the index of the random access code of the RAPID in this PDU head and its use (being random access sequence) relatively, if there is RAPID identical with the index of the random access code of its use, UE reads corresponding accidental access response, and continue to carry out subsequent operation according to accidental access response, comprise that sending RRC connection reprovision completes message to target BS.
Pass through above-described embodiment, a kind of accidental access method and device are provided, obtain by UE the information that is used to indicate predetermined Physical Random Access Channel that base station sends, wherein, the accidental access response that the random access sequence carried on predetermined Physical Random Access Channel is corresponding is sent on shielded subframe, then, on the UE Physical Random Access Channel indicating predetermined in this information, access at random, when making UE carry out corresponding being restricted of resource of random access, the predetermined Physical Random Access Channel (being restricted Physical Random Access Channel) that is used to indicate that can send according to base station accesses at random, the accidental access response that such UE random access sequence is corresponding sends on shielded subframe, overcome UE in the correlation technique and accessed overtime or failed problem because the limited user of causing of random access resource is random, improved the probability of random access.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with general calculation element, they can concentrate on single calculation element, perhaps be distributed on the network that a plurality of calculation elements form, alternatively, they can be realized with the executable program code of calculation element, thereby they can be stored in storage device and be carried out by calculation element, perhaps they are made into respectively to each integrated circuit modules, perhaps a plurality of modules in them or step being made into to the single integrated circuit module realizes.Like this, the present invention is not restricted to any specific hardware and software combination.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (16)
1. an accidental access method, is characterized in that, comprising:
User equipment (UE) obtains the information that is used to indicate predetermined Physical Random Access Channel that base station sends, and wherein, accidental access response corresponding to random access sequence carried on described predetermined Physical Random Access Channel sent on shielded subframe;
On the described UE Physical Random Access Channel indicating predetermined in described information, access at random.
2. method according to claim 1, is characterized in that, carries out random access on the described UE Physical Random Access Channel indicating predetermined in described information and comprise:
Described UE sends random access sequence on the predetermined Physical Random Access Channel of described indication;
Described UE receives the accidental access response that described base station is responded described random access sequence.
3. method according to claim 1 and 2; it is characterized in that, described shielded subframe comprises: with neighbor cell be almost subframe that gap frame ABS is corresponding or the subframe corresponding with the multimedia broadcast-multicast service Single Frequency Network subframe MBSFN subframe of described neighbor cell.
4. according to the described method of any one in claim 1 to 2, it is characterized in that, described predetermined Physical Random Access Channel is a subset of the Physical Random Access Channel set that can use of system.
5. method according to claim 4, it is characterized in that, the indication information of described predetermined Physical Random Access Channel and the described predetermined Physical Random Access Channel of indication information joint instructions of the Physical Random Access Channel that system can be used, wherein, described system can with the indication information of Physical Random Access Channel be used to indicate the Physical Random Access Channel set that described system can be used.
6. method according to claim 1 and 2, is characterized in that, the described random access sequence sent on predetermined Physical Random Access Channel is different from the random access sequence sent on the Physical Random Access Channel that can use in described system.
7. an accidental access method, is characterized in that, comprising:
Predetermined Physical Random Access Channel is determined in base station, and wherein, accidental access response corresponding to random access sequence carried on described predetermined Physical Random Access Channel sent on shielded subframe;
Described base station sends to user equipment (UE) by the information of described predetermined Physical Random Access Channel.
8. method according to claim 7, is characterized in that, after described base station sends to user equipment (UE) by the information of described predetermined Physical Random Access Channel, also comprises:
Described base station receives the random access sequence that described UE sends on described predetermined Physical Random Access Channel;
Described base station sends the accidental access response corresponding to described random access sequence on described shielded subframe.
9. method according to claim 7; it is characterized in that, described shielded subframe comprises: with neighbor cell be almost subframe that gap frame ABS is corresponding or the subframe corresponding with the multimedia broadcast-multicast service Single Frequency Network subframe MBSFN subframe of described neighbor cell.
10. method according to claim 7, is characterized in that, described base station one of in the following manner or its combination in any the information of described predetermined Physical Random Access Channel is sent to described UE:
System message, radio resource control RRC connect reallocation message, Downlink Control Information.
11. method according to claim 10, is characterized in that, described RRC connects reallocation message by the serving BS transparent transmission of described UE.
12. according to the described method of any one in claim 7 to 11, it is characterized in that, described base station comprises: macro base station, micro-base station or Home eNodeB.
13. an accidental access device, be applied to user equipment (UE), it is characterized in that, comprising:
Acquisition module, the information that is used to indicate predetermined Physical Random Access Channel sent for obtaining base station, wherein, accidental access response corresponding to random access sequence carried on described predetermined Physical Random Access Channel sent on shielded subframe;
Random access module, for accessing at random on the Physical Random Access Channel indicating predetermined in described information.
14. device according to claim 13, is characterized in that, described random access module comprises:
The first sending module, send random access sequence for the predetermined Physical Random Access Channel in described indication;
The first receiver module, the accidental access response described random access sequence responded for receiving described base station.
15. an accidental access device, be applied to base station, it is characterized in that, comprising:
Determination module, for determining predetermined Physical Random Access Channel, wherein, accidental access response corresponding to random access sequence carried on described predetermined Physical Random Access Channel sent on shielded subframe;
The second sending module, send to user equipment (UE) for the information by described predetermined Physical Random Access Channel.
16. device according to claim 15, is characterized in that, also comprises:
The second receiver module, for receiving the random access sequence that described UE sends on described predetermined Physical Random Access Channel;
The 3rd sending module, for sending the accidental access response corresponding to described random access sequence on described shielded subframe.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102332648A CN102938938A (en) | 2011-08-15 | 2011-08-15 | Random access method and device |
| PCT/CN2012/073354 WO2012152154A1 (en) | 2011-08-15 | 2012-03-30 | Method and device for random access |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102332648A CN102938938A (en) | 2011-08-15 | 2011-08-15 | Random access method and device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102938938A true CN102938938A (en) | 2013-02-20 |
Family
ID=47138775
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102332648A Pending CN102938938A (en) | 2011-08-15 | 2011-08-15 | Random access method and device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102938938A (en) |
| WO (1) | WO2012152154A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018103092A1 (en) * | 2016-12-09 | 2018-06-14 | Telefonaktiebolaget Lm Ericsson (Publ) | Prach scheduling method, scheduled prach transmission method, network node and user equipment |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104113881B (en) * | 2013-04-16 | 2019-09-17 | 中兴通讯股份有限公司 | A kind of radio resource management method, macro base station and low power nodes |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101841867A (en) * | 2009-03-18 | 2010-09-22 | 大唐移动通信设备有限公司 | Method, system and device for information transmission |
| CN102098739A (en) * | 2011-01-28 | 2011-06-15 | 工业和信息化部电信传输研究所 | Method for increasing utilization ratio of resources, home base station, macro base station and system |
| CN102595533A (en) * | 2011-01-07 | 2012-07-18 | 华为技术有限公司 | Method for scheduling switched terminal, method for switching terminal and base station |
| CN102595631A (en) * | 2011-01-07 | 2012-07-18 | 华为技术有限公司 | Random access method, base station and terminal |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101686544A (en) * | 2008-09-22 | 2010-03-31 | 中兴通讯股份有限公司 | Method for distributing special random access resource and base station |
| US20100110994A1 (en) * | 2008-10-30 | 2010-05-06 | Motorola, Inc. | Method and apparatus for allocating a physical random access channel in an othogonal frequency division multiplexing communication system |
| CN101940053B (en) * | 2009-04-03 | 2013-06-26 | 华为技术有限公司 | Method and apparatus of transmitting preamble signal for random access |
| US8755298B2 (en) * | 2009-07-06 | 2014-06-17 | Lg Electronics Inc. | Method and apparatus for random access in a wireless communication system |
| CN101765215B (en) * | 2010-01-19 | 2012-08-08 | 华为技术有限公司 | Special leader sequence distribution method and device |
-
2011
- 2011-08-15 CN CN2011102332648A patent/CN102938938A/en active Pending
-
2012
- 2012-03-30 WO PCT/CN2012/073354 patent/WO2012152154A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101841867A (en) * | 2009-03-18 | 2010-09-22 | 大唐移动通信设备有限公司 | Method, system and device for information transmission |
| CN102595533A (en) * | 2011-01-07 | 2012-07-18 | 华为技术有限公司 | Method for scheduling switched terminal, method for switching terminal and base station |
| CN102595631A (en) * | 2011-01-07 | 2012-07-18 | 华为技术有限公司 | Random access method, base station and terminal |
| CN102098739A (en) * | 2011-01-28 | 2011-06-15 | 工业和信息化部电信传输研究所 | Method for increasing utilization ratio of resources, home base station, macro base station and system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018103092A1 (en) * | 2016-12-09 | 2018-06-14 | Telefonaktiebolaget Lm Ericsson (Publ) | Prach scheduling method, scheduled prach transmission method, network node and user equipment |
| US11297658B2 (en) | 2016-12-09 | 2022-04-05 | Telefonaktiebolaget Lm Ericsson (Publ) | PRACH scheduling method, scheduled PRACH transmission method, network node and user equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2012152154A1 (en) | 2012-11-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6932806B2 (en) | DC subcarrier processing in narrowband devices | |
| CN102652442B (en) | Method for ue pattern indication and measurement for interference coordination | |
| CN102202400B (en) | Instruction and processing method and device for resource occupancy mode | |
| JP6309692B2 (en) | Techniques for sending and receiving paging messages over unlicensed radio frequency spectrum bands | |
| KR101662084B1 (en) | Apparatus for transmitting a signal using scheduling information in a mobile communication system and method for same | |
| US9137820B2 (en) | Method for transmitting scheduling information in mobile communication system and femtocell base station apparatus using the same | |
| US10051661B2 (en) | Method and apparatus for communicating using unlicensed bands in mobile communication system | |
| US20150029891A1 (en) | Methods for configuring channel state information measurement in a communications system and communications apparatus utilizing the same | |
| JP5796448B2 (en) | Wireless communication apparatus, wireless communication method, and wireless communication system | |
| TWI497958B (en) | Communications apparatus,a method for coordinating transmissions and a method for assigning an abs pattern | |
| CN102550068B (en) | Mobile communication system | |
| CN102104965B (en) | Method and device for coordinating inter-cell interference, and network node | |
| CN108605325A (en) | Communication system | |
| CN110100470A (en) | Communication system | |
| CN105684487A (en) | Communication system | |
| CN105917607A (en) | Indication of cell mode and CSI feedback rules for cell on-off procedure | |
| CN105103645B (en) | For the user equipment of direct-connected communication, base station and direct-connected communication establishing method | |
| CN105453648A (en) | Communication system | |
| CN103733675A (en) | Improving wireless device performance in heterogeneous networks | |
| CN103037530B (en) | A kind of accidental access method and system | |
| CN103369611A (en) | A random access processing method, switch processing method, and apparatus | |
| CN103039028A (en) | Method and arrangement for signaling of parameters in a wireless network | |
| CN104244412A (en) | Wireless communication device, wireless communication method and base station | |
| EP2686987A1 (en) | A method and apparatus | |
| CN102204397B (en) | For carrying out the method and apparatus of data processing in cellular networks |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130220 |