CN104159319A - Method of transmitting competition solution information and base station - Google Patents
Method of transmitting competition solution information and base station Download PDFInfo
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- CN104159319A CN104159319A CN201410425804.6A CN201410425804A CN104159319A CN 104159319 A CN104159319 A CN 104159319A CN 201410425804 A CN201410425804 A CN 201410425804A CN 104159319 A CN104159319 A CN 104159319A
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Abstract
An embodiment of the invention discloses a method of transmitting competition solution information and a base station, relating to the field of wireless communication for improving the success rate of random access and reducing the time delay of random access. In the embodiment of the invention, the base station receives first scheduling transmission information transmitted by a terminal; the base station transmits the competition solution information to the terminal on a plurality of downlink sub-frames, and feedback sub-frames of hybrid automatic repeat requests corresponding to two adjacent sub-frames in the downlink sub-frames are different, so that the success rate of random access is improved and the time delay of random access is reduced.
Description
Technical field
The present invention relates to wireless communication field, relate in particular to a kind of sending method and base station that solves message of competing.
Background technology
At 3GPP LTE (Long Term Evolution, Long Term Evolution) in system, UE (User Equipment, terminal) initiate the random flow process accessing of competition as shown in Figure 1, the flow process of the random access of communication protocol regulation competition divides four steps to complete, as shown in Figure 1, this four step is called Msg1～Msg4 (Msg, i.e. message).
Msg1 (message 1): eNB (evolved NodeB, enode b, be base station) be responsible for to preamble code and for sending PRACH (the Physical Random Access Channel of preamble (leading) code, Physical Random Access Channel) resource is configured, and by system message by UE resident in configuration result notifying cell, UE is random in the set of preamble code selects a preamble code to send.
Msg2 (message 2): Msg2 message is eNB response to UE after receiving Msg1.Msg2 does not support HARQ (Hybrid Automatic Repeat Request, mixed automatic retransfer request), does not feed back retransmission processes.
Msg 3 (message 3): UE correctly receives after Msg2, transmits Msg3 in the ascending resource distributing at eNB.HARQ process is supported in the transmission of Msg3.
Msg4 (message 4): Msg4 carries UE competition by MAC (Media Access Control, media access control) layer control unit (Contention Resolution Identity MAC CE) and solves sign.Msg 4 message can only be carried competition and be solved message, also can carry RRC connection simultaneously and set up message.Msg4 adopts HARQ mechanism, but only has the just feeding back ACK (Acknowledgement confirms) of the Msg4 UE that also successfully solution is competed of successfully decoding, and other situation is not fed back.
For above-mentioned random access procedure, Msg3 is the message of scheduled transmission for the first time in radio resource control RRC process of establishing, UE for initial access, this UE has carried C-RNTI (Cell Radio Network Temporary Identifier in MSG3 message, Cell Radio Network Temporary Identifier/Identity, Cell-RNTI) or carried Temporal C-RNTI (Temporal Cell Radio Network Temporary Identifier, interim C-RNTI) and the sign of this UE (as, S-TMSI (System Architecture Evolution-Temporary Mobile Subscriber Identity, the interim identification code of System Architecture Evolution)), UE is after eNB sends MSG3 message, start the competition of MAC layer and solve timer (mac-Contention Resolution Timer).ENB is after receiving MSG3 message, because this UE is the UE of initial access, eNB is used fixing MCS (Modulation and Coding Scheme, modulation and coding strategy) grade, adopt transparent mode (TM) to this UE, to return to MSG4 message on CCCH (Common Control Channel, Common Control Channel) channel.If UE competition solve timer (maximum duration is 64ms) receive before overtime that eNB returns, carry the C-RNTI of this UE or carry the Temporal C-RNTI of this UE and the MSG4 message of the sign of UE, UE is to eNB feeding back ACK message, for notify eNB this access successfully at random; If eNB does not receive the ACK message of UE feedback within a period of time, eNB adopts HARQ mode, after 10ms, to UE, resends MSG4 message; If UE did not receive MSG4 message before competition solves timer expiry, this random access failure.
In prior art, when for transmitting the channel circumstance of CCCH channel of MSG4 message when bad, or, when the MCS grade of eNB use is not mated with channel circumstance, can make UE cannot correctly receive the MSG4 message that eNB returns, cause the time delay of random access, even also likely caused random access failure.
Summary of the invention
The embodiment of the present invention provides a kind of sending method that solves message of competing, and in order to improve the success rate of random access, reduces the time delay of random access, comprising:
The message of scheduled transmission for the first time in the radio resource control RRC process of establishing that base station receiving terminal sends;
Described base station is for the described message of scheduled transmission for the first time, sends competition solve message on a plurality of descending sub frames to described terminal, and the feedback subframe of the mixed automatic retransfer request HARQ that at least two adjacent sub-frame in described a plurality of descending sub frames are corresponding is not identical.
Visible, the embodiment of the present invention provides a kind of and has solved for competition the scheme that message MSG4 message is carried out many subframe binding transmission, base station in the embodiment of the present invention can send competition to terminal and solve message MSG4 message on the not identical descending sub frame of a plurality of feedback subframes, and without waiting for whether feeding back ACK message of terminal, thereby improved the success rate of the random access of terminal.
Preferably, when described base station sends competition solution message to described terminal on described a plurality of descending sub frames at every turn, start described competition and solve transmit timing device corresponding to message; If what described base station solved in described competition that transmit timing device corresponding to message do not receive that described competition solves message after overtime replys ACK message, the described competition of described base station reduction transmission solves modulation and the coding strategy MCS grade of message, and on described a plurality of descending sub frames, uses the MCS grade after reducing to retransmit described competition solution message; Wherein, the timing time length that described competition solves transmit timing device corresponding to message is less than described competition and solves the timing time length that competition corresponding to message solves timer.
Visible, the embodiment of the present invention can be according to the matching degree of channel circumstance or MCS grade and current channel circumstance, and adjustment MCS grade has initiatively improved terminal and received the success rate of MSG4 message, thereby improved the success rate of the random access of terminal.
Preferably, when described base station sends competition solution message to described terminal on described a plurality of descending sub frames at every turn, start described competition and solve transmit timing device corresponding to message; If described base station is after sending described competition solution message, receive the non-NACK of the replying message of described terminal feedback, and it is not overtime that described in current time, competition solves transmit timing device corresponding to message, the described competition of described base station reduction transmission solves the MCS grade of message, and on described a plurality of descending sub frames, uses the MCS grade after reducing to retransmit described competition solution message; Wherein, the timing time length that described competition solves transmit timing device corresponding to message is less than described competition and solves the timing time length that competition corresponding to message solves timer.
Visible, the embodiment of the present invention can be according to the matching degree of channel circumstance or MCS grade and current channel circumstance, and adjustment MCS grade has initiatively improved terminal and received the success rate of MSG4 message, thereby improved the success rate of the random access of terminal.
Preferably, it is identical that the competition sending on a plurality of descending sub frames solves the HARQ sign of carrying in message, and it is different that the described competition sending on a plurality of descending sub frames solves the redundancy versions sign of carrying in message.Like this, can make terminal recognition go out the competition solution message that base station sends on a plurality of descending sub frames.
Preferably, after described base station receives the message of scheduled transmission for the first time that terminal sends, on a plurality of descending sub frames, to described terminal, send before competition solves message, also comprise: determine whether to enable and on a plurality of descending sub frames, competition is solved to message and bind transmission; Described base station sends competition to described terminal and solves message on a plurality of descending sub frames, be specially: if described base station is determined to enable on a plurality of descending sub frames, competition solution message is bound to transmission, described base station sends competition to described terminal and solves message on a plurality of descending sub frames.Like this, base station can judge whether needing to bind transmission according to factors such as channel condition, received powers, thereby increased the flexibility of the method for the random access that the embodiment of the present invention provides.
Preferably, described determine whether to enable on a plurality of descending sub frames solves message to competition and binds transmission, comprise: according to current channel condition information or HARQ feedback, determine whether to enable on a plurality of descending sub frames competition solution message is bound to transmission.Like this, base station can judge whether needing to bind transmission according to current channel condition information or HARQ feedback, thereby increased the flexibility of the method for the random access that the embodiment of the present invention provides.
A kind of base station that the embodiment of the present invention provides, comprising:
Receiving element, the message of scheduled transmission for the first time of the radio resource control RRC process of establishing sending for receiving terminal;
Transmitting element, solves message for send competition to described terminal on a plurality of descending sub frames, and in described a plurality of descending sub frames, the feedback subframe of mixed automatic retransfer request HARQ corresponding to adjacent two subframes is not identical.
Visible, the embodiment of the present invention provides a kind of and has solved for competition the scheme that message MSG4 message is carried out many subframe binding transmission, base station in the embodiment of the present invention can send competition to terminal and solve message MSG4 message on the not identical descending sub frame of a plurality of feedback subframes, and without waiting for whether feeding back ACK message of terminal, thereby improved the success rate of the random access of terminal.
Preferably, this base station also comprises: described competition solves transmit timing device corresponding to message; Described competition solves transmit timing device corresponding to message and to described terminal, sends when competition solves message and start at every turn on described a plurality of descending sub frames; Described receiving element also for, what receive that described competition solves message replys ACK message; This base station also comprises: MCS level adjustment unit and described competition solve transmit timing device corresponding to message; Described MCS level adjustment unit, for after transmit timing device corresponding to described competition solution message is overtime, when described receiving element do not receive described competition solve message reply ACK message time, reduce modulation and coding strategy MCS grade that the described competition of transmission solves message; Described transmitting element also for, the MCS grade after use reducing on described a plurality of descending sub frames retransmits described competition and solves message; Wherein, the timing time length that described competition solves transmit timing device corresponding to message is less than described competition and solves the timing time length that competition corresponding to message solves timer.
Visible, the embodiment of the present invention can be according to the matching degree of channel circumstance or MCS grade and current channel circumstance, and adjustment MCS grade has initiatively improved terminal and received the success rate of MSG4 message, thereby improved the success rate of the random access of terminal.
Preferably, this base station also comprises: described competition solves transmit timing device corresponding to message; Described competition solves transmit timing device corresponding to message and to described terminal, sends when competition solves message and start at every turn on described a plurality of descending sub frames; Described receiving element also for, receive the non-NACK of the replying message of described terminal feedback; This base station also comprises: MCS level adjustment unit and described competition solve transmit timing device corresponding to message; Described MCS level adjustment unit, for receive the non-NACK of the replying message of described terminal feedback at described receiving element, and it is not overtime described in current time, to compete transmit timing device corresponding to solution message, reduces the MCS grade that the described competition of transmission solves message; Described transmitting element also for, the MCS grade after use reducing on described a plurality of descending sub frames retransmits described competition and solves message; Wherein, the timing time length that described competition solves transmit timing device corresponding to message is less than described competition and solves the timing time length that competition corresponding to message solves timer.
Visible, the embodiment of the present invention can be according to the matching degree of channel circumstance or MCS grade and current channel circumstance, and adjustment MCS grade has initiatively improved terminal and received the success rate of MSG4 message, thereby improved the success rate of the random access of terminal.
Preferably, it is identical that the described competition sending on a plurality of descending sub frames solves the HARQ sign of carrying in message, and it is different that the described competition sending on a plurality of descending sub frames solves the redundancy versions sign of carrying in message.Like this, can make terminal recognition go out the competition solution message that base station sends on a plurality of descending sub frames.
Preferably, this base station also comprises: decision unit, for receive the message of scheduled transmission for the first time that terminal sends at described receiving element after, described transmitting element sends before competition solves message to described terminal on a plurality of descending sub frames, determine whether to enable on a plurality of descending sub frames, competition to be solved to message and bind transmission; Described transmitting element specifically for, at described decision unit, determine and to enable on a plurality of descending sub frames when competition is solved message and bind transmission, on a plurality of descending sub frames, to described terminal, send competition solution message.Like this, base station can judge whether needing to bind transmission according to factors such as channel condition, received powers, thereby increased the flexibility of the method for the random access that the embodiment of the present invention provides.
Preferably, described decision unit specifically for, according to current channel condition information or HARQ feedback, determine whether to enable on a plurality of descending sub frames and competition to be solved to message bind transmission.Like this, base station can judge whether needing to bind transmission according to current channel condition information or HARQ feedback, thereby increased the flexibility of the method for the random access that the embodiment of the present invention provides.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing of required use during embodiment is described is briefly introduced, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the schematic flow sheet that in prior art, terminal is initiated random access;
A kind of schematic flow sheet of competing the sending method that solves message that Fig. 2 provides for the embodiment of the present invention;
The structural representation of a kind of base station that Fig. 3 provides for the embodiment of the present invention.
Embodiment
In order to make the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing, the present invention is described in further detail, and obviously, described embodiment is only a part of embodiment of the present invention, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making all other embodiment that obtain under creative work prerequisite, belong to the scope of protection of the invention.
The embodiment of the present invention is applicable to LTE-TDD (Long Term Evolution-Time Division Duplexing, time-division Long Term Evolution) scene that under framework, terminal is carried out random access, be particularly useful for when channel circumstance is not good, or when MCS grade is not mated with channel circumstance, terminal is carried out the scene of random access.The embodiment of the present invention is without terminal is transformed, and terminal can access according to the random access procedure of 3GPP agreement regulation.Preferably, the message of scheduled transmission for the first time in the embodiment of the present invention can be the MSG3 in random access procedure (Message3) message, and it can be the MSG4 in random access procedure (Message4) message that the competition in the embodiment of the present invention solves message.
Fig. 2 shows a kind of schematic flow sheet of competing the sending method that solves message that the embodiment of the present invention provides, and as shown in Figure 2, the method comprises:
Step 21: the message of scheduled transmission for the first time that base station receiving terminal sends.
During specific implementation, the MSG3 message that base station receiving terminal sends, this MSG3 message of base station in response, has carried the identification information of UE, as C-RNTI or Temporal C-RNTI+UE ID in this MSG3 message.If terminal does not receive the response message for this MSG3 that base station is returned, according to the regulation of 3GPP agreement, retransmit.It should be noted that, according to 3GPP agreement regulation, terminal is after base station sends MSG3 message, and the competition that starts terminal MAC layer solves timer, and the timing time length that this competition solves timer is 64ms.
Step 22: base station sends competition to terminal and solves message on a plurality of descending sub frames, in described a plurality of descending sub frames, the feedback subframe of HARQ corresponding at least two adjacent sub-frame is not identical.
During specific implementation, base station, on N descending sub frame, sends the MSG4 message for above-mentioned MSG3 to terminal, and wherein, N can be for being greater than arbitrarily 1 integer.Concrete, the embodiment of the present invention be take N=4 and is described as example, and base station solves message to the continuous transmission competition of terminal on 4 descending sub frames, and the feedback subframe of HARQ corresponding to any two subframes in above-mentioned 4 descending sub frames is all not identical.It should be noted that, each descending sub frame correspondence a sub-frame of uplink feed back, two different descending sub frames may feed back on same sub-frame of uplink, a plurality of sub-frame of uplink of the feedback subframe that in the embodiment of the present invention, base station selected correspondence is different, and to terminal, send MSG4 message on the sub-frame of uplink of selecting.The object of the transmission means that the embodiment of the present invention provides is not wait in UE uplink feedback information situation, downlink data is transmitted continuously, and meanwhile, for guaranteeing the identifiability of uplink feedback, some descending sub frame is unnecessary to be transmitted again.For instance, subframe numbers be 0 and subframe numbers uplink feedback subframe corresponding to descending sub frame that be 1 to be subframe numbers be 7 sub-frame of uplink, if the subframe that the subframe that is 0 at subframe numbers and subframe numbers are 1 is transmitted, when being fed back to ACK, the subframe error of transmission that base station None-identified subframe numbers is 0, be 1 subframe error of transmission or two the equal errors of transmission of subframe of subframe and subframe numbers; Therefore, the embodiment of the present invention only selects a descending sub frame to transmit in the descending sub frame in requisition for identical uplink feedback.Further, base station can also be in above-mentioned 4 the MSG4 message of the MAC of base station side layer buffer memory, again send the MSG4 message of buffer memory in order to base station when the MSG4 bust this.Simultaneously, base station can also start competition and solve transmit timing device corresponding to message, the timing time length of the transmit timing device that this competition solution message is corresponding is less than the timing time length of the competition solution timer of end side, i.e. the timing time length that this competition solves transmit timing device corresponding to message is less than 64ms.
Preferably, after step 22, if what described base station solved in competition that transmit timing device corresponding to message do not receive that described competition solves message after overtime replys ACK message, the described competition of described base station reduction transmission solves modulation and the coding strategy MCS grade of message, and on described a plurality of descending sub frames, uses the MCS grade after reducing to retransmit described competition solution message; Wherein, the timing time length that described competition solves transmit timing device corresponding to message is less than described competition and solves competition corresponding to message and solve timer.
During specific implementation, due to base station selected 4 descending sub frame correspondences that go out mutually different uplink feedback subframe, therefore, base station can receive respectively the ACK message for 4 different MSG4 message, if at least one ACK message is not received in base station after transmit timing device corresponding to competition solution message is overtime, base station thinks that now channel circumstance is not good, or MCS grade is not mated with current channel circumstance, therefore, base station reduces MCS grade automatically, and again transmits MSG4 message according to the MCS grade after reducing.
Visible, the embodiment of the present invention can be according to the matching degree of channel circumstance or MCS grade and current channel circumstance, and adjustment MCS grade has initiatively improved terminal and received the success rate of MSG4 message, thereby improved the success rate of the random access of terminal.
Preferably, after step 22, if described base station is after sending described competition solution message, receive the non-NACK of the replying message of described terminal feedback, and current time transmit timing device is not overtime, described base station reduces the MCS grade that the described competition of transmission solves message, and on described a plurality of descending sub frames, use the MCS grade after reducing to retransmit described competition solution message, if transmit timing device is overtime, base station releasing resource, this random access procedure failure; Wherein, the timing time length that described competition solves transmit timing device corresponding to message is less than described competition and solves competition corresponding to message and solve timer.
During specific implementation, due to base station selected 4 descending sub frame correspondences that go out mutually different uplink feedback subframe, therefore, base station can receive respectively the ACK message for 4 different MSG4 message.If it is not overtime to work as transmit timing device, and base station receives the NACK message of described terminal feedback, base station thinks that now channel circumstance is not good, or MCS grade is not mated with current channel circumstance, therefore, base station reduces MCS grade automatically, and again transmits MSG4 message according to the MCS grade after reducing.
Visible, the embodiment of the present invention can be according to the matching degree of channel circumstance or MCS grade and current channel circumstance, and adjustment MCS grade has initiatively improved terminal and received the success rate of MSG4 message, thereby improved the success rate of the random access of terminal.
Preferably, in above-mentioned steps, it is identical that each competition sending solves the HARQ sign of carrying in message, and the redundant version number of carrying is different.
During specific implementation, in the MSG4 message that the embodiment of the present invention sends in above-mentioned steps, carried identical HARQ identification information (HARQ ID), for representing that above MSG4 message is all from identical process; In the MSG4 message that the embodiment of the present invention sends in above-mentioned steps, carried different redundant version number (RV), for representing that terminal merges according to RV version number when receiving above-mentioned MSG4, produced and merge gain.
Further, the detection of ascending HARQ feedback is carried out in base station, in the feedback for transmitting on a plurality of descending sub frames, if once HARQ is fed back to ACK, base station thinks that UE correctly receives MSG4, and now flow process finishes, and base station empties whole MSG4 message of buffer memory in buffer memory Buffer.
Preferably, after above-mentioned steps 21, before step 22, can also comprise: base station determines whether to enable on a plurality of descending sub frames binds transmission to competition solution message; Described base station in step 22 sends competition to described terminal and solves message on a plurality of descending sub frames, can specifically comprise: if described base station is determined to enable on a plurality of descending sub frames, competition solution message is bound to transmission, described base station sends competition to described terminal and solves message on a plurality of descending sub frames.
During specific implementation, base station judges whether channel situation needs N binding transmission MSG4 of repetition, for instance, the embodiment of the present invention can utilize MSG3 message to calculate up path loss situation, and utilize channel heterogeneite to obtain downlink path loss situation, according to up path loss situation and downlink path loss situation, calculate descending received power, and judge whether to retransmit MSG4 according to up path loss situation and downlink path loss situation and descending received power; Or, the reception feedback of MSG4 is judged, for instance, if after MSG4 sends for the first time, do not receive the ACK of UE feedback, repeat to transmit 4 times MSG4 message continuously.When base station, determine to enable on a plurality of descending sub frames competition solution message is bound to transmission, described base station sends competition to described terminal and solves message on a plurality of descending sub frames.
Preferably, described determine whether to enable on a plurality of descending sub frames solves message to competition and binds transmission, comprise: according to current channel condition information or HARQ feedback, determine whether to enable on a plurality of descending sub frames competition solution message is bound to transmission.
Visible, the embodiment of the present invention has proposed a kind of method of not waiting for terminal feedback and send respectively competition solution message (MSG4) on a plurality of descending sub frames, wherein, after base station receives the message of scheduled transmission for the first time of terminal transmission, on a plurality of discontinuous descending sub frames, to terminal, send competition and solve message, discontinuous descending sub frame in the embodiment of the present invention refers to be not in sequence number continuously, but a plurality of descending sub frames corresponding respectively during different feedback subframes (corresponding HARQ feedback can correctly be identified by base station) bind transmission.The method providing according to the embodiment of the present invention, within the time of a radio frames (10ms), base station can complete the transfer of data of the different RV versions of MSG4 of N time, thereby has reduced the time delay of random access; Further, the embodiment of the present invention can also automatically reduce MCS grade of transmission when channel circumstance is not good, thereby has improved the success rate of random access.
Technical conceive based on identical, the embodiment of the present invention also provides a kind of base station, and as shown in Figure 3, this base station comprises:
Receiving element 31, the message of scheduled transmission for the first time of the radio resource control RRC process of establishing sending for receiving terminal;
Transmitting element 32, for when for the described message of scheduled transmission for the first time, on a plurality of descending sub frames, to described terminal, send competition and solve message, the feedback subframe of the mixed automatic retransfer request HARQ that at least two adjacent sub-frame in described a plurality of descending sub frames are corresponding is not identical.
Preferably, this base station also comprises: described competition solves transmit timing device corresponding to message; Described competition solves transmit timing device corresponding to message and to described terminal, sends when competition solves message and start at every turn on described a plurality of descending sub frames; Described receiving element 31 also for, what receive that described competition solves message replys ACK message; This base station also comprises: MCS level adjustment unit and described competition solve transmit timing device corresponding to message; Described MCS level adjustment unit, for after transmit timing device corresponding to described competition solution message is overtime, when described receiving element 31 do not receive described competition solve message reply ACK message time, reduce modulation and coding strategy MCS grade that the described competition of transmission solves message; Described transmitting element 32 also for, the MCS grade after use reducing on described a plurality of descending sub frames retransmits described competition and solves message; Wherein, the timing time length that described competition solves transmit timing device corresponding to message is less than described competition and solves the timing time length that competition corresponding to message solves timer.
Preferably, this base station also comprises: described competition solves transmit timing device corresponding to message; Described competition solves transmit timing device corresponding to message and to described terminal, sends when competition solves message and start at every turn on described a plurality of descending sub frames; Described receiving element 31 also for, receive the non-NACK of the replying message of described terminal feedback; This base station also comprises: MCS level adjustment unit and described competition solve transmit timing device corresponding to message; Described MCS level adjustment unit, for receive the non-NACK of the replying message of described terminal feedback at described receiving element 31, and it is not overtime described in current time, to compete transmit timing device corresponding to solution message, reduces the MCS grade that the described competition of transmission solves message; Described transmitting element 32 also for, the MCS grade after use reducing on described a plurality of descending sub frames retransmits described competition and solves message; Wherein, the timing time length that described competition solves transmit timing device corresponding to message is less than described competition and solves the timing time length that competition corresponding to message solves timer.
Preferably, it is identical that the described competition sending on a plurality of descending sub frames solves the HARQ sign of carrying in message, and it is different that the described competition sending on a plurality of descending sub frames solves the redundancy versions sign of carrying in message.
Preferably, this base station also comprises: decision unit, for receive the message of scheduled transmission for the first time that terminal sends at described receiving element 31 after, described transmitting element 32 sends before competition solves message to described terminal on a plurality of descending sub frames, determine whether to enable on a plurality of descending sub frames, competition to be solved to message and bind transmission; Described transmitting element 32 specifically for, at described decision unit, determine and to enable on a plurality of descending sub frames when competition is solved message and bind transmission, on a plurality of descending sub frames, to described terminal, send competition solution message.
Preferably, described decision unit specifically for, according to current channel condition information or HARQ feedback, determine whether to enable on a plurality of descending sub frames and competition to be solved to message bind transmission.
The present invention is with reference to describing according to flow chart and/or the block diagram of the method for the embodiment of the present invention, equipment (system) and computer program.Should understand can be in computer program instructions realization flow figure and/or block diagram each flow process and/or the flow process in square frame and flow chart and/or block diagram and/or the combination of square frame.The processor of these computer program instructions to all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device can be provided, make the function of appointment in a flow process in can realization flow figure of instruction that the processor by this computer or other programmable data processing device carries out or a plurality of flow process and/or square frame of block diagram or a plurality of square frame.
These computer program instructions also can be stored in energy vectoring computer or the computer-readable memory of other programmable data processing device with ad hoc fashion work, the instruction that makes to be stored in this computer-readable memory produces the manufacture that comprises command device, and this command device is realized the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, make to carry out sequence of operations step to produce computer implemented processing on computer or other programmable devices, thereby the instruction of carrying out is provided for realizing the step of the function of appointment in flow process of flow chart or a square frame of a plurality of flow process and/or block diagram or a plurality of square frame on computer or other programmable devices.
Although described the preferred embodiments of the present invention, once those skilled in the art obtain the basic creative concept of cicada, can make other change and modification to these embodiment.So claims are intended to all changes and the modification that are interpreted as comprising preferred embodiment and fall into the scope of the invention.
Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if within of the present invention these are revised and modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.
Claims (12)
1. compete a sending method that solves message, be applied to random access procedure, it is characterized in that, comprising:
The message of scheduled transmission for the first time in the radio resource control RRC process of establishing that base station receiving terminal sends;
Described base station is for the described message of scheduled transmission for the first time, sends competition solve message on a plurality of descending sub frames to described terminal, and the feedback subframe of the mixed automatic retransfer request HARQ that at least two adjacent sub-frame in described a plurality of descending sub frames are corresponding is not identical.
2. the method for claim 1, is characterized in that, described method also comprises:
When described base station sends competition solution message to described terminal on described a plurality of descending sub frames at every turn, start described competition and solve transmit timing device corresponding to message;
If what described base station solved in described competition that transmit timing device corresponding to message do not receive that described competition solves message after overtime replys ACK message, the described competition of described base station reduction transmission solves modulation and the coding strategy MCS grade of message, and on described a plurality of descending sub frames, uses the MCS grade after reducing to retransmit described competition solution message; Wherein, the timing time length that described competition solves transmit timing device corresponding to message is less than described competition and solves the timing time length that competition corresponding to message solves timer.
3. the method for claim 1, is characterized in that, described method also comprises:
When described base station sends competition solution message to described terminal on described a plurality of descending sub frames at every turn, start described competition and solve transmit timing device corresponding to message;
If described base station is after sending described competition solution message, receive the non-NACK of the replying message of described terminal feedback, and it is not overtime that described in current time, competition solves transmit timing device corresponding to message, the described competition of described base station reduction transmission solves the MCS grade of message, and on described a plurality of descending sub frames, uses the MCS grade after reducing to retransmit described competition solution message; Wherein, the timing time length that described competition solves transmit timing device corresponding to message is less than described competition and solves the timing time length that competition corresponding to message solves timer.
4. the method as described in any one in claim 1-3, it is characterized in that, it is identical that the described competition sending on a plurality of descending sub frames solves the HARQ sign of carrying in message, and it is different that the described competition sending on a plurality of descending sub frames solves the redundancy versions sign of carrying in message.
5. the method as described in any one in claim 1-4, is characterized in that, after described base station receives the message of scheduled transmission for the first time that terminal sends, on a plurality of descending sub frames, to described terminal, sends before competition solves message, also comprises:
Determine whether to enable on a plurality of descending sub frames competition solution message is bound to transmission;
Described base station sends competition to described terminal and solves message on a plurality of descending sub frames, is specially:
If described base station is determined to enable on a plurality of descending sub frames, competition solution message is bound to transmission, described base station sends competition to described terminal and solves message on a plurality of descending sub frames.
6. method as claimed in claim 5, is characterized in that, described in determine whether to enable on a plurality of descending sub frames and competition to be solved to message bind transmission, comprising:
According to current channel condition information or HARQ feedback, determine whether to enable on a plurality of descending sub frames competition solution message is bound to transmission.
7. a base station, is characterized in that, comprising:
Receiving element, the message of scheduled transmission for the first time of the radio resource control RRC process of establishing sending for receiving terminal;
Transmitting element, for when for the described message of scheduled transmission for the first time, on a plurality of descending sub frames, to described terminal, send competition and solve message, the feedback subframe of the mixed automatic retransfer request HARQ that at least two adjacent sub-frame in described a plurality of descending sub frames are corresponding is not identical.
8. base station as claimed in claim 7, is characterized in that, this base station also comprises: described competition solves transmit timing device corresponding to message; Described competition solves transmit timing device corresponding to message and to described terminal, sends when competition solves message and start at every turn on described a plurality of descending sub frames;
Described receiving element also for, what receive that described competition solves message replys ACK message;
This base station also comprises: MCS level adjustment unit and described competition solve transmit timing device corresponding to message;
Described MCS level adjustment unit, for after transmit timing device corresponding to described competition solution message is overtime, when described receiving element do not receive described competition solve message reply ACK message time, reduce modulation and coding strategy MCS grade that the described competition of transmission solves message;
Described transmitting element also for, the MCS grade after use reducing on described a plurality of descending sub frames retransmits described competition and solves message;
Wherein, the timing time length that described competition solves transmit timing device corresponding to message is less than described competition and solves the timing time length that competition corresponding to message solves timer.
9. base station as claimed in claim 7, is characterized in that, this base station also comprises: described competition solves transmit timing device corresponding to message; Described competition solves transmit timing device corresponding to message and to described terminal, sends when competition solves message and start at every turn on described a plurality of descending sub frames;
Described receiving element also for, receive the non-NACK of the replying message of described terminal feedback;
This base station also comprises: MCS level adjustment unit and described competition solve transmit timing device corresponding to message;
Described MCS level adjustment unit, for receive the non-NACK of the replying message of described terminal feedback at described receiving element, and it is not overtime described in current time, to compete transmit timing device corresponding to solution message, reduces the MCS grade that the described competition of transmission solves message;
Described transmitting element also for, the MCS grade after use reducing on described a plurality of descending sub frames retransmits described competition and solves message;
Wherein, the timing time length that described competition solves transmit timing device corresponding to message is less than described competition and solves the timing time length that competition corresponding to message solves timer.
10. base station as claimed in any one of claims 7-9, it is characterized in that, it is identical that the described competition sending on a plurality of descending sub frames solves the HARQ sign of carrying in message, and it is different that the described competition sending on a plurality of descending sub frames solves the redundancy versions sign of carrying in message.
11. base stations as claimed in any one of claims 7-9, is characterized in that, this base station also comprises:
Decision unit, for receive the message of scheduled transmission for the first time that terminal sends at described receiving element after, described transmitting element sends before competition solves message to described terminal on a plurality of descending sub frames, determine whether to enable on a plurality of descending sub frames, competition to be solved to message and bind transmission;
Described transmitting element specifically for, at described decision unit, determine and to enable on a plurality of descending sub frames when competition is solved message and bind transmission, on a plurality of descending sub frames, to described terminal, send competition solution message.
12. base stations as claimed in claim 11, is characterized in that, described decision unit specifically for,
According to current channel condition information or HARQ feedback, determine whether to enable on a plurality of descending sub frames competition solution message is bound to transmission.
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| CN201410425804.6A CN104159319A (en) | 2014-08-26 | 2014-08-26 | Method of transmitting competition solution information and base station |
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Application publication date: 20141119 |