CN101998660B - Method, system and device for sending signaling - Google Patents
Method, system and device for sending signaling Download PDFInfo
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Abstract
The invention discloses a method, a system and a device for sending signaling, used for realizing the condition that UE (User Equipment) determines whether to utilize a mechanism of sending an RRC (Radio Resource Control) connection request signaling and an NAS (Non-Access Stratum) service request signaling in a combined way or not so as to further effectively shorten the access time delay, enhance the resource utilization rate and avoid the excess consumption of resources. The method provided in the invention comprises the following steps of: when the channel quality of a channel required bythe random access is judged to satisfy a preset channel quality condition, combining the RRC connection request signaling with the NAS service request signaling by the UE; and initiating a random access process to an evolved base station eNB by the UE and sending information Msg3 through the resource indicated in the random access response returned by the eNB, wherein the Msg3 contains the combined signaling.
Description
Technical field
The present invention relates to communication technical field, relate in particular to a kind of signaling method, system and device.
Background technology
In advanced person's Long Term Evolution (LTE-A) system, third generation collaborative project (3GPP, ThirdGeneration Partnership Project) requires the conversion time delay from idle pulley (Idle mode) to connection mode (Connected mode) to be less than 50 milliseconds (ms).In order to reach this target, introduced in random access procedure Radio Link control (RRC) signaling and Non-Access Stratum (NAS, Non-Access Stratum) signaling merges the technology of transmission, so that air interface connect to set up and to be connected connection foundation with network side and can to carry out simultaneously, and then can save the time delay of access.But RRC connects the merging of setting up demand signalling and NAS service request signaling and sends for being in the bad subscriber equipment of cell edge, power limited or channel condition (UE), and its gain is limited.
UE is comprised to the process that connection mode shifts by idle pulley: RRC connects the process of setting up of setting up process, fail safe activation, radio bearer.In traditional Long Term Evolution (LTE) system, UE elder generation initiating random access procedure, carry the RRC connection by information (Msg3) and set up request message, process is set up in the connection of initiating first between evolved base station (eNB) and the UE, send again the NAS business request information after to be connected being successfully established, set up the connection with mobile management entity (MME, Mobility Management Entity), activate security mechanism, idiographic flow as shown in Figure 1.
A kind of method that reduces the chain of command setup delay is to reduce the mutual number of times of shaking hands, RRC connected set up request message and NAS business request information to merge transmission be a kind of possible method, so that the RRC between UE and the eNB connects the process of setting up, with being connected the process of foundation and can carrying out simultaneously between eNB and the MME, shortened time delay, idiographic flow as shown in Figure 2.
Specifically in random access procedure, how to realize in Msg3 RRC connected and set up request message and the NAS business request information merges transmission, as described below:
Random access technology is the critical function of modern cell mobile communication systems, under a lot of scenes, must access at first at random, could continue follow-up operation.Take the LTE system as example, the scene that need to access at random comprises following five kinds:
One, the UE that is in standby (RRC-Idle) state enters connection (RRC-Connected) state.
Two, UE is after the wireless link failure, and recovery is connected with eNB's.
Three, UE has upstream data to arrive, but eNB does not distribute new ascending resource, and does not also have special-purpose dispatch request resource.
Four, eNB has downlink data to arrive, but can't directly dispatch UE, is at present the uplink loss state such as UE.
Five, handoff procedure.
Random access procedure among the LTE is divided into two kinds at present: the random access of competition and non-competing random access.
Non-competing random access is initiated by network side, is applied to above-mentioned the 4th kind and the 5th kind of random access scene, and namely downlink data arrives and switches.
Initial access for UE, namely enter connection mode by idle pulley, need to initiate the random access of competition, the competition random access procedure as shown in Figure 3, wherein Msg1 is used for sending random sequence (preamble), UE is at first according to the information size, the Information Selection random sequence groups such as path loss, namely organize A (group A) or group B (group B), then, the random preamble that selects in selected group, the subframe of selecting next available Packet Random Access Channel (PRACH, Packet Random Access CHannel) resource to occur is carried out preamble and is sent; For time division duplex (TDD) system, 1 subframe has a plurality of PRACH resources, and the random PRACH of selection resource sends preamble in 3 continuous subframes in the back.
Msg2 and Msg1 are half synchronous, realize by the Msg2 receiver window, described receiver window refers to wait in a period of time (a N millisecond or M subframe etc.) after sending Msg1 and receives Msg2, exceeds this time then not to think and can receive Msg2, random access failure.The content of Msg2 comprises random sequence sign (RA-Preamble identifier), Timing Advance (TA), uplink grant (UL grant) and distributes interim cell-radio network sign (Temporary C-RNTI) etc.
For initial access scene, the RRC that rrc layer produces on Msg3 transmission Common Control Channel (CCCH) channel connects to set up asks (RRC Connection Request) message, uses Radio Link control (RLC) transparent mode (TM).
For the UE of version 10 (R-10), wish to shorten the time delay of initial access, RRCConnection Request message and NAS service request (NAS Service Request) message can be incorporated among the Msg3 and send.Therefore, it is large that the transport block size of Msg3 bearer messages becomes, for channel condition UE preferably, and can be by distributing the message after more ascending resource or the higher modulation coding mode (MCS) of use transmit merging.But, for power limited or the relatively poor UE of channel condition, then can't adopt the mechanism that merges transmission to send the RRC connection and set up demand signalling and NAS service request signaling, therefore, not all UE can connect RRC and set up demand signalling and NAS service request signaling and merge and send to eNB.
In sum, prior art is in order to shorten the access delay of LTE-A UE, introduced the mechanism of in random access procedure, the RRC connection being set up demand signalling and NAS service request signaling merging transmission, but prior art does not provide UE, and how whether this determine to adopt this mechanism to send RRC to connect and to set up demand signalling and NAS service request signaling, if therefore all UE are adopted RRC are connected the mechanism of setting up demand signalling and NAS service request signaling merging transmission, the unreasonable of the utilization of resources can be caused, and new time delay might be introduced.
Summary of the invention
The embodiment of the invention provides a kind of signaling method, system and device, in order to realize that UE determines whether to adopt RRC is connected the mechanism of setting up demand signalling and NAS service request signaling merging transmission, thereby effectively shorten access delay, improve resource utilization, avoid the too much consumption of resource.
A kind of signaling method that the embodiment of the invention provides comprises:
User equipment (UE) is controlled RRC with Radio Link and is connected and set up demand signalling and Non-Access Stratum NAS service request signaling merges when judging that random access needs the channel quality of the channel that adopts to satisfy default channel quality conditions;
Described UE is to evolved base station eNB initiating random access procedure, and the resource of the accidental access response indicating that returns by described eNB sends information Msg3, comprises the signaling after the described merging among this Msg3.
A kind of UE that the embodiment of the invention provides comprises:
Merge to send decision unit, be used for when judging that random access needs the channel quality of the channel that adopts to satisfy default channel quality conditions, Radio Link is controlled demand signalling is set up in the RRC connection and Non-Access Stratum NAS service request signaling merges;
The unit is initiated in random access, be used for to described eNB initiating random access procedure, and the resource of the accidental access response indicating that returns by described eNB sends information Msg3, comprises the signaling after the described merging among this Msg3.
A kind of communication system that the embodiment of the invention provides comprises: evolved base station eNB and at least one user equipment (UE);
UE is used for when judging that random access needs the channel quality of the channel that adopts to satisfy default channel quality conditions, Radio Link is controlled demand signalling is set up in the RRC connection and Non-Access Stratum NAS service request signaling merges; To described eNB initiating random access procedure, and the resource of the accidental access response indicating that returns by described eNB sends information Msg3, comprises the signaling after the described merging among this Msg3;
Described eNB is used for the random access procedure according to the UE initiation, returns accidental access response to UE, comprising the resource that is used for carrying Msg3.
The embodiment of the invention, connects RRC and sets up demand signalling and NAS service request signaling merges when judging that random access needs the channel quality of the channel that adopts to satisfy default channel quality conditions by UE; UE is to the eNB initiating random access procedure, and the resource of the accidental access response indicating that returns by eNB sends information Msg3, comprise the signaling after the described merging among this Msg3, realized UE determines whether adopt the mechanism of the RRC connection being set up demand signalling and NAS service request signaling merging transmission, namely for channel condition UE preferably, the signaling that can initially access merges transmission, and then shortening access delay, improved resource utilization, for the relatively poor UE of channel condition, then avoid the too much consumption of resource, saved resource.
Description of drawings
Fig. 1 is the C plane activation schematic diagram of version 8 (Rel-8) in the prior art;
C plane activation schematic diagram when Fig. 2 is prior art employing RRC connection foundation request and NAS service request merging transmission;
Fig. 3 is competition random access procedure schematic diagram of the prior art;
The schematic flow sheet of a kind of signaling method that Fig. 4 provides for the embodiment of the invention;
The structural representation of the communication system that Fig. 5 provides for the embodiment of the invention;
The structural representation of the UE that Fig. 6 provides for the embodiment of the invention.
Embodiment
The embodiment of the invention provides a kind of signaling method, system and device, in order to realize that UE determines whether to adopt RRC is connected the mechanism of setting up demand signalling and NAS service request signaling merging transmission, thereby effectively shorten access delay, improve resource utilization, avoid the too much consumption of resource.
UE in the embodiment of the invention is connected information to determine whether adopting the mechanism (be called for short signaling and merge transmit mechanism) of the RRC connection being set up demand signalling and NAS service request signaling merging transmission according to channel condition with power.
The embodiment of the invention proposes in the LTE-A system, LTE-AUE is before the random access procedure take initial access as purpose, can judge whether current channel quality satisfies default channel quality conditions according to the information such as power grade of channel situation and/or UE, if so, then in random access procedure, adopt signaling to merge transmit mechanism merging transmission RRC connection and set up demand signalling and NAS service request signaling; Otherwise, in random access procedure, only send the RRC connection and set up demand signalling.
Below in conjunction with accompanying drawing the technical scheme that the embodiment of the invention provides is described.
Referring to Fig. 4, a kind of signaling method that the embodiment of the invention provides comprises:
S101, UE when judging that random access needs the channel quality of the channel that adopts to satisfy default channel quality conditions, connected RRC and set up demand signalling and NAS service request signaling merges before initiating initial access.
S102, UE are to the eNB initiating random access procedure, and the resource of the accidental access response indicating that returns by eNB sends information 3 (Msg3), wherein comprises RRC is connected the signaling (hereinafter to be referred as the signaling after the merging) of setting up after demand signalling merges with NAS service request signaling.
Random access take initial access as purpose is that UE initiates under idle pulley, and what adopted this moment is the competition Random Access.
The below provides UE and judges whether to carry out two kinds of specific embodiments that demand signalling and NAS service request signaling merging transmission are set up in the RRC connection.
Embodiment one:
UE under the idle pulley carry out that the residential quarter is selected or cell reselection process in, need to use some measuring amount, such as the received signal power (RSRP) of UE etc., RSRP measures resulting measuring amount by the signal that eNB is sent.
UE can judge channel quality according to the measuring amount in residential quarter selection or the cell reselection process, for example, RSRP and the RSRP threshold value A that presets can be compared, as RSRP during greater than A, illustrate that channel quality is better, i.e. random access needs the channel quality of the channel that adopts to satisfy default channel quality conditions, can be in random access procedure carries signaling after the merging by Msg3; Otherwise, illustrating that channel quality is not enough to support the signaling after Msg3 carries merging, i.e. random access needs the channel quality of the channel that adopts not satisfy default channel quality conditions, only can carry RRC and connect and set up demand signalling in Msg3.
Preferably, described default RSRP threshold value A sends to UE by eNB by Cell Broadcast CB.
The step of the initial access of concrete initiation comprises:
Step 1: UE determines to need to initiate initial access process, then judge according to present measurement result RSRP whether current channel quality satisfies default channel quality conditions in advance, if RSRP is greater than default RSRP threshold value, then the rrc layer of UE connects RRC and sets up demand signalling and NAS service request signaling and be merged into a bag and be sent to bottom, i.e. media access control (MAC) layer; Otherwise the rrc layer of UE only sends the RRC connection and sets up the demand signalling bag to the MAC layer.
The MAC layer of step 2: UE receives the indication that rrc layer sends, the beginning initiating random access procedure, select suitable Preamble group according to Msg3 size, group A, group B and path loss information etc., in selected group, choose at random Preamble, send Preamble to eNB in suitable PRACH resource.
In addition, if need to the UE of version 10 (R10) be optimized, can utilize special Preamble or PRACH resource etc. to indicate to eNB.Described optimization specifically comprises: can initiate random access with Preamble or the PRACH resource of the UE that is different from version 8 (R8) for R10UE, eNB can judge the version of UE exactly after receiving random access request, for R10UE, eNB knows that clearly this moment, UE wished to initiate signaling merging transmission, then can distribute accordingly the signaling after enough large resource merges in order to carrying when distributing Msg3 message resource; For R8UE, then keep former allocative decision, avoid waste.
Step 3: eNB sends accidental access response to UE in information 2 (Msg2) window, wherein comprise uplink grant (UL grant) information.
If UE has indicated eNB from as R10UE in the step 2, then eNB may be thought of as this UE and distributes larger resource or higher MCS when Resources allocation, carries the Msg3 of the signaling after the merging in order to carrying.
After the MAC layer of step 4: UE receives accidental access response, send Msg3 according to the indication of UL grant in corresponding resource, wherein contain signaling after the merging or RRC and connect and set up demand signalling.
Need to prove, even the rrc layer of UE has issued the signaling after the merging to the MAC layer, the MAC layer also may not send the signaling after the merging, because if the signaling after the inadequate resource that distributes in the accidental access response merges with carrying, then the MAC layer of UE can't transmit signaling after the merging to eNB, and at this moment, the MAC layer can carry out alternately with the rrc layer of UE, the rrc layer of request UE only issues RRC and connects and to set up demand signalling to the MAC layer, and the MAC layer only transmits RRC and connects and set up demand signalling to eNB so.
Step 5: after eNB receives Msg3, obtain the content of wherein carrying, if wherein carry only have RRC to connect to set up a demand signalling, then RRC is connected and sets up demand signalling and process; If also comprised simultaneously NAS service request signaling, then also NAS service request signaling is carried out respective handling.
Embodiment two:
The rrc layer of UE is before initiating initial access, carry out alternately with bottom (MAC layer or physical layer) first, the indication bottom reports necessary channel information, for example: path loss, RSRP, power grade of UE etc., the rrc layer of UE is comprehensively judged the information that bottom reports, for example, the size of data that sends as required, path loss, power climbing information, the transmitting power that the estimation such as expectation received power is required, if transmitting power is higher than the maximum transmission power of UE, judge that then random access needs the channel quality of the channel of employing not satisfy default channel quality conditions, can not adopt and merge the mechanism that sends, demand signalling is set up in the RRC connection and NAS service request signaling can only send respectively, otherwise judge that random access needs the channel quality of the channel that adopts to satisfy default channel quality conditions, can send the signaling after the merging.
The process of the initial access of concrete initiation comprises:
Step 1: UE determines to need to initiate initial access process, the rrc layer notice bottom reporting channel information of UE, and the channel information that reports according to bottom, judge random access needs the channel quality of the channel of employing whether to satisfy default channel quality conditions, if so, then the rrc layer of UE connects RRC and sets up demand signalling and NAS service request signaling and be merged into a bag and be sent to the MAC layer; Otherwise the rrc layer of UE only sends the RRC connection and sets up the demand signalling bag to the MAC layer.
The MAC layer of step 2: UE receives the indication that rrc layer sends, the beginning initiating random access procedure, select suitable Preamble group according to Msg3 size, group A, group B and path loss information etc., in selected group, choose at random Preamble, send Preamble to eNB in suitable PRACH resource.
In addition, if need to the UE of version 10 (R10) be optimized, can utilize special Preamble or PRACH resource etc. to indicate to eNB.
Step 3: eNB sends accidental access response to UE in the Msg2 window, wherein comprise uplink grant (UL grant) information.
If UE has indicated eNB from as R10UE in the step 2, then eNB may be thought of as this UE and distributes larger resource or higher MCS when Resources allocation, carries the Msg3 of the signaling after the merging in order to carrying.
After the MAC layer of step 4: UE receives accidental access response, send Msg3 according to the indication of UL grant in corresponding resource, wherein contain signaling after the merging or RRC and connect and set up demand signalling.
If the rrc layer of UE has issued the signaling after the merging to the MAC layer, the MAC layer also may not send the signaling after the merging, because if the signaling after the inadequate resource that distributes in the accidental access response merges with carrying, then the MAC layer of UE can't transmit signaling after the merging to eNB, at this moment, the MAC layer can carry out alternately with the rrc layer of UE, and the rrc layer of request UE only issues RRC and connects and set up demand signalling to the MAC layer, and the MAC layer only transmits the RRC connection and sets up demand signalling to eNB so.
Step 5: after eNB receives Msg3, obtain the content of wherein carrying, if wherein carry only have RRC to connect to set up a demand signalling, then RRC is connected and sets up demand signalling and process; If also comprised simultaneously NAS service request signaling, then also NAS service request signaling is carried out respective handling.
In addition, the MAC layer of UE also can be according to power grade of path loss, RSRP, UE etc., judge that random access needs the channel quality of the channel of employing to satisfy default channel quality conditions, and judged result reported rrc layer, if channel quality satisfies default channel quality conditions, then rrc layer connects RRC and sets up demand signalling and NAS service request signaling and be merged into a bag and be sent to the MAC layer; Otherwise the rrc layer of UE only sends the RRC connection and sets up the demand signalling bag to the MAC layer.
Wherein, the MAC layer judges that random access needs the channel quality of the channel that adopts to satisfy the judgment criterion of default channel quality conditions, can be path loss whether less than the line loss threshold value, if so, judge that then channel quality satisfies default channel quality conditions; Otherwise, judge that channel quality does not satisfy default channel quality conditions.
Preferably, described line loss threshold value can send to UE by Cell Broadcast CB by eNB, also can be UE calculates by special parameter, and described special parameter is the parameter that the ability by system information or UE obtains.
Preferably, UE judges that random access needs the channel quality of the channel of employing to satisfy before the step of default channel quality conditions, UE receives the judgment criterion indication information that sends in the Cell Broadcast CB, and according to this judgment criterion indication information, determine whether the channel quality of the channel that need to adopt random access satisfies the judgment criterion that default channel quality conditions is judged required employing.
Referring to Fig. 5, a kind of communication system that the embodiment of the invention provides comprises: at least one user equipment (UE) 11 and evolved base station eNB 12.
UE 11, are used for before initiating initial access, when judging that random access needs the channel quality of the channel that adopts to satisfy default channel quality conditions, RRC connected set up demand signalling and NAS service request signaling merges; To eNB 12 initiating random access procedures, and the resource of the accidental access response indicating that returns by described eNB 12 sends information Msg3, wherein comprises the signaling after the merging.
ENB 12, are used for the random access procedure according to UE 11 initiations, return accidental access response to UE 11, comprising the resource that is used for carrying Msg3.
Better, referring to Fig. 6, described UE11 comprises:
Merge to send decision unit 111, be used for before initiating initial access, when judging that random access needs the channel quality of the channel that adopts to satisfy default channel quality conditions, RRC connected set up demand signalling and NAS service request signaling merges.
Unit 112 is initiated in random access, be used for to eNB 12 initiating random access procedures, and the resource of the accidental access response indicating that returns by eNB 12 sends information Msg3, wherein comprises the signaling after the merging.
Better, described merging sends decision unit 111, and in the process of carrying out residential quarter selection or cell reselection, the signal that the Sampling network side sends is determined received signal power RSRP; RSRP is compared with default RSRP threshold value, as RSRP during greater than the RSRP threshold value, judge that random access needs the channel quality of the channel that adopts to satisfy default channel quality conditions.
Perhaps, described merging sends decision unit 111, by the MAC layer of described UE 11, path loss and line loss threshold value is compared, when path loss during less than the line loss threshold value, judge that random access needs the channel quality of the channel that adopts to satisfy default channel quality conditions.
Better, described merging sends decision unit 111, and the Cell Broadcast CB by described eNB 12 sends obtains RSRP threshold value or line loss threshold value.
Perhaps, described merging sends decision unit 111, the bottom reporting channel information of notice UE 11; The channel information that reports according to bottom determines to send the needed transmitting power of signaling after the described merging, when this transmitting power is lower than the maximum transmission power of described UE, judge that random access needs the channel quality of the channel of employing to satisfy default channel quality conditions.
Better, described merging sends decision unit 111, also be used for the judgment criterion indication information that carries according to the Cell Broadcast CB that described eNB 12 sends, determine whether the channel quality of the channel that need to adopt random access satisfies the judgment criterion that default channel quality conditions is judged required employing.
Better, when described merging sends decision unit 111 and judges that random access needs the channel quality of the channel that adopts not satisfy default channel quality conditions, trigger random access and initiate unit 112 and only send described RRC by Msg3 and connect and set up demand signalling.
Better, when the inadequate resource of the accidental access response indicating that eNB 12 returns during with the signaling after carrying described merging, random access is initiated unit 112 and is only sent RRC by Msg3 and connect and set up demand signalling.
Better, merging transmission decision unit 111 is the rrc layer processing unit of UE 11, it is the MAC layer processing unit of UE 11 that unit 112 is initiated in random access.
In sum, the embodiment of the invention, when judging that random access needs the channel quality of the channel that adopts to satisfy default channel quality conditions, connected RRC and sets up demand signalling and NAS service request signaling merges before initiating initial access by UE; UE is to the eNB initiating random access procedure, and the resource of the accidental access response indicating that returns by eNB sends information Msg3, wherein comprise the signaling after the merging, realized UE determines whether adopt the mechanism of the RRC connection being set up demand signalling and NAS service request signaling merging transmission, namely for channel condition UE preferably, the signaling that can initially access merges transmission, and then shortening access delay, improved resource utilization, for the relatively poor UE of channel condition, then avoid the too much consumption of resource, saved resource.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (11)
1. a signaling method is characterized in that, the method comprises:
User equipment (UE) judges random access needs the channel quality of the channel of employing whether to satisfy default channel quality conditions;
When described channel quality satisfied default channel quality conditions, described UE controlled RRC with Radio Link and connects and set up demand signalling and Non-Access Stratum NAS service request signaling merges;
Described UE is to evolved base station eNB initiating random access procedure, when described channel quality satisfies default channel quality conditions, whether the resource of judging the accidental access response indicating that described eNB returns is enough to carry the signaling after the merging, if, then send information Msg3, comprise the signaling after the described merging among this Msg3, connect and set up demand signalling otherwise only send described RRC by Msg3; When described channel quality does not satisfy default channel quality conditions, only send described RRC connection by information Msg3 and set up demand signalling.
2. method according to claim 1 is characterized in that, UE judges that the step that random access needs the channel quality of the channel of employing to satisfy default channel quality conditions comprises:
Described UE is in the process of carrying out residential quarter selection or cell reselection, and the signal that the Sampling network side sends is determined received signal power RSRP;
Described UE compares described RSRP with default RSRP threshold value, as described RSRP during greater than described default RSRP threshold value, judge that random access needs the channel quality of the channel that adopts to satisfy default channel quality conditions.
3. method according to claim 1 is characterized in that, UE judges that the step that random access needs the channel quality of the channel of employing to satisfy default channel quality conditions comprises:
The media access control MAC layer of described UE compares path loss and line loss threshold value, when described path loss during less than described line loss threshold value, judges that random access needs the channel quality of the channel that adopts to satisfy default channel quality conditions.
4. method according to claim 1 is characterized in that, UE judges that the step that random access needs the channel quality of the channel of employing to satisfy default channel quality conditions comprises:
The rrc layer notice bottom reporting channel information of described UE;
The channel information that the rrc layer of described UE reports according to bottom is determined the needed transmitting power of signaling after the described merging of transmission, when described transmitting power is lower than the maximum transmission power of described UE, judge that random access needs the channel quality of the channel of employing to satisfy default channel quality conditions.
5. method according to claim 1 is characterized in that, UE judges that random access needs the channel quality of the channel of employing to satisfy before the step of default channel quality conditions, and the method also comprises:
Described UE receives the judgment criterion indication information that sends in the Cell Broadcast CB, and according to this judgment criterion indication information, determine judgment criterion, described judgment criterion is used for judging whether the random channel quality that accesses the channel that need to adopt satisfies default channel quality conditions.
6. a user equipment (UE) is characterized in that, described UE comprises:
Merge and send decision unit, be used for judging whether the random channel quality that accesses the channel that need to adopt satisfies default channel quality conditions, when described channel quality satisfies default channel quality conditions, Radio Link is controlled RRC connect and set up demand signalling and Non-Access Stratum NAS service request signaling merges;
The unit is initiated in random access, be used for to the eNB initiating random access procedure, when described channel quality satisfies default channel quality conditions, if the resource of the accidental access response indicating that described eNB returns is enough to carry the signaling after the merging, transmission information Msg3, comprise the signaling after the described merging among this Msg3, if the signaling after the inadequate resource of the accidental access response indicating that described eNB returns merges with carrying only sends described RRC by Msg3 and connects and set up demand signalling; When described channel quality does not satisfy default channel quality conditions, only send described RRC connection by information Msg3 and set up demand signalling.
7. UE according to claim 6 is characterized in that, described merging sends decision unit, and in the process of carrying out residential quarter selection or cell reselection, the signal that the Sampling network side sends is determined received signal power RSRP; Described RSRP is compared with default RSRP threshold value, as described RSRP during greater than described default RSRP threshold value, judge that random access needs the channel quality of the channel that adopts to satisfy default channel quality conditions.
8. UE according to claim 6, it is characterized in that, described merging sends decision unit, media access control MAC layer by described UE, path loss and line loss threshold value are compared, when described path loss during less than described line loss threshold value, judge that random access needs the channel quality of the channel that adopts to satisfy default channel quality conditions.
9. UE according to claim 6 is characterized in that, described merging sends decision unit, notifies the bottom reporting channel information of described UE; The channel information that reports according to described bottom determines to send the needed transmitting power of signaling after the described merging, when described transmitting power is lower than the maximum transmission power of described UE, judge that random access needs the channel quality of the channel of employing to satisfy default channel quality conditions.
10. UE according to claim 6, it is characterized in that, described merging sends decision unit, the judgment criterion indication information that also carries for the Cell Broadcast CB that sends according to described eNB, determine judgment criterion, described judgment criterion is used for judging whether the random channel quality that accesses the channel that need to adopt satisfies default channel quality conditions.
11. a communication system is characterized in that, described system comprises: evolved base station eNB and at least one user equipment (UE);
UE is used for judging whether the random channel quality that accesses the channel that need to adopt satisfies default channel quality conditions; When described channel quality satisfies default channel quality conditions, Radio Link is controlled RRC connect and set up demand signalling and Non-Access Stratum NAS service request signaling merges; To evolved base station eNB initiating random access procedure, when described channel quality satisfies default channel quality conditions, whether the resource of judging the accidental access response indicating that described eNB returns is enough to carry the signaling after the merging, if, then send information Msg3, comprise the signaling after the described merging among this Msg3, connect and set up demand signalling otherwise only send described RRC by Msg3; When described channel quality does not satisfy default channel quality conditions, only send described RRC connection by information Msg3 and set up demand signalling;
Described eNB is used for the random access procedure according to the UE initiation, returns accidental access response to UE, comprising the resource that is used for carrying Msg3.
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| WO2014032258A1 (en) * | 2012-08-30 | 2014-03-06 | 华为技术有限公司 | Bearer establishment method, base station and user equipment |
| CN103067880A (en) * | 2013-01-09 | 2013-04-24 | 中兴通讯股份有限公司 | Method of sending clustering messages, network side equipment and terminal equipment |
| WO2014201697A1 (en) * | 2013-06-21 | 2014-12-24 | 华为技术有限公司 | Method and device for establishing rrc connection |
| CN104427634B (en) * | 2013-09-02 | 2019-08-13 | 南京中兴软件有限责任公司 | Signaling method and device |
| CN105307154B (en) * | 2014-07-25 | 2019-04-26 | 普天信息技术有限公司 | A kind of terminal report method based on TD-LTE group system |
| CN108282816A (en) * | 2017-01-05 | 2018-07-13 | 中兴通讯股份有限公司 | A kind of cut-in method and access device |
| EP3598835B1 (en) | 2017-04-01 | 2021-12-15 | Cloudminds (Shenzhen) Robotics Systems Co., Ltd. | Random access method and apparatus |
| US11109295B2 (en) * | 2018-05-21 | 2021-08-31 | Qualcomm Incorporated | Interaction of physical channel changes with physical channel based cell measurements |
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