CN109661830B - Method and equipment for random access configuration - Google Patents
Method and equipment for random access configuration Download PDFInfo
- Publication number
- CN109661830B CN109661830B CN201680088784.5A CN201680088784A CN109661830B CN 109661830 B CN109661830 B CN 109661830B CN 201680088784 A CN201680088784 A CN 201680088784A CN 109661830 B CN109661830 B CN 109661830B
- Authority
- CN
- China
- Prior art keywords
- random access
- response message
- preamble sequence
- access preamble
- access response
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 57
- 230000004044 response Effects 0.000 claims abstract description 184
- 238000012545 processing Methods 0.000 claims description 38
- 230000005540 biological transmission Effects 0.000 claims description 29
- 238000004891 communication Methods 0.000 description 17
- 238000010586 diagram Methods 0.000 description 15
- 230000006870 function Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000011664 signaling Effects 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention provides a method and a device for random access configuration, wherein the method comprises the following steps: the terminal equipment sets at least one receiving window of the random access response message, and judges whether the random access response message sent by the network equipment is received in the receiving window of the random access response message or not. In the wave beam scene, the invention sets a receiving window for the terminal equipment to carry out the random access response message so as to receive the random access response message sent by the network equipment.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method and a device for random access configuration.
Background
In a Long Term Evolution (LTE) system, random access is divided into two forms, namely contention random access and non-contention random access. As shown in fig. 1a, a Terminal Device (Terminal Device) sends a Random Access Preamble (RAP) to a network Device (Evolved Node B, eNB) in an uplink; the eNB sends a Random Access Response (RAR) to the terminal equipment; the terminal equipment sends a Message3 to the eNB (Message3, MSG 3); the eNB sends a conflict resolution message 4 to the terminal device (MSG4), and the terminal device that won the conflict sends an Acknowledgement (ACK) to the eNB. In the non-contention access process, as shown in fig. 1b, an eNB allocates a random access preamble sequence to a terminal device, and the terminal device sends a preamble allocated by a base station to the eNB; the eNB sends RAR to the terminal equipment.
In the two random access manners, the terminal device needs to monitor whether a Physical Downlink Control Channel (PDCCH) has an RAR message replied by the eNB, and a time window length for monitoring the RAR is a random access message response receiving window size (Ra-ResponseWindowSize) subframes.
Currently, in the field of high-frequency wireless communication, using Beamforming (Beamforming) technology, a network device and a terminal device may transmit data in a Beam manner. The beams may be transmitted in a time-division multiplexed manner, i.e., only one or more beams are transmitted in a unit of time, and another one or more beams are transmitted in the next unit of time. Since the channel quality on each Beam on the network device and the terminal device is not the same, Beam scanning (Beam scanning) needs to be performed on the network device and the terminal device to select the best Beam for communication.
However, when the network device and the terminal device perform random access through Beam, how the terminal device performs setting of the receiving window of the RAR becomes a problem to be solved urgently.
Disclosure of Invention
In order to solve the above problem, the present application provides a method and a device for providing random access window configuration, where in the method, a random access response message receiving window is set in a scenario where a terminal device performs random access through a beam.
A first aspect of the present application provides a method for random access configuration, the method comprising: the terminal equipment sets at least one receiving window of the random access response message; and the terminal equipment judges whether the random access response message sent by the network equipment is received in the receiving window of the random access response message.
In a first possible implementation manner of the first aspect, the method further includes: the terminal equipment sends at least one random access preamble sequence to the network equipment; wherein, the number of the receiving windows of the random access response message corresponds to the number of the random access preamble sequences one by one.
With reference to the first possible implementation manner of the first aspect, in a second possible implementation manner of the first aspect, the method further includes: the terminal equipment judges whether the network equipment supports the receiving mode of the wave beam or not; if the network equipment supports a beam receiving mode, the terminal equipment sends the random access preamble sequence to the network equipment in a beam mode; and if the network equipment does not support the beam receiving mode, the terminal equipment sends the random access preamble sequence to the network equipment in an omnidirectional antenna mode.
With reference to the first possible implementation manner of the first aspect, in a third possible implementation manner of the first aspect, the method further includes: the terminal equipment judges whether the wireless channels have mutual difference; if the wireless channels have the mutual difference, the terminal equipment selects a receiving wave beam with better channel quality, selects a sending wave beam with better channel quality according to the receiving wave beam, and sends the random access preamble sequence on the sending wave beam with better channel quality; and if the wireless channels do not have the mutual difference, the terminal equipment sends the random access preamble sequence on a plurality of sending beams.
With reference to the first or the second possible implementation manner of the first aspect, in a fourth possible implementation manner of the first aspect, the terminal device sends at least one random access preamble sequence to the network device on at least one sending beam; wherein the number of the random access preamble sequences corresponds to the number of the transmission beams one to one.
With reference to the first aspect or the first or second possible implementation manner of the first aspect, in a fifth possible implementation manner of the first aspect, the setting, by the terminal device, a receive window of at least one random access response message includes:
when the random access preamble sequence is multiple, after the terminal device sends the random access preamble sequence each time, setting a receiving window of a random access response message, so that the terminal device receives the random access response message sent by the network device in the receiving window of the random access response message; and the interception time of the random access response message receiving window is initial interception time.
With reference to the first aspect or the first or second possible implementation manner of the first aspect, in a sixth possible implementation manner of the first aspect, the setting, by the terminal device, a receive window of at least one random access response message includes: after the terminal equipment sends the first random access preamble sequence on a sending wave beam, a receiving window of a random access response message is set, so that the terminal equipment receives the random access response message sent by the network equipment in the receiving window of the random access response message; wherein a size of a reception window of the random access response message is based on a number of beams transmitting the random access preamble sequence, one or both of the numbers of the random access preamble sequences being determined.
With reference to the sixth possible implementation manner of the first aspect, in a seventh possible implementation manner of the first aspect, the size of the receive window of the random access response message is determined based on the number of beams used to transmit the random access preamble sequence, and one or two of the number of the random access preamble sequences are specifically: the receiving window size is T-T1 + (N-1) T2; t1 is the listening time of the initially set random access message response receiving window, t2 is the time interval of the terminal device sending the preamble sequence through the beam, and N is the number of the beams sending the random access preamble sequence or the number of the random access preamble sequence.
With reference to the first aspect or the first or second possible implementation manner of the first aspect, in an eighth possible implementation manner of the first aspect, the method further includes: when the terminal equipment does not receive the random access response message sent by the network equipment in the random access response message receiving window, the terminal equipment adds 1 to the value of a preamble sequence transmission counter;
the terminal device sets the initial value of the preamble sequence transmission counter to be 1, and when the value of the preamble sequence transmission counter reaches the maximum random access attempt number value, the terminal device stops sending the random access preamble sequence to the network device.
With reference to the eighth possible implementation manner of the first aspect, in a ninth possible implementation manner of the first aspect, the method further includes: when the value of the preamble sequence transmission counter is greater than 1, the terminal device sends a random access preamble sequence to the network device after a backoff time t 3; t3 is not less than 1 and not more than BI, BI is the maximum backoff time, and the maximum backoff time is carried in the random access response message.
With reference to the ninth possible implementation manner of the first aspect, in a tenth possible implementation manner of the first aspect, the method includes one of the following steps: the terminal equipment sends the same random access preamble sequence on all wave beams; the terminal equipment adds the terminal equipment identification on the sent random access preamble sequence; the terminal equipment sends the same random access preamble sequence on the same time-frequency resource so as to avoid the network equipment from sending repeated random access response messages to the terminal equipment.
In an eleventh possible implementation manner of the first aspect, one random access response message includes at least one timing advance and/or at least one radio network temporary identifier; wherein the value of the timing advance is determined by the time of arrival of the random access preamble sequence at the network device; the number of the time advance or the number of the wireless network temporary identifications corresponds to the number of the random access preamble sequences one by one.
A second aspect of the present application provides a method for random access configuration, the method comprising: the network equipment determines at least one receiving window, wherein one receiving window is used for sending a random access response message to the terminal equipment; and the network equipment sends the random access response message to the terminal equipment in at least one receiving window.
A third aspect of the present application provides an apparatus for random access configuration, the apparatus comprising a processing unit; the processing unit is configured to set a receiving window of at least one random access response message; the processing unit is further configured to determine whether the random access response message sent by the network device is received in the receiving window of the random access response message.
A fourth aspect of the present application provides an apparatus for random access configuration, where the apparatus includes a processing unit and a sending unit; the processing unit is configured to determine at least one receiving window, where one of the receiving windows is used to send a random access response message to the terminal device; and the sending unit is used for sending the random access response message to the terminal equipment in at least one receiving window.
A fifth aspect of the present application provides a physical device for random access window configuration, including a processor, a memory, and a communication interface, where the memory is used to store computer instructions, the communication interface is used to communicate with an external device, and the processor is used to execute the computer instructions; the processor executes the following instructions:
setting a receiving window of at least one random access response message;
and judging whether the random access response message sent by the network equipment is received in a receiving window of the random access response message.
A sixth aspect of the present application provides an entity apparatus for random access window configuration, including a communication module, a processor, and a memory; wherein the communication unit is used for communicating with an external device, the memory is used for storing computer instructions, and the processor is used for executing the computer instructions; the processor executes the following instructions:
determining at least one receiving window, wherein one receiving window is used for sending a random access response message to the terminal equipment;
and the network equipment sends the random access response message to the terminal equipment in at least one receiving window.
The method and the device have the advantages that the receiving window for the random access response message of the terminal device is set, so that the network device and/or the terminal device can use the receiving window.
Drawings
Fig. 1a is a schematic diagram of a contention random access procedure signaling provided in the prior art;
fig. 1b is a signaling diagram of a non-contention random access procedure provided in the prior art;
fig. 2a is a schematic diagram of a random access scenario in a beam scenario provided in the prior art;
fig. 2b is a schematic diagram of a random access scenario in another beam scenario provided in the prior art;
fig. 2c is a schematic diagram of a random access scenario in another beam scenario provided in the prior art;
fig. 3 is a flowchart illustrating a method for random access configuration according to an embodiment of the present invention;
fig. 4a is a schematic diagram of a random access configuration structure according to an embodiment of the present invention;
fig. 4b is a schematic diagram of another random access configuration structure according to an embodiment of the present invention;
fig. 4c is a schematic diagram of another random access configuration structure according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a random access configuration apparatus according to an embodiment of the present invention;
fig. 6 is a flowchart illustrating another random access configuration method according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of another random access configuration apparatus according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of an entity apparatus of a random access configuration according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of an entity apparatus of another random access configuration according to an embodiment of the present invention.
Detailed Description
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the present invention and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items. It should also be understood that the terms "first" and "second" are also used herein to distinguish one term from another in a descriptive sense for the convenience of the reader and should not be construed as limiting the term.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
The Radio Access Node (RAN) according to the embodiment of the present invention is a device deployed in a Radio Access network to provide a wireless communication function for a terminal device. The wireless network access devices may include various forms of macro wireless network access devices, micro wireless network access devices, relay stations, access points, and the like. In systems using different Radio access technologies, names of devices having functions of Radio network access devices may be different, for example, in an LTE network, the device is called an Evolved node B (eNB or eNodeB), in a fifth generation 5G or NR network, the device is called a New Radio network access device (NR-NB), and so on. For convenience of description, terminal devices are collectively referred to as terminal devices, and apparatuses for providing a wireless communication function for a terminal device are collectively referred to as network devices in the embodiments of the present invention.
In the implementation of the present invention, the terminal device may be a mobile phone, a tablet computer, a palm computer, a Personal Digital Assistant (PDA), or other terminal devices having a function of installing application software, which is not limited in this respect.
The wave Beam (wave Beam) refers to a shape formed in space by electromagnetic waves emitted from a transmitting antenna; the reception beam is a shape formed by the electromagnetic wave of the reception antenna. The beam is a gain that produces directivity to the signal, so the principle of the transmit beam and the receive beam is similar. The beam transmits data by time division multiplexing, frequency division multiplexing, or space division multiplexing, or any combination of the three.
Fig. 2a-2c are schematic diagrams of 3 random access scenarios in a beam scenario in the prior art. Since the channel quality of the network device and the terminal device on each Beam is different, the network device and the terminal device select the best Beam for communication or select the best beams for communication through Beam scanning (Beamsweeping). In fig. 2a-2c, the black beams are the beams that transmit or receive messages.
As shown in fig. 2a, in a first step, a terminal device sends (Transmit, TX) a Preamble to a network device through multiple beams Beam, where the Preamble is transmitted in an uplink Random Access Channel (RACH). The network device needs to continuously Receive (Receive, RX) multiple beams, and due to different channel qualities of different beams, the network device can only Receive the Preamble sent by the terminal device on a limited number of beams. The network device may label the best Beam or beams for the network device to prepare for the next time data is received. And secondly, the network equipment replies RAR to the terminal equipment. Since the network device does not know which Beam of the terminal device receives the best signal. The network device needs to send random access responses RAR at all beams. If no optimization is used, the terminal device does not know which Downlink (DL) Beam has better reception quality, so the terminal device needs to receive at all beams. Thirdly, if the RAR does not carry the best information about the Beam received by the network device on the Uplink (UL), the terminal device needs to send a third message Msg3 on all beams. For a network device, the network device may receive msg3 on the Best Beam (Best UL RX Beam) because it already knows at the time of receiving the Preamble at which uplink UL receive Beam the Best quality information was received. And fourthly, the network equipment selects Beam to send and simultaneously performs the second step, and the terminal equipment knows the best DL to receive the Beam when receiving the RAR, so that the Msg4 can be received at the best DL to receive the Beam.
As shown in fig. 2b, in the first step, the terminal device sends a Preamble to the network device through a plurality of beams. The network device needs to continuously receive a plurality of beams, and the network device can only receive the Preamble sent by the terminal device on a limited number of beams due to different channel qualities of different beams. The network device may label the best Beam or beams for the network device to prepare for the next time data is received. And secondly, the network equipment replies RAR to the terminal equipment. Since the network device does not know which Beam of the terminal device receives the best signal. The network device needs to send RARs at all beams. Meanwhile, the RAR may carry network equipment to receive the best Beam information in the Preamble, so that the terminal equipment may use the message when sending the message. DL synchronization information (Sync Message) or Broadcast Message (Broadcast Message) is transmitted by Beam, the terminal device scans for a plurality of times and then finds which Beam has the best signal, so as to receive the synchronization or Broadcast Message, and thus, the terminal device can receive the best Beam. The DL synchronization or broadcast message includes a UL grant message (UL grant), a location message (TA), a random access Preamble sequence identification (RAPID), and Time-frequency information of a Preamble sequence (Time/Freq Info of Preamble). Thirdly, because the RAR carries the best information about the UL reception Beam of the network device, the terminal device can deduce the Beam sent by the terminal device corresponding to the RAR according to the time-frequency information about the best UL reception Beam of the network device, that is, the Beam with the best communication quality when the terminal device transmits uplink. The end device may send Msg3 at the optimal Beam. For a network device, the network device may receive msg3 on the best Beam because it already knows at which UL the best quality information was received on when receiving the Preamble. Meanwhile, the terminal device knows the Best downlink receiving Beam, can deduce the Best downlink transmitting Beam of the network device according to the received time-frequency information, and transmits the identifier (Best DL TX Beam ID) of the Best downlink transmitting Beam to the network device, so that the network device can transmit information for use. Step four, the network device selects Beam to send, and simultaneously with the step two, because the terminal device knows the best DL to receive Beam when receiving RAR, Msg4 can be received at the best DL Beam; the network device sends Msg4 on the best downlink to send Beam.
As shown in fig. 2c, in the first step, the terminal device sends a Preamble to the network device through a plurality of beams, and at the same time, the terminal device is carried in the Preamble and preferably receives Beam information of the beams. The network device needs to continuously receive a plurality of beams, and the network device can only receive the Preamble sent by the terminal device on a limited number of beams due to different channel qualities of different beams. The network device may label the best Beam or beams for the network device to prepare for the next time data is received. The terminal equipment sends the Best DL TX Beam ID of the network equipment to the network equipment. And secondly, the network equipment replies RAR to the terminal equipment. The network device transmits the RAR message with the Beam with the Best communication quality according to the Best DL TX Beam ID. Since the network device obtains the Beam information that the terminal device receives best DL through the Preamble information, the network device needs to send an RAR on the best Beam of the terminal device. Meanwhile, the RAR may carry network equipment to receive the best Beam information in the Preamble, so that the terminal equipment may use the message when sending the message. Thirdly, because the RAR carries the information about which UL receives Beam is the best for the network device, the terminal device can send Msg3 at the optimal Beam. For a network device, the network device may receive msg3 on the best Beam because it already knows at which UL the best quality information was received on when receiving the Preamble. And fourthly, the network equipment selects Beam to send and simultaneously performs the second step, and the terminal equipment knows the best DL to receive the Beam when receiving the RAR, so that the Msg4 can be received at the best DL to receive the Beam.
It should be noted that the terminal device or the network device has one or more beams for transmitting and receiving messages. The implementation of the present invention does not limit the number of beams of the terminal device or the network device.
In the Beam scenario, the terminal device starts a Contention Resolution Timer mac-context Resolution Timer immediately after sending the MSG3 message, and then restarts the Timer each time the MSG3 is retransmitted, and the terminal device needs to listen to a collision Resolution (context Resolution) message MSG4 returned by the network device within the time. If the terminal device receives a conflict Resolution message returned by the Network device in the mac-context Resolution Timer, and the terminal device identifier carried in the conflict Resolution message is consistent with the terminal device identifier sent to the Network device by the terminal device in the MSG3, the terminal device wins the random access conflict of the time, the random access is successful, and a Temporary cell-Radio Network Temporary identifier (cell-Radio Network Temporary Identity) obtained in the RAR message is set as the C-RNTI.
With respect to how the terminal device sets the receiving window of the random access response message in the beam scenario, the following takes fig. 3 as an example to describe an embodiment of the present invention. Fig. 3 is a flowchart illustrating a method for providing a random access window configuration according to an embodiment of the present invention.
It should be noted that the receiving window of the random access response message may be set by the terminal device, or may be sent to the terminal device by the network device through a message, where the message indicates the parameters of the receiving window.
As shown in fig. 3, the method comprises steps S301-S302:
s301, the terminal device sets at least one receiving window of the random access response message.
Before the step, the terminal equipment sends at least one random access preamble sequence to the network equipment, and the number of the receiving windows of the random access response message corresponds to the number of the random access preamble sequences one by one. And the terminal equipment sends at least one random access preamble sequence to the network equipment on at least one sending beam, and the number of the random access preamble sequences corresponds to the number of the sending beams one to one.
The terminal equipment sends a random access Preamble sequence Preamble through one or more beams, and the random Preamble sequence on each beam can be the same or different. However, when the terminal device sends multiple preambles, the network device may receive one or multiple preambles at the same time, and the number of preambles received by the network device depends on the reception quality of the uplink beam of the network device. When the network device receives multiple preambles, if the network device replies a RAR to each Preamble, the network device may send multiple RARs to the same terminal device, which may cause greater redundancy. Therefore, the network device needs to distinguish which preambles are sent by the same terminal device.
Therefore, the terminal device transmits the same random access preamble sequence on all beams; or the terminal equipment adds the terminal equipment identification on the sent random access preamble sequence; or the terminal device sends the same preamble sequence on the same time-frequency Resource, for example, after the network device receives and identifies the preamble sequence sent by the terminal device in the same subframe number, for example, the nth subframe of each subframe, or in the same frequency domain position, for example, in the mth Physical Resource Block (PRB), only one random access response message needs to be sent to the terminal device, so that the network device is prevented from sending repeated random access response messages to the same terminal device.
S302, the terminal device judges whether the random access response message sent by the network device is received in the receiving window of the random access response message.
In an example, when the number of the random access preamble sequences is multiple, the terminal device sets a receiving window of a random access response message after sending the random access preamble sequence each time, and a listening time of the receiving window of the random access response message is an initial listening time. As shown in fig. 4a, 41 in the terminal device is a time when the Physical Random Access Channel (PRACH) is transmitted, and 42 is a time when the terminal device transmits other data. 45 is the total time length of the whole PRACH window, 43 is the PRACH for sending the Preamble in one beam, and 44a is the receiving window of the random access response message in one beam. Each beam maintains an RAR receiving window for receiving RAR messages sent by the network device.
In another example, after the terminal device sends the first random access preamble sequence, a receiving window of the random access response message is set, so that the terminal device receives the random access response message sent by the network device within the receiving window of the random access response message. The size of the reception window is determined by one or both of the number of beams transmitting the random access preamble sequence and the number of the random access preamble sequences. For example: the size of the receive window is T1+ (N-1) T2. t1 is the listening time of the initially set random access message response receiving window, i.e. the size of the random access response receiving window, t2 is the time interval at which the terminal device sends the preamble sequence through the beam, and N is the number of the terminal device sending the preamble sequence through the beam or the number of the beams sending the random access preamble sequence. As shown in fig. 4b, 44b is the listening time of the random access message response receiving window initially set, and 46 is the expanded RAR receiving window time. For example: the terminal equipment transmits Preamble1 on Beam1 at time T1, transmits Preamble2 on Beam2 at time T2, T2 is T1+ X, X is the time interval between Beam1 and Beam2 for transmitting the Preamble, and Preamble1 and Preamble2 may be the same. The terminal device starts to listen to the random access response message after T1+ K, K is a time interval from sending the Preamble to starting to listen to the random access response message, the time length of the listening is T1+1 × X, T1 is the listening time of the initial RAR receiving window, and the network device notifies the terminal device through a broadcast message or a radio resource control dedicated signaling.
In another example, the terminal device sets a receiving window of the random access response message after sending the first random access preamble sequence; after the terminal equipment continues to send the random access preamble sequence to the network equipment, the terminal equipment restarts a clock of a random access response message receiving window and starts to count again from the starting time of sending the random access preamble sequence; wherein, the listening time of the random access Response message receiving Window is an initial listening time (Ra-Response Window Size). For example: as shown in fig. 4c, Beam1 sends Preamble1, Beam2 sends Preamble2, 44c is the initial sensing time of Preamble1, the sensing time window of Preamble1 is [ T1+ K, T1+ M ], and the sensing time window of Preamble2 is [ T2+ K, T2+ M ]. When the terminal equipment starts listening for Preamble1, the clock is turned on at time T1+ K, but when the terminal equipment runs to time T2+ K, the clock is restarted, and the terminal equipment starts to count again from time T2+ K. That is, the terminal device may sense the end of time T2+ M all the time, instead of the end of time T1+ M. In the above example, when the random access response message receiving windows on all beams of the terminal device do not receive the random access response message sent by the network device, and the random access of the terminal device fails, the terminal device adds 1 to the value of the Preamble _ transmission _ Counter; the terminal equipment sets the initial value of a leader sequence transmission counter to be 1, and when the value of the leader sequence transmission counter reaches the value of the maximum random access attempt times (Preamble TransMax), the terminal equipment stops sending the random access leader sequence to the network equipment.
In another example, after the terminal device sends a plurality of preambles to the network device, the RAR listening window is opened. The receive window size is obtained via a broadcast message, and/or a radio resource control message. For example: after the terminal equipment sends 5 preambles to the network equipment, a RAR listening window is opened.
In addition, the terminal device is provided with a backoff mechanism, the terminal device does not execute a random access attempt immediately after the random access fails, a random number is randomly generated according to the size of a Backoff Instruction (BI), and then the terminal device backs up for a certain time according to the random number and then performs a random access process. In the embodiment of the present invention, when the terminal device retransmits the Preamble to the network device, and when the value of the Preamble sequence transmission counter is greater than 1, the terminal device can transmit the random access Preamble sequence to the network device after the back-off time t 3. T3 is more than or equal to 1 and less than or equal to BI, and BI is the maximum backoff time carried in the random access response message.
It should be noted that, in the prior art, the time Window for monitoring RAR set by the system is started from the subframe +3 subframes where the terminal device sends the Preamble, and the length is Ra-Response Window Size subframes. If the RAR returned by the network equipment is not received in the period, the access is considered to be failed. If the access fails, the maximum number of attempts, Preamble TransMax, has not been reached, then the terminal device can increase the power to send the Preamble on the basis of the last sending power, thereby increasing the success rate of sending. In the embodiment of the invention, the terminal equipment sets the initial transmitting power value of the Preamble according to the Preamble _ Transmission _ Counter. In the embodiment of the present invention, the initial listening time, that is, the start of the initial Window Size, is + k (k is a natural number greater than or equal to 0) subframes after the Preamble is sent from the terminal device, and the length is Ra-Response Window Size.
In the above method, further comprising: and before the terminal equipment sends the random access preamble sequence, judging whether the network equipment supports the receiving mode of the wave beam. If the network equipment supports a beam receiving mode, the terminal equipment sends the random access preamble sequence to the network equipment in a beam mode; and if the network equipment does not support a multi-beam receiving mode, the terminal equipment sends the random access leader sequence to the network equipment in an omnidirectional antenna mode.
It should be noted that the method for the terminal device to acquire whether the network device supports beam reception includes that the terminal device listens to a broadcast message of the network device, and the terminal device acquires from a configuration message, or switches over a command, and so on. Beam reception is a capability of a network device, and if supported, a terminal device transmits data to a base station in a beam manner, and the network device can receive the data; if not, the terminal equipment transmits in a non-beam mode, namely an omnidirectional antenna transmission mode.
In the above method, further comprising: and before the terminal equipment sends the random access preamble sequence, judging whether the wireless channels have the mutual difference. If the wireless channels have the mutual difference, the terminal equipment selects a receiving wave beam with better channel quality, selects a sending wave beam with better channel quality according to the receiving wave beam, and sends the random access leader sequence; and if the wireless channels do not have the mutual difference, the terminal equipment sends the random access preamble sequence on a plurality of sending beams.
The reciprocity means that the device receiving the data can determine the condition of the transmission channel according to the condition of the reception channel. The terminal equipment further judges the quality of the channel for sending the Beam according to the received channel of the network equipment; similarly, the network device may obtain the quality of the transmission channel of the terminal device according to the quality of the Beam channel received from the terminal device. The terminal equipment can select a mode of sending the Preamble according to the reciprocity. The method for the terminal device to obtain the network reciprocity may be through a frame structure or through a broadcast message.
In the above method, one of the random access response messages may include at least one timing advance and/or at least one radio network temporary identity. The value of the timing advance is determined by the time of arrival of the random access preamble sequence at the network device; the number of the time advance or the number of the wireless network temporary identifications corresponds to the number of the random access preamble sequences one by one. It should be noted that, each Time the terminal device sends a Preamble, if the network device receives the Preamble, a Time Advance (TA) and a radio network Temporary identifier (Cell radio network Temporary identifier) are correspondingly generated. When the network device receives multiple preambles, the random access response messages of the multiple preambles may be combined into one message to be sent. The time advance needs to be calculated according to the time when the Preamble reaches the network device, and the wireless network temporary identifier is allocated by the network device according to the number of the preambles.
The following describes an apparatus for random access configuration according to an embodiment of the present invention, taking fig. 5a-5b as an example.
As shown in fig. 5a, an apparatus for random access configuration includes a sending unit 501, a processing unit 502, and a receiving unit 503.
The processing unit 502 is configured to set a receiving window of at least one random access response message; and then judging whether the random access response message sent by the network equipment is received in a receiving window of the random access response message.
The apparatus further includes a sending unit 501, configured to send at least one random access preamble sequence to a network device. The number of the receiving windows of the random access response message corresponds to the number of the random access preamble sequences one by one.
In an example, the processing unit 502 determines whether the network device supports a beam receiving manner; if the network equipment supports a beam receiving mode, the terminal equipment sends the random access preamble sequence to the network equipment in a beam mode; and if the network equipment does not support a multi-beam receiving mode, the terminal equipment sends the random access preamble sequence to the network equipment in an omnidirectional antenna mode.
In one example, the processing unit determines whether the network devices have mutual identity; if the network equipment has the mutual difference, the terminal equipment selects a receiving wave beam with better channel quality, selects a sending wave beam with better channel quality according to the receiving wave beam and sends the random access leader sequence; and if the network equipment does not have the mutual difference, the terminal equipment sends the random access preamble sequence on a plurality of sending beams.
In an example, the transmitting unit 501 is further configured to transmit the same random access preamble sequence on all beams; or adding the terminal equipment identification on the sent random access preamble sequence; or sending the same random access preamble sequence on the same time-frequency resource to avoid the network device sending repeated random access response messages to the terminal device.
In an example, the transmitting unit transmits at least one random access preamble sequence to the network device on at least one transmission beam, where the number of the random access preamble sequences corresponds to the number of the transmission beams.
In an example, when the number of the random access preamble sequences is multiple, the processing unit sets a receiving window of a random access response message after the terminal device sends the random access preamble sequence each time; and the interception time of the random access response message receiving window is initial interception time, and the number of the receiving windows of the random access response message is the same as that of the random access preamble sequence.
In another example, after the terminal device transmits the first random access preamble sequence, the processing unit sets a receive window of a random access response message, where the size of the receive window of the random access response message is determined by one or both of the number of beams transmitting the random access preamble sequence and the number of the random access preamble sequence. For example: the size of the receiving window is T-T1 + (N-1) T2; t1 is the listening time of the initially set random access message response receiving window, t2 is the time interval of the terminal device sending the preamble sequence through the beam, and N is the number of the terminal device sending the preamble sequence through the beam or the number of the beams sending the random access preamble sequence.
In another example, after the terminal device sends the first random access preamble sequence, the processing unit sets a receiving window of a random access response message. After the terminal equipment continues to send the random access preamble sequence to the network equipment, the terminal equipment restarts a clock of a random access response message receiving window and starts to count again from the starting time of sending the second random access preamble sequence; and the interception time of the random access response message receiving window is initial interception time.
In an example, the processing unit 502 is further configured to, when the terminal device does not receive the random access response message sent by the network device in the random access response message receiving window, add 1 to a preamble sequence transmission counter by the terminal device; the terminal device sets the initial value of the preamble sequence transmission counter to be 1, and when the value of the preamble sequence transmission counter reaches the maximum random access attempt number value, the terminal device stops sending the random access preamble sequence to the network device.
In an example, the processing unit 502 is further configured to, when the value of the preamble sequence transmission counter is greater than 1, send a random access preamble sequence to the network device after a backoff time t3 by the terminal device; wherein t3 is more than or equal to 1 and less than or equal to BI, and BI is the maximum rollback time.
In the above apparatus, the receiving unit 503 receives a random access response message sent by the network device. One of said random access response messages comprises at least one timing advance and/or at least one invalid network temporary identity; and the value of the time advance is determined by the time of arrival of the random access preamble sequence at the network equipment; the number of the time advance or the number of the wireless network temporary identifications corresponds to the number of the random access preamble sequences one by one.
Another random access method is described below with reference to fig. 6 as an example. Fig. 6 is a flowchart illustrating another random access configuration method according to an embodiment of the present invention. As shown in fig. 6, the method includes steps S601-S602.
S601, the network device determines at least one receiving window, and one of the receiving windows is used for sending a random access response message to the terminal device.
In one example, the network device determining at least one receive window comprises: when the random access preamble sequence is multiple, after the network device receives the random access preamble sequence each time, setting a receiving window of a random access response message, so that the network device sends the random access response message to the terminal device in the receiving window; and the size of the random access response message receiving window is the size of an initial window. The initial Window Size is Ra-Response Window Size, as shown in step S302, which is not described herein.
In one example, the network device determining at least one receive window comprises: after the network device receives the first random access preamble sequence on a receiving beam, setting a receiving window of a random access response message, so that the network device sends the random access response message to the terminal device in the receiving window of the random access response message; wherein a size of a reception window of the random access response message is based on a number of beams transmitting the random access preamble sequence, one or both of the numbers of the random access preamble sequences being determined. For example: the size of a receiving window of the random access response message is T-T1 + (N-1) T2; wherein t1 is the size of a random access message response receiving window initially set, t2 is a time interval when the terminal device transmits a preamble sequence through a beam, and N is the number of beams transmitting the random access preamble sequence or the number of the random access preamble sequence.
S602, the network device sends the random access response message to the terminal device in at least one receiving window.
In the above method, the method further comprises: and the network equipment receives at least one random access preamble sequence sent by the terminal equipment. And the number of the random access preamble sequence receiving windows corresponds to the number of the random access preamble sequences one to one.
In the above method, the network device receives the random access preamble sequence sent by the terminal device on at least one receiving beam. And the number of the random access preamble sequences corresponds to the number of the receiving beams one to one.
In the above method, one of the random access response messages includes at least one timing advance and/or at least one invalid network temporary identity; wherein the time when the network device receives the random access preamble sequence determines the value of the timing advance; the number of the time advance or the number of the wireless network temporary identifications corresponds to the number of the random access preamble sequences one by one.
Fig. 7 is a schematic structural diagram of another random access configuration apparatus according to an embodiment of the present invention; as shown in fig. 7, the network device includes a transmitting unit 701, a processing unit 702, and a receiving unit 703.
The processing unit 702 determines at least one receiving window, and one of the receiving windows is used for sending a random access response message to the terminal device.
The sending unit 701 sends the random access response message to the terminal device within at least one receiving window.
In the above apparatus, the receiving unit 703 is configured to receive at least one random access preamble sequence sent by the terminal device; the number of the random access preamble sequence receiving windows corresponds to the number of the random access preamble sequences one to one.
The receiving unit is further configured to receive the random access preamble sequence sent by the terminal device on at least one receiving beam. And the number of the random access preamble sequences corresponds to the number of the receiving beams one to one.
In one example, the processing unit 702 determining at least one receive window includes: when the random access preamble sequence is multiple, after the network device receives the random access preamble sequence each time, setting a receiving window of a random access response message, so that the network device sends the random access response message to the terminal device in the receiving window; and the size of the random access response message receiving window is the size of an initial window.
In one example, the processing unit 702 determining at least one receive window includes: after the network device receives the first random access preamble sequence on a receiving beam, setting a receiving window of a random access response message, so that the network device sends the random access response message to the terminal device in the receiving window of the random access response message; wherein a size of a reception window of the random access response message is based on a number of beams transmitting the random access preamble sequence, one or both of the numbers of the random access preamble sequences being determined. For example: the processing unit sets the size of a receiving window to be T-T1 + (N-1) T2; t1 is the size of the initially set random access message response receiving window, t2 is the time interval at which the terminal device transmits the preamble sequence through the beam, and N is the number of beams transmitting the random access preamble sequence or the number of transmitting the random access preamble sequence.
In the above apparatus, the sending unit is configured to send the random access response message to the terminal device; wherein one of the random access response messages comprises at least one timing advance and/or at least one invalid network temporary identity; and the time when the network equipment receives the random access preamble sequence determines the value of the time advance; the number of the time advance or the number of the wireless network temporary identifications corresponds to the number of the random access preamble sequences one by one.
The following describes the structure of the terminal entity apparatus according to the embodiment of the present invention, taking fig. 8 to 9 as an example. As shown in fig. 8, the terminal device includes a processor 82, a memory 83, a communication interface 81; the memory 83 is configured to store computer instructions, the communication interface 81 is configured to communicate with an external device, and the processor 82 is configured to execute the computer instructions:
setting a receiving window of at least one random access response message;
and judging whether the random access response message sent by the network equipment is received in a receiving window of the random access response message.
Fig. 9 is a schematic diagram of a physical device of a network device, which includes a communication module 91, a processor 92, and a memory 93. A communication unit 91 for communicating with an external device, a memory 93 for storing computer instructions, and a processor 92 for executing the computer instructions; the processor executes the following instructions:
determining at least one receiving window, wherein one receiving window is used for sending a random access response message to the terminal equipment;
and the network equipment sends the random access response message to the terminal equipment in at least one receiving window.
In the wave beam scene, the invention sets a receiving window for the terminal equipment to carry out the random access response message so as to receive the random access response message sent by the network equipment.
Those of skill would further appreciate that the various illustrative components and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative components and steps have been described above generally in terms of their functionality in order to clearly illustrate this interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied in hardware, a software module executed by a processor, or a combination of the two. A software module may reside in Random Access Memory (RAM), memory, Read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form known in the art.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (30)
1. A method for random access configuration, the method comprising:
the terminal equipment sets at least one receiving window of the random access response message;
the terminal equipment judges whether the random access response message sent by the network equipment is received in a receiving window of the random access response message; wherein,
the terminal device setting a receiving window of at least one random access response message comprises: when the random access preamble sequence is a plurality of random access preamble sequences sent by a plurality of wave beams, the terminal device sets a receiving window of a random access response message after sending the random access preamble sequence each time, so that the terminal device receives the random access response message sent by the network device in the receiving window of the random access response message; wherein, the interception time of the random access response message receiving window is the initial interception time; the plurality of beams and the plurality of random access preamble sequences are in one-to-one correspondence;
or,
the terminal device setting a receiving window of at least one random access response message comprises: after the terminal equipment sends the first random access preamble sequence on a sending wave beam, a receiving window of a random access response message is set, so that the terminal equipment receives the random access response message sent by the network equipment in the receiving window of the random access response message; wherein a size of a reception window of the random access response message is based on a number of beams transmitting the random access preamble sequence, one or both of the numbers of the random access preamble sequences being determined.
2. The method of claim 1, further comprising: the terminal equipment sends at least one random access preamble sequence to the network equipment; wherein,
the number of the receiving windows of the random access response message corresponds to the number of the random access preamble sequences one by one.
3. The method of claim 2, further comprising: the terminal equipment judges whether the network equipment supports the receiving mode of the wave beam or not;
if the network equipment supports a beam receiving mode, the terminal equipment sends the random access preamble sequence to the network equipment in a beam mode;
and if the network equipment does not support the beam receiving mode, the terminal equipment sends the random access preamble sequence to the network equipment in an omnidirectional antenna mode.
4. The method of claim 2, further comprising: the terminal equipment judges whether the wireless channels have mutual difference;
if the wireless channels have mutual difference, the terminal equipment selects a receiving beam with better channel quality in the network equipment, selects a sending beam with better channel quality according to the receiving beam and sends the random access preamble sequence;
and if the wireless channels do not have the mutual difference, the terminal equipment sends the random access preamble sequence on a plurality of sending beams.
5. A method according to claim 2 or 3, wherein the terminal device transmits at least one of the random access preamble sequences to the network device on at least one transmit beam; wherein the number of the random access preamble sequences corresponds to the number of the transmission beams one to one.
6. The method according to claim 1, wherein a size of a reception window of the random access response message is determined based on a number of beams transmitting the random access preamble sequence, and one or two of the number of random access preamble sequences are specifically: the receiving window size is T-T1 + (N-1) T2;
t1 is the listening time of the initially set random access message response receiving window, t2 is the time interval of the terminal device sending the preamble sequence through the beam, and N is the number of the beams sending the random access preamble sequence or the number of the random access preamble sequence.
7. A method according to claim 1, 2 or 3, characterized in that the method further comprises:
when the terminal equipment does not receive the random access response message sent by the network equipment in the random access response message receiving window, the terminal equipment adds 1 to the value of a preamble sequence transmission counter;
the terminal device sets the initial value of the preamble sequence transmission counter to be 1, and when the value of the preamble sequence transmission counter reaches the maximum random access attempt number value, the terminal device stops sending the random access preamble sequence to the network device.
8. The method of claim 7, further comprising:
when the value of the preamble sequence transmission counter is greater than 1, the terminal device sends a random access preamble sequence to the network device after a backoff time t 3; wherein t3 is more than or equal to 1 and less than or equal to BI, and BI is the maximum rollback time.
9. A method according to claim 2 or 3, characterized by comprising one of the following steps:
the terminal equipment sends the same random access preamble sequence on all wave beams;
the terminal equipment adds the terminal equipment identification on the sent random access preamble sequence;
the terminal equipment sends the same random access preamble sequence on the same time-frequency resource so as to avoid the network equipment from sending repeated random access response messages to the terminal equipment.
10. The method according to claim 1, wherein one of said random access response messages comprises at least one timing advance and/or at least one radio network temporary identity; wherein,
the value of the timing advance is determined by the time of arrival of the random access preamble sequence at the network device; the number of the time advance or the number of the wireless network temporary identifications corresponds to the number of the random access preamble sequences one by one.
11. A method of random access configuration, the method comprising:
the network equipment determines at least one receiving window, wherein one receiving window is used for sending a random access response message to the terminal equipment;
the network equipment sends the random access response message to terminal equipment in at least one receiving window; wherein,
the network device determining at least one receive window comprises:
when the random access preamble sequence is multiple, after the network device receives the random access preamble sequence each time, setting a receiving window of a random access response message, so that the network device sends the random access response message to the terminal device in the receiving window; wherein, the size of the random access response message receiving window is the size of an initial window;
or,
the network device determining at least one receive window comprises:
after the network device receives the first random access preamble sequence on a receiving beam, setting a receiving window of a random access response message, so that the network device sends the random access response message to the terminal device in the receiving window of the random access response message;
wherein a size of a reception window of the random access response message is based on a number of beams transmitting the random access preamble sequence, one or both of the numbers of the random access preamble sequences being determined.
12. The method of claim 11, further comprising: the network equipment receives at least one random access preamble sequence sent by the terminal equipment; wherein,
the number of the random access preamble sequence receiving windows corresponds to the number of the random access preamble sequences one to one.
13. The method of claim 12, wherein the network device receives the random access preamble sequence transmitted by the terminal device on at least one receive beam; wherein,
the number of the random access preamble sequences corresponds to the number of the receiving wave beams one to one.
14. The method according to claim 11, wherein a size of a receive window of the random access response message is determined based on a number of beams transmitting the random access preamble sequence, and one or two of the number of random access preamble sequences are specifically: the receiving window size is T-T1 + (N-1) T2;
wherein t1 is the size of a random access message response receiving window initially set, t2 is a time interval when the terminal device transmits a preamble sequence through a beam, and N is the number of beams transmitting the random access preamble sequence or the number of the random access preamble sequence.
15. The method according to claim 11, wherein one of said random access response messages comprises at least one timing advance and/or at least one radio network temporary identity; wherein,
the time when the network equipment receives the random access preamble sequence determines the value of the time advance; the number of the time advance or the number of the wireless network temporary identifications corresponds to the number of the random access preamble sequences one by one.
16. An apparatus of random access configuration, the apparatus comprising a processing unit; wherein,
the processing unit is used for setting a receiving window of at least one random access response message;
the processing unit is further configured to determine whether a random access response message sent by the network device is received in a receiving window of the random access response message; wherein,
the processing unit setting a receiving window of at least one random access response message comprises: when the random access preamble sequence is a plurality of random access preamble sequences sent by a plurality of beams, the processing unit sets a receiving window of a random access response message after sending the random access preamble sequence each time, so that the processing unit receives the random access response message sent by the network device in the receiving window of the random access response message; wherein, the interception time of the random access response message receiving window is the initial interception time; the plurality of beams and the plurality of random access preamble sequences are in one-to-one correspondence;
or,
the processing unit setting a receiving window of at least one random access response message comprises: after the processing unit sends the first random access preamble sequence on a sending beam, a receiving window of a random access response message is set, so that the processing unit receives the random access response message sent by the network device in the receiving window of the random access response message; wherein a size of a reception window of the random access response message is based on a number of beams transmitting the random access preamble sequence, one or both of the numbers of the random access preamble sequences being determined.
17. The apparatus of claim 16, further comprising a transmitting unit; wherein,
the sending unit is configured to send at least one random access preamble sequence to a network device; the number of the receiving windows of the random access response message corresponds to the number of the random access preamble sequences one by one.
18. The apparatus of claim 17, wherein the processing unit is further configured to determine whether the network device supports a beam receiving manner;
if the network equipment supports the receiving mode of the wave beam, the terminal equipment sends the random access preamble sequence to the network equipment in the wave beam mode;
and if the network equipment does not support the multi-beam receiving mode, the terminal equipment sends the random access leader sequence to the network equipment in an omnidirectional antenna mode.
19. The apparatus of claim 17, wherein the processing unit is further configured to determine whether the network devices have mutual identity;
if the network equipment has the mutual difference, the terminal equipment selects a receiving beam with better channel quality in the network equipment, selects a sending beam with better channel quality according to the receiving beam and sends the random access preamble sequence;
and if the network equipment does not have the mutual difference, the terminal equipment sends the random access preamble sequence on a plurality of sending beams.
20. The apparatus according to claim 16, wherein the processing unit is configured to set a receiving window of the random access response message as T ═ T1+ (N-1) × T2;
wherein t1 is the listening time of the initially set random access message response receiving window, t2 is the time interval of the terminal device sending the preamble sequence through the beam, and N is the number of the beams sending the random access preamble sequence or the number of the random access preamble sequence.
21. The apparatus of claim 16, 17 or 18, wherein the processing unit is further configured to:
when the terminal equipment does not receive the random access response message sent by the network equipment in the random access response message receiving window, the terminal equipment adds 1 to the value of a preamble sequence transmission counter;
the terminal device sets the initial value of the preamble sequence transmission counter to be 1, and when the value of the preamble sequence transmission counter reaches the maximum random access attempt number value, the terminal device stops sending the random access preamble sequence to the network device.
22. The apparatus of claim 21, wherein the processing unit is further configured to:
when the value of the preamble sequence transmission counter is greater than 1, the terminal device sends a random access preamble sequence to the network device after a backoff time t 3; wherein t3 is more than or equal to 1 and less than or equal to BI, and BI is the maximum rollback time.
23. The apparatus according to claim 16 or 17, wherein the sending unit is further configured to perform one of the following steps:
transmitting the same random access preamble sequence on all beams;
adding a terminal equipment identifier on the sent random access leader sequence;
and sending the same random access preamble sequence on the same time-frequency resource so as to avoid the network equipment from sending repeated random access response messages to the terminal equipment.
24. The apparatus according to claim 16 or 17, wherein the sending unit is further configured to:
transmitting at least one of the random access preamble sequences to the network device on at least one transmit beam; wherein the number of the random access preamble sequences corresponds to the number of the transmission beams one to one.
25. The apparatus of claim 16, further comprising a receiving unit configured to receive a random access response message sent by the network device; wherein,
one said random access response message comprises at least one timing advance and/or at least one radio network temporary identity; and the value of the time advance is determined by the time of arrival of the random access preamble sequence at the network equipment; the number of the time advance or the number of the wireless network temporary identifications corresponds to the number of the random access preamble sequences one by one.
26. An apparatus of random access configuration, the apparatus comprising a processing unit and a transmitting unit; wherein,
the processing unit is configured to determine at least one receiving window, where one of the receiving windows is used to send a random access response message to the terminal device;
the sending unit is configured to send the random access response message to a terminal device in at least one receiving window; the processing unit determining at least one receive window comprises:
when the random access preamble sequence is multiple, after the network device receives the random access preamble sequence each time, setting a receiving window of a random access response message, so that the network device sends the random access response message to the terminal device in the receiving window; wherein, the size of the random access response message receiving window is the size of an initial window;
or,
the processing unit determining at least one receive window comprises: after receiving the first random access preamble sequence on a receiving beam, the network device sets a receiving window of a random access response message, so that the network device sends the random access response message to the terminal device in the receiving window of the random access response message; wherein a size of a reception window of the random access response message is based on a number of beams transmitting the random access preamble sequence, one or both of the numbers of the random access preamble sequences being determined.
27. The apparatus of claim 26, further comprising a receiving unit; wherein,
the receiving unit is configured to receive at least one random access preamble sequence sent by the terminal device; the number of the random access preamble sequence receiving windows corresponds to the number of the random access preamble sequences one to one.
28. The apparatus of claim 27, wherein the receiving unit is further configured to receive the random access preamble sequence sent by the terminal device on at least one receiving beam; wherein,
the number of the random access preamble sequences corresponds to the number of the receiving wave beams one to one.
29. The apparatus of claim 26, wherein the processing unit sets a receive window size T1+ (N-1) T2;
wherein t1 is the size of a random access message response receiving window initially set, t2 is a time interval when the terminal device transmits a preamble sequence through a beam, and N is the number of beams transmitting the random access preamble sequence or the number of the random access preamble sequence.
30. The apparatus of claim 26, wherein the sending unit is configured to send the random access response message to the terminal device; wherein,
one said random access response message comprises at least one timing advance and/or at least one radio network temporary identity; and the time when the network equipment receives the random access preamble sequence determines the value of the time advance; the number of the time advance or the number of the wireless network temporary identifications corresponds to the number of the random access preamble sequences one by one.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2016/100739 WO2018058408A1 (en) | 2016-09-29 | 2016-09-29 | Random access configuration method and device thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109661830A CN109661830A (en) | 2019-04-19 |
| CN109661830B true CN109661830B (en) | 2020-08-25 |
Family
ID=61763045
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201680088784.5A Active CN109661830B (en) | 2016-09-29 | 2016-09-29 | Method and equipment for random access configuration |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN109661830B (en) |
| WO (1) | WO2018058408A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3972374B1 (en) * | 2019-05-24 | 2023-07-12 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Method and device for random access |
| WO2021212261A1 (en) * | 2020-04-20 | 2021-10-28 | 华为技术有限公司 | Communication method and communication apparatus |
| CN114080047B (en) * | 2020-08-13 | 2024-06-07 | 维沃移动通信有限公司 | Signal transmission method, terminal and network side equipment for random access |
| WO2022041138A1 (en) * | 2020-08-28 | 2022-03-03 | 华为技术有限公司 | Communication method and apparatus |
| CN116458251A (en) * | 2020-09-29 | 2023-07-18 | Oppo广东移动通信有限公司 | Random access method and terminal equipment |
| CN116133150A (en) * | 2021-11-12 | 2023-05-16 | 维沃移动通信有限公司 | Random access method, terminal and network equipment |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015005701A1 (en) * | 2013-07-10 | 2015-01-15 | Samsung Electronics Co., Ltd. | Method and apparatus for coverage enhancement for a random access process |
| CN104704884A (en) * | 2012-10-05 | 2015-06-10 | 交互数字专利控股公司 | Method and apparatus for enhancing coverage of machine type communication (mtc) devices |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101102605B (en) * | 2007-08-15 | 2011-12-07 | 中兴通讯股份有限公司 | random access method of cellular wireless communication system |
| CN101835273B (en) * | 2009-03-13 | 2015-06-03 | 中兴通讯股份有限公司 | Random access method and terminal |
| CN102026231B (en) * | 2010-12-14 | 2013-09-11 | 中国科学院声学研究所 | Method for detecting random access of wireless communication system |
| CN102647783B (en) * | 2012-04-19 | 2015-02-18 | 北京创毅讯联科技股份有限公司 | Control method for uplink time advance, base station, and terminal |
| CN103763784B (en) * | 2014-01-22 | 2017-07-18 | 东南大学 | The up-link access method of User Priority lead code distribution is distinguished for TD LTE/TD LTE A systems |
-
2016
- 2016-09-29 WO PCT/CN2016/100739 patent/WO2018058408A1/en active Application Filing
- 2016-09-29 CN CN201680088784.5A patent/CN109661830B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104704884A (en) * | 2012-10-05 | 2015-06-10 | 交互数字专利控股公司 | Method and apparatus for enhancing coverage of machine type communication (mtc) devices |
| WO2015005701A1 (en) * | 2013-07-10 | 2015-01-15 | Samsung Electronics Co., Ltd. | Method and apparatus for coverage enhancement for a random access process |
Non-Patent Citations (3)
| Title |
|---|
| Random Access Procedure in NR;Samsung;《3GPP TSG-RAN WG2 Meeting #95 R2-164695》;20160826;正文第2.1节 * |
| Random Access Procedure Remaining Issues;Huawei, HiSilicon, Neul Ltd.;《3GPP TSG-RAN WG2 NB-IoT Adhoc Meeting#2 R2-163228》;20160504;正文第2节 * |
| RAR-window monitoring in LAA;Ericsson;《3GPP TSG-RAN WG2 #94 Tdoc R2-165314》;20160826;正文第一页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109661830A (en) | 2019-04-19 |
| WO2018058408A1 (en) | 2018-04-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109661830B (en) | Method and equipment for random access configuration | |
| CN108282899B (en) | Two-step competition random access method and device | |
| CN112385299B (en) | Method and apparatus for performing random access backoff in wireless communication system | |
| EP3379858B1 (en) | Uplink access method, user equipment, and base station | |
| KR101925698B1 (en) | System and method for beam-based physical random-access | |
| CN117394892A (en) | Method for determining default uplink wave beam and user equipment thereof | |
| EP2217029A1 (en) | Method of processing in random access procedure, system and apparatus thereof | |
| US8798007B2 (en) | Handover method, radio base station, and mobile station | |
| US20190342912A1 (en) | Low-latency random access for wireless networks | |
| CN109495977A (en) | A kind of accidental access method and equipment | |
| CN109392188A (en) | Accidental access method, equipment and system | |
| US9807656B2 (en) | Method and UE for performing random access to base station, and method and base station for establishing connection with UE | |
| EP3454611B1 (en) | Ta acquisition method and device | |
| EP3531784B1 (en) | Random access method and apparatus | |
| EP4007428B1 (en) | Random access method, device, and medium | |
| CN113574958A (en) | Method and device for receiving random access response and communication system | |
| CN107969034B (en) | UE, method and device for random access in base station | |
| EP3614781A1 (en) | Random access method and terminal device | |
| CN112789933B (en) | Random access procedure | |
| JP2023519396A (en) | Method performed by terminal device and terminal device | |
| KR101502140B1 (en) | Method for processing random access, and digital signal processing apparatus | |
| CN108260180B (en) | Transmission method, station and access point | |
| CN110731120A (en) | Method, network equipment and terminal equipment for random access | |
| EP3607771B1 (en) | Methods providing primary identifications of base stations and related wireless terminals and base stations | |
| CN114747251A (en) | Communication method, device and equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |