WO2015062090A1 - 一种随机接入方法及相关装置 - Google Patents
一种随机接入方法及相关装置 Download PDFInfo
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- WO2015062090A1 WO2015062090A1 PCT/CN2013/086458 CN2013086458W WO2015062090A1 WO 2015062090 A1 WO2015062090 A1 WO 2015062090A1 CN 2013086458 W CN2013086458 W CN 2013086458W WO 2015062090 A1 WO2015062090 A1 WO 2015062090A1
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- user equipment
- downlink
- base station
- uplink
- random access
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- 238000000034 method Methods 0.000 title claims abstract description 119
- 230000011664 signaling Effects 0.000 claims abstract description 215
- 108091006146 Channels Proteins 0.000 description 130
- 230000004044 response Effects 0.000 description 24
- 238000010586 diagram Methods 0.000 description 21
- 230000006870 function Effects 0.000 description 17
- 230000008569 process Effects 0.000 description 17
- 230000008859 change Effects 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 5
- 238000004891 communication Methods 0.000 description 5
- 230000002860 competitive effect Effects 0.000 description 4
- 101100274486 Mus musculus Cited2 gene Proteins 0.000 description 3
- 101150096622 Smr2 gene Proteins 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000001960 triggered effect Effects 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000036963 noncompetitive effect Effects 0.000 description 2
- 238000013475 authorization Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005309 stochastic process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- 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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/14—Two-way operation using the same type of signal, i.e. duplex
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/04—Scheduled access
- H04W74/06—Scheduled access using polling
-
- 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
- H04W74/0838—Random access procedures, e.g. with 4-step access using contention-free random access [CFRA]
Definitions
- the present invention relates to the field of communications technologies, and in particular, to a random access method and related apparatus. Background technique
- the Long Term Evolution (LTE) system supports Time Division Duplexing (TDD), that is, Uplink (UL) and Downlink (DL) use different time slots of the same frequency.
- TDD Time Division Duplexing
- UL Uplink
- DL Downlink
- the LTE TDD system can be configured with the uplink and downlink (Uplink-Downlink Configuration) in a semi-static configuration to meet different uplink and downlink asymmetric service requirements.
- the uplink-downlink ratio used is semi-statically configured.
- the fastest 640 milliseconds (ms) changes the ratio. This will cause the current uplink-downlink ratio to not match the instantaneous uplink and downlink traffic, which is not effective.
- the use of resources, especially for cells with a small number of user devices, is particularly serious. Therefore, in order to effectively improve resource utilization, in the new version of the system, the TDD uplink and downlink ratio can be dynamically changed, for example, 10ms to 40ms to change the uplink and downlink ratio, and the base station (eNodeB, eNB) passes the traditional physical downlink control channel (Physical Downlink Control).
- the physical layer downlink control channel refers to the traditional physical downlink control channel. Or enhanced physical downlink control channel (ePDCCH), the physical layer downlink control channel can be written as (e) PDCCH. Since (e) PDCCH is relatively dynamic, thereby dynamically changing the uplink and downlink ratio of TDD .
- the user equipment that supports the TDD uplink-downlink ratio dynamic change function is called the further enhancement of the LTE TDD for the downlink uplink interference management and service adaptation (Frther Enhancements to LTE TDD for DL-UL Interference Management and Traffic Adaptation, elMTA) user equipment. For the purpose of this article, this article is called elMTA user equipment.
- the non-elMTA user equipment includes at least the user equipment of the previous version of the 3rd Generation Partnership Project Release 12 (3GPP R12) (User Equipment, UE) and 3GPP R12 without eMTTA function and user equipment of 3GPP R12 and later versions, when the elMTA user equipment and the non-elMTA user equipment are in the same random access channel
- 3GPP R12 3rd Generation Partnership Project Release 12
- UE User Equipment
- 3GPP R12 3rd Generation Partnership Project Release 12
- the existing protocol specifies that a random access response is received in the subframe n, and then is sent on the first uplink subframe n+kl.
- the elMTA user equipment determines n+k1 according to the TDD uplink-downlink ratio notified in the (e)PDCCH, or determines the subframe in which the Msg3 is transmitted.
- the non-elMTA user equipment determines n+k1 according to the TDD uplink-downlink ratio notified in system information block1 (SIB1), or determines the subframe in which Msg3 is transmitted, and (e) the TDD notified on the PDCCH.
- SIB1 system information block1
- the uplink-downlink ratio and the TDD uplink-downlink ratio notified in SIB1 may be different.
- the base station Since the base station does not know whether the user equipment that sent the preamble is an elMTA user equipment or a non-elMTA user equipment before receiving the RACH Msg3 correctly, the base station also It is not known which ratio the user equipment will determine n+kl or transmit the uplink subframe of Msg3. Therefore, the non-elMTA user equipment and the eMTTA user equipment and the base station have inconsistent understandings of the uplink subframe for transmitting the Msg3, and then the base station may not receive the corresponding Msg3.
- the embodiment of the present invention provides a random access method and related device, which can enable a base station to accurately receive a random access message 3 sent by a non-elMTA user equipment and an elMTA user equipment.
- a random access method including:
- the first signaling includes a first time division duplex TDD uplink and downlink ratio
- the second signaling includes a second TDD uplink and downlink ratio
- the elMTA user equipment is configured according to the first TDD uplink and downlink ratio Determining an uplink subframe in which the random access message 3 is sent; The elMTA user equipment sends the random access message 3 to the base station in the determined uplink subframe.
- the method before the sending, by the elMTA user equipment, the random access message 3 to the base station, in the determined uplink subframe, the method further includes:
- the elMTA user equipment sends a pilot preamble to the base station on the uplink subframe set in the first TDD uplink and downlink ratio.
- the eMTTA user equipment sends a pilot preamble to an uplink subframe set in the first TDD uplink-downlink ratio Before the base station, the method further includes:
- the elMTA user equipment monitors a physical downlink control channel command PDCCH Order or an enhanced physical downlink control channel command ePDCCH Order sent by the base station; or
- the elMTA user equipment monitors the PDCCH Order or ePDCCH Order sent by the base station.
- the eMTTA user equipment is in the determined uplink Before the sending the random access message 3 to the base station in a subframe, the method further includes:
- the eMTTA user equipment listens to the radio network temporary identifier RA-RNTI that is sent by the base station through the PDCCH or the ePDCCH, and adds 4 Downstream control information DCI.
- the method further includes:
- the elMTA user equipment receives the contention resolution message sent by the base station on the downlink subframe set in the second TDD uplink and downlink ratio;
- the elMTA user equipment receives the contention resolution message sent by the base station on the downlink subframe set in the uplink and downlink ratio of the first TDD.
- the first signaling is system information block 1 .
- a random access method including:
- the first signaling includes a time division duplex TDD uplink and downlink ratio
- the second signaling includes a second TDD uplink and downlink ratio
- the method before the receiving the random access message 3 sent by the eMTTA user equipment according to the uplink subframe determined by the first TDD uplink and downlink ratio, the method further includes:
- the receiving the eMTTA user equipment After the random access message 3 sent in the first uplink subframe determined by the first TDD uplink and downlink ratio, the method further includes:
- an elMTA user equipment including:
- a receiving unit configured to receive first signaling that is sent by the base station to the eMTTA user equipment by using the physical downlink shared channel PDSCH, and send the base station to the eMTTA user equipment by using a physical downlink control channel PDCCH or an enhanced physical downlink control channel (ePDCCH)
- the second signaling, the first signaling includes a first time division duplex TDD uplink and downlink ratio, and the second signaling includes a second TDD uplink and downlink ratio;
- a determining unit configured to determine, according to the first TDD uplink-downlink ratio, an uplink subframe that sends the random access message 3;
- a sending unit configured to send the random access message 3 to the base station on the determined uplink subframe.
- the sending unit is further configured to send a pilot preamble to the base station in an uplink subframe set in the first TDD uplink and downlink ratio.
- the receiving unit is further configured to: on a downlink subframe set in the second TDD uplink and downlink ratio, the monitoring station a physical downlink control channel command PDCCH Order or an enhanced physical downlink control channel command ePDCCH Order sent by the base station; or
- the receiving unit is further configured to monitor, on the downlink subframe set in the first TDD uplink and downlink ratio, the PDCCH Order or ePDCCH Order sent by the base station.
- the receiving unit is further configured to be used in the foregoing On the downlink subframe set in the TDD uplink-downlink ratio, the downlink control information DCI scrambled by the base station through the PDCCH or the ePDCCH and using the random access radio network temporary identifier RA-RNTI is monitored.
- the receiving unit is further configured to use, in the second TDD, the downlink subframe set in the uplink and downlink ratio Receiving a contention resolution message sent by the base station; or
- the receiving unit is further configured to receive, on the downlink subframe set in the uplink and downlink ratio of the first TDD, the contention resolution message sent by the base station.
- the first signaling is system information block 1.
- a base station including:
- a sending unit configured to send the first signaling to the elMTA user equipment by using the physical shared channel PDSCH, and send the second signaling to the elMTA user equipment by using a physical downlink control channel PDCCH or an enhanced physical downlink control channel ePDCCH, where
- the first signaling includes a first time division duplex TDD uplink and downlink ratio
- the second signaling includes a second TDD uplink and downlink ratio
- the receiving unit is configured to receive the random access message 3 sent by the elMTA user equipment on the uplink subframe determined according to the first TDD uplink and downlink ratio.
- the sending unit is further configured to send, by using the downlink downlink subframe set in the second TDD uplink and downlink ratio, a physical downlink control channel command PDCCH Order to the elMTA user equipment or Enhanced physical downlink control channel command ePDCCH Order; or,
- the sending unit is further configured to send the PDCCH Order or ePDCCH Order to the enabled elMTA user equipment on the downlink subframe set in the first TDD uplink and downlink ratio.
- the sending unit is further configured to use, in the first TDD, the downlink subframe set in the uplink and downlink ratio And transmitting, by using the PDCCH or the ePDCCH, the downlink control information DCI that is scrambled by the radio network temporary identifier RA-RNTI of the random access to the eMTTA user equipment.
- the sending unit is further configured to be used in the foregoing Sending a contention resolution message to the user equipment that enables the eLMTA function on the downlink subframe set in the TDD uplink-downlink ratio;
- the sending unit is further configured to: on the downlink subframe set in the uplink and downlink ratio of the first TDD, Sending the contention resolution message to the user equipment that enables the eLMTA function.
- the first signaling is system information block 1.
- an elMTA user equipment is provided, including
- a receiver configured to receive first signaling that is sent by the base station to the eMTTA user equipment by using the physical downlink shared channel PDSCH, and send the base station to the eMTTA user equipment by using a physical downlink control channel PDCCH or an enhanced physical downlink control channel (ePDCCH)
- the second signaling where the first signaling includes a first time division duplex TDD uplink and downlink ratio
- a processor configured to determine, according to the first TDD uplink-downlink ratio, an uplink subframe that sends a random access message 3;
- a transmitter configured to send the random access message to the base station on the determined uplink subframe
- the transmitter before the sending, by the transmitter, the step of sending the random access message 3 to the base station in the determined uplink subframe, the transmitter is further configured to perform the following steps. :
- the sending by the sending, the transmitting the pilot on the uplink subframe set in the first TDD uplink and downlink ratio Before the step of preamble to the base station, the receiver is further configured to perform the following steps:
- the transmitter performs the determining The receiver before the step of transmitting the random access message 3 to the base station on an uplink subframe Also used to perform the following steps:
- the downlink control information DCI that is scrambled by the radio network temporary identifier RA-RNTI that is sent by the base station by using the PDCCH or the ePDCCH.
- the receiver is further configured to perform the following steps:
- a base station including:
- a transmitter configured to send, by using a physical shared channel, the PDSCH, the first signaling to the elMTA user equipment, and send, by using the physical downlink control channel PDCCH or the enhanced physical downlink control channel ePDCCH, the second signaling to the elMTA user equipment, where
- the signaling includes a first time division duplex TDD uplink and downlink ratio, and the second signaling includes a second TDD uplink and downlink ratio;
- a receiver configured to receive the random access message 3 sent by the elMTA user equipment on an uplink subframe determined according to the first TDD uplink-downlink ratio.
- the receiver performs the step of receiving the random access message 3 sent by the eMTTA user equipment on an uplink subframe determined according to the first TDD uplink-downlink ratio.
- the transmitter is further configured to perform the following steps:
- the PDCCH Order or ePDCCH Order is sent.
- the receiving performing the receiving the eMTTA user equipment is based on the first TDD uplink and downlink ratio
- the transmitter is further configured to perform the following steps:
- the receiver performs the receiving the eMTTA After the step of the random access message 3 sent by the user equipment on the first uplink subframe determined according to the first TDD uplink-downlink ratio, the transmitter is further configured to perform the following steps:
- the first signaling is system information block 1.
- the non-elMTA user equipment and the elMTA user equipment are received by using the signaling method of the physical downlink shared channel by using the non-elMTA user equipment and the elMTA user equipment. Random access message 3 sent. DRAWINGS
- Figure lb is a flow chart of a random access procedure in a non-contention mode
- FIG. 2 is a flowchart of a first embodiment of a random access method according to the present invention
- FIG. 3 is a flowchart of a second embodiment of a random access method according to the present invention.
- FIG. 4 is a flowchart of a third embodiment of a random access method according to the present invention.
- FIG. 5 is a flowchart of a fourth embodiment of a random access method according to the present invention.
- FIG. 6 is a flowchart of a fifth embodiment of a random access method according to the present invention.
- FIG. 7 is a flowchart of a sixth embodiment of a random access method according to the present invention.
- FIG. 8 is a flowchart of a seventh embodiment of a random access method according to the present invention.
- FIG. 9 is a flowchart of an eighth embodiment of a random access method according to the present invention.
- FIG. 10 is a schematic structural diagram of a first embodiment of a user equipment according to the present invention.
- FIG. 11 is a schematic structural diagram of a second embodiment of a user equipment according to the present invention.
- FIG. 12 is a schematic structural diagram of a third embodiment of a user equipment according to the present invention.
- FIG. 13 is a schematic structural diagram of a fourth embodiment of a user equipment according to the present invention.
- FIG. 14 is a schematic structural diagram of a first embodiment of a base station according to the present invention.
- FIG. 15 is a schematic structural diagram of a second embodiment of a base station according to the present invention.
- FIG. 16 is a schematic structural diagram of a third embodiment of a base station according to the present invention.
- FIG. 17 is a schematic structural diagram of a fourth embodiment of a base station according to the present invention.
- FIG. 18 is a schematic structural diagram of a fifth embodiment of a user equipment according to the present invention.
- FIG. 19 is a schematic structural diagram of an embodiment of a base station device according to the present invention. detailed description
- the random access procedure of the LTE TDD system includes a stochastic process of a competitive mode and a random process of a non-competitive mode.
- the random access process of the competitive mode is as shown in FIG. 1a, and the schematic diagram of the random access process of the non-competitive mode is shown in FIG. Lb shows.
- the contention random access procedure includes that the UE sends a random access message 1 (which can be written as Msgl), that is, a preamble. After the eNodeB correctly receives the preamble, it sends a random access message 2 (which can be written as Msg2), that is, a random access response (RAR), and the random access response includes: time advance, random access.
- a random access response grant (indicating the transmission information of the subsequent Msg3), the assigned temporary user identifier (temporary C-RNTI).
- the UE After the UE correctly receives the Msg2, the UE sends the Msg3 on the Physical Uplink Share Channel (PUSCH) indicated by the random access response authorization in the Msg2.
- the Msg3 is an RRC connection request.
- the random access procedure message 3 initiated after the radio link fails may be an RRC connection reestablishment request, or may be a medium access control control element (MAC CE)
- the eNB may return a random access message 4 (memory Msg4) on the physical downlink shared channel (Physical Downlink Share Channel, PDSCH) after receiving the Msg3 correctly, and the access message 4 may be Conflict detection messages, etc.
- the non-contention random access process does not have a message 3 and a contention resolution message.
- the non-contention random access process includes Random access message 0 (Msg0), Msg0 may be a downlink control channel command ((e) PDCCH order), or may be a handover command, and the (e) PDCCH order includes a preamble sequence ⁇ 1 J number and the like.
- Msg0 may be a downlink control channel command ((e) PDCCH order), or may be a handover command
- the (e) PDCCH order includes a preamble sequence ⁇ 1 J number and the like.
- Step S101 The elMTA user equipment receives the first signaling that is sent by the base station to the eMTTA user equipment by using the physical downlink shared channel (PDSCH), and sends the base station to the eMTTA user by using a physical downlink control channel PDCCH or an enhanced physical downlink control channel ePDCCH.
- the second signaling of the device where the first signaling includes a first time division duplex TDD uplink and downlink ratio, and the second signaling includes a second TDD uplink and downlink ratio.
- the first signaling sent by the base station may be received through the PDSCH, and the first signaling may be SIB1.
- the first TDD uplink and downlink ratio is included in the first signaling, and the first TDD uplink and downlink ratio is semi-statically configured.
- the second signaling sent by the base station can also be received through the (e)PDCCH.
- the second TDD uplink and downlink ratio is included in the second signaling, and the second TDD uplink and downlink ratio can be dynamically changed, for example, 10ms to 40ms to change the uplink and downlink ratio.
- the subframe type and ratio rule included in the first TDD uplink-downlink ratio and the second TDD uplink-downlink ratio are still the uplink-downlink ratios as shown in Table 1.
- Step S102 The elMTA user equipment determines to send an uplink subframe of the random access message 3 according to the first TDD uplink-downlink ratio.
- Msg3 is sent according to the first TDD uplink and downlink ratio.
- the elMTA user does not determine n+kl according to the TDD uplink-downlink ratio notified in the (e)PDCCH, or determines the subframe in which the Msg3 is transmitted, but determines the n+kl according to the TDD ratio notified in the SIB1. Or to determine the subframe to send Msg3.
- Step S103 The elMTA user equipment sends the random access message 3 to the base station in the determined uplink subframe.
- the elMTA user equipment sends Msg3 to the base station on the determined uplink subframe.
- the base station can know that the non-elMTA user equipment and the eMTTA user equipment uniformly use the uplink subframe determined according to the uplink and downlink ratio notified by the SIB1 to send the Msg3, so that the base station can accurately receive the non-elMTA user.
- the device and the Msg3 sent by the elMTA user device maintain the R12 Backward compatibility of non-elMTA user devices prior to release.
- the non-elMTA user equipment and the eMTTA user equipment are uniformly used to transmit the random uplink subframe determined by the uplink and downlink ratios included in the signaling sent by the physical downlink shared channel.
- the message 3 is accessed so that the base station can accurately receive the random access message 3 sent by the non-elMTA user equipment and the elMTA user equipment.
- FIG. 3 is a flow chart of a second embodiment of a random access method according to the present invention. As shown in Figure 3, the method includes the following steps:
- Step S201 The elMTA user equipment receives the first signaling that is sent by the base station to the eMTTA user equipment by using the physical downlink shared channel PDSCH, and sends the base station to the eMTTA user by using the physical downlink control channel PDCCH or the enhanced physical downlink control channel ePDCCH.
- the second signaling of the device where the first signaling includes a first time division duplex TDD uplink and downlink ratio, and the second signaling includes a second TDD uplink and downlink ratio.
- Step S202 On the downlink subframe set in the second TDD uplink and downlink ratio, the elMTA user equipment listens to the physical downlink control channel command PDCCH Order or the enhanced physical downlink control channel command ePDCCH Order sent by the base station.
- the UE may listen to (e) the PDCCH Order according to the TDD uplink-downlink ratio notified in the signaling sent by the (e) PDCCH, specifically, the downlink sub-frame in the TDD ratio of the signaling notified by the (e) PDCCH.
- a frame or special subframe is used to listen to (e) PDCCH order.
- the UE since the downlink subframes available in the TDD ratio notified in the signaling sent by the (e) PDCCH are more than the downlink subframes available in the TDD ratio notified in the SIB 1, the UE can have more opportunities to receive.
- (e) PDCCH Order which reduces random access delay and improves base station scheduling flexibility.
- the UE may also monitor the (e)PDCCH order sent by the base station according to the TDD ratio notified in the message sent through the PDSCH, and the message may be SIBL.
- the downlink subframe set may include a special subframe.
- the UE may receive other downlink data according to the downlink subframe type. This case is adapted to the other messages transmitted by the base station listening to the special subframe as described below.
- the base station Since (e) the PDCCH order is sent by the base station to the UE in the connected state, it is triggered to perform random access, Therefore, the base station generally knows whether the UE is an eMTTA user, and whether the (TD) uplink and downlink ratios notified in the signaling sent by the PDCCH are used when the UE is an eMTTA user.
- Step S203 The elMTA user equipment sends a pilot preamble to the base station on the uplink subframe set in the first TDD uplink-downlink ratio.
- the base station does not know that the preamble is a non-elMTA user equipment or an elMTA user equipment, and the preamble is transmitted by using the uplink subframe in the TDD uplink and downlink ratio notified by the SIB1 to ensure that the base station accurately receives the preamble sent by the user equipment.
- the (e)PDCCH order carries the preamble sequence number.
- the existing protocol specifies that: the user receives the (e)PDCCH order in the subframe n, then the n+k2 subframe.
- step S202 is not necessarily performed before step S203 is performed, and the random access procedure may also be triggered by the user equipment itself.
- the preamble or the physical random access channel (PRACH) resource used may be a preamble or a PRACH resource that can be used by the UE in the prior art.
- the base station only It is not clear whether the UE is an eMTTA UE through the PRACH resource, and whether the UE performing the contention random access procedure is an eIMTA UE can be distinguished only by the preamble.
- the transmitted preamble or the used PRACH resource may be a preamble or PRACH resource that the eMTTA UE can use, and the base station can perform the contention random access process only by using the PRACH resource or the preamble. Whether the UE is an elMTA UE.
- the elMTA UE may use a preamble or a PRACH resource that cannot be used by other UEs, or may be a new preamble or PRACH resource, or reserve a part of the preamble in the original preamble set.
- the specific method may pass the system before step 203.
- the broadcast message, dedicated RRC message or physical layer signaling, MAC layer signaling, etc. are configured to the elMTA UE.
- the advantage of this is that the base station can identify the elMTA UE earlier, thereby reducing the random access delay and improving the scheduling flexibility of the base station.
- Step S204 On the downlink subframe set in the uplink and downlink ratio of the first TDD, the elMTA user equipment listens to the radio network temporary identifier RA-RNTI that uses the random access and is sent by the base station by using the PDCCH or the ePDCCH.
- the downlink subframe or special subframe corresponding to the TDD ratio of the SIB1 notification monitors the DCI scrambled by the RA-RNTI to ensure that all UEs can receive correctly.
- the eMTTA UE can use the preamble or PRACH resource that cannot be used by other UEs.
- the base station can know whether the UE is It is the elMTA UE, and whether the TDD uplink and downlink ratio notified in the signaling sent by the (e)PDCCH is adopted when the UE is the elMTA user.
- the elMTA UE may use the preamble or PRACH resource that other UEs cannot use, and step S204 may be replaced with the second TDD.
- the downlink control information DCI scrambled by the base station through the (e)PDCCH and using the random access radio network temporary identifier RA-RNTI is monitored.
- the UE may have more opportunities because the downlink subframes available in the TDD uplink-downlink ratio notified in the signaling sent by the (e)PDCCH are more than the downlink subframes available in the TDD ratio notified in the SIB.
- the eMTTA UE may use the preamble or the PRACH resource that cannot be used by other UEs, and may also receive the DCI according to the original step S204. .
- steps S205 to S207 do not exist.
- Step S205 The elMTA user equipment determines to send an uplink subframe of the random access message 3 according to the first TDD uplink-downlink ratio.
- Step S206 The elMTA user equipment sends the random access message 3 to the base station in the determined uplink subframe.
- step S205 and step S206 are the same as that of step S102 and step S103 of the foregoing embodiment, and details are not described herein again.
- Step S207 The elMTA user equipment receives the contention resolution message sent by the base station on the downlink subframe set in the second TDD uplink and downlink ratio.
- the base station After the base station receives the random access message 3 sent by the UE, it has already identified whether the UE is an elMTA user equipment or a non-elMTA user equipment, and whether the notification in the signaling sent by the (e)PDCCH is used when the UE is an eMTTA user. TDD uplink and downlink ratio, so it is preferred that the UE is based on (e) The TDD uplink and downlink ratio notified in the signaling sent by the PDCCH is used to monitor the contention resolution message.
- the UE may have more opportunities. To receive the contention resolution message, reduce the random access delay, and improve the scheduling flexibility of the base station.
- the UE may also perform the random access method according to the embodiment of the present invention by using the TDD uplink-downlink ratio notified by the SIB1, and the non-elMTA user equipment and the elMTA user equipment are uniformly used by the physics.
- the uplink subframe determined by the uplink and downlink ratios included in the signaling sent by the downlink shared channel receives and sends each message in the random access procedure, so that the base station can accurately receive the random transmission by the non-elMTA user equipment and the elMTA user equipment.
- the access message also reduces the power overhead and uplink interference caused by the eMTTA user equipment to determine the random access message 3 transmission time and the random access message 3 according to the second TDD uplink-downlink ratio; and can reduce the random access time. Delay, improve base station scheduling flexibility.
- FIG. 4 is a flow chart of a third embodiment of a random access method according to the present invention. As shown in Figure 4, the method includes the following steps:
- Step S301 Send the first signaling to the elMTA user equipment by using the physical shared channel PDSCH, and send the second signaling to the elMTA user equipment by using the physical downlink control channel PDCCH or the enhanced physical downlink control channel ePDCCH, where the first signaling
- the first time division duplex TDD uplink and downlink ratio is included, and the second signaling includes a second TDD uplink and downlink ratio.
- the base station Before the base station correctly receives the random access message 3, the base station does not know that each message before the random access message 3 is sent is an eMTTA user equipment or a non-elMTA user equipment, but the base station can send the first message to the elMTA user equipment and the non-elMTA user equipment through the PDSCH.
- the first signaling may be that the SIBL includes a first TDD uplink and downlink ratio in the first signaling, and the first TDD uplink and downlink ratio is semi-statically configured.
- the second signaling sent by the base station can also be received through the (e)PDCCH. Therefore, the base station sends the second signaling to the elMTA user equipment through the (e)PDCCH.
- the second TDD uplink and downlink ratio is included in the second signaling, and the second TDD uplink and downlink ratio can be dynamically changed, for example, 10ms to 40ms to change the uplink and downlink ratio.
- Step S302 Receive a random access message 3 sent by the eMTTA user equipment on an uplink subframe determined according to the first TDD uplink-downlink ratio.
- Msg3 is sent according to the first TDD uplink and downlink ratio.
- the elMTA user does not determine the subframe in which the Msg3 is transmitted according to the TDD uplink-downlink ratio notified in the (e) PDCCH, but determines the subframe in which the Msg3 is transmitted according to the TDD ratio notified in the SIB1. Therefore, for the non-elMTA user equipment or the elMTA user equipment, the base station can accurately receive the Msg3 they send on the uplink subframe determined according to the first TDD uplink-downlink ratio.
- the base station knows that the non-elMTA user equipment and the elMTA user equipment uniformly use the uplink subframe determined according to the uplink and downlink ratio notified by the SIB1 to transmit the Msg3, so that the base station can accurately receive the non-elMTA user.
- Msg3 sent by the device and the elMTA user device maintains backward compatibility of non-elMTA user devices before the R12 version.
- the non-elMTA user equipment and the eMTTA user equipment are uniformly used to transmit the random uplink subframe determined by the uplink and downlink ratios included in the signaling sent by the physical downlink shared channel.
- the message 3 is accessed so that the base station can accurately receive the random access message 3 sent by the non-elMTA user equipment and the elMTA user equipment.
- FIG. 5 is a flowchart of a fourth embodiment of a random access method according to the present invention. As shown in Figure 5, the method includes the following steps:
- Step S401 Send the first signaling to the elMTA user equipment by using the physical shared channel PDSCH, and send the second signaling to the elMTA user equipment by using the physical downlink control channel PDCCH or the enhanced physical downlink control channel ePDCCH, where the first signaling
- the first time division duplex TDD uplink and downlink ratio is included, and the second signaling includes a second TDD uplink and downlink ratio.
- Step S402 Send, on the downlink subframe set in the uplink and downlink ratio of the second TDD, a physical downlink control channel command PDCCH Order or an enhanced physical downlink control channel command ePDCCH Order to the elMTA user equipment.
- the base station sends (e) the PDCCH Order to the elMTA user equipment on the downlink subframe set in the second TDD uplink-downlink ratio, such that the downlink subframe that is available in the TDD ratio notified in the signaling sent by the (e) PDCCH More downlink sub-frames are available in the TDD ratio notified in SIB 1, which allows the UE to have more opportunities to receive (e) PDCCH Order, reduce random access delay, and improve base station scheduling flexibility.
- the base station may also be used on the downlink subframe set of the first TDD uplink and downlink ratio to the elMTA.
- the user equipment sends (e) the PDCCH Order.
- the downlink subframe set may include a special subframe.
- the base station sends the (e)PDCCH Order to the elMTA user equipment on the downlink subframe set in the uplink and downlink ratio of the second TDD
- the corresponding subframe type that can be indicated in the TDD uplink and downlink ratio is a downlink subframe
- the UE Other downlink data may be received according to the downlink subframe type. This case is adapted to the other messages transmitted by the base station in the special subframe listening device as described below.
- Step S403 on the downlink subframe set in the uplink and downlink ratio of the first TDD, send, by using the PDCCH or the ePDCCH, the radio network temporary identifier RA-RNTI with the random access to the elMTA user equipment plus 4 Downstream control information DCI.
- the base station After receiving the preamble sent by the UE, the base station still does not know whether the UE is an eMTTA UE. Therefore, the DCI that is scrambled by the RA-RNTI is sent to the UE in the downlink subframe or the special subframe corresponding to the TDD ratio notified by the SIB1. Make sure all UEs receive it correctly.
- Step S404 Receive a random access message 3 sent by the elMTA user equipment on an uplink subframe determined according to the first TDD uplink-downlink ratio.
- Step S405 Send a contention resolution message to the elMTA user equipment on the downlink subframe set in the second TDD uplink and downlink ratio.
- the base station After the base station receives the random access message 3 sent by the UE, it has already identified whether the UE is an elMTA user equipment or a non-elMTA user equipment, and whether the notification in the signaling sent by the (e)PDCCH is used when the UE is an eMTTA user.
- the TDD uplink and downlink ratio is matched. Therefore, the base station sends a contention resolution message to the elMTA user equipment on the downlink subframe set in the second TDD uplink and downlink ratio.
- the UE may have more opportunities. To receive the contention resolution message, reduce the random access delay, and improve the scheduling flexibility of the base station.
- the base station may also send a contention resolution message to the elMTA user equipment on the downlink subframe set in the uplink and downlink ratio of the first TDD.
- a non-elMTA user equipment and an eMTTA user equipment are uniformly received by using an uplink subframe determined by uplink and downlink ratios included in a signaling sent by a physical downlink shared channel. Sending each message in the random access process, so that the base station can accurately receive the random access message sent by the non-elMTA user equipment and the elMTA user equipment; Reduce random access delay and improve base station scheduling flexibility.
- FIG. 6 is a flow chart of a fifth embodiment of a random access method according to the present invention. As shown in Figure 6, the method includes the following steps:
- Step 501 The elMTA user equipment sends a pilot to the base station by using a physical random access channel (PRACH) pre-configured by the base station, or sends a reserved pilot in the pre-configured pilot or pilot set of the base station to the base station.
- PRACH physical random access channel
- Step S502 The elMTA user equipment receives signaling sent by the base station by using a physical downlink control channel PDCCH or an enhanced physical downlink control channel ePDCCH, where the signaling includes a time division duplex TDD uplink and downlink ratio.
- PDCCH physical downlink control channel
- ePDCCH enhanced physical downlink control channel
- Step S503 The elMTA user equipment determines to send an uplink subframe of the random access message 3 according to the TDD uplink and downlink ratio.
- Step S504 The elMTA user equipment sends the random access message 3 to the base station in the determined uplink subframe.
- the base station configures a new PRACH resource, or a new preamble, for the elMTA UE, or reserves a part of the preamble in the original preamble set.
- the base station notifies the PRACH resource, or a new one.
- the preamble, or a part of the preamble is reserved in the original preamble set to determine that the UE is an elMTA UE. Therefore, when receiving the random access message 3, the (TD) PDCCH signaling TDD ratio can be received, because the (e)PDCCH signaling TDD ratio represents the most suitable ratio of system performance, so the use The (e) PDCCH signaling TDD ratio is used to perform a random access procedure, which can improve the performance of the random access procedure.
- the random access message 3 is received according to the TDD uplink-downlink ratio notified by the SIB1, so that the base station can accurately receive the random access message sent by the elMTA user equipment and the non-elMTA user equipment.
- the new PRACH resource, or a new preamble, or a part of the preamble in the original preamble set may be reserved by the system broadcast message, dedicated RRC message or physical layer signaling, MAC layer signaling. Configure the mode to the UE.
- a random access method is used to send a preamble to a base station according to a new PRACH resource pre-configured by a base station, or a new preamble, or a part of a preamble is reserved in the original preamble set.
- the code may enable the base station to determine that the user equipment is an elMTA user equipment. Therefore, the base station accurately receives the random access message 3 sent by the elMTA user equipment and the non-elMTA user equipment.
- FIG. 7 is a flowchart of a sixth embodiment of a random access method according to the present invention. As shown in Figure 7, the method includes the following steps:
- Step S601 The elMTA user equipment receives a configuration notification sent by the base station in a predetermined manner, where the configuration notification includes any one of the following: a pre-configured physical random access channel PRACH, a pre-configured pilot or a pilot set in a pilot set. frequency.
- the configuration notification includes any one of the following: a pre-configured physical random access channel PRACH, a pre-configured pilot or a pilot set in a pilot set. frequency.
- Step S602 The elMTA user equipment sends a pilot to the base station by using the PRACH or sends a reserved pilot in the pre-configured pilot or pilot set to the base station.
- Step S603 the elMTA user equipment receives the physical downlink control channel of the base station.
- the signaling includes time division duplex TDD uplink and downlink ratio.
- Step S604 The elMTA user equipment receives the random access response message sent by the base station on the downlink subframe set of the TDD uplink and downlink ratio.
- Step S605 The elMTA user equipment determines, according to the TDD uplink-downlink ratio, an uplink subframe for transmitting the random access message 3.
- Step S606 The elMTA user equipment sends the random access message 3 to the base station in the determined uplink subframe.
- Step S607 The elMTA user equipment receives the contention resolution message sent by the base station on the downlink subframe set of the TDD uplink and downlink ratio.
- the base station determines that the UE is an elMTA UE according to the new PRACH resource, or a new preamble, or a part of the preamble is reserved in the original preamble set. Therefore, the subsequent random access response message, as well as the random access message 3 and the contention resolution message, can be transmitted or received according to the (e) PDCCH signaling TDD ratio.
- a random access method is used to send a preamble to a base station according to a new PRACH resource pre-configured by a base station, or a new preamble, or a part of a preamble is reserved in the original preamble set.
- the code may be used by the base station to determine that the user equipment is an eMTTA user equipment, so that the base station can accurately receive the random access message 3 sent by the eMTTA user equipment and the non-elMTA user equipment; and the random access delay can be reduced, and the base station scheduling flexibility is improved. Sex.
- FIG. 8 is a flowchart of a seventh embodiment of a random access method according to the present invention. As shown in Figure 8, The method includes the following steps:
- Step S701 Receive a reserved pilot in a pre-configured pilot or pilot set sent by the user equipment or a pilot transmitted through a pre-configured physical random access channel PRACH.
- Step S702 Determine that the user equipment is an elMTA user equipment.
- Step S703 Send signaling to the elMTA user equipment by using a physical downlink control channel PDCCH or an enhanced physical downlink control channel ePDCCH, where the signaling includes a time division duplex TDD uplink and downlink ratio.
- Step S704 Receive, by the elMTA user equipment, the random access message 3 sent by the elMTA user equipment according to the uplink subframe determined by the TDD uplink and downlink ratio.
- the base station configures a new PRACH resource, or a new preamble, for the elMTA UE, or reserves a part of the preamble in the original preamble set.
- the base station notifies the PRACH resource, or a new one.
- the preamble, or a part of the preamble is reserved in the original preamble set to determine that the UE is an elMTA UE. Therefore, when receiving the random access message 3, the (TD) PDCCH signaling TDD ratio can be received, because the (e)PDCCH signaling TDD ratio represents the most suitable ratio of system performance, so the use The (e) PDCCH signaling TDD ratio is used to perform a random access procedure, which can improve the performance of the random access procedure.
- the random access message 3 is received according to the TDD uplink-downlink ratio notified by the SIB1, so that the base station can accurately receive the random access message sent by the elMTA user equipment and the non-elMTA user equipment.
- the new PRACH resource, or a new preamble, or a part of the preamble in the original preamble set may be reserved by the system broadcast message, dedicated RRC message or physical layer signaling, MAC layer signaling. Configure the mode to the UE.
- a random access method is used to send a preamble to a base station according to a new PRACH resource pre-configured by a base station, or a new preamble, or a part of a preamble is reserved in the original preamble set.
- the code may be used by the base station to determine that the user equipment is an eMTTA user equipment, so that the base station accurately receives the random access message 3 sent by the elMTA user equipment and the non-elMTA user equipment.
- FIG. 9 is a flowchart of an eighth embodiment of a random access method according to the present invention. As shown in FIG. 9, the method includes the following steps: Step S801: Send a configuration notification to the elMTA user equipment by using a predetermined manner, where the configuration notification includes any one of the following: a pre-configured physical random access channel (PRACH), a pre-configured pilot, or a reserved pilot in a pilot set.
- PRACH physical random access channel
- pilot a pre-configured pilot
- Step S802 Receive a reserved pilot in the pre-configured pilot or pilot set sent by the elMTA user equipment or a pilot sent by using the PRACH.
- Step S803 determining that the user equipment is an elMTA user equipment.
- Step S804 sending, by using the physical downlink control channel physical downlink control channel PDCCH or the enhanced physical downlink control channel ePDCCH, signaling to the elMTA user equipment, where the signaling includes a time division duplex TDD uplink and downlink ratio.
- Step S805 Send a random access response message to the elMTA user equipment on the downlink subframe set of the TDD uplink and downlink ratio.
- Step S806 Receive, by the elMTA user equipment, the random access message 3 sent by the elMTA user equipment according to the uplink subframe determined by the TDD uplink and downlink ratio.
- Step S807 Send a contention resolution message to the elMTA user equipment on the downlink subframe set of the TDD uplink and downlink ratio.
- the base station determines that the UE is an elMTA UE according to the new PRACH resource, or a new preamble, or a part of the preamble is reserved in the original preamble set. Therefore, the subsequent random access response message, as well as the random access message 3 and the contention resolution message, can be transmitted or received according to the (e) PDCCH signaling TDD ratio.
- a random access method is used to send a preamble to a base station according to a new PRACH resource pre-configured by a base station, or a new preamble, or a part of a preamble is reserved in the original preamble set.
- the code may be used by the base station to determine that the user equipment is an eMTTA user equipment, so that the base station can accurately receive the random access message 3 sent by the eMTTA user equipment and the non-elMTA user equipment; and the random access delay can be reduced, and the base station scheduling flexibility is improved. Sex.
- FIG. 10 is a schematic structural diagram of a first embodiment of a user equipment according to the present invention. As shown in FIG. 10, the user equipment 1000 includes:
- the receiving unit 11 is configured to receive first signaling that is sent by the base station to the eMTTA user equipment by using the physical downlink shared channel (PDSCH), and send the base station to the eMTTA user by using a physical downlink control channel PDCCH or an enhanced physical downlink control channel ePDCCH.
- the second signaling of the device where the first signaling includes a first time division duplex TDD uplink and downlink ratio, and the second signaling includes a second TDD Up and down ratio.
- the first signaling sent by the base station may be received through the PDSCH, and the first signaling may be SIB1.
- the first TDD uplink and downlink ratio is included in the first signaling, and the first TDD uplink and downlink ratio is semi-statically configured.
- the second receiving unit 12 may also receive the second signaling sent by the base station through the (e)PDCCH.
- the second TDD uplink and downlink ratio is included in the second signaling, and the second TDD uplink and downlink ratio can be dynamically changed, for example, 10ms to 40ms to change the uplink and downlink ratio.
- the subframe type and ratio rule included in the first TDD uplink-downlink ratio and the second TDD uplink-downlink ratio are still the uplink-downlink ratios as shown in Table 1.
- a determining unit 12 configured to determine, according to the first TDD uplink-downlink ratio, to send a random access message
- Msg3 is sent according to the first TDD uplink and downlink ratio.
- the determining unit 13 of the elMTA user does not determine n+k1 according to the TDD uplink-downlink ratio notified in the (e)PDCCH, or determines the subframe in which the Msg3 is transmitted, but determines the TDD ratio notified in the SIB1. n+kl , or to determine the subframe in which Msg3 is sent.
- the sending unit 13 is configured to send the random access message 3 to the base station in the determined uplink subframe.
- the first transmitting unit 14 of the elMTA user equipment transmits Msg3 to the base station on the determined uplink subframe.
- the base station knows that the non-elMTA user equipment and the elMTA user equipment uniformly use the uplink subframe determined according to the uplink and downlink ratio notified by the SIB1 to send the Msg3, so that the base station can accurately receive the non-elMTA user.
- the device and the Msg3 sent by the elMTA user equipment maintain backward compatibility of the non-elMTA user equipment before the R12 version.
- the user equipment is configured to send the random access by using the uplink subframe determined by the uplink and downlink ratios included in the signaling sent by the physical downlink shared channel by using the non-elMTA user equipment and the eMTTA user equipment.
- Message 3 enabling the base station to accurately receive non-elMTA Random access message 3 sent by the user equipment and the elMTA user equipment.
- FIG. 11 is a schematic structural diagram of a second embodiment of a user equipment according to the present invention. As shown in FIG. 11, the user equipment 2000 includes:
- the receiving unit 21 is configured to receive, by the base station, the first signaling that is sent by the base station to the eMTTA user equipment by using the physical downlink shared channel (PDSCH), and send the base station to the eMTTA user by using a physical downlink control channel PDCCH or an enhanced physical downlink control channel ePDCCH.
- the second signaling of the device where the first signaling includes a first time division duplex TDD uplink and downlink ratio, and the second signaling includes a second TDD uplink and downlink ratio.
- the receiving unit 21 is further configured to monitor, on the downlink subframe set in the second TDD uplink and downlink ratio, the physical downlink control channel command PDCCH Order or the enhanced physical downlink control channel command ePDCCH Orde sent by the base station.
- the receiving unit 21 may monitor (e) the PDCCH Order according to the TDD uplink and downlink ratio notified in the signaling sent by the (e) PDCCH, specifically, in the TDD proportion of the signaling notified by the (e) PDCCH.
- a downlink subframe or a special subframe is used to listen to (e) PDCCH order.
- the UE since the downlink subframes available in the TDD ratio notified in the signaling sent by the (e) PDCCH are more than the downlink subframes available in the TDD ratio notified in the SIB1, the UE can have more opportunities to receive ( e) PDCCH Order, reduce random access delay, and improve base station scheduling flexibility.
- the UE may also monitor the (e)PDCCH Order sent by the base station according to the TDD ratio notified in the message sent through the PDSCH, and the message may be SIB1.
- the downlink subframe set may include a special subframe.
- the UE may receive other downlink data according to the downlink subframe type. This case is adapted to the other messages transmitted by the base station listening to the special subframe as described below.
- the base station Since (e) the PDCCH order is sent by the base station to the UE in the connected state, the base station is triggered to perform random access, so the base station usually knows whether the UE is an elMTA user, and whether the (e)PDCCH is used when the UE is an eMTTA user. The TDD uplink and downlink ratio notified in the signaling.
- the sending unit 23 is configured to send a pilot preamble to the base station on the uplink subframe set in the first TDD uplink and downlink ratio.
- the transmitting unit 23 of the elMTA user equipment sends the preamble according to the uplink subframe in the TDD uplink and downlink ratio notified by the SIB1, so that the base station can accurately receive the preamble sent by the user equipment.
- the (e)PDCCH order carries the preamble sequence number.
- the existing protocol specifies that: the user receives the (e)PDCCH order in the subframe n, then the n+k2 subframe.
- the base station may send (e) the PDCCH order to the user equipment to trigger the random access procedure of the user equipment, or the user equipment itself may trigger the random access procedure.
- the receiving unit 21 is further configured to: on the downlink subframe set in the first TDD uplink-downlink ratio, listen to the radio network temporary identifier RA-RNTI that is sent by the base station by using the PDCCH or the ePDCCH, and add 4 Especially the downlink control information DCI.
- the third monitoring unit 25 monitors the DCI that is scrambled by the RA-RNTI according to the downlink subframe or the special subframe corresponding to the TDD ratio notified by the SIB1. All UEs can receive it correctly.
- a determining unit 22 configured to determine, according to the first TDD uplink and downlink ratio, to send a random access message
- the sending unit 23 is further configured to send the random access message 3 to the base station on the determined uplink subframe.
- the receiving unit 21 is further configured to receive, on the downlink subframe set in the second TDD uplink and downlink ratio, a contention resolution message sent by the base station.
- the base station After the base station receives the random access message 3 sent by the UE, it has already identified whether the UE is an elMTA user equipment or a non-elMTA user equipment, and whether the notification in the signaling sent by the (e)PDCCH is used when the UE is an eMTTA user.
- the TDD uplink and downlink ratio is matched. Therefore, the receiving unit 21 monitors the contention resolution message according to the TDD uplink and downlink ratio notified in the signaling sent by the (e)PDCCH.
- the UE may have more opportunities. To receive the contention resolution message, reduce the random access delay, and improve the scheduling flexibility of the base station.
- the UE may also monitor the user equipment according to the embodiment of the present invention by using the TDD uplink-downlink ratio notified by the SIB1, by using the non-elMTA user equipment and
- the elMTA user equipment uniformly uses the uplink subframe determined by the uplink and downlink ratios included in the signaling sent by the physical downlink shared channel to receive and send each message in the random access procedure, so that the base station can accurately receive the non-elMTA user equipment.
- the random access message sent by the eMTTA user equipment also reduces the power overhead and uplink interference caused by the eMTTA user equipment to determine the random access message 3 transmission time and the random access message 3 according to the second TDD uplink-downlink ratio.
- the random access delay can be reduced, and the base station scheduling flexibility is improved.
- FIG. 12 is a schematic structural diagram of a third embodiment of a user equipment according to the present invention. As shown in FIG. 12, the user equipment 7000 includes:
- the sending unit 73 is configured to send a pilot to the base station by using a physical random access channel (PRACH) pre-configured by the base station, or send a pre-relay in the set of pilots or pilots pre-configured by the base station to the base station.
- PRACH physical random access channel
- the receiving unit 71 is configured to receive signaling sent by the base station by using a physical downlink control channel PDCCH or an enhanced physical downlink control channel ePDCCH, where the signaling includes a time division duplex TDD uplink and downlink ratio.
- the determining unit 72 is configured to determine, according to the TDD uplink and downlink ratio, an uplink subframe that sends the random access message 3.
- the sending unit 73 is further configured to send the random access message 3 to the base station on the determined uplink subframe.
- the base station configures a new PRACH resource, or a new preamble, for the elMTA UE, or reserves a part of the preamble in the original preamble set.
- the base station notifies the PRACH resource, or a new one.
- the preamble, or a part of the preamble is reserved in the original preamble set to determine that the UE is an elMTA UE. Therefore, when receiving the random access message 3, the (TD) PDCCH signaling TDD ratio can be received, because the (e)PDCCH signaling TDD ratio represents the most suitable ratio of system performance, so the use The (e) PDCCH signaling TDD ratio is used to perform a random access procedure, which can improve the performance of the random access procedure.
- the random access message 3 is received according to the TDD uplink-downlink ratio notified by the SIB1, so that the base station can accurately receive the random access message sent by the elMTA user equipment and the non-elMTA user equipment.
- the new PRACH resource, or a new preamble, or the original A part of the preamble is reserved in the preamble set, and can be configured to the UE by using a system broadcast message, a dedicated RRC message, or physical layer signaling, and MAC layer signaling.
- a user equipment sends a preamble to a base station according to a new PRACH resource pre-configured by a base station, or a new preamble, or a part of a preamble is reserved in the original preamble set.
- the base station can be configured to determine that the user equipment is an eMTTA user equipment, so that the base station can accurately receive the random access message 3 sent by the eMTTA user equipment and the non-elMTA user equipment.
- FIG. 13 is a schematic structural diagram of a fourth embodiment of a user equipment according to the present invention. As shown in FIG. 13, the user equipment 8000 includes:
- the receiving unit 81 is configured to receive a configuration notification sent by the base station by using a predetermined manner, where the configuration notification includes any one of the following: a pre-configured physical random access channel (PRACH), a pre-configured pilot, or a pre-configured pilot set. frequency.
- PRACH physical random access channel
- pilot pre-configured pilot set. frequency.
- the sending unit 83 is configured to send a pilot to the base station by using the PRACH or send the reserved pilot in the pre-configured pilot or pilot set to the base station.
- the receiving unit 81 is further configured to receive signaling sent by the base station by using a physical downlink control channel PDCCH or an enhanced physical downlink control channel ePDCCH, where the signaling includes a time division duplex TDD uplink and downlink ratio.
- the receiving unit 81 is further configured to receive, on the downlink subframe set of the TDD uplink and downlink ratio, a random access response message sent by the base station.
- the determining unit 85 is configured to determine, according to the TDD uplink and downlink ratio, an uplink subframe that sends the random access message 3.
- the sending unit 83 is further configured to send the random access message 3 to the base station on the determined uplink subframe.
- the receiving unit 81 is further configured to receive, on the downlink subframe set of the TDD uplink and downlink ratio, a contention resolution message sent by the base station.
- the base station determines that the UE is an elMTA UE according to the new PRACH resource, or a new preamble, or a part of the preamble is reserved in the original preamble set. Therefore, the subsequent random access response message, as well as the random access message 3 and the contention resolution message, can be transmitted or received according to the (e) PDCCH signaling TDD ratio.
- a user equipment by using a new pre-configured according to a base station
- the PRACH resource, or a new preamble, or a part of the preamble is reserved in the original preamble set, and the preamble is sent to the base station, so that the base station determines that the user equipment is an eMTTA user equipment, so that the base station accurately receives the eMTTA.
- the random access message 3 sent by the user equipment and the non-elMTA user equipment can reduce the random access delay and improve the scheduling flexibility of the base station.
- FIG. 14 is a schematic structural diagram of a first embodiment of a base station according to the present invention. As shown in Figure 14, the base station 3000 includes:
- the sending unit 31 is configured to send the first signaling to the elMTA user equipment by using the physical shared channel PDSCH, and send the second signaling to the eMTTA user equipment by using a physical downlink control channel PDCCH or an enhanced physical downlink control channel ePDCCH, where
- the first signaling includes a first time division duplex TDD uplink and downlink ratio
- the second signaling includes a second TDD uplink and downlink ratio.
- the base station Before the base station correctly receives the random access message 3, the base station does not know that each message before the random access message 3 is sent is an eMTTA user equipment or a non-elMTA user equipment, but the sending unit 31 can send the elMTA user equipment and the non-elMTA user equipment through the PDSCH.
- the first signaling is sent, and the first signaling may be SIB1.
- the first TDD uplink and downlink ratio is included in the first signaling, and the first TDD uplink and downlink ratio is semi-statically configured.
- the second signaling sent by the base station can also be received through the (e)PDCCH. Therefore, the sending unit 31 sends the second signaling to the elMTA user equipment through the (e)PDCCH.
- the second TDD uplink and downlink ratio is included in the second signaling, and the second TDD uplink and downlink ratio can be dynamically changed, for example, 10ms to 40ms to change the uplink and downlink ratio.
- the subframe type and ratio rule included in the first TDD uplink-downlink ratio and the second TDD uplink-downlink ratio are still the uplink-downlink ratios as shown in Table 1.
- the receiving unit 32 is configured to receive the random access message 3 sent by the elMTA user equipment on an uplink subframe determined according to the first TDD uplink and downlink ratio.
- Msg3 is sent according to the first TDD uplink and downlink ratio.
- the elMTA user does not determine the subframe in which the Msg3 is transmitted according to the TDD uplink-downlink ratio notified in the (e) PDCCH, but determines the subframe in which the Msg3 is transmitted according to the TDD ratio notified in the SIB1. Therefore, for the non-elMTA user equipment or the elMTA user equipment, the receiving unit 32 can accurately receive the Msg3 they transmit on the uplink subframe determined according to the first TDD uplink-downlink ratio.
- the base station knows that the non-elMTA user equipment and the elMTA are used.
- the user equipment uniformly transmits the Msg3 according to the uplink subframe determined by the uplink and downlink ratio notified by the SIB1. Therefore, the base station can accurately receive the Msg3 sent by the non-elMTA user equipment and the elMTA user equipment, and maintain the non-elMTA before the R12 version. Backward compatibility of user devices.
- a base station is configured to send a random access message by using an uplink subframe determined by uplink and downlink ratios included in a signaling sent by a physical downlink shared channel by using a non-elMTA user equipment and an eMTTA user equipment. 3, so that the base station can accurately receive the random access message 3 sent by the non-elMTA user equipment and the elMTA user equipment.
- FIG. 15 is a schematic structural diagram of a second embodiment of a base station according to the present invention. As shown in Figure 15, the base station 4000 includes:
- the sending unit 41 is configured to send the first signaling to the elMTA user equipment by using the physical shared channel PDSCH, and send the second signaling to the elMTA user equipment by using a physical downlink control channel PDCCH or an enhanced physical downlink control channel ePDCCH, where
- the first signaling includes a first time division duplex TDD uplink and downlink ratio
- the second signaling includes a second TDD uplink and downlink ratio.
- the sending unit 41 is further configured to send, on the downlink subframe set in the uplink and downlink ratio of the second TDD, a physical downlink control channel command PDCCH Order or an enhanced physical downlink control channel to the user equipment that enables the eLMTA function. Directs the ePDCCH Order.
- the sending unit 41 sends (e) the PDCCH Order to the elMTA user equipment on the downlink subframe set in the second TDD uplink and downlink ratio, such that the downlink is available in the TDD ratio notified in the signaling of the (e) PDCCH transmission.
- the subframe is more than the downlink subframes available in the TDD ratio notified in SIB 1, which allows the UE to have more opportunities to receive the (e)PDCCH order, reduce the random access delay, and improve the scheduling flexibility of the base station.
- the base station may also send (e) the PDCCH Order to the elMTA user equipment on the downlink subframe set of the first TDD uplink and downlink ratio.
- the downlink subframe set may include a special subframe.
- the base station sends the (e)PDCCH Order to the elMTA user equipment on the downlink subframe set in the uplink and downlink ratio of the second TDD
- the corresponding subframe type that can be indicated in the TDD uplink and downlink ratio is a downlink subframe
- the UE Other downlink data may be received according to the downlink subframe type. This case is adapted to the other messages transmitted by the base station in the special subframe listening device as described below.
- the sending unit 41 is further configured to send, by using the PDCCH or the ePDCCH, the radio network temporary identifier RA-RNTI that uses random access by using the PDCCH or ePDCCH on the downlink subframe set in the first TDD uplink and downlink ratio.
- Downstream control information DCI DCI.
- the base station After receiving the preamble sent by the UE, the base station still does not know whether the UE is an elMTA UE, and sends a DCI scrambled by the RA-RNTI to ensure that all UEs can receive correctly.
- the receiving unit 42 is configured to receive the random access message 3 sent by the elMTA user equipment on the uplink subframe determined according to the first TDD uplink and downlink ratio.
- the sending unit 41 is further configured to send a contention resolution message to the elMTA user equipment on the downlink subframe set in the second TDD uplink and downlink ratio.
- the base station After the base station receives the random access message 3 sent by the UE, it has already identified whether the UE is an elMTA user equipment or a non-elMTA user equipment, and whether the notification in the signaling sent by the (e)PDCCH is used when the UE is an eMTTA user.
- the TDD uplink and downlink ratio is matched. Therefore, the sending unit 41 sends a contention resolution message to the elMTA user equipment on the downlink subframe set in the second TDD uplink and downlink ratio.
- the UE may have more opportunities. To receive the contention resolution message, reduce the random access delay, and improve the scheduling flexibility of the base station.
- the base station may also send a contention resolution message to the elMTA user equipment on the downlink subframe set in the uplink and downlink ratio of the first TDD.
- a base station is configured to receive and transmit a random connection by using an uplink subframe determined by uplink and downlink ratios included in a signaling sent by a physical downlink shared channel by using a non-elMTA user equipment and an eMTTA user equipment.
- Each message in the process is forwarded, so that the base station can accurately receive the random access message sent by the non-elMTA user equipment and the eMTTA user equipment; and can reduce the random access delay and improve the scheduling flexibility of the base station.
- FIG. 16 is a schematic structural diagram of a third embodiment of a base station according to the present invention. As shown in Figure 16, the base station 9000 includes:
- the receiving unit 91 is configured to receive a reserved pilot in a pre-configured pilot or pilot set sent by the user equipment or a pilot transmitted through a pre-configured physical random access channel PRACH.
- the determining unit 92 is configured to determine that the user equipment is an elMTA user equipment.
- the sending unit 93 is configured to send, by using the physical downlink control channel PDCCH or the enhanced physical downlink control channel ePDCCH, the signaling to the user equipment that enables the eMTTA function, where the signaling includes a time division duplex TDD uplink and downlink ratio.
- the receiving unit 91 is further configured to receive the random access message 3 sent by the eMTTA user equipment on the uplink subframe determined by the eMTTA user equipment according to the TDD uplink and downlink ratio.
- the base station configures a new PRACH resource, or a new preamble, for the elMTA UE, or reserves a part of the preamble in the original preamble set.
- the base station notifies the PRACH resource, or a new one.
- the preamble, or a part of the preamble is reserved in the original preamble set to determine that the UE is an elMTA UE. Therefore, when receiving the random access message 3, the (TD) PDCCH signaling TDD ratio can be received, because the (e)PDCCH signaling TDD ratio represents the most suitable ratio of system performance, so the use The (e) PDCCH signaling TDD ratio is used to perform a random access procedure, which can improve the performance of the random access procedure.
- the random access message 3 is received according to the TDD uplink-downlink ratio notified by the SIB1, so that the base station can accurately receive the random access message sent by the elMTA user equipment and the non-elMTA user equipment.
- the new PRACH resource, or a new preamble, or a part of the preamble in the original preamble set may be reserved by the system broadcast message, dedicated RRC message or physical layer signaling, MAC layer signaling. Configure the mode to the UE.
- a base station may send a preamble to a base station according to a new PRACH resource pre-configured by the base station, or a new preamble, or a part of the preamble is reserved in the original preamble set.
- the base station is configured to determine that the user equipment is an eMTTA user equipment, so that the base station accurately receives the random access message 3 sent by the eMTTA user equipment and the non-elMTA user equipment.
- FIG. 17 is a schematic structural diagram of a fourth embodiment of a base station according to the present invention. As shown in Figure 17, the base station 10000 includes:
- the sending unit 113 is configured to send, by using a predetermined manner, a configuration notification to the elMTA user equipment, where the configuration notification includes any one of the following: a pre-configured physical random access channel (PRACH), a pre-configured pilot, or a reservation in a pilot set. Pilot.
- PRACH physical random access channel
- pilot a pre-configured pilot
- the receiving unit 111 is configured to receive a reserved pilot in the pre-configured pilot or pilot set sent by the elMTA user equipment or a pilot sent by using the PRACH.
- the determining unit 112 is configured to determine that the user equipment is an elMTA user equipment.
- the sending unit 113 is further configured to pass the physical downlink control channel PDCCH or enhanced physical downlink control.
- the channel ePDCCH sends signaling to the user equipment that enables the eMTTA function, where the signaling includes a time division duplex TDD uplink and downlink ratio.
- the sending unit 113 is further configured to send a random access response message to the elMTA user equipment on the downlink subframe set of the TDD uplink and downlink ratio.
- the receiving unit 111 is further configured to receive, according to the uplink subframe determined by the TDD uplink and downlink ratio, the random access message 3 sent by the elMTA user equipment.
- the sending unit 113 is further configured to send a contention resolution message to the elMTA user equipment on the downlink subframe set of the TDD uplink and downlink ratio.
- the base station determines that the UE is an elMTA UE according to the new PRACH resource, or a new preamble, or a part of the preamble is reserved in the original preamble set. Therefore, the subsequent random access response message, as well as the random access message 3 and the contention resolution message, can be transmitted or received according to the (e) PDCCH signaling TDD ratio.
- a base station may send a preamble to a base station according to a new PRACH resource pre-configured by the base station, or a new preamble, or a part of the preamble is reserved in the original preamble set.
- the base station is configured to determine that the user equipment is an eMTTA user equipment, so that the base station can accurately receive the random access message 3 sent by the eMTTA user equipment and the non-elMTA user equipment; and the random access delay can be reduced, and the scheduling flexibility of the base station is improved.
- FIG. 18 is a schematic structural diagram of a fifth embodiment of a user equipment according to the present invention. As shown in FIG. 18, the user equipment 5000 includes:
- Receiver 51 processor 52 and transmitter 53.
- a receiver configured to receive first signaling that is sent by the base station to the eMTTA user equipment by using the physical downlink shared channel (PDSCH), and send the base station to the eMTTA user equipment by using a physical downlink control channel PDCCH or an enhanced physical downlink control channel (ePDCCH)
- the second signaling where the first signaling includes a first time division duplex TDD uplink and downlink ratio;
- a processor configured to determine, according to the first TDD uplink-downlink ratio, an uplink subframe that sends a random access message 3;
- a transmitter configured to send the random access message to the base station on the determined uplink subframe
- the transmitter before the transmitting, by the transmitter, the step of sending the random access message 3 to the base station in the determined uplink subframe, the transmitter is further configured to perform the following steps:
- the receiver before the step of transmitting, by the transmitter, the pilot preamble to the base station in the uplink subframe set in the first TDD uplink and downlink ratio, the receiver further uses Perform the following steps:
- the receiver before the transmitting, by the transmitter, the step of sending the random access message 3 to the base station in the determined uplink subframe, the receiver is further configured to perform the following steps. :
- the downlink control information DCI that is scrambled by the radio network temporary identifier RA-RNTI that is sent by the base station by using the PDCCH or the ePDCCH.
- the receiver is further configured to perform the following steps. :
- the first signaling is system information block 1.
- the user equipment is configured to enable the non-elMTA user equipment and the eMTTA user equipment to uniformly use the uplink and downlink configurations included in the signaling sent by the physical downlink shared channel.
- the random access message 3 is sent in the determined uplink subframe, so that the base station can accurately receive the random access message 3 sent by the non-elMTA user equipment and the eMTTA user equipment, and also reduces the eMTTA user equipment according to the second TDD uplink and downlink.
- the power overhead and the uplink interference problem caused by the random access message 3 sending time and the random access message 3 are determined; and the random access delay can be reduced, and the base station scheduling flexibility is improved.
- FIG. 19 is a schematic structural diagram of an embodiment of a base station according to the present invention. As shown in Figure 19, the base station 6000 includes:
- Transmitter 61 and receiver 62 are identical to Transmitter 61 and receiver 62.
- a transmitter configured to send, by using a physical shared channel, the PDSCH, the first signaling to the elMTA user equipment, and send, by using the physical downlink control channel PDCCH or the enhanced physical downlink control channel ePDCCH, the second signaling to the elMTA user equipment, where
- the signaling includes a first time division duplex TDD uplink and downlink ratio, and the second signaling includes a second TDD uplink and downlink ratio;
- a receiver configured to receive the random access message 3 sent by the elMTA user equipment on an uplink subframe determined according to the first TDD uplink-downlink ratio.
- the receiver performs the step of receiving the random access message 3 sent by the eMTTA user equipment on an uplink subframe determined according to the first TDD uplink-downlink ratio.
- the transmitter is also used to perform the following steps:
- the receiving before the step of receiving the random access message 3 sent by the eMTTA user equipment according to the first uplink subframe determined by the first TDD uplink-downlink ratio, is performed,
- the transmitter is further configured to perform the following steps:
- the receiver performs the receiving the elMTA user setting After the step of the random access message 3 sent on the first uplink subframe determined according to the first TDD uplink-downlink ratio, the transmitter is further configured to perform the following steps:
- the first signaling is system information block 1.
- a base station device receives and transmits a random sequence by using an uplink subframe determined by uplink and downlink ratios included in a signaling sent by a physical downlink shared channel by using a non-elMTA user equipment and an eMTTA user equipment.
- Each message in the process is accessed, so that the base station can accurately receive the random access message sent by the non-elMTA user equipment and the eMTTA user equipment; and can reduce the random access delay and improve the scheduling flexibility of the base station.
- FIG. 6 is a flow chart of a fifth embodiment of a random access method according to the present invention. As shown in Figure 6, the method includes the following steps:
- Step 501 Send a pilot to the base station by using a physical random access channel (PRACH) pre-configured by the base station, or send a reserved pilot in a pre-configured pilot or pilot set of the base station to the base station.
- PRACH physical random access channel
- Step S502 Receive signaling that is sent by the base station by using a physical downlink control channel (e) PDCCH, where the signaling includes a time division duplex TDD uplink and downlink ratio.
- e physical downlink control channel
- Step S503 determining, according to the TDD uplink-downlink ratio, an uplink subframe for transmitting the random access message 3.
- Step S504 Send the random access message to the base station in the determined uplink subframe.
- FIG. 7 is a flowchart of a sixth embodiment of a random access method according to the present invention. As shown in Figure 7, the method includes the following steps:
- Step S601 Receive a configuration notification sent by the base station by using a predetermined manner, where the configuration notification includes any one of the following: a pre-configured physical random access channel (PRACH), a pre-configured pilot, or a reserved pilot in a pilot set.
- PRACH physical random access channel
- Step S602 Send a pilot to the base station by using the PRACH or send a reserved pilot in the pre-configured pilot or pilot set to the base station.
- Step S603 receiving signaling that the base station sends through the physical downlink control channel (e) PDCCH,
- the signaling includes a time division duplex TDD uplink and downlink ratio.
- Step S604 Receive a random access response message sent by the base station on the downlink subframe set of the TDD uplink and downlink ratio.
- Step S605 determining, according to the TDD uplink-downlink ratio, an uplink subframe for transmitting the random access message 3.
- Step S606 Send the random access message to the base station in the determined uplink subframe.
- Step S607 Receive a contention resolution message sent by the base station on the downlink subframe set of the TDD uplink and downlink ratio.
- FIG. 8 is a flowchart of a seventh embodiment of a random access method according to the present invention. As shown in Figure 8, the method includes the following steps:
- Step S701 Receive a reserved pilot in a pre-configured pilot or pilot set sent by the user equipment or a pilot transmitted through a pre-configured physical random access channel PRACH.
- Step S702 Determine that the user equipment is a user equipment that enables the elMTA function.
- Step S703 Send signaling to the user equipment that enables the elMTA function by using a physical downlink control channel (e) PDCCH, where the signaling includes a time division duplex TDD uplink and downlink ratio.
- e physical downlink control channel
- Step S704 Receive, by the user equipment that enables the elMTA function, the random access message 3 sent by the user equipment enabled with the elMTA function, according to the uplink subframe determined by the TDD uplink and downlink ratio.
- FIG. 9 is a flowchart of an eighth embodiment of a random access method according to the present invention. As shown in Figure 9, the method includes the following steps:
- Step S801 Send a configuration notification to the user equipment by using a predetermined manner, where the configuration notification includes any one of the following: a pre-configured physical random access channel (PRACH), a pre-configured pilot, or a reserved pilot in a pilot set.
- PRACH physical random access channel
- Step S802 receiving a reserved pilot in the pre-configured pilot or pilot set sent by the user equipment or a pilot sent by using the PRACH.
- Step S803 determining that the user equipment is a user equipment that enables the elMTA function.
- Step S804 sending, by using a physical downlink control channel (e) PDCCH, signaling to the user equipment that enables the elMTA function, where the signaling includes a time division duplex TDD uplink and downlink ratio.
- e physical downlink control channel
- Step S805 on the downlink subframe set of the TDD uplink and downlink ratio, to the enable elMTA
- the functional user equipment sends a random access response message.
- Step S806 The user equipment that is enabled with the elMTA function receives the random access message 3 sent by the user equipment enabled with the elMTA function in the uplink subframe determined by the TDD uplink and downlink ratio.
- Step S807 Send a contention resolution message to the user equipment that enables the elMTA function on the downlink subframe set of the TDD uplink and downlink ratio.
- the disclosed apparatus and method may be implemented in other ways.
- the device embodiments described above are merely illustrative.
- the division of the modules is only a logical function division.
- there may be another division manner for example, multiple modules or components may be combined or Can be integrated into another device, or some features can be ignored, or not executed.
- the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some communication interface, device or module, and may be in electrical, mechanical or other form.
- the modules described as separate components may or may not be physically separate, and may also be distributed over multiple network elements. Some or all of the modules may be selected according to actual needs to achieve the objectives of the solution of the embodiment.
- each functional module in each embodiment of the present invention may be integrated into one processing module, or each module may exist physically separately, or two or more modules may be integrated into one module.
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Abstract
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CN201380001533.5A CN105264983B (zh) | 2013-11-01 | 2013-11-01 | 一种随机接入方法及相关装置 |
EP17193779.0A EP3331302B1 (en) | 2013-11-01 | 2013-11-01 | Random access method and related apparatus |
MX2016005476A MX354882B (es) | 2013-11-01 | 2013-11-01 | Metodo de acceso aleatorio, equipo de usuario y estacion base. |
RU2016121512A RU2628020C1 (ru) | 2013-11-01 | 2013-11-01 | Способ произвольного доступа и соответствующая аппаратура |
BR112016009736-0A BR112016009736B1 (pt) | 2013-11-01 | 2013-11-01 | Método de acesso randômico, equipamento de usuário e estação base |
PCT/CN2013/086458 WO2015062090A1 (zh) | 2013-11-01 | 2013-11-01 | 一种随机接入方法及相关装置 |
ZA2016/02911A ZA201602911B (en) | 2013-11-01 | 2016-04-29 | Random access method, user equipment , and base station. |
US15/143,559 US10159095B2 (en) | 2013-11-01 | 2016-04-30 | Random access method and related apparatus |
US16/208,106 US10462826B2 (en) | 2013-11-01 | 2018-12-03 | Random access method and related apparatus |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2017024467A1 (zh) * | 2015-08-10 | 2017-02-16 | 华为技术有限公司 | 无线通信的方法、网络设备和终端设备 |
CN110739988A (zh) * | 2018-07-20 | 2020-01-31 | 上海朗帛通信技术有限公司 | 一种被用于无线通信的用户设备、基站中的方法和装置 |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
MX354882B (es) | 2013-11-01 | 2018-03-23 | Huawei Tech Co Ltd | Metodo de acceso aleatorio, equipo de usuario y estacion base. |
EP3266244B1 (en) * | 2015-03-05 | 2020-06-24 | Telefonaktiebolaget LM Ericsson (publ) | Resource allocation method and control entity using the same |
US10624119B2 (en) * | 2015-04-08 | 2020-04-14 | Qualcomm Incorporated | Transmission scheduling for contention based carrier |
US11700641B2 (en) * | 2015-08-19 | 2023-07-11 | Lg Electronics Inc. | Random access procedure performing method in wireless communication system, and apparatus therefor |
PT3342226T (pt) * | 2015-08-25 | 2024-05-28 | Nokia Solutions & Networks Oy | Configuração de trama de rádio |
WO2018174595A1 (ko) * | 2017-03-23 | 2018-09-27 | 엘지전자 주식회사 | 랜덤 접속 과정을 수행하는 방법 및 이를 위한 장치 |
US10257835B2 (en) | 2017-03-24 | 2019-04-09 | At&T Intellectual Property I, L.P. | Facilitating enhanced beam management in a wireless communication system |
US11706806B2 (en) | 2017-04-28 | 2023-07-18 | Nec Corporation | Methods, terminal devices, network elements and apparatuses for random access process |
US9949298B1 (en) | 2017-05-04 | 2018-04-17 | At&T Intellectual Property I, L.P. | Facilitating signaling and transmission protocols for enhanced beam management for initial access |
EP3646657B1 (en) | 2017-07-04 | 2022-04-20 | Samsung Electronics Co., Ltd. | Method and apparatus for communication based on frame structure |
US11284437B2 (en) | 2018-02-23 | 2022-03-22 | Apple Inc. | On-demand system information request procedures for new radio (NR) |
WO2019191995A1 (zh) * | 2018-04-04 | 2019-10-10 | 华为技术有限公司 | 一种信息处理方法和设备 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101621849A (zh) * | 2008-06-30 | 2010-01-06 | 中兴通讯股份有限公司 | 一种下行数据接收状态的反馈方法 |
CN103378963A (zh) * | 2012-04-27 | 2013-10-30 | 北京三星通信技术研究有限公司 | 支持tdd系统灵活变换子帧的双工方向的方法和设备 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1739993A1 (en) | 2005-07-01 | 2007-01-03 | Siemens S.p.A. | Method for controlling the access to a TDMA wireless channel from nodes of a network of either linear or tree topology |
US8665857B2 (en) * | 2007-12-18 | 2014-03-04 | Qualcomm Incorporated | Method and apparatus for sending and receiving random access response in a wireless communication system |
TW201322681A (zh) * | 2011-09-26 | 2013-06-01 | Innovative Sonic Corp | 無線通訊系統中處理通道狀態資訊之方法和通訊設備 |
CN104081862B (zh) | 2011-12-20 | 2018-01-02 | Lg 电子株式会社 | 在无线通信系统中执行随机接入过程的方法及其设备 |
CN103312462B (zh) * | 2012-03-16 | 2016-11-16 | 上海贝尔股份有限公司 | 解决tdd上行资源配置信息和harq应答消息冲突的方法 |
WO2013141770A1 (en) * | 2012-03-22 | 2013-09-26 | Telefonaktiebolaget L M Ericsson (Publ) | Dynamic configuration of subframes in a radio communications system |
US9756658B2 (en) * | 2012-06-26 | 2017-09-05 | Futurewei Technologies, Inc. | System and method for contention-free random access |
MX354882B (es) * | 2013-11-01 | 2018-03-23 | Huawei Tech Co Ltd | Metodo de acceso aleatorio, equipo de usuario y estacion base. |
-
2013
- 2013-11-01 MX MX2016005476A patent/MX354882B/es active IP Right Grant
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- 2013-11-01 WO PCT/CN2013/086458 patent/WO2015062090A1/zh active Application Filing
-
2016
- 2016-04-29 ZA ZA2016/02911A patent/ZA201602911B/en unknown
- 2016-04-30 US US15/143,559 patent/US10159095B2/en active Active
-
2018
- 2018-12-03 US US16/208,106 patent/US10462826B2/en active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101621849A (zh) * | 2008-06-30 | 2010-01-06 | 中兴通讯股份有限公司 | 一种下行数据接收状态的反馈方法 |
CN103378963A (zh) * | 2012-04-27 | 2013-10-30 | 北京三星通信技术研究有限公司 | 支持tdd系统灵活变换子帧的双工方向的方法和设备 |
Non-Patent Citations (2)
Title |
---|
PANASONIC ET AL.: "Way Forward on signalling for TDD UL/DL reconfiguration", 3GPP TSG-RAN WG1 MEETING 74BIS, R1-134906, 11 October 2013 (2013-10-11), pages 1 AND 2, XP050750396 * |
See also references of EP3054734A4 * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2017024467A1 (zh) * | 2015-08-10 | 2017-02-16 | 华为技术有限公司 | 无线通信的方法、网络设备和终端设备 |
CN110739988A (zh) * | 2018-07-20 | 2020-01-31 | 上海朗帛通信技术有限公司 | 一种被用于无线通信的用户设备、基站中的方法和装置 |
CN110739988B (zh) * | 2018-07-20 | 2021-04-27 | 上海朗帛通信技术有限公司 | 一种被用于无线通信的用户设备、基站中的方法和装置 |
US11064460B2 (en) | 2018-07-20 | 2021-07-13 | Shanghai Langbo Communication Technology Company Limited | Method and device in UE and base station for wireless communication |
Also Published As
Publication number | Publication date |
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BR112016009736A2 (pt) | 2018-05-02 |
EP3331302A1 (en) | 2018-06-06 |
RU2628020C1 (ru) | 2017-08-14 |
US10462826B2 (en) | 2019-10-29 |
EP3054734A1 (en) | 2016-08-10 |
MX354882B (es) | 2018-03-23 |
CN105264983B (zh) | 2019-10-15 |
EP3331302B1 (en) | 2019-08-21 |
ZA201602911B (en) | 2017-08-30 |
US20160249386A1 (en) | 2016-08-25 |
US10159095B2 (en) | 2018-12-18 |
BR112016009736B1 (pt) | 2022-06-21 |
US20190104555A1 (en) | 2019-04-04 |
EP3054734B1 (en) | 2018-01-03 |
EP3054734A4 (en) | 2016-10-05 |
CN105264983A (zh) | 2016-01-20 |
MX2016005476A (es) | 2016-12-20 |
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