CN108631978B - Random access method and device and method and device for allocating random access resources - Google Patents

Random access method and device and method and device for allocating random access resources Download PDF

Info

Publication number
CN108631978B
CN108631978B CN201710182283.XA CN201710182283A CN108631978B CN 108631978 B CN108631978 B CN 108631978B CN 201710182283 A CN201710182283 A CN 201710182283A CN 108631978 B CN108631978 B CN 108631978B
Authority
CN
China
Prior art keywords
random access
terminal
beam reciprocity
resource
sequence
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
Application number
CN201710182283.XA
Other languages
Chinese (zh)
Other versions
CN108631978A (en
Inventor
钱辰
喻斌
熊琦
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Samsung Electronics Co Ltd
Original Assignee
Samsung Electronics Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority to CN201710182283.XA priority Critical patent/CN108631978B/en
Application filed by Samsung Electronics Co Ltd filed Critical Samsung Electronics Co Ltd
Priority to CN202310272770.0A priority patent/CN116437492A/en
Priority to EP18772696.3A priority patent/EP3603305B1/en
Priority to KR1020197029958A priority patent/KR102608282B1/en
Priority to EP21193469.0A priority patent/EP3934339B1/en
Priority to PCT/KR2018/003546 priority patent/WO2018174687A1/en
Priority to US16/497,428 priority patent/US11224068B2/en
Publication of CN108631978A publication Critical patent/CN108631978A/en
Priority to US17/571,200 priority patent/US11882593B2/en
Application granted granted Critical
Publication of CN108631978B publication Critical patent/CN108631978B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access
    • 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
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • 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
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H04L5/0055—Physical resource allocation for ACK/NACK
    • 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
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H04L5/0057—Physical resource allocation for CQI
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/002—Transmission of channel access control information
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

A random access method and device and a method and device for allocating random access resources are provided. The random access method of the terminal comprises the following steps: when random access is carried out, if a random access response is successfully detected, a message 3 containing an indication of the terminal beam reciprocity capability is sent; and detecting the conflict resolution information to complete the random access.

Description

Random access method and device and method and device for allocating random access resources
Technical Field
The application relates to the technical field of wireless communication, in particular to a notification mode of terminal beam reciprocity capability.
Background
With the rapid development of the information industry, especially the growing demand from the mobile internet and internet of things (IoT), the future mobile communication technology is challenged with unprecedented challenges. As can be expected from the international telecommunication union ITU report ITU-R M. [ imt. Beyond 2020.Traffic ], by 2020, mobile traffic will increase nearly 1000 times in comparison to 2010 (era 4G), and the number of user equipment connections will exceed 170 billion, which will be even more dramatic as a huge number of IoT devices gradually penetrate into the mobile communication network. To address this unprecedented challenge, the communications industry and academia have developed extensive fifth generation mobile communications technology research (5G) to target the 2020. Future 5G frameworks and overall goals have been discussed in ITU's report ITU-R M. [ imt.vision ], where the 5G demand landscape, application scenarios and various important performance indicators are specified. For the new requirements in 5G, ITU's report ITU-R M [ imt. Complete TECHNOLOGY TRENDS ] provides information related to the technical trend of 5G, and aims to solve the problems of significant improvement of system throughput, consistency of user experience, scalability, and the like to support IoT, latency, energy efficiency, cost, network flexibility, emerging services, flexible spectrum utilization, and the like.
Millimeter wave communication is a key technology possible for 5G. By increasing the carrier frequency to the millimeter wave frequency band, the available bandwidth is greatly increased, and therefore the transmission rate of the system can be greatly increased. In order to combat the characteristics of high fading, high loss, etc. in the millimeter wave band wireless channel, the millimeter wave communication system generally employs a Beamforming (Beamforming) technique, that is, by using weighting factors, beam energy is concentrated in a certain direction. When wireless communication is carried out, the base station and the user search out the optimal beam pair through polling and other modes, so that the receiving signal-to-noise ratio of the user side is maximized.
In the millimeter wave system, the beam reciprocity is defined such that the receiving beam direction capable of obtaining the maximum beam forming gain is the same as the transmitting beam direction capable of obtaining the maximum beam forming gain. When the terminal and the base station do not have beam reciprocity, the terminal and the base station need to traverse all possible beam pairs to find a beam pair with the maximum beam forming gain; when the terminal or the base station has the beam reciprocity, the beam management or the beam direction correction process can be greatly simplified, and the terminal and the base station can obtain the beam pair with the maximum beam forming gain without traversing all possible beam pairs.
Whether the terminal has beam reciprocity or not can be considered as the capability of the terminal for the base station. If the base station can know whether the terminal has beam reciprocity in time when or after the terminal is accessed, appropriate time-frequency resources can be allocated to the terminal in the processes of resource allocation, beam management, beam modification, cell switching and the like, so that waste of system resources is avoided, and the resource utilization efficiency is improved.
In the existing millimeter wave system, no appropriate signaling and flow are used for the terminal to inform the base station of the beam reciprocity capability of the terminal, so that the resource utilization efficiency of the existing millimeter wave system is low, and resources cannot be reasonably distributed according to the beam reciprocity capability of the terminal.
Disclosure of Invention
The invention aims at the problem that in the existing millimeter wave system, no proper signaling and flow are used for the terminal to inform the base station of the beam reciprocity capability, so that the resource allocation, beam management, beam correction and other operation resource utilization rate and working efficiency in the existing multi-beam operating system are low, and new signaling and flow are needed for informing the terminal beam reciprocity capability, so as to improve the working efficiency and the resource utilization rate of the system.
The invention provides a method for indicating terminal beam reciprocity capability. Specifically, in the random access procedure, the beam reciprocity capability of the base station terminal is notified by the transmission of the message 3 or the selection of the random access resource. When the terminal completes the random access process, the base station can acquire the beam reciprocity capability of the terminal.
Compared with the prior art, the method provided by the invention can utilize the beam reciprocity capability of the terminal to improve the operation efficiency of the system in subsequent operation because the base station can acquire the beam reciprocity capability of the terminal when the terminal is accessed. For example, the base station can more effectively allocate time-frequency resources to the terminal in the multi-beam operation, more effectively perform operations such as beam management and beam direction correction, and more effectively complete procedures such as cell handover through interaction between the base stations.
According to an aspect of the present invention, there is provided a random access method for a terminal, including the steps of: when random access is carried out, if a random access response is successfully detected, a message 3 containing an indication of terminal beam reciprocity capability is sent; and detecting the conflict resolution information to complete the random access.
The random access method of the terminal further comprises the following steps: acquiring random access configuration information, wherein the random access configuration information comprises random access channel configuration and leader sequence resource pool information; determining a random access channel and a leader sequence according to the random access channel configuration and the leader sequence resource pool information, and sending the leader sequence on the random access channel; and if the random access response is detected in the random access response window and the preamble sequence identifier matched with the transmitted preamble sequence is detected in the random access response, the random access response is successfully detected.
Wherein the beam reciprocity capability is indicated by at least a 1-bit indicator.
Wherein the transmitted message 3 comprises at least a beam reciprocity capability indication field, an RRC connection request field; or wherein the RRC connection request field of the transmitted message 3 includes a beam reciprocity capability indication field.
Wherein, before sending the message 3, the sent message 3 is subjected to channel coding, a CRC check code is added, and a mask corresponding to the beam reciprocity capability is added on the basis of adding the CRC check code.
Wherein the beam reciprocity capability comprises: the method has no beam reciprocity and has complete beam reciprocity.
Wherein the beam reciprocity capability comprises: the method has no beam reciprocity, complete beam reciprocity and partial beam reciprocity.
According to another aspect of the present invention, there is provided a random access method of a base station, comprising the steps of: after sending the random access response, detecting a message 3 containing an indication of the terminal beam reciprocity capability; and sending conflict resolution information according to the competition result.
The random access method of the base station further comprises the following steps: before sending a random access response, sending random access configuration information, wherein the random access configuration information comprises random access channel configuration and leader sequence resource pool information; detecting a random access leader sequence on the configured random access channel; and determining a random access response and sending the random access response according to the detected random access preamble sequence information.
According to another aspect of the present invention, there is provided a random access apparatus for a terminal, including: a message 3 generating and sending module for generating and sending a message 3 containing an indication that the terminal has the beam reciprocity capability; and a conflict resolution receiving module for detecting the conflict resolution information to complete the random access.
The random access device of the terminal further comprises: the configuration information acquisition module is used for acquiring random access configuration information, wherein the random access configuration information comprises random access channel configuration and leader sequence resource pool information; a leader sequence sending module, which determines a random access channel and a leader sequence according to the random access channel configuration and the leader sequence resource pool information, and sends a random access leader sequence signal on the random access channel; and a random access response detection module, which detects the random access response sent by the base station in the random access response window, detects the leader sequence identifier matched with the sent leader sequence in the random access response, considers that the random access response is successfully detected, and acquires the message 3 from the random access response.
According to another aspect of the present invention, there is provided a random access apparatus of a base station, including: a message detection module, configured to detect a message 3 including an indication of a terminal beam reciprocity capability after sending a random access response; and the conflict resolution module is used for sending conflict resolution information according to the competition result.
The random access device of the base station further comprises: a random access configuration information sending module, configured to send random access configuration information, where the random access configuration information includes random access channel configuration and preamble sequence resource pool information; a random access leader sequence detection module, which is used for detecting the random access leader sequence on the configured random access channel; and a random access response sending module, configured to determine a random access response according to the detected random access preamble sequence information and send the random access response.
According to another aspect of the present invention, there is provided a method for a terminal to determine random access resources, including the steps of: acquiring random access resource configuration information, wherein the random access resource configuration information comprises random access resource subset configuration conditions distributed to terminals with different beam reciprocity capabilities, and the random access resources of the terminals with different beam reciprocity capabilities comprise one of random access channel time-frequency resources and preamble sequence resource pool information; selecting a corresponding random access resource subset according to the beam reciprocity capability of the random access resource subset, wherein the selected random access resource subset comprises a random access channel time-frequency resource of a terminal suitable for the beam reciprocity capability or a leader sequence resource of the terminal suitable for the beam reciprocity capability; the terminal generates a leader sequence according to the leader sequence resource information and sends the leader sequence on the time frequency resource of the random access channel; and completing the subsequent random access procedure.
The random access resource is divided into a plurality of mutually disjoint resource subsets according to the quantity value of the subsets representing the terminal beam reciprocity capability, and each subset corresponds to a type of beam reciprocity capability.
Wherein the preamble sequence of the terminal is configured by one of the following ways: the method I comprises the following steps: configuring a preamble sequence of a terminal by indicating an initial preamble sequence index of a first preamble sequence subset and a number of preamble sequences in each preamble sequence subset; the second method comprises the following steps: configuring a preamble sequence of the terminal by indicating an initial preamble sequence index and a total number of preamble sequences of each preamble sequence subset; the third method comprises the following steps: configuring a preamble sequence of a terminal by indicating a first sequence index in a base sequence resource pool, a number of sequences in the base sequence pool, and a cover code index range, wherein a preamble sequence subset of the terminal is formed as follows: all preamble sequence subsets adopt the same basic sequence pool, different preamble sequence subsets adopt different cover code words, wherein each preamble sequence subset consists of the same or different sequences in the basic sequence resource pool, each sequence of each preamble sequence subset is added with a cyclic prefix in front, all sequences of each preamble sequence subset are added with a guard time in back, and each element of each sequence of each preamble sequence subset is multiplied with a corresponding element in the cover code.
Wherein the beam reciprocity capability comprises: the method has no beam reciprocity and has complete beam reciprocity.
Wherein the beam reciprocity capability comprises: the method has no beam reciprocity, complete beam reciprocity and partial beam reciprocity.
According to another aspect of the present invention, there is provided a method for allocating random access resources by a base station, comprising the steps of: sending random access resource configuration information, wherein the random access resource configuration information comprises random access resource subset configuration conditions distributed to terminals with different beam reciprocity capabilities, and the random access resources of the terminals with different beam reciprocity capabilities comprise one of random access channel time-frequency resources and preamble sequence resource pool information; detecting the sending of the leader sequence and determining a random access resource corresponding to the reciprocity capability of the wave beam; and completing the subsequent random access process.
The method for allocating the random access resource by the base station further comprises the following steps before sending the configuration information of the random access resource: the number ratio of terminals having complete beam reciprocity, terminals not having beam reciprocity and terminals having partial beam reciprocity capability in the current cell is counted to adjust the ratio of random access resource subsets allocated to terminals having different beam reciprocity capability, and the random access resource subsets are notified to terminals having different beam reciprocity capability.
According to another aspect of the present invention, there is provided an apparatus for determining a random access resource by a terminal, including: a configuration information obtaining module, configured to obtain random access resource configuration information, where the random access resource configuration information includes a random access resource subset configuration condition allocated to a terminal with different beam reciprocity capabilities, and a random access resource of a terminal with different beam reciprocity capabilities includes one of a random access channel time-frequency resource and preamble sequence resource pool information; the random access resource selection module selects a corresponding random access resource subset according to the beam reciprocity capability of the random access resource selection module, wherein the selected random access resource subset comprises a random access channel time-frequency resource suitable for a terminal with the beam reciprocity capability or a leader sequence resource suitable for the terminal with the beam reciprocity capability; and a leading sequence sending module, which generates a leading sequence according to the selected leading sequence resource information and sends the leading sequence on the random access channel.
According to another aspect of the present invention, there is provided an apparatus for allocating random access resources by a base station, including: a random access resource configuration information sending module, configured to send random access resource configuration information, where the random access resource configuration information includes a random access resource subset configuration condition allocated to a terminal with different beam reciprocity capabilities, and a random access resource of the terminal with different beam reciprocity capabilities includes one of a random access channel time-frequency resource and preamble sequence resource pool information; and a preamble sequence detection module for detecting the transmission of the preamble sequence and determining the random access resource corresponding to the beam reciprocity capability.
The apparatus for allocating random access resources by the base station further comprises: the beam reciprocity capability statistic module is used for counting the proportion of each beam reciprocity capability of the accessed terminal; a random access resource allocation adjusting module, which adjusts the random access resource allocation information according to the terminal proportion with each beam reciprocity capability obtained by the statistical module, wherein the random access resource allocation information includes the random access resource subset allocation condition corresponding to different beam reciprocity capabilities and the random access resource allocated to the terminal with different beam reciprocity capabilities, and the random access resource for the terminal with different beam reciprocity capabilities includes one of the time frequency resource of the random access channel and the leader sequence resource pool information; and a resource configuration information notification module for notifying the adjusted random access resource configuration information to the terminal.
The invention provides a mode for informing the terminal of the beam reciprocity capability, and the terminal can report the beam reciprocity capability of the terminal when the access is finished by sending a message 3 in the random access process or selecting random access resources, so that a base station can acquire the beam reciprocity capability information of the terminal as soon as possible. After obtaining the information, the base station can more effectively perform subsequent processes such as scheduling, resource allocation, beam management, beam modification and the like. By adopting the method provided by the invention, the working efficiency of the system can be improved, and the flows of resource allocation, beam management, beam correction and the like can be more effective.
Drawings
The foregoing and/or other aspects will become apparent and more readily appreciated from the following description of the exemplary embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a flow chart of interaction between a base station and a terminal according to a first embodiment of the present invention;
fig. 2 is a schematic structural diagram of a message 3 in a manner 1 carrying an indication of beam reciprocity capability according to a first embodiment of the present invention;
fig. 3 is a diagram illustrating a terminal random access apparatus according to a first embodiment of the present invention;
fig. 4 is a diagram of a random access apparatus of a base station according to a first embodiment of the invention;
FIG. 5 is a diagram illustrating a possible resource allocation according to a second embodiment of the present invention;
fig. 6 shows a possible preamble resource pool configuration and notification manner according to a second embodiment of the present invention;
fig. 7 is another possible preamble resource pool configuration and notification manner according to the second embodiment of the present invention;
FIG. 8 is a diagram illustrating another possible preamble configuration using cover codes according to the second embodiment of the present invention;
fig. 9 is a structural diagram of a preamble sequence of fig. 7 according to a second embodiment of the present invention;
fig. 10 is a schematic interaction flow diagram of a base station and a terminal according to a second embodiment of the present invention;
fig. 11 is a flowchart illustrating a base station adjusting in real time the random access resources allocated to terminals with different beam reciprocity capabilities according to a second embodiment of the present invention;
fig. 12 is a diagram illustrating an apparatus for determining a random access resource by a terminal according to a second embodiment of the present invention;
fig. 13 is a diagram illustrating an apparatus for allocating random access resources by a base station according to a second embodiment of the present invention;
fig. 14 is a diagram illustrating an apparatus for allocating random access resources by a base station according to a second embodiment of the present invention.
Detailed Description
Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.
First embodiment
In this embodiment, a method and an apparatus for reporting a terminal beam reciprocity capability will be introduced in conjunction with a specific wireless communication system, where a message 3 in a random access procedure is used to explicitly carry information about the terminal beam reciprocity capability.
Fig. 1 is a flow of interaction between a base station and a terminal according to a first embodiment of the present invention. The wireless communication system of fig. 1 includes a terminal 110 and a base station 120 that communicate with each other.
In order to realize the capability of reporting the terminal beam reciprocity, the specific process at the terminal side is as follows:
step 101: the terminal 110 acquires random access configuration Information including random access channel configuration and preamble sequence resource pool Information in a System Information Block (SIB).
Step 103: the terminal 110 determines a random access channel and a preamble sequence according to the random access channel configuration and the preamble sequence resource pool information, and transmits a random access preamble sequence signal on the random access channel. The leader sequence is randomly selected from a leader sequence resource pool configured by the base station with equal probability.
Step 105: after the terminal 110 sends the preamble sequence, it detects a random access response in the random access response window, if the random access response is successfully detected and a preamble sequence Identifier matching with the sent preamble sequence is detected in the random access response, it considers that the random access response is successfully detected, and obtains information of uplink authorization, timing advance, temporary Cell Radio Network Temporary Identifier (TC-RNTI) and the like of the message 3 from the random access response; if the random access response is not successfully detected in the random access response window or the leader sequence identifier detected in the random access response is not matched with the transmitted leader sequence, the random access is considered to be unsuccessful, and the random access attempt is performed again after the power is adjusted or the wave is transmitted.
Step 107: upon successful detection of the random access response and detection of a preamble sequence identifier matching the transmitted preamble sequence in the random access response, the terminal 110 transmits a message 3 on the time-frequency resource specified by the uplink grant. The message 3 includes the terminal unique identifier and an indication of whether the terminal 110 has beam reciprocity.
Step 109: after the terminal 110 sends message 3, the collision resolution information is detected. If the unique terminal identifier included in the conflict resolution information matches the unique terminal identifier, the conflict resolution of the terminal 110 is successful, and the random access is successful; if the message 3 fails to be transmitted or the unique terminal identifier included in the conflict resolution does not match the unique terminal identifier of the terminal 110, the conflict resolution of the terminal 110 fails, and the power is adjusted or the random access is retried after the wave beam is transmitted.
Correspondingly, in order to realize the capability of reporting the terminal beam reciprocity, the specific flow at the base station side is as follows:
step 201: the base station 120 sends random access configuration information in a System Information Block (SIB), including random access channel configuration and preamble sequence resource pool information;
step 203: the base station 120 detects the transmission of the random access preamble sequence on the configured random access channel;
step 205: if the base station 120 detects the sending of the preamble sequence, according to the detected preamble sequence, the delay of the detected preamble sequence, and other information, each parameter in the random access response is determined, and after a fixed or configured time sequence after the random access channel of the preamble sequence is detected, the random access response is sent in the downlink shared channel.
Step 207: after sending the random access response, the base station 120 detects the message 3 on the uplink shared channel indicated by the resource allocation information in the uplink grant allocated in the random access response, and obtains the indication of the terminal beam reciprocity capability therein.
Step 209: the base station 120 transmits the conflict resolution information according to the competition result.
In the random access procedure, the beam reciprocity capability indication of the terminal is added to the message 3. The beam reciprocity capability indication is used to inform the base station whether the terminal has beam reciprocity.
With respect to beam reciprocity capability indication, one possible approach is for the following cases: the terminal either has no beam reciprocity (i.e., the optimal transmit beam direction cannot be known from the optimal receive beam direction) or has full beam reciprocity (i.e., the exact optimal transmit beam direction can be known from the optimal receive beam direction). In this case, the beam reciprocity capability indication may be implemented by 1-bit indication information, a value of 1-bit indication information being 1 indicates that the terminal has beam reciprocity, and a value of 0 of 1-bit indication information indicates that the terminal does not have beam reciprocity.
With respect to beam reciprocity capability indication, another possible approach is for the following cases: some terminals do not have beam reciprocity (that is, the optimal transmitting beam direction cannot be obtained through the optimal receiving beam direction); some terminals have complete beam reciprocity (namely, the accurate optimal transmitting beam direction can be obtained through the optimal receiving beam direction); other terminals have partial beam reciprocity (i.e., an estimate of the optimal transmit beam direction can be obtained from the optimal receive beam direction, and a scan of the transmit beam within a particular beam direction range including the optimal receive beam direction is still required to determine the precise transmit beam direction). In this case, the beam reciprocity capability indication cannot be signaled by 1-bit information, requiring multiple bits for signaling. One possible way of indicating this is as shown in table 1:
table 1: beam reciprocity capability indication schematic
Index (bit representation) Meaning of value
0(00) The terminal does not have beam reciprocity
1(01) The terminal has weak beam reciprocity
2(10) The terminal has strong beam reciprocity
3(11) The terminal has complete beam reciprocity
In the above example, two bits of information are used to inform the terminal of the beam reciprocity capability, where 00 indicates that the terminal has no beam reciprocity at all, and 11 indicates that the terminal has complete beam reciprocity. 01 denotes that the terminal only has weak partial beam reciprocity (i.e. after learning the optimal receive beam direction, it still needs to scan the transmit beam in a larger beam direction range); 10 indicates that the terminal has strong partial beam reciprocity (i.e., after the optimal receive beam direction is known, only the transmit beam scanning needs to be performed within a small beam direction range).
The stronger partial beam reciprocity and the weaker partial beam reciprocity may be determined using some predetermined criteria. For example, one possible criterion is to set a scanning angle threshold of the transmission beam direction that the terminal still needs to perform after knowing the optimal reception beam, and if the transmission beam scanning range that the terminal needs to perform exceeds the preset threshold, it is determined that the terminal has weak partial beam reciprocity; if the transmission beam scanning range that the terminal needs to perform does not exceed the preset threshold, it is determined that the terminal has strong partial beam reciprocity.
Another possible criterion for the determination of the stronger partial beam reciprocity and the weaker partial beam reciprocity is to perform the determination according to the number of transmit beam directions that the terminal needs to scan. For example, a threshold value of the maximum number of transmission beams in the transmission beam direction that the terminal still needs to scan after learning the optimal reception beam is set. If the number of the transmission beams which need to be scanned by the terminal exceeds the preset threshold, determining that the transmission beams have weaker reciprocity; if the number of the transmission beams which the terminal needs to scan does not exceed the preset threshold value, the terminal is judged to have strong reciprocity of partial beams. The transmission beam may be a transmission beam of the terminal itself, or may be a transmission beam having a predetermined standard beam width.
In the above example, terminals with partial beam reciprocity are further subdivided into two or four classes. In other possible ways, terminals with reciprocity of partial beams may be classified into only one category, or into more categories. If subdivided into more categories, more bits are needed for the indication of beam reciprocity.
According to the structure of the message 3 carrying the beam reciprocity capability indication described above, the following three implementations can be adopted.
Mode 1: a new field is added in message 3 for transmitting the beam reciprocity capability indication. That is, when the random access procedure is used for the initial access, the message 3 includes at least fields of a beam reciprocity capability indication, an RRC connection request (RRC connection request), and the like. As shown in figure 2 of the drawings, in which,
fig. 2 is a schematic structural diagram of a message 3 in the mode 1 according to the present invention, which carries the beam reciprocity capability indication.
As shown in fig. 2, when the method 1 is adopted, the message 3 transmitted on the uplink shared channel includes a beam reciprocity capability indication field, an RRC connection request field, and possibly other fields. It should be noted that the structure shown in fig. 2 is only a schematic diagram, and the actual positions of the fields may vary.
Mode 2: a new field is added in the RRC connection request of message 3 for informing the beam reciprocity capability of the terminal. Existing RRC connection requests include: terminal identification information (ue-Identity), establishment cause information (estabilishment cause), and a reserved field. The terminal identification information is selected from the following two modes: the s-TMSI of the terminal is randomly valued. The establishment cause information includes: emergency (emergency), high priority Access (highpriority Access), mobile terminal Access (mt-Access), mobile initiation signaling (mo-signaling), mobile initiation data (mo-data), delay tolerant Access (delaytearancaccess-v 1020), mobile initiation voice communication (mo-VoiceCall-v 1280), and the like.
On the basis of these fields in the RRC connection request of message 3, a beam reciprocity capability indication field is added. For example, one possible beam reciprocity capability indication parameter is ue-beamCapability, and the possible types are no beam reciprocity (Non), full beam reciprocity (Full), and possible partial beam reciprocity (Perfect). The possible types of Partial beam reciprocity can be further subdivided, for example into different Partial beam reciprocity classes (Partial-v 1, partial-v2, \ 8230;).
In the above manner, the RRC connection request is written as follows:
Figure BDA0001253876480000101
Figure BDA0001253876480000111
mode 3: after the message 3 is transmitted to the physical layer, the information bits are channel coded and then added with the CRC check code, and on the basis of the CRC check code, masks corresponding to the beam reciprocity capability one by one are added for informing the beam reciprocity capability of the terminal. For example, a dedicated Radio Network Temporary Identity (RNTI) is set for indicating the terminal beam reciprocity capability.
One possible way is to define BC-RNTI (beam reciprocity RNTI) for indicating the terminal beam reciprocity capability. The BC-RNTI is in a 16-bit sequenceColumn with value in the range of [ v1, v2 ]]Wherein v1 is the starting point of the value range, and v2 is the terminal of the value range. V1 is used to indicate that the terminal has no terminal reciprocity, and v2 is used to indicate that the terminal has full beam reciprocity. Other values in the value range are used for expressing the reciprocity performance of partial beams of different grades. The number of all possible beam reciprocity capability levels is N, including the case of no beam reciprocity and full beam reciprocity capability EC ＝v2-v1+1。
In this way, the base station detects the message 3 and performs channel decoding, and then uses the above-mentioned N BC A possible mask, one to one corresponding to the beam reciprocity capability, descrambles the CRC and attempts a CRC check. If the CRC check is successful, it indicates that the message 3 is successfully detected, and the beam reciprocity capability of the corresponding terminal is the beam reciprocity capability corresponding to the used corresponding BC-RNTI.
Fig. 3 is a diagram of a random access device of a terminal according to a first embodiment of the invention. Referring to fig. 3, the random access apparatus of the terminal according to the first embodiment of the present invention includes: a configuration information obtaining module 310, configured to obtain random access configuration information carried by a master information block in a broadcast channel or a system information block indicated by the master information block, where the random access configuration information includes random access channel configuration and preamble sequence resource pool information; a preamble sequence sending module 320, configured to determine a random access channel and a preamble sequence according to the random access channel configuration and the preamble sequence resource pool information, and send a random access preamble sequence signal on the random access channel; a random access response detection module 330, configured to detect a random access response sent by the base station in the random access response window, and if a preamble sequence identifier matching the sent preamble sequence is detected in the random access response, determine that the random access response is successfully detected, and obtain a message 3 from the random access response; a message 3 generating and transmitting module 340, which generates and transmits a message 3 including an indication of whether the terminal has beam reciprocity according to the detected random access response and the beam reciprocity capability of the terminal in one of the above modes 1-3; the conflict resolution receiving module 350 detects the received conflict resolution information, and completes the random access process.
Fig. 4 is a diagram of a random access apparatus of a base station according to a first embodiment of the invention. Referring to fig. 4, a random access apparatus of a base station according to a first embodiment of the present invention includes: a message detection module 401, configured to detect a message 3 that includes an indication of a terminal beam reciprocity capability after sending the random access response; and a conflict resolution module 403, configured to send conflict resolution information according to the contention result. The random access apparatus of a base station according to the first embodiment of the present invention further includes: a random access configuration information sending module 405, configured to send random access configuration information, where the random access configuration information includes a random access channel configuration and preamble sequence resource pool information; a random access preamble sequence detection module 407, configured to detect a random access preamble sequence on the configured random access channel; and a random access response sending module 409, configured to determine a random access response according to the detected random access preamble sequence information and send the random access response.
According to the first embodiment of the present invention, by sending the message 3 in the random access process, the terminal can report the beam reciprocity capability of the terminal when the access is completed, so that the base station can acquire the beam reciprocity capability information of the terminal as early as possible. After obtaining the information, the base station can more effectively perform subsequent processes such as scheduling, resource allocation, beam management, beam modification and the like. By adopting the method provided by the first embodiment of the invention, the working efficiency of the system can be improved, and the flows of resource allocation, beam management, beam correction and the like can be more effective.
Second embodiment
In a second embodiment, a beam reciprocity capability notification approach will be introduced in connection with a particular wireless communication system, wherein the beam reciprocity capability is implicitly notified by the random access resource used. For example, the different beam reciprocity capabilities of the terminal are distinguished based on random access channel time-frequency resources or based on random access preamble sequences.
Fig. 5 is a schematic diagram of a possible resource allocation according to a second embodiment of the present invention, wherein a resource partitioning manner based on time-frequency resources of a random access channel is adopted to distinguish different beam reciprocity capabilities of a terminal.
In a wireless communication system, a parameter N is predefined BC A quantity value representing a subset of terminal beam reciprocity capabilities, wherein N BC ≥1。N BC When =1, it means that the system does not distinguish between terminals with and without beam reciprocity capability, that is, the number of subsets is 1; n is a radical of BC =2 indicates that the system only distinguishes between having full beam reciprocity and not having beam reciprocity, i.e. the number of subsets is 2, wherein terminals that cannot directly determine the optimal transmit beam direction through the optimal receive beam are all considered to be not having beam reciprocity; n is a radical of BC > 2 denotes the terminal where the system distinguishes the reciprocity of partial beams, i.e. the number of subsets is N BC And the terminal with different part beam reciprocity capabilities is distinguished according to the transmission beam scanning range or the number of transmission beam scans required by the terminal after acquiring the optimal receiving beam.
Base station according to N BC Value of (2), dividing random access resources into N BC And each subset corresponds to a type of beam reciprocity capability. The base station will send the N BC The random access channel time frequency resource subset informs the terminal through the broadcast channel, or the master information block in the broadcast channel, or the system information block indicated by the master information block in the broadcast channel.
In the example shown in fig. 5, the time-frequency resources of the random access channels allocated to the terminals with different beam reciprocity capabilities are divided in a frequency division manner.
In fig. 5, the number of subsets of terminal beam reciprocity capability is N BC The 1 st subset is terminals with beam reciprocity capability 1, namely terminals with full beam reciprocity; n th BC Subset is the capability of beam reciprocity N BC I.e. a terminal without beam reciprocity. Subset 2-N BC The subset being the capability of partial beam reciprocity N BC The terminal of (1) has the beam reciprocity capability sequentially increased according to the subset numbers.
Meanwhile, for terminals with partial beam reciprocity capability and terminals without beam reciprocity capability, multiple random access opportunities need to be allocated for the terminals to perform transmit beam scanning.
Another allocation method is that only terminals with partial beam reciprocity capability and terminals without beam reciprocity capability are allocated a random access opportunity, and the beam scanning is completed by random access retry.
The other allocation mode is that the time-frequency resources of the random access channels allocated to the terminals with different beam reciprocity capabilities are divided in a time division mode.
It should be noted that when the time-frequency resources allocated to the terminals with different beam reciprocity capabilities are distinguished by using resources, the terminals with different beam reciprocity capabilities may use the same preamble sequence resource pool.
Fig. 6 shows a possible preamble resource pool configuration and notification manner according to a second embodiment of the present invention; fig. 7 shows another possible preamble resource pool configuration and notification manner according to the second embodiment of the present invention. FIG. 8 is a diagram illustrating another possible preamble configuration using cover codes according to the second embodiment of the present invention; in fig. 6, 7 and 8, the capability of distinguishing different beam reciprocity of the terminal based on the random access preamble sequence is adopted. Wherein the random access preamble sequence is divided into N BC Disjoint subsets, each subset corresponding to a class of beam reciprocity capabilities. The base station will send the N BC Each preamble sequence subset is notified to the terminal through the broadcast channel, or the system information block indicated by the master information block in the broadcast channel, or the master information block in the broadcast channel.
Referring to fig. 6, the range of possible preamble sequence indices in each subset of preamble sequences is signaled by indicating the initial preamble sequence index of the first subset, and the number of preamble sequences in each subset. Number of subsets N (i.e. N as described above) BC ) Or may be signaled with the preamble sequence subset configuration.
In FIG. 6, the content in the dashed line box, the number N of subsets (i.e., the aforementioned N BC ) Can be associated with the preambleThe sequence resource pool information may be notified together or may be notified separately in the random access configuration information.
Referring to fig. 7, the range of possible preamble sequence indices in each preamble sequence subset is signaled by indicating the initial preamble sequence index and the total number of preamble sequences for each subset.
In addition to the two modes shown in fig. 6 and 7, the configuration notification mode based on the preamble sequence subset further includes: informing the starting index of the first leader sequence subset and the index of the last sequence of each leader sequence subset; or informing the initial index and the sequence number of each leader sequence subset; or the index of the start and the index of the last sequence of each preamble sequence subset.
Referring to fig. 8, fig. 8 is a diagram of another possible preamble sequence configuration using cover codes according to the second embodiment of the present invention, where all preamble sequence subsets use the same basic sequence pool, and different preamble sequence subsets use different cover code words. I.e. for N BC Subsets, defining or predetermining N BC A cover code, and a pool of base sequence resources. The nth subset of preamble sequences is formed from the pool of base sequence resources and the nth cover code. At this time, when configuring the preamble sequence resource, it is necessary to notify the first sequence index in the basic sequence resource pool, the number of sequences in the basic sequence pool, and the available cover code index range.
If the cover code type is predefined, it is not necessary to notify the cover code index range, and only the number of subsets N (i.e. the aforementioned N) is required to be notified DC )。
Fig. 9 is a structural diagram of a preamble sequence of fig. 8 according to a second embodiment of the present invention.
Referring to fig. 9, fig. 9 shows a block diagram of one of the preamble sequence subsets of fig. 8, according to fig. 8, a single preamble sequence subset is generated by a pool of base sequence resources and a corresponding one of the cover codes. In the structure of fig. 9, a subset of preamble sequences consists of the same or different sequences in the basic sequence resource pool, each sequence is preceded by a Cyclic Prefix (CP) and followed by a Guard Time (Guard Time, GT).A leader sequence subset consisting of N sequences, and a cover code w = [ w ] with the length of N 1 ，...，w N ]Processing is carried out, wherein each element in the nth sequence is related to the nth element w in the cover code n Multiplication. (1 ≦ N ≦ N).
It should be noted that, for terminals with different beam reciprocity capabilities that are allocated by using preamble sequences, the time frequency resources of the random access channel can be configured uniformly, that is, the terminals with different beam reciprocity capabilities use the same time frequency resources of the random access channel. One possible way is to configure the random access channel time-frequency resources, which are used by all terminals, and terminals with different beam reciprocity capabilities use different preamble sequence subsets.
Another possible way is that, in order to facilitate the terminal to scan the transmitted beams, multiple random access occasions are configured in the random access channel, and the terminals with different beam reciprocity capabilities select consecutive random access occasions with different numbers to transmit the preamble sequence.
Fig. 10 is a schematic diagram illustrating an interaction procedure between a base station and a terminal according to a second embodiment of the present invention. The wireless communication system of fig. 10 includes a terminal 1010 and a base station 1020 that are in interactive communication.
In order to realize the capability of implicitly informing the beam reciprocity by the random access resource, the specific flow at the terminal side is as follows:
step 1011: the terminal 1010 obtains random access configuration information, where the random access configuration information includes random access resource subset configuration conditions corresponding to different beam reciprocity capabilities, including random access channel time-frequency resources allocated to terminals with different beam reciprocity capabilities or preamble sequence resource pool information allocated to terminals with different beam reciprocity capabilities.
Step 1013: the terminal 1010 selects corresponding random access resources according to its own beam reciprocity capability, including random access channel time-frequency resources of the terminal suitable for the beam reciprocity capability or preamble sequence resources of the terminal suitable for the beam reciprocity capability. The terminal selects an available sequence with equal probability according to the leader sequence resource information to generate a leader sequence, and sends the leader sequence on a corresponding random access channel.
Step 1015: the terminal 1010 completes the subsequent random access procedure.
Corresponding to the terminal side behavior, when the beam reciprocity capability is implicitly notified by the random access resource, the base station side behavior is as follows:
step 1021: the base station 1020 allocates random access resources, including different random access channel time-frequency resources or different preamble sequence resources, to the terminals with different beam reciprocity. Specifically, the base station 1020 transmits random access resource configuration information, which includes a random access resource subset configuration situation allocated to terminals with different beam reciprocity capabilities, where the random access resource for the terminals with different beam reciprocity capabilities includes one of a random access channel time-frequency resource and preamble sequence resource pool information.
Step 1023: the base station 1020 detects the transmission of the preamble sequence and determines a random access resource subset corresponding to the beam reciprocity capability, the random access resource subset including a random access channel time frequency resource or a preamble sequence resource.
Step 1025: the base station 1020 completes the subsequent random access procedure.
Fig. 11 is a flowchart illustrating a base station adjusting in real time the random access resources allocated to terminals with different beam reciprocity capabilities according to a second embodiment of the present invention.
According to the solution of the second embodiment of the present invention, in step 1101, the statistics adjusting module in the base station may count the number ratio of the terminals with beam reciprocity, the terminals without beam reciprocity and the terminals with partial beam reciprocity capability in the current cell, so as to adjust the ratio of the random access resource subsets allocated to the terminals with different beam reciprocity capability in real time in step 1103.
Specifically, if the terminals with different beam reciprocity are distinguished by the time-frequency resource of the random access channel, the density of the time-frequency resource of the random access channel allocated to the terminals with different beam reciprocity capability can be adjusted to adjust the proportion of the random access resource allocated to the terminals with different beam reciprocity capability. For example, the time domain density of each random access channel time-frequency resource subset is adjusted, for example, the occurrence frequency of the random access channel time-frequency resource subsets allocated to the terminals with different beam reciprocity capabilities in one subframe, and the like. Such parameters may be informed by random access channel configuration parameters, i.e. different subsets of time-frequency resources of the random access channel have different random channel configuration parameters.
If the terminals with different beam reciprocity capabilities are distinguished by the preamble sequences, the number of the preamble sequences contained in different preamble sequence resource subsets can be adjusted. Such parameters can be adjusted by varying the number of preamble sequences in the subset of preamble sequences.
In step 1105, the notification module in the base station notifies the terminals with different beam reciprocity capabilities of the subset of random access resources.
For the above process, the base station may periodically count the proportion of terminals with different beam reciprocity capabilities in the accessed terminals, and determine whether to adjust the random access resources. The adjustment of the random access resource will cause the system information carrying the random access configuration information to change, and therefore, the system information change process will be triggered. And if the terminal is in a connected state, acquiring new system information according to the system information change instruction. If the terminal is in a non-connected state (e.g., idle state), the random access configuration information is acquired before each random access attempt.
Fig. 12 is a diagram illustrating an apparatus for determining random access resources by a terminal according to a second embodiment of the present invention.
The device for determining the random access resource by the terminal according to the second embodiment of the invention comprises the following modules: a configuration information obtaining module 1201, in which a terminal obtains random access configuration information from a master information block in a broadcast channel or a system information block indicated by the master information block, where the configuration information includes random access resources (time-frequency resources or preamble sequence resources) allocated to terminals with different beam reciprocity capabilities, and specifically, the random access configuration information includes random access resource subset configuration conditions corresponding to the different beam reciprocity capabilities, including random access channel time-frequency resources allocated to terminals with different beam reciprocity capabilities or preamble sequence resource pool information allocated to terminals with different beam reciprocity capabilities; a random access resource selection module 1203, which selects a random access resource (time-frequency resource or preamble sequence resource) by the terminal according to the beam reciprocity capability; a preamble sequence sending module 1205, generating a preamble sequence according to the selected random access resource, and sending the preamble sequence on a corresponding time-frequency resource.
Fig. 13 is a diagram illustrating an apparatus for allocating random access resources by a base station according to a second embodiment of the present invention. As shown in fig. 13, an apparatus for allocating random access resources by a base station according to a second embodiment of the present invention includes the following modules: a random access resource configuration information sending module 1301, configured to send random access resource configuration information, where the random access resource configuration information includes a configuration condition of a random access resource subset allocated to a terminal with different beam reciprocity capabilities, where a random access resource of a terminal with different beam reciprocity capabilities includes one of a random access channel time-frequency resource and preamble sequence resource pool information; a preamble sequence detecting module 1303, configured to detect the sending of the preamble sequence, and determine a random access resource corresponding to the beam reciprocity capability.
FIG. 14 is a diagram illustrating an apparatus for allocating random access resources by a base station according to a second embodiment of the present invention
The device for allocating the random access resource by the base station according to the second embodiment of the invention comprises the following modules: a beam reciprocity capability statistic module 1401 for counting the proportion of each beam reciprocity capability possessed by the accessed terminal; a random access resource allocation adjusting module 1403, which adjusts the random access resources (time-frequency resources or preamble sequence resources) allocated to the terminals with different beam reciprocity capabilities according to the ratio of the terminals with each beam reciprocity capability obtained by the counting module, and specifically adjusts the random access resource allocation information, where the random access resource allocation information includes one of the random access resource subset allocation conditions corresponding to the different beam reciprocity capabilities, the random access channel time-frequency resources allocated to the terminals with different beam reciprocity capabilities, and the preamble sequence resource pool information allocated to the terminals with different beam reciprocity capabilities; the resource allocation information notification module 1405 notifies the terminal of the adjusted random access resource allocation information through the master information block in the broadcast channel or the system information block indicated by the master information block.
The invention provides a mode for informing the terminal of the beam reciprocity capability, and the terminal can report the beam reciprocity capability of the terminal when the access is finished by sending the message 3 in the random access process or selecting the random access resource, so that a base station can acquire the beam reciprocity capability information of the terminal as soon as possible. After obtaining the information, the base station can more effectively perform subsequent processes such as scheduling, resource allocation, beam management, beam modification and the like. By adopting the method provided by the invention, the working efficiency of the system can be improved, and the processes of resource allocation, beam management, beam correction and the like can be more effective.
To facilitate understanding of the exemplary embodiments, certain exemplary embodiments of a random access method and apparatus and a method and apparatus for allocating random access resources according to the present invention have been described and illustrated in the accompanying drawings. It should be understood, however, that the exemplary embodiments are only intended to illustrate exemplary embodiments, and not to limit exemplary embodiments. It should also be understood that the exemplary embodiments are not limited to the exemplary embodiments shown and described. Various modifications to the exemplary embodiments will be readily apparent to those skilled in the art.

Claims (14)

1. A method for a terminal to determine random access resources comprises the following steps:
acquiring random access resource configuration information, wherein the random access resource configuration information comprises random access resource subset configuration conditions distributed to terminals with different beam reciprocity capabilities, and the random access resources of the terminals with different beam reciprocity capabilities comprise one of random access channel time-frequency resources and preamble sequence resource pool information;
selecting a corresponding random access resource subset according to the self beam reciprocity capability, wherein the selected random access resource subset comprises a random access channel time-frequency resource of a terminal suitable for the beam reciprocity capability or a leader sequence resource of the terminal suitable for the beam reciprocity capability;
under the condition of selecting the time-frequency resource of the random access channel of the terminal suitable for the beam reciprocity capability, the terminal generates a leader sequence and sends the leader sequence on the selected time-frequency resource of the random access channel; and completing a subsequent random access process; and
under the condition of selecting a leader sequence resource of the terminal suitable for the beam reciprocity capability, the terminal generates a leader sequence according to the selected leader sequence resource information and sends the leader sequence on a time frequency resource of a random access channel; and completing the subsequent random access procedure.
2. The method for a terminal to determine random access resources of claim 1, wherein
According to the quantity value of the subsets representing the terminal beam reciprocity capability, the random access resource is divided into a plurality of mutually disjoint resource subsets, and each subset corresponds to a type of beam reciprocity capability.
3. The method for determining random access resources by a terminal as claimed in claim 1, wherein the preamble sequence of the terminal is configured by one of:
the method I comprises the following steps: configuring a preamble sequence of a terminal by indicating an initial preamble sequence index of a first preamble sequence subset and a number of preamble sequences in each preamble sequence subset;
the second method comprises the following steps: configuring a preamble sequence of the terminal by indicating an initial preamble sequence index and a total number of preamble sequences of each preamble sequence subset;
the third method comprises the following steps: configuring a preamble sequence of a terminal by indicating a first sequence index in a base sequence resource pool, a number of sequences in the base sequence pool, and a cover code index range, wherein a preamble sequence subset of the terminal is formed as follows: all preamble sequence subsets adopt the same basic sequence pool, different preamble sequence subsets adopt different cover code words, wherein each preamble sequence subset consists of the same or different sequences in the basic sequence resource pool, each sequence of each preamble sequence subset is added with a cyclic prefix in front, all sequences of each preamble sequence subset are added with a guard time in back, and each element of each sequence of each preamble sequence subset is multiplied with a corresponding element in the cover code.
4. The method for a terminal to determine random access resources of claim 1, wherein the beam reciprocity capability comprises:
the method has no beam reciprocity and has complete beam reciprocity.
5. The method for a terminal to determine random access resources of claim 1, wherein the beam reciprocity capability comprises:
the method has no beam reciprocity, complete beam reciprocity and partial beam reciprocity.
6. A method for allocating random access resources by a base station comprises the following steps:
sending random access resource configuration information, wherein the random access resource configuration information comprises random access resource subset configuration conditions distributed to terminals with different beam reciprocity capabilities, and the random access resources of the terminals with different beam reciprocity capabilities comprise one of random access channel time-frequency resources and preamble sequence resource pool information;
detecting the sending of the leader sequence and determining a random access resource corresponding to the reciprocity capability of the wave beam; and
the subsequent random access procedure is completed and,
under the condition that the terminal selects the time-frequency resource of the random access channel of the terminal suitable for the beam reciprocity capability, the leader sequence is generated by the terminal and is sent by the terminal on the time-frequency resource of the selected random access channel; and
and the terminal generates the preamble sequence according to the selected preamble sequence resource information and transmits the preamble sequence on the time-frequency resource of the random access channel under the condition that the terminal selects the preamble sequence resource of the terminal suitable for the beam reciprocity capability.
7. The method for allocating random access resources by a base station according to claim 6, before transmitting the random access resource configuration information, the method further comprising:
counting the number ratio of terminals with full beam reciprocity, terminals without beam reciprocity and terminals with partial beam reciprocity capability in the current cell in order to adjust the ratio of subsets of random access resources allocated to terminals with different beam reciprocity capability, and
and informing the terminals with different beam reciprocity capabilities of the random access resource subsets.
8. An apparatus for a terminal to determine random access resources, comprising the following modules:
a configuration information obtaining module, configured to obtain random access resource configuration information, where the random access resource configuration information includes a random access resource subset configuration condition allocated to a terminal with different beam reciprocity capabilities, and a random access resource of a terminal with different beam reciprocity capabilities includes one of a random access channel time-frequency resource and preamble sequence resource pool information;
the random access resource selection module selects a corresponding random access resource subset according to the beam reciprocity capability of the random access resource selection module, wherein the selected random access resource subset comprises a random access channel time-frequency resource suitable for a terminal with the beam reciprocity capability or a leader sequence resource suitable for the terminal with the beam reciprocity capability; and
a leader sequence sending module, which is used for generating a leader sequence by the terminal under the condition of selecting the time-frequency resource of the random access channel of the terminal suitable for the beam reciprocity capability, sending the leader sequence on the selected time-frequency resource of the random access channel and finishing the subsequent random access process; and under the condition of selecting the leader sequence resource of the terminal suitable for the beam reciprocity capability, the terminal generates a leader sequence according to the selected leader sequence resource information, sends the leader sequence on the time frequency resource of the random access channel and completes the subsequent random access process.
9. The apparatus for determining random access resources by a terminal as claimed in claim 8, wherein
According to the quantity value of the subsets representing the terminal beam reciprocity capability, the random access resource is divided into a plurality of mutually disjoint resource subsets, and each subset corresponds to a type of beam reciprocity capability.
10. The apparatus for determining the random access resource by the terminal according to claim 8, wherein the preamble sequence of the terminal is configured by one of:
the first method is as follows: configuring a preamble sequence of the terminal by indicating an initial preamble sequence index of a first preamble sequence subset and a number of preamble sequences in each preamble sequence subset;
the second method comprises the following steps: configuring a preamble sequence of the terminal by indicating an initial preamble sequence index and a total number of preamble sequences of each preamble sequence subset;
the third method comprises the following steps: configuring a preamble sequence of a terminal by indicating a first sequence index in a base sequence resource pool, a number of sequences in the base sequence pool, and a cover code index range, wherein a preamble sequence subset of the terminal is formed as follows: all preamble sequence subsets adopt the same basic sequence pool, different preamble sequence subsets adopt different cover code words, wherein each preamble sequence subset consists of the same or different sequences in the basic sequence resource pool, each sequence of each preamble sequence subset is added with a cyclic prefix in front, all sequences of each preamble sequence subset are added with a guard time in back, and each element of each sequence of each preamble sequence subset is multiplied with a corresponding element in the cover code.
11. The apparatus for determining random access resources by a terminal of claim 8, wherein the beam reciprocity capability comprises:
the method has no beam reciprocity and has complete beam reciprocity.
12. The apparatus for determining random access resources by a terminal of claim 8, wherein the beam reciprocity capability comprises:
the method has no beam reciprocity, complete beam reciprocity and partial beam reciprocity.
13. An apparatus for allocating random access resources by a base station, comprising the following modules:
a random access resource configuration information sending module, configured to send random access resource configuration information, where the random access resource configuration information includes a random access resource subset configuration condition allocated to a terminal with different beam reciprocity capabilities, and a random access resource of the terminal with different beam reciprocity capabilities includes one of a random access channel time-frequency resource and preamble sequence resource pool information;
a leader sequence detection module for detecting the transmission of the leader sequence and determining a random access resource corresponding to the beam reciprocity capability,
under the condition that the terminal selects the time-frequency resource of the random access channel of the terminal suitable for the beam reciprocity capability, the leader sequence is generated by the terminal and is sent by the terminal on the time-frequency resource of the selected random access channel; and
and the terminal generates the preamble sequence according to the selected preamble sequence resource information and transmits the preamble sequence on the time-frequency resource of the random access channel under the condition that the terminal selects the preamble sequence resource of the terminal suitable for the beam reciprocity capability.
14. The apparatus for allocating random access resources of a base station as claimed in claim 13, further comprising:
the beam reciprocity capability statistic module is used for counting the proportion of each beam reciprocity capability of the accessed terminal;
a random access resource allocation adjusting module, which adjusts the random access resource allocation information according to the terminal proportion with each beam reciprocity capability obtained by the statistical module, wherein the random access resource allocation information includes the random access resource subset allocation condition corresponding to different beam reciprocity capabilities and the random access resource allocated to the terminal with different beam reciprocity capabilities, and the random access resource for the terminal with different beam reciprocity capabilities includes one of the time frequency resource of the random access channel and the leader sequence resource pool information; and
and the resource configuration information notification module is used for notifying the adjusted random access resource configuration information to the terminal.
CN201710182283.XA 2017-03-24 2017-03-24 Random access method and device and method and device for allocating random access resources Active CN108631978B (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
CN202310272770.0A CN116437492A (en) 2017-03-24 2017-03-24 Random access method and device and method and device for distributing random access resources
CN201710182283.XA CN108631978B (en) 2017-03-24 2017-03-24 Random access method and device and method and device for allocating random access resources
KR1020197029958A KR102608282B1 (en) 2017-03-24 2018-03-26 Method and apparatus for non-contention random access and uplink power control in wireless communication system
EP21193469.0A EP3934339B1 (en) 2017-03-24 2018-03-26 Beam reciprocity capability indication
EP18772696.3A EP3603305B1 (en) 2017-03-24 2018-03-26 Method and apparatus for uplink power control in wireless communication system
PCT/KR2018/003546 WO2018174687A1 (en) 2017-03-24 2018-03-26 Method and apparatus for contention-free random access and uplink power control in wireless communication system
US16/497,428 US11224068B2 (en) 2017-03-24 2018-03-26 Method and apparatus for contention-free random access and uplink power control in wireless communication system
US17/571,200 US11882593B2 (en) 2017-03-24 2022-01-07 Method and apparatus for contention-free random access and uplink power control in wireless communication system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710182283.XA CN108631978B (en) 2017-03-24 2017-03-24 Random access method and device and method and device for allocating random access resources

Related Child Applications (1)

Application Number Title Priority Date Filing Date
CN202310272770.0A Division CN116437492A (en) 2017-03-24 2017-03-24 Random access method and device and method and device for distributing random access resources

Publications (2)

Publication Number Publication Date
CN108631978A CN108631978A (en) 2018-10-09
CN108631978B true CN108631978B (en) 2023-04-07

Family

ID=63707655

Family Applications (2)

Application Number Title Priority Date Filing Date
CN202310272770.0A Pending CN116437492A (en) 2017-03-24 2017-03-24 Random access method and device and method and device for distributing random access resources
CN201710182283.XA Active CN108631978B (en) 2017-03-24 2017-03-24 Random access method and device and method and device for allocating random access resources

Family Applications Before (1)

Application Number Title Priority Date Filing Date
CN202310272770.0A Pending CN116437492A (en) 2017-03-24 2017-03-24 Random access method and device and method and device for distributing random access resources

Country Status (1)

Country Link
CN (2) CN116437492A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020199042A1 (en) * 2019-03-29 2020-10-08 Nokia Shanghai Bell Co., Ltd. Information transmission in random access
WO2021127962A1 (en) * 2019-12-24 2021-07-01 Qualcomm Incorporated Efficient new radio-light message a repetition in two-step random access channel procedure
CN111601386B (en) * 2020-05-12 2022-11-22 RealMe重庆移动通信有限公司 Resource allocation method and related equipment

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104871629A (en) * 2013-01-17 2015-08-26 富士通株式会社 Random access method, device, and system

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10555345B2 (en) * 2015-01-30 2020-02-04 Qualcomm Incorporated Random access procedure and broadcast prioritization for machine type communications (MTC)

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104871629A (en) * 2013-01-17 2015-08-26 富士通株式会社 Random access method, device, and system

Non-Patent Citations (5)

* Cited by examiner, † Cited by third party
Title
《Random Access in Millimeter-Wave Beamforming Cellular Networks: Issues and Approaches》;JEONG, Cheol 等;《IEEE》;20150131;全文 *
3GPP.《3GPP TR 38.804 V1.0.0》.《3rd Generation Partnership Project *
Radio Interface Protocol Aspects(Release 14)》.2017, *
Study on New Radio Access Technology *
Technical Specification Group Radio Access Network *

Also Published As

Publication number Publication date
CN108631978A (en) 2018-10-09
CN116437492A (en) 2023-07-14

Similar Documents

Publication Publication Date Title
US11895510B2 (en) Physical downlink control channel design for NR systems
EP3530056B1 (en) Methods, base station apparatus and user equipment for random access
US12075475B2 (en) Information transmission method and device, and storage medium
US11089631B2 (en) Apparatus and method for performing a random access
EP3214889B1 (en) Method and device for communication using unlicensed band in mobile communication system
CN108811172B (en) Random access method and device of terminal and random access method and device of base station
KR101861726B1 (en) METHODS FOR DETECTING RESOURCES IN RANDOM ACCESS, USER DEVICE, AND BASE STATION
KR101366263B1 (en) A Method of Random Access and a method of transforting information in Broadband Wireless Access system
EP3749035B1 (en) Information transmission method, and base station, terminal and computer-readable storage medium
CN116390266A (en) Beam selection and resource allocation in beamforming random access procedure
CN107919897B (en) Beam determination method executed during uplink random access, user equipment and base station
CN109168147B (en) Hybrid random access method for M2M communication in LTE network
EP3636037B1 (en) Apparatus and method for random access in wireless communication system
CN110140399B (en) System and method for user equipment identity configuration
US11457449B2 (en) Telecommunications apparatus and methods including selecting a TBS based on an indicated maximum TBS
CN113543353A (en) Method and equipment for sending and receiving uplink data
CN108631978B (en) Random access method and device and method and device for allocating random access resources
CN108633104B (en) Random access method, user equipment, base station and random access system
US20210037553A1 (en) Telecommunications apparatus and methods
EP2908594A1 (en) Method of transmitting RRC messages in RRC-idle mode and related wireless communication system
CN110475338B (en) Uplink transmission method and user equipment
CN107787013B (en) Scheduling request transmission method, user equipment and base station
US11419075B2 (en) Method and apparatus for transceiving data in wireless communication system
EP4132192A1 (en) Random access method, base station, user equipment, apparatus, and medium
CN112087811A (en) Method and device for sending random access preamble

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