CN115208543A - Method and equipment used for wireless communication - Google Patents

Method and equipment used for wireless communication Download PDF

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Publication number
CN115208543A
CN115208543A CN202210790645.4A CN202210790645A CN115208543A CN 115208543 A CN115208543 A CN 115208543A CN 202210790645 A CN202210790645 A CN 202210790645A CN 115208543 A CN115208543 A CN 115208543A
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time
frequency resource
signaling
sets
node
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CN202210790645.4A
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Chinese (zh)
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张晓博
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Shanghai Langbo Communication Technology Co Ltd
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Shanghai Langbo Communication Technology Co Ltd
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Priority to CN202210790645.4A priority Critical patent/CN115208543A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT the frequencies being arranged in component carriers
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/002—Transmission of channel access control information
    • 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
    • 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

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

Abstract

A method and apparatus for wireless communication is disclosed. A first node receives a first signaling and a second signaling; transmitting a target signal group; wherein the first signaling is used to indicate a first time-frequency resource pool, the first time-frequency resource pool comprising K sets of time-frequency resources, resource Elements (REs) occupied by any two sets of the K sets of time-frequency resources being orthogonal; the target signal group comprises K target signals, and at least two target signals of the K target signals are different; the second signaling is used for indicating that the K target signals respectively correspond to the K frequency resource sets one by one, and the target signal group is used for the same random access; k is a positive integer greater than 1, and the value of K is related to a first parameter; determining, in the first pool of time-frequency resources, that the K sets of time-frequency resources are related to the first parameter. According to the method and the device, the access success rate is improved by reasonably setting K time-frequency resource sets and K target signals.

Description

Method and equipment used for wireless communication
The present application is a divisional application of the following original applications:
application date of the original application: 12 month and 17 days 2019
- -application number of the original application: 201911298573.6
The invention of the original application is named: method and equipment used for wireless communication
Technical Field
The present application relates to a transmission method and apparatus in a wireless communication system, and more particularly, to a transmission method and apparatus for reducing delay and improving transmission reliability in wireless communication, and to a non-terrestrial network.
Background
In the future, the application scenes of the wireless communication system are more and more diversified, and different application scenes put different performance requirements on the system. In order to meet different performance requirements of various application scenarios, research on New air interface technology (NR, new Radio) (or Fifth Generation, 5G) is decided over #72 sessions of 3GPP (3 rd Generation Partner Project) RAN (Radio Access Network), and standardization Work on NR begins over 3GPP RAN #75 sessions over WI (Work Item ) of NR.
In Communication, both LTE (Long Term Evolution) and 5G NR relate to Reliable system access, which is important for normal Communication between a base station and user equipment, reasonable scheduling of resources, and effective coordination of system interference, and may be a high throughput rate, and a foundation for improving spectrum utilization, and are indispensable for both eMBB (enhanced Mobile BroadBand), URLLC (Ultra Reliable Low Latency Communication), and eMTC (enhanced Machine Type Communication). Meanwhile, in the Internet of Things in the field of industry, in V2X (Vehicular to X), device to Device communication (Device to Device), in unlicensed spectrum communication, in user communication quality monitoring, in Network planning optimization, and in NTN (Non terrestrial Network communication), in a mixture of the above various communication modes, there are wide applications in radio resource management and codebook selection for multiple antennas.
With the continuous increase of the scenes and the complexity of the system, higher requirements are put forward on reducing the time delay, enhancing the reliability and enhancing the stability of the system and on quick and reliable access, and meanwhile, the compatibility among different versions of different systems needs to be considered in the system design.
Disclosure of Invention
In various communication scenes, if a user needs to initiate communication, the user needs to access a network firstly; during the communication, due to the problems of the transmitting side or the receiving side, or due to the influence of the communication propagation delay, or due to non-ideal device factors, the signal quality is reduced, even communication interruption occurs, and the user equipment needs to be accessed again. When one access is not successful, the user needs to access again, and the total access delay is increased. In order to reduce the interruption time, improve the success rate of access, quickly access the system, reduce the overall communication delay, and make a quick, reliable and stable access method important, especially when the distance between nodes is long, or other reasons, such as signal detection failure, cause a large delay in the process, the access process will generate further uncertainty, and at the same time, further cause communication interruption. This can lead to a reduction in resource efficiency, difficulty in ensuring communication quality, inability of nodes to establish effective communication bearers, and various complications. On the other hand, the delay in the communication process may cause inaccurate measurement, or the measurement result is out of date, but the measurement itself has a certain error, which may cause the user to initiate access using improper power, or may cause the detection requirement of the access signal to be not satisfied even though the maximum transmission power is used due to the large propagation loss of the user signal, thereby causing access difficulty and increasing the access delay. This is especially true for networks with large propagation delays. In addition, the design criteria, accuracy and geographical location of different systems may be different, and various communication scenarios may be mixed, which all bring problems to the design of the systems.
In view of the above, the present application provides a solution.
It should be noted that, in the case of no conflict, the embodiments and features in the embodiments in any node of the present application may be applied to any other node. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict. In addition, it should be noted that, in the above problem description, the NTN scenario is only taken as an example of an application scenario of the solution provided in the present application; the method and the device are also applicable to the scenes such as the ground network, and achieve the technical effect similar to the NTN scene. Similarly, the present application is also applicable to scenarios where there is a network of UAVs (Unmanned Aerial vehicles), or internet of things devices, for example, to achieve technical effects in NTN-like scenarios. Furthermore, employing a unified solution for different scenarios (including but not limited to NTN scenarios and ground network scenarios) also helps to reduce hardware complexity and cost.
The application discloses a method in a first node used for wireless communication, characterized by comprising:
receiving a first signaling and a second signaling;
transmitting a target signal group;
the first signaling is used for indicating a first time-frequency resource pool, the first time-frequency resource pool comprises K time-frequency resource sets, and resource units occupied by any two time-frequency resource sets in the K time-frequency resource sets are orthogonal; the target signal group comprises K target signals, and at least two of the K target signals are different; the second signaling is used for indicating that the K target signals respectively correspond to the K frequency resource sets one by one, and the target signal group is used for the same random access; k is a positive integer greater than 1, and the value of K is related to a first parameter; determining, in the first pool of time-frequency resources, that the K sets of time-frequency resources are related to the first parameter.
As an embodiment, the problem to be solved by the present application includes: when a node initiates random access or random access is carried out due to link failure or multiple random accesses are not successful, or uplink transmission power is limited, especially when the propagation delay and propagation loss of a link are large, how to reliably access a system. The above method solves this problem by properly associating multiple sets of time-frequency resources for access and properly transmitting multiple uplink random access signals.
As an embodiment, the characteristics of the above method include: the first signaling includes an SIB (System Information Block), the second signaling includes an SIB (System Information Block), and the first signaling and the second signaling are transmitted on a PDSCH (Physical Downlink Shared Channel).
As an embodiment, the characteristics of the above method include: the first signaling and the second signaling are transmitted on a PSBCH (Physical Sidelink Broadcast Channel).
As an embodiment, the characteristics of the above method include: the first signaling is configured by dedicated signaling when the first node previously accessed the system.
As an embodiment, the characteristics of the above method include: the second signaling is configured by dedicated signaling when the first node previously accessed the system.
As an embodiment, the characteristics of the above method include: the Resource Unit is an RE (Resource Unit).
As an embodiment, the characteristics of the above method include: and the resource unit has certain time-frequency resources.
As an embodiment, the characteristics of the above method include: the resource elements are determined by the Frequency spacing of one subcarrier in the Frequency domain and the time duration of one OFDM (Orthogonal Frequency-division Multiplexing) symbol in the time domain.
As an embodiment, the resource units occupied by any two time-frequency resource sets in the K time-frequency resource sets in the sentence are orthogonal, including:
and resource units occupied by any two time-frequency resource sets in the K time-frequency resource sets are different.
As an example, K is equal to 2.
As an example, K is equal to 3.
As an example, K is equal to 4.
As an example, K is equal to 8.
As an embodiment, the characteristics of the above method include: the target signal in the target signal group includes a Preamble (Preamble sequence) signal.
As an embodiment, the characteristics of the above method include: the target signal in the target signal group is a msg1 (message 1) signal.
As an embodiment, the characteristics of the above method include: the target signal in the target signal group is a Preamble signal in a 2-step RACH (2-step Random Access Channel).
As an embodiment, the characteristics of the above method include: the target signal group is used for 2-step random access.
As an embodiment, the characteristics of the above method include: the target signal group is used for 2-step RACH.
As an embodiment, the characteristics of the above method include: the target signal group is used for 4-step random access.
As an embodiment, each of the K time-frequency resource sets comprises at least one resource unit.
As an embodiment, the first time-frequency resource pool includes all time-frequency resources used for random access in one cell.
As an embodiment, the first pool of time-frequency resources comprises all time-frequency resources for random access on one beam.
As an embodiment, the first pool of time-frequency resources includes all random access resources associated with one SSB (Synchronization Signal Block).
As an embodiment, at least two target signals of the K target signals in the sentence are different, including:
as an example, the two target signals are different in length;
as an embodiment, the sequences used to generate the two target signals are different;
as an embodiment, the sequences used to generate the two target signals are of different lengths;
as an embodiment, the sequences used to generate the two target signals are repeated a different number of times;
as an embodiment, the lengths of the guard slots included for generating the two target signals are different;
as an embodiment, the Guard slot is Guard Period;
as an embodiment, the guard time slot is a time period, and the guard time slot is used to avoid interference between signals;
as an embodiment, the sequences used to generate the two target signals are m-sequences.
As an embodiment, the sequences used to generate the two target signals are Gold sequences.
As an embodiment, the sequences used to generate the two target signals are Zadoff-Chu sequences.
As an embodiment, there is a one-to-one correspondence between the K time frequency resource sets and the K target signals, one time frequency resource set corresponds to only one target signal, and one target signal corresponds to only one time frequency resource set.
As an embodiment, the K time-frequency resource sets have a one-to-one mapping relationship with the K target signals.
As an embodiment, any one of the K target signals is transmitted on and only one of the K sets of time frequency resources, and any one of the K sets of time frequency resources carries and only one of the K target signals.
As one embodiment, the first parameter is a distance between the first node to a recipient of the target signal group.
As an example, the value of K increases as the distance between the first node to the receivers of the target signal group increases.
As an example, the value of K does not decrease as the distance between the first node to the receivers of the target signal group increases.
As an embodiment, when the distance between the first node and the receiver of the target signal group increases, resource units in the first pool of time-frequency resources that support generating the target signal using long sequences are determined as resource units in the K sets of time-frequency resources.
As an embodiment, when the distance between the first node and the receiver of the target signal group increases and the first node has positioning capability, resource units in the first pool of time-frequency resources that support generating the target signal using short sequences are determined as resource units in the K sets of time-frequency resources.
As an embodiment, the total number of resource units comprised within the K sets of time-frequency resources does not decrease when the distance between the first node to the receivers of the target signal group increases.
As one embodiment, as the distance between the first node to the recipients of the target signal group increases, the total number of resource units included within the K sets of time-frequency resources also increases.
As an embodiment, the first parameter is RSRP (Reference Signal Receiving Power) of a Signal transmitted by a receiver of the target Signal group received by the first node.
As an embodiment, when the RSRP is decreased, the resource elements in the first pool of time-frequency resources that support generating the target signal using long sequences are determined to be resource elements in the K sets of time-frequency resources.
As an embodiment, when the RSRP is decreased and the first node has positioning capability, resource elements in the first time-frequency resource pool that support generation of the target signal using short sequences are determined as resource elements in the K time-frequency resource sets.
As an embodiment, when the RSRP decreases, the total number of resource elements included in the K time-frequency resource sets does not decrease.
As an embodiment, when the RSRP decreases, the total number of resource elements included in the K time-frequency resource sets also increases.
As an embodiment, when the RSRP is decreased, resource elements in the first pool of time-frequency resources that support using more sequence repetitions are determined to be resource elements in the K sets of time-frequency resources.
As an embodiment, the characteristics of the above method include: the frequencies of the K time frequency resource sets are the same.
As an embodiment, the characteristics of the above method include: at least two time frequency resource sets with different frequencies exist in the K time frequency resource sets.
As an embodiment, the characteristics of the above method include: at least two time frequency resource sets with overlapped frequencies exist in the K time frequency resource sets.
As an embodiment, the characteristics of the above method include: at least two time frequency resource sets which are orthogonal on a frequency domain exist in the K time frequency resource sets.
As an embodiment, the characteristics of the above method include: at least two time frequency resource sets in the K time frequency resource sets exist, and target signals corresponding to the two time frequency resource sets have different Preamble formats.
As an embodiment, said sentence said K said target signals are used for the same random access, comprising:
as an embodiment, the K target signals are triggered by the same reason;
as an embodiment, the K target signals correspond to a same MAC (Medium Access Control) entity;
as an embodiment, the first node listens for feedback signals for the K target signals;
as an embodiment, the feedback signal heard by the first node relating to the first node that is used for random access response is considered to be a feedback signal for the same random access request;
as an embodiment, the feedback signals heard by the first node that are used for random access response are considered as feedback signals for K of the target signals.
As an example, the benefits of the above method include: and various random access signals are sent in the process of one random result, which is beneficial to enhancing the reliability of random access.
Specifically, according to an aspect of the present application, each of the K target signals starts with cyclic redundancy and ends with a guard time slot.
As an embodiment, the characteristics of the above method include: the Cyclic redundancy is CP (Cyclic Prefix).
As an embodiment, the characteristics of the above method include: the Guard slot is GP (Guard Period).
Specifically, according to an aspect of the present application, it is characterized in that time domain resources occupied by any two time frequency resource sets of the K time frequency resource sets are orthogonal.
Specifically, according to an aspect of the present application, it is determined that the K time-frequency resource sets are related to a first counter in the first time-frequency resource pool; the first counter is related to a number of random access attempts initiated by the first node before transmitting the set of target signals.
As an embodiment, the characteristics of the above method include: the first COUNTER includes PREAMBLE _ transition _ COUNTER.
As an embodiment, the first counter records the number of random access attempts.
As an embodiment, when the first node initiates random access, the value of the first counter is incremented by 1.
As an embodiment, when the first node successfully receives a response signal for the first node to initiate a random access request, the value of the first counter is set to 0.
As an embodiment, when the random access procedure of the first node is successful, the value of the first counter is set to 0.
As an embodiment, the first counter records the number of random access attempts initiated at maximum power.
As an embodiment, the first counter records the number of failed initial access attempts.
As one embodiment, the first counter records a number of times contention-based random access (CBRA) is initiated.
As one embodiment, the first counter records a number of times contention free based random access (CFRA) is initiated.
As an embodiment, the first counter records the number of random accesses triggered by a specific event.
Specifically, according to an aspect of this application, its characterized in that, the second time frequency resource set is K one in the time frequency resource set, the signal that the resource unit that the second time frequency resource set included was used for bearing includes the second signal, the second signal is the random access signal that node outside the first node sent, it is that K at least exists a resource unit in the resource unit that the leader sequence signal that the second signal adopted was shared resource unit outside the resource unit that the time frequency resource set occupied.
As an embodiment, the characteristics of the above method include: at least one time frequency resource set in the K time frequency resource sets is used for bearing random access signals sent by other nodes.
As an embodiment, the characteristics of the above method include: at least one time frequency resource set exists in the K time frequency resource sets, and random access signals sent by different nodes are multiplexed on the time frequency resource sets.
As an embodiment, the characteristics of the above method include: and the resource units occupied by the random access signal sent by the nodes except the first node and the target signal group are not identical.
As an embodiment, the characteristics of the above method include: there is a first resource unit used by both random access signals transmitted by nodes other than the first node and signals in the target signal group and a second resource unit used by random access signals transmitted by nodes other than the first node and not used by the target signal group.
Specifically, according to an aspect of the present application, a third time-frequency resource set is one of the K time-frequency resource sets, and signals carried by resource units included in the third time-frequency resource set include a third signal; the third signal is a signal for random access sent by a node other than the first node, a sender of the third signal only sends a preamble sequence signal in a random access process to which the third signal belongs, and a resource unit set formed by all resource units occupied by the third signal is equal to the third time-frequency resource set.
As an embodiment, the characteristics of the above method include: the random access signal transmitted by a node other than the first node in one random access attempt only comprises one preamble sequence signal and the one preamble sequence signal is transmitted only on the third time-frequency resource.
As an embodiment, the characteristics of the above method include: the target signal sent by the first node comprises a plurality of preamble sequence signals, and nodes other than the first node exist, the random access signal sent by the nodes other than the first node in one random access attempt only comprises one preamble sequence signal, and the one preamble sequence signal and the plurality of preamble sequence signals sent by the first node multiplex the time-frequency resources in the third time-frequency resource set.
As an embodiment, the recipients of the third signal are the same as the recipients of the target signal group.
As an embodiment, the receiver of the third signal is the same as the receiver of the target signal group, and the distance from the sender of the third signal to the receiver of the third signal is smaller than the distance from the first node to the receiver of the s.
As an embodiment, the receiver of the third signal is the same as the receiver of the target signal group, and the RSRP of the home cell of the third signal sender measured by the sender of the third signal is greater than the RSRP of the home cell of the first node measured by the first node.
As an example, the benefits of the above method include: when the number of the leader sequence signals or the number of the leader sequence signals sent by different nodes is different, the sent leader sequence signals are still allowed to multiplex the same time-frequency resources, which is beneficial to saving resources, increasing flexibility and improving resource utilization efficiency.
Specifically, according to an aspect of the present application, any one of the K time-frequency resource sets is used to independently carry a preamble sequence signal sent by a node other than the first node.
As an embodiment, the characteristics of the above method include: and the nodes except the first node exist, and random access signals sent by the nodes except the first node only occupy one time frequency resource set in the K time frequency resource sets.
As an embodiment, the characteristics of the above method include: there are nodes other than the first node, and resource units used by the random access signals selected by the nodes other than the first node are not equal to all resource units included in the K time-frequency resource sets.
As an embodiment, the characteristics of the above method include: there are nodes other than the first node that are allowed to transmit random access signals using or using only any one or more of the K sets of time-frequency resources.
As an embodiment, the characteristics of the above method include: nodes except the first node are allowed to use and only use the time frequency resource in one time frequency resource set in the K time frequency resource sets to send random access signals.
As an embodiment, the characteristics of the above method include: and sending a random access signal by using nodes except the first node and only using the time frequency resource in one time frequency resource set in the K time frequency resource sets.
As an embodiment, the characteristics of the above method include: and sending random access signals by nodes except the first node by using only all the time-frequency resources in one time-frequency resource set in the K time-frequency resource sets.
In particular, according to an aspect of the present application, the first receiver receives a third signaling, where the third signaling is used to limit sending random access signals on resource elements of one or more of the K time-frequency resource sets.
As an embodiment, the characteristics of the above method include: the third signaling is used for Baring.
As an embodiment, the characteristics of the above method include: the third signaling is used to restrict use of resource elements in the K sets of time-frequency resources by nodes other than the first node.
As an embodiment, the characteristics of the above method include: the third signaling is used to restrict use of resource elements in the K time-frequency resource sets by nodes using M preamble sequence signals in one access procedure, where M is a positive integer less than K.
In particular, according to one aspect of the present application, it is characterized in that said first receiver receives a fourth signaling, said fourth signaling being used for feeding back said set of target signals.
As an embodiment, the characteristics of the above method include: the fourth signaling is DCI (Downlink Control Information).
As an embodiment, the characteristics of the above method include: the fourth signaling is RAR (Random access response) signaling.
As an embodiment, the characteristics of the above method include: the fourth signaling includes a TCI (Transmission Configuration Indication).
As an embodiment, the characteristics of the above method include: the fourth signaling is transmitted on the PDSCH.
As an embodiment, the characteristics of the above method include: the fourth signaling is transmitted on a PDCCH (Physical Downlink Control Channel).
As an embodiment, the characteristics of the above method include: the fourth signaling is msg2 (message 2).
As an embodiment, the characteristics of the above method include: the fourth signaling is msgB (message B).
In particular, according to an aspect of the present application, it is characterized in that said first node is a user equipment.
In particular, according to one aspect of the present application, said first node is a relay.
Specifically, according to an aspect of the present application, the first node is a vehicle-mounted terminal.
In particular, according to one aspect of the present application, it is characterized in that said first node is an aircraft.
The application discloses a method in a second node used for wireless communication, which is characterized by comprising the following steps:
sending a first signaling and a second signaling;
receiving a target signal group;
the first signaling is used for indicating a first time-frequency resource pool, the first time-frequency resource pool comprises K time-frequency resource sets, and resource units occupied by any two time-frequency resource sets in the K time-frequency resource sets are orthogonal; the target signal group comprises K target signals, and at least two target signals of the K target signals are different; the second signaling is used for indicating that the K target signals respectively correspond to the K frequency resource sets one by one, and the target signal group is used for the same random access; k is a positive integer greater than 1, and the value of K is related to a first parameter; determining, in the first pool of time-frequency resources, that the K sets of time-frequency resources are related to the first parameter.
Specifically, according to an aspect of the present application, each of the K target signals starts with cyclic redundancy and ends with a guard time slot.
Specifically, according to an aspect of the present application, it is characterized in that time domain resources occupied by any two time frequency resource sets of the K time frequency resource sets are orthogonal.
Specifically, according to an aspect of the present application, it is determined that the K time-frequency resource sets are related to a first counter in the first time-frequency resource pool; the first counter is related to a number of random access attempts initiated by a sender of the target signal group prior to sending the target signal group.
Specifically, according to an aspect of this application, its characterized in that, the second time frequency resource set is K one in the time frequency resource set, the signal that the resource unit that the second time frequency resource set included was used for bearing includes the second signal, the second signal is the random access signal that node sent outside the sender of target signal group, it is K at least one resource unit exists in the resource unit that the leader sequence signal that the second signal adopted was occupied resource unit outside the resource unit that the time frequency resource set occupied.
Specifically, according to an aspect of the present application, a third time-frequency resource set is one of the K time-frequency resource sets, and signals carried by resource units included in the third time-frequency resource set include a third signal; the third signal is a signal for random access sent by a node other than the sender of the target signal group, the sender of the third signal only sends one preamble sequence signal in the random access process to which the third signal belongs, and a resource unit set formed by all resource units occupied by the third signal is equal to the third time-frequency resource set.
Specifically, according to an aspect of the present application, any one of the K time-frequency resource sets is used to carry a preamble sequence signal sent by a node other than a sender of the target signal group independently.
In particular, according to an aspect of the present application, the first transmitter transmits a third signaling, where the third signaling is used to restrict the transmission of random access signals on resource units of one or more of the K time frequency resource sets.
In particular, according to one aspect of the present application, it is characterized in that said first transmitter transmits a fourth signaling, said fourth signaling being used for feeding back said set of target signals.
In particular, according to one aspect of the present application, it is characterized in that said second node is a base station.
In particular, according to one aspect of the present application, it is characterized in that said second node is a relay.
Specifically, according to an aspect of the present application, it is characterized in that the second node is a vehicle-mounted terminal.
In particular, according to one aspect of the present application, it is characterized in that said second node is an aircraft.
In particular, according to one aspect of the present application, said second node is a satellite.
The present application discloses a first node for wireless communication, comprising:
a first receiver receiving a first signaling and a second signaling;
a first transmitter for transmitting a target signal group;
the first signaling is used for indicating a first time-frequency resource pool, the first time-frequency resource pool comprises K time-frequency resource sets, and resource units occupied by any two time-frequency resource sets in the K time-frequency resource sets are orthogonal; the target signal group comprises K target signals, and at least two of the K target signals are different; the second signaling is used for indicating that the K target signals respectively correspond to the K frequency resource sets one by one, and the target signal group is used for the same random access; k is a positive integer greater than 1, and the value of K is related to a first parameter; determining, in the first pool of time-frequency resources, that the K sets of time-frequency resources are related to the first parameter.
The present application discloses a second node for wireless communication, comprising:
a second transmitter for transmitting the first signaling and the second signaling;
a second receiver receiving a target signal group;
the first signaling is used for indicating a first time-frequency resource pool, the first time-frequency resource pool comprises K time-frequency resource sets, and resource units occupied by any two time-frequency resource sets in the K time-frequency resource sets are orthogonal; the target signal group comprises K target signals, and at least two target signals of the K target signals are different; the second signaling is used for indicating that the K target signals respectively correspond to the K frequency resource sets one by one, and the target signal group is used for the same random access; k is a positive integer greater than 1, and the value of K is related to a first parameter; determining, in the first pool of time-frequency resources, that the K sets of time-frequency resources are related to the first parameter.
As an example, compared with the conventional scheme, the method has the following advantages:
when the communication distance between the user equipment and the serving cell is long, the transmission delay is long, and especially when satellite communication is involved, if according to the conventional scheme, due to large propagation loss, the power of the user equipment is limited, and the transmitted random access signal cannot meet the requirement of the reception quality of the random access signal, which may cause access failure; on the other hand, because the transmission delay is longer, the user may not tolerate multiple access failures, and it is urgently needed to establish a more effective mechanism so that the user equipment can access the network more reliably, or can access the network with higher probability after fewer access attempts; on the other hand, if more resources are allocated to these power-limited users or users requiring more reliable access, the resources are wasted, and the system is also complicated. According to the method and the device, some resources are associated by utilizing the public access resources of other users to form more new and logical resources, and the resources are multiplexed with different random access signals transmitted by other users under other conditions, so that the access success rate can be increased, the time delay is reduced, the power consumption is reduced, the reliability is improved, the communication interruption time is reduced, the utilization rate of the resources is improved, and the complexity of a system is reduced.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof with reference to the accompanying drawings in which:
FIG. 1 shows a flow diagram of receiving first signaling and second signaling, sending a set of target signals, according to one embodiment of the application;
FIG. 2 shows a schematic diagram of a network architecture according to an embodiment of the present application;
figure 3 shows a schematic diagram of an embodiment of a radio protocol architecture for the user plane and the control plane according to an embodiment of the present application;
FIG. 4 shows a schematic diagram of a first node, a second node, according to an embodiment of the present application;
FIG. 5 shows a flow diagram of a transmission according to an embodiment of the present application;
FIG. 6 shows a flow diagram of a transmission according to an embodiment of the present application;
FIG. 7 illustrates a schematic diagram of a target signal according to an embodiment of the present application;
FIG. 8 illustrates a schematic diagram of a target signal according to an embodiment of the present application;
FIG. 9 illustrates a schematic diagram of a first time-frequency resource pool according to one embodiment of the present application;
fig. 10 illustrates a schematic diagram of a second set of time-frequency resources according to an embodiment of the application;
FIG. 11 illustrates a schematic diagram of a third set of time-frequency resources, according to an embodiment of the present application;
fig. 12 illustrates a schematic diagram of determining K sets of time-frequency resources in a first pool of time-frequency resources in relation to a first counter according to an embodiment of the present application;
fig. 13 illustrates a diagram that third signaling is used to restrict the transmission of random access signals on resource elements in one or more of K sets of time-frequency resources according to an embodiment of the present application;
FIG. 14 shows a block diagram of a processing device for use in a first node according to an embodiment of the application;
fig. 15 shows a block diagram of a processing arrangement for use in a second node according to an embodiment of the present application.
Detailed Description
The technical solutions of the present application will be further described in detail with reference to the accompanying drawings, and it should be noted that the embodiments and features of the embodiments in the present application can be arbitrarily combined with each other without conflict.
Example 1
Embodiment 1 illustrates a flowchart of receiving a first signaling and a second signaling, and transmitting a target signal group according to an embodiment of the present application, as shown in fig. 1. In fig. 1, each block represents a step, and it is particularly emphasized that the sequence of the blocks in the figure does not represent a chronological relationship between the represented steps.
In embodiment 1, a first node in the present application receives a first signaling and a second signaling in step 101; transmitting a target signal group in step 102; the first signaling is used for indicating a first time-frequency resource pool, the first time-frequency resource pool comprises K time-frequency resource sets, and resource units occupied by any two time-frequency resource sets in the K time-frequency resource sets are orthogonal; the target signal group comprises K target signals, and at least two target signals of the K target signals are different; the second signaling is used for indicating that the K target signals respectively correspond to the K frequency resource sets one by one, and the target signal group is used for the same random access; k is a positive integer greater than 1, and the value of K is related to a first parameter; determining, in the first pool of time-frequency resources, that the K sets of time-frequency resources are related to the first parameter.
As an embodiment, the first node is a UE (User Equipment).
As one embodiment, the first signaling and the second signaling are transmitted on a PDSCH.
As an embodiment, the first signaling and the second signaling are transmitted on a PSBCH (Physical Sidelink Broadcast Channel).
As an embodiment, the first signaling and the second signaling are sent on a PDCCH.
As an embodiment, the first signaling is configured by dedicated signaling the last time the first node accesses the system.
As an embodiment, the second signaling is configured by dedicated signaling the last time the first node accesses the system.
As an embodiment, the Resource Unit is an RE (Resource Unit).
As an embodiment, the resource unit includes a certain time-frequency resource.
As an embodiment, the resource unit is determined by a Frequency point interval of one subcarrier in a Frequency domain, and is determined by a time lasting by one OFDM (Orthogonal Frequency-division Multiplexing) symbol in a time domain.
As an embodiment, the resource unit is determined by one subcarrier bandwidth in a frequency domain and by a time duration of one OFDM symbol in a time domain.
As an embodiment, the resource units occupied by any two time-frequency resource sets in the K time-frequency resource sets in the sentence are orthogonal, and the method includes:
resource units occupied by any two time-frequency resource sets in the K time-frequency resource sets are different;
and the intersection of any two time-frequency resource sets in the K time-frequency resource sets is empty.
As an example, K is equal to 6.
As an example, K is equal to 16.
As an example, K is equal to 32.
As an example, K is equal to 64.
As one example, K equals 256.
As an embodiment, the target signals in the target signal group are transmitted on a PRACH (Physical Random access Channel).
As an embodiment, the target signal in the target signal group is a Preamble signal in a 2-step RACH (2-step Random Access Channel).
As an embodiment, each of the K time-frequency resource sets comprises at least one resource unit.
As an embodiment, at least two of the K time-frequency resource sets exist, and the number of resource units included in the two time-frequency resource sets is different.
As an embodiment, the first time-frequency resource pool includes all time-frequency resources used for random access in one cell.
As an embodiment, the first pool of time-frequency resources comprises all time-frequency resources associated with the same beam for random access.
As an embodiment, the first pool of time-frequency resources includes all random access resources associated with one SSB (Synchronization Signal Block).
As an embodiment, the first time-frequency resource pool includes all random access resources belonging to the same carrier.
As an embodiment, at least two target signals of the K target signals in the sentence are different, including:
as an example, the two target signals are different in length;
as an embodiment, the formats of the two target signals are different;
as an embodiment, the sequences used to generate the two target signals are different;
as an embodiment, the sequences used to generate the two target signals are of different lengths;
as an embodiment, the cyclic redundancy used to generate the two target signals is of different length;
as an embodiment, the lengths of the guard slots included for generating the two target signals are different;
as an embodiment, the sequence for generating the K number of the target signals comprises an m-sequence.
As an embodiment, the sequence used to generate the K target signals comprises a Gold sequence.
As an embodiment, the sequence used to generate the K target signals comprises a Zadoff-Chu sequence.
As an embodiment, there is a one-to-one correspondence between the K time frequency resource sets and the K target signals, where one time frequency resource set corresponds to only one target signal, and one target signal corresponds to only one time frequency resource set.
As an embodiment, the K sets of time frequency resources have an association relationship with the K sets of target signals, one set of time frequency resources is associated with only one target signal, and one target signal is associated with only one set of time frequency resources.
As an embodiment, the K time-frequency resource sets have a one-to-one mapping relationship with the K target signals.
As an embodiment, any one of the K target signals is transmitted on and only one of the K sets of time frequency resources, and any one of the K sets of time frequency resources carries and only one of the K target signals.
As one embodiment, the first parameter is a distance between the first node to a recipient of the target signal group.
As one example, the value of K increases as the distance between the first node to the receiver of the target signal group increases.
As an example, the value of K does not decrease as the distance between the first node to the receiver of the target signal group increases.
As an embodiment, when the distance between the first node and the receiver of the target signal group increases, resource units in the first pool of time-frequency resources that support generating the target signal using long sequences are determined as resource units in the K sets of time-frequency resources.
As an embodiment, when the distance between the first node and the receiver of the target signal group increases and the first node has positioning capability, resource units in the first pool of time-frequency resources that support generating the target signal using short sequences are determined as resource units in the K sets of time-frequency resources.
As an embodiment, the total number of resource units comprised within the K sets of time-frequency resources does not decrease when the distance between the first node to the receivers of the target signal group increases.
As an embodiment, as the distance between the first node to the receivers of the target signal group increases, the total number of resource units included within the K sets of time-frequency resources also increases.
As an embodiment, the first parameter is RSRP (Reference Signal Receiving Power) of a Signal transmitted by a receiver of the target Signal group received by the first node.
As an embodiment, the value of K increases when the RSRP decreases.
As an embodiment, when the RSRP decreases, the value of K does not decrease.
As an embodiment, when the RSRP is decreased, the resource elements in the first pool of time-frequency resources that support generating the target signal using long sequences are determined to be resource elements in the K sets of time-frequency resources.
As an embodiment, when the RSRP is lower than a first threshold and the first node has positioning capability, a resource element in the first time-frequency resource pool that supports generation of the target signal using a short sequence is determined as a resource element in the K time-frequency resource sets.
As one example, the short sequence comprises a length 139 sequence.
As an embodiment, when the RSRP is lower than a first threshold and the first node has positioning capability, a resource element in the first time-frequency resource pool that supports generation of the target signal using a long sequence is determined as a resource element in the K time-frequency resource sets.
As one example, the long sequence comprises a sequence of length 839.
As one embodiment, the first threshold comprises-90 dB.
For one embodiment, the first threshold comprises-110 dB.
As an embodiment, when the RSRP decreases, the total number of resource elements included in the K time-frequency resource sets does not decrease.
As an embodiment, when the RSRP decreases, the total number of resource elements included in the K time-frequency resource sets also increases.
As an embodiment, when the RSRP is decreased, resource elements in the first pool of time-frequency resources that support using more sequence repetitions are determined to be resource elements in the K sets of time-frequency resources.
As an embodiment, the first parameter is RSRQ (Reference Signal Receiving Quality) of a Signal transmitted by a receiver of the target Signal group received by the first node.
As an embodiment, when the RSRQ decreases, the value of K increases.
As an embodiment, when the RSRQ decreases, the value of K does not decrease.
As an embodiment, when the RSRQ decreases, the resource elements of the first pool of time-frequency resources that support generating the target signal using long sequences are determined to be resource elements of the K sets of time-frequency resources.
As an embodiment, when the RSRQ is lower than a second threshold and the first node has positioning capability, resource elements in the first time-frequency resource pool that support generating the target signal using short sequences are determined as resource elements in the K time-frequency resource sets.
As one example, the short sequence comprises a length 139 sequence.
As an embodiment, when the RSRQ is lower than a second threshold and the first node has no positioning capability, resource elements of the first time-frequency resource pool that support generating the target signal using a long sequence are determined to be resource elements of the K time-frequency resource sets.
As one example, the long sequence comprises a sequence of length 839.
As one embodiment, the second threshold comprises-3 dB.
As an embodiment, the second threshold comprises-8 dB.
As one embodiment, the second threshold comprises-12 dB.
As one embodiment, the second threshold comprises-13 dB.
As an embodiment, the second threshold comprises-15 dB.
As an embodiment, when the RSRQ decreases, the total number of resource elements included within the K time-frequency resource sets does not decrease.
As an embodiment, when the RSRQ decreases, the total number of resource elements included in the K time-frequency resource sets also increases.
As an embodiment, when the RSRQ decreases, resource elements in the first pool of time-frequency resources that support using more sequence repetitions are determined to be resource elements in the K sets of time-frequency resources.
As an embodiment, the first parameter is whether the first node has positioning capability.
As an embodiment, when the RSRQ of the first node home cell measured by the first node is lower than a second threshold and the first node has positioning capability, resource elements in the first time-frequency resource pool that support generating the target signal using short sequences are determined to be resource elements in the K time-frequency resource sets.
As an embodiment, when the RSRQ of the first node home cell measured by the first node is lower than a second threshold and the first node does not have positioning capability, resource elements in the first time-frequency resource pool that support generation of the target signal using long sequences are determined as resource elements in the K time-frequency resource sets.
As an embodiment, the first parameter is a type of the first node; when the first node is a machine communication device (MTC) or an Internet of things (IoT) device, the total number of resource units in the K time-frequency resource sets is higher than when the first node is of other terminal types.
As one embodiment, the first parameter is a type of the first node; when the first node is a low-power-consumption terminal, the total number of resource units in the K time-frequency resource sets is greater than the total number of resource units in the K time-frequency resource sets determined when the first node is a terminal of another type.
As an embodiment, the first parameter is a distance of the first node from an edge of the selected cell, and when the distance of the first node from the edge of the selected cell is below a third threshold, the determined total number of resource units in the K of the sets of time-frequency resources is greater than the determined total number of resource units in the K of the sets of time-frequency resources when the distance of the first node from the edge of the selected cell is above the third threshold.
As an embodiment, the unit of the third threshold is kilometers, and a value is a positive number.
As an embodiment, the third threshold unit is meter, and takes a positive value.
As an embodiment, the first parameter is a distance between the first node and an edge of the selected cell, and when the distance between the first node and the edge of the selected cell is lower than a fourth threshold, the determined value of K is greater than the determined value of K when the distance between the first node and the edge of the selected cell is higher than the fourth threshold.
As an embodiment, the fourth threshold unit is kilometers, and takes a positive value.
As an embodiment, the fourth threshold unit is meter, and takes a positive number.
As an embodiment, the first parameter is a time remaining for performing next cell reselection or handover, where, when the remaining time is lower than a fifth threshold, the value of K is greater than that when the remaining time is higher than the fifth threshold.
As an embodiment, the fifth threshold unit is second, and takes a positive value.
As an embodiment, the fifth threshold unit is a frame number, and a positive number is taken.
As an embodiment, the first parameter is estimated time left for next cell reselection or handover by the first node, and when the time left is lower than a sixth threshold, the determined total number of resource units in the K time-frequency resource sets is greater than the determined total number of resource units in the K time-frequency resource sets when the time left is greater than the sixth threshold.
As an embodiment, the sixth threshold unit is seconds and takes a positive value.
As an embodiment, the sixth threshold unit is a frame number, and the value is a positive number.
As an embodiment, the frequencies of the K time-frequency resource sets are the same.
In an embodiment, at least two time-frequency resource sets with different frequencies exist in the K time-frequency resource sets.
In an embodiment, at least two frequency-overlapping time-frequency resource sets exist in the K time-frequency resource sets.
In an embodiment, at least two sets of time-frequency resources orthogonal in frequency domain exist in the K sets of time-frequency resources.
As an embodiment, at least two time frequency resource sets exist in the K time frequency resource sets, and target signals corresponding to the two time frequency resource sets have different Preamble formats (Preamble sequence formats).
As an embodiment, said sentence, said K target signals are used for the same random access, including:
as an embodiment, the K target signals are triggered by the same reason;
as an embodiment, the K target signals correspond to a same MAC (Medium Access Control) entity;
as an embodiment, the K target signals are transmitted on the same BWP (Bandwidth Part);
as an embodiment, the first node listens for feedback signals for the K target signals;
as an embodiment, the feedback signal heard by the first node relating to the first node that is used for random access response is considered to be a feedback signal for the same random access request;
as an embodiment, the feedback signals heard by the first node and used for random access response are considered as feedback signals for K of the target signals.
As an embodiment, the first signaling comprises a Random access configuration (Random access configuration) information element;
as one embodiment, the first signaling comprises a rach-ConfigDedicated cell.
For one embodiment, the first signaling comprises a rach-ConfigCommon cell.
As one embodiment, the first signaling comprises a BWP-UplinkCommon cell
As an embodiment, the first signaling comprises a BeamFailureRecoveryConfig cell.
As an embodiment, the first signaling comprises a rach-ConfigBFR information element.
As an embodiment, the first signaling includes a PRACH Configuration Index (Physical Random Access Channel Configuration Index).
As an embodiment, the second signaling explicitly indicates that the K target signals respectively correspond to the K sets of frequency resources one-to-one.
As an embodiment, the K target signals are transmitted on a PUCCH (Physical Uplink Control Channel).
As an embodiment, the first counter records the number of random accesses using preamble sequences in Group a (Group a) for access.
As an embodiment, the first counter records the number of random accesses using preamble sequences in Group B (Group B) for access.
As one embodiment, the first counter is SSB based.
As one embodiment, the first counter is cell-based.
As one embodiment, the first counter is based on an antenna port.
Example 2
Embodiment 2 illustrates a schematic diagram of a network architecture according to the present application, as shown in fig. 2.
FIG. 2 illustrates a diagram of a network architecture 200 for the 5G NR, LTE (Long-Term Evolution), and LTE-A (Long-Term Evolution Advanced) systems. The 5G NR or LTE network architecture 200 may be referred to as a 5GS (5G System)/EPS (Evolved Packet System) 200 or some other suitable terminology. The 5GS/EPS 200 may include one or more UEs (User Equipment) 201, ng-RAN (next generation radio access network) 202,5GC (5G Core network )/EPC (Evolved Packet Core) 210, hss (Home Subscriber Server)/UDM (Unified Data Management) 220, and internet service 230. The 5GS/EPS may interconnect with other access networks, but these entities/interfaces are not shown for simplicity. As shown, the 5GS/EPS provides packet switched services, however those skilled in the art will readily appreciate that the various concepts presented throughout this application may be extended to networks providing circuit switched services or other cellular networks. The NG-RAN includes NR node bs (gnbs) 203 and other gnbs 204. The gNB203 provides user and control plane protocol terminations towards the UE 201. The gnbs 203 may be connected to other gnbs 204 via an Xn interface (e.g., backhaul). The gNB203 may also be referred to as a base station, a base transceiver station, a radio base station, a radio transceiver, a transceiver function, a Basic Service Set (BSS), an Extended Service Set (ESS), a TRP (transmitting receiving node), or some other suitable terminology. The gNB203 provides the UE201 with an access point to the 5GC/EPC210. Examples of the UE201 include a cellular phone, a smart phone, a Session Initiation Protocol (SIP) phone, a laptop, a Personal Digital Assistant (PDA), a satellite radio, non-terrestrial base station communications, satellite mobile communications, a global positioning system, a multimedia device, a video device, a digital audio player (e.g., MP3 player), a camera, a game console, a drone, an aircraft, a narrowband internet of things device, a machine type communication device, a terrestrial vehicle, an automobile, a wearable device, or any other similar functioning device. UE201 may also be referred to by those skilled in the art as a mobile station, a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless communications device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a client, or some other suitable terminology. The gNB203 is connected to the 5GC/EPC210 via an S1/NG interface. The 5GC/EPC210 includes MME (Mobility Management Entity)/AMF (Authentication Management domain)/SMF (Session Management Function) 211, other MME/AMF/SMF214, S-GW (serving Gateway)/UPF (User Plane Function) 212, and P-GW (Packet data Network Gateway)/UPF 213. The MME/AMF/SMF211 is a control node that handles signaling between the UE201 and the 5GC/EPC210. In general, the MME/AMF/SMF211 provides bearer and connection management. All user IP (Internet protocol) packets are transported through the S-GW/UPF212, and the S-GW/UPF212 itself is connected to the P-GW/UPF213. The P-GW provides UE IP address allocation as well as other functions. The P-GW/UPF213 is connected to the internet service 230. The internet service 230 includes an operator-corresponding internet protocol service, and may specifically include the internet, an intranet, an IMS (IP Multimedia Subsystem), and a packet-switched streaming service.
As an embodiment, the UE201 corresponds to the first node in this application.
As an embodiment, the UE201 supports transmission in a non-terrestrial network (NTN).
As an embodiment, the UE201 supports transmission in a large delay-difference network.
As an embodiment, the gNB203 corresponds to the second node in this application.
As one embodiment, the gNB203 supports transmissions over a non-terrestrial network (NTN).
As an embodiment, the gNB203 supports transmission in large latency difference networks.
Example 3
Embodiment 3 shows a schematic diagram of an embodiment of a radio protocol architecture for the user plane and the control plane according to the present application, as shown in fig. 3. Fig. 3 is a schematic diagram illustrating an embodiment of a radio protocol architecture for a user plane 350 and a control plane 300, fig. 3 showing the radio protocol architecture for the control plane 300 between a first node (UE, satellite or aircraft in a gNB or NTN) and a second node (gNB, satellite or aircraft in a UE or NTN), or two UEs, in three layers: layer 1, layer 2 and layer 3. Layer 1 (L1 layer) is the lowest layer and implements various PHY (physical layer) signal processing functions. The L1 layer will be referred to herein as PHY301. Layer 2 (L2 layer) 305 is above PHY301 and is responsible for the link between the first and second nodes and the two UEs through PHY301. The L2 layer 305 includes a MAC (Medium Access Control) sublayer 302, an RLC (Radio Link Control) sublayer 303, and a PDCP (Packet Data Convergence Protocol) sublayer 304, which terminate at the second node. The PDCP sublayer 304 provides multiplexing between different radio bearers and logical channels. The PDCP sublayer 304 also provides security by ciphering data packets and provides handoff support between second nodes to the first node. The RLC sublayer 303 provides segmentation and reassembly of upper layer packets, retransmission of lost packets, and reordering of packets to compensate for out-of-order reception due to HARQ. The MAC sublayer 302 provides multiplexing between logical and transport channels. The MAC sublayer 302 is also responsible for allocating the various radio resources (e.g., resource blocks) in one cell between the first nodes. The MAC sublayer 302 is also responsible for HARQ operations. A RRC (Radio Resource Control) sublayer 306 in layer 3 (L3 layer) in the Control plane 300 is responsible for obtaining Radio resources (i.e., radio bearers) and configuring the lower layers using RRC signaling between the second node and the first node. The radio protocol architecture of the user plane 350 includes layer 1 (L1 layer) and layer 2 (L2 layer), the radio protocol architecture in the user plane 350 for the first and second nodes is substantially the same for the physical layer 351, the PDCP sublayer 354 in the L2 layer 355, the RLC sublayer 353 in the L2 layer 355, and the MAC sublayer 352 in the L2 layer 355 as the corresponding layers and sublayers in the control plane 300, but the PDCP sublayer 354 also provides header compression for upper layer packets to reduce radio transmission overhead. The L2 layer 355 in the user plane 350 further includes a Service Data Adaptation Protocol (SDAP) sublayer 356, and the SDAP sublayer 356 is responsible for mapping between QoS streams and Data Radio Bearers (DRBs) to support Service diversity. Although not shown, the first node may have several upper layers above the L2 layer 355, including a network layer (e.g., IP layer) that terminates at the P-GW on the network side and an application layer that terminates at the other end of the connection (e.g., far end UE, server, etc.).
The radio protocol architecture of fig. 3 applies to the first node in this application as an example.
As an example, the radio protocol architecture in fig. 3 is applicable to the second node in this application.
As an embodiment, the first signaling in the present application is generated in the PHY301 or the MAC302 or the RRC306.
As an embodiment, the second signaling in this application is generated in the PHY301 or the MAC302 or the RRC306.
As an example, the target signal group in the present application is generated in the PHY301 or the MAC302.
As an embodiment, the third signaling in this application is generated in the PHY301 or the MAC302 or the RRC306.
As an embodiment, the fourth signaling in this application is generated in the PHY301 or the MAC302 or the RRC306.
Example 4
Embodiment 4 shows a schematic diagram of a first communication device and a second communication device according to the present application, as shown in fig. 4. Fig. 4 is a block diagram of a first communication device 450 and a second communication device 410 communicating with each other in an access network.
The first communications device 450 includes a controller/processor 459, a memory 460, a data source 467, a transmit processor 468, a receive processor 456, a multi-antenna transmit processor 457, a multi-antenna receive processor 458, a transmitter/receiver 454, and an antenna 452.
The second communication device 410 includes a controller/processor 475, a memory 476, a receive processor 470, a transmit processor 416, a multiple antenna receive processor 472, a multiple antenna transmit processor 471, a transmitter/receiver 418, and an antenna 420.
In the transmission from the second communication device 410 to the first communication device 450, at the second communication device 410, upper layer data packets from the core network are provided to the controller/processor 475. The controller/processor 475 implements the functionality of the L2 layer. In transmissions from the second communications device 410 to the first communications device 450, the controller/processor 475 provides header compression, encryption, packet segmentation and reordering, multiplexing between logical and transport channels, and radio resource allocation to the first communications device 450 based on various priority metrics. The controller/processor 475 is also responsible for retransmission of lost packets, and signaling to the first communication device 450. The transmit processor 416 and the multi-antenna transmit processor 471 implement various signal processing functions for the L1 layer (i.e., the physical layer). The transmit processor 416 implements coding and interleaving to facilitate Forward Error Correction (FEC) at the second communication device 410, as well as mapping of signal constellation based on various modulation schemes (e.g., binary Phase Shift Keying (BPSK), quadrature Phase Shift Keying (QPSK), M-phase shift keying (M-PSK), M-quadrature amplitude modulation (M-QAM)). The multi-antenna transmit processor 471 performs digital spatial precoding, including codebook-based precoding and non-codebook based precoding, and beamforming processing on the coded and modulated symbols to generate one or more spatial streams. Transmit processor 416 then maps each spatial stream to subcarriers, multiplexes with reference signals (e.g., pilots) in the time and/or frequency domain, and then uses an Inverse Fast Fourier Transform (IFFT) to generate the physical channels carrying the time-domain multicarrier symbol streams. The multi-antenna transmit processor 471 then performs transmit analog precoding/beamforming operations on the time domain multi-carrier symbol stream. Each transmitter 418 converts the baseband multicarrier symbol stream provided by the multi-antenna transmit processor 471 into a radio frequency stream that is then provided to a different antenna 420.
In a transmission from the second communications apparatus 410 to the first communications apparatus 450, each receiver 454 receives a signal through its respective antenna 452 at the first communications apparatus 450. Each receiver 454 recovers information modulated onto a radio frequency carrier and converts the radio frequency stream into a baseband multi-carrier symbol stream that is provided to a receive processor 456. Receive processor 456 and multi-antenna receive processor 458 implement the various signal processing functions of the L1 layer. A multi-antenna receive processor 458 performs receive analog precoding/beamforming operations on the baseband multi-carrier symbol stream from the receiver 454. Receive processor 456 converts the received analog precoded/beamformed baseband multicarrier symbol stream from the time domain to the frequency domain using a Fast Fourier Transform (FFT). In the frequency domain, the physical layer data signals and the reference signals to be used for channel estimation are demultiplexed by the receive processor 456, and the data signals are subjected to multi-antenna detection in the multi-antenna receive processor 458 to recover any spatial streams destined for the first communication device 450. The symbols on each spatial stream are demodulated and recovered at a receive processor 456 and soft decisions are generated. The receive processor 456 then decodes and deinterleaves the soft decisions to recover the upper layer data and control signals transmitted by the second communications device 410 on the physical channel. The upper layer data and control signals are then provided to a controller/processor 459. The controller/processor 459 implements the functions of the L2 layer. The controller/processor 459 may be associated with a memory 460 that stores program codes and data. Memory 460 may be referred to as a computer-readable medium. In transmissions from the second communications device 410 to the second communications device 450, the controller/processor 459 provides demultiplexing between transport and logical channels, packet reassembly, deciphering, header decompression, control signal processing to recover upper layer packets from the core network. The upper layer packet is then provided to all protocol layers above the L2 layer. Various control signals may also be provided to L3 for L3 processing.
In a transmission from the first communications device 450 to the second communications device 410, a data source 467 is used at the first communications device 450 to provide upper layer data packets to a controller/processor 459. Data source 467 represents all protocol layers above the L2 layer. Similar to the send function at the second communications apparatus 410 described in the transmission from the second communications apparatus 410 to the first communications apparatus 450, the controller/processor 459 implements header compression, encryption, packet segmentation and reordering, and multiplexing between logical and transport channels based on radio resource allocation, implementing L2 layer functions for the user plane and control plane. The controller/processor 459 is also responsible for retransmission of lost packets and signaling to said second communications device 410. A transmit processor 468 performs modulation mapping, channel coding, and digital multi-antenna spatial precoding by a multi-antenna transmit processor 457 including codebook-based precoding and non-codebook based precoding, and beamforming, and the transmit processor 468 then modulates the resulting spatial streams into multi-carrier/single-carrier symbol streams, which are provided to different antennas 452 via a transmitter 454 after analog precoding/beamforming in the multi-antenna transmit processor 457. Each transmitter 454 first converts the baseband symbol stream provided by the multi-antenna transmit processor 457 into a radio frequency symbol stream and provides the radio frequency symbol stream to the antenna 452.
In a transmission from the first communication device 450 to the second communication device 410, the functionality at the second communication device 410 is similar to the receiving functionality at the first communication device 450 described in the transmission from the second communication device 410 to the first communication device 450. Each receiver 418 receives an rf signal through its respective antenna 420, converts the received rf signal to a baseband signal, and provides the baseband signal to a multi-antenna receive processor 472 and a receive processor 470. The receive processor 470 and the multiple antenna receive processor 472 collectively implement the functions of the L1 layer. The controller/processor 475 implements L2 layer functions. The controller/processor 475 may be associated with a memory 476 that stores program codes and data. Memory 476 may be referred to as a computer-readable medium. In transmission from the first communications device 450 to the second communications device 410, the controller/processor 475 provides demultiplexing between transport and logical channels, packet reassembly, deciphering, header decompression, control signal processing to recover upper layer packets from the UE 450. Upper layer data packets from the controller/processor 475 may be provided to a core network.
As an embodiment, the first communication device 450 apparatus includes: at least one processor and at least one memory including computer program code; the at least one memory and the computer program code configured to, for use with the at least one processor, the first communication device 450 apparatus at least: receiving a first signaling and a second signaling; transmitting a target signal group; the first signaling is used for indicating a first time-frequency resource pool, the first time-frequency resource pool comprises K time-frequency resource sets, and resource units occupied by any two time-frequency resource sets in the K time-frequency resource sets are orthogonal; the target signal group comprises K target signals, and at least two target signals of the K target signals are different; the second signaling is used for indicating that the K target signals respectively correspond to the K frequency resource sets one by one, and the target signal group is used for the same random access; k is a positive integer greater than 1, and the value of K is related to a first parameter; determining, in the first pool of time-frequency resources, that the K sets of time-frequency resources are related to the first parameter.
As an embodiment, the first communication device 450 includes: a memory storing a program of computer readable instructions that when executed by at least one processor result in actions comprising: receiving a first signaling and a second signaling; transmitting a target signal group; the first signaling is used for indicating a first time-frequency resource pool, the first time-frequency resource pool comprises K time-frequency resource sets, and resource units occupied by any two time-frequency resource sets in the K time-frequency resource sets are orthogonal; the target signal group comprises K target signals, and at least two target signals of the K target signals are different; the second signaling is used for indicating that the K target signals respectively correspond to the K frequency resource sets one by one, and the target signal group is used for the same random access; k is a positive integer greater than 1, and the value of K is related to a first parameter; determining, in the first pool of time-frequency resources, that the K sets of time-frequency resources are related to the first parameter.
As an embodiment, the second communication device 410 apparatus includes: at least one processor and at least one memory including computer program code; the at least one memory and the computer program code are configured for use with the at least one processor. The second communication device 410 means at least: sending a first signaling and a second signaling; receiving a target signal group; the first signaling is used for indicating a first time-frequency resource pool, the first time-frequency resource pool comprises K time-frequency resource sets, and resource units occupied by any two time-frequency resource sets in the K time-frequency resource sets are orthogonal; the target signal group comprises K target signals, and at least two of the K target signals are different; the second signaling is used for indicating that the K target signals respectively correspond to the K frequency resource sets one by one, and the target signal group is used for the same random access; k is a positive integer greater than 1, and the value of K is related to a first parameter; determining, in the first pool of time-frequency resources, that the K sets of time-frequency resources are related to the first parameter.
As an embodiment, the second communication device 410 apparatus includes: a memory storing a program of computer readable instructions that when executed by at least one processor result in actions comprising: sending a first signaling and a second signaling; receiving a target signal group; the first signaling is used for indicating a first time-frequency resource pool, the first time-frequency resource pool comprises K time-frequency resource sets, and resource units occupied by any two time-frequency resource sets in the K time-frequency resource sets are orthogonal; the target signal group comprises K target signals, and at least two target signals of the K target signals are different; the second signaling is used for indicating that the K target signals respectively correspond to the K frequency resource sets one by one, and the target signal group is used for the same random access; k is a positive integer greater than 1, and the value of K is related to a first parameter; determining, in the first pool of time-frequency resources, that the K sets of time-frequency resources are related to the first parameter.
As an embodiment, the first communication device 450 corresponds to a first node in the present application.
As an embodiment, the second communication device 410 corresponds to a second node in the present application.
As an embodiment, the first communication device 450 is a UE.
As an embodiment, the first communication device 450 is a vehicle-mounted terminal.
For one embodiment, the second communication device 410 is a base station.
For one embodiment, the second communication device 410 is a UE.
The second communication device 410 is a satellite, as one example.
For one embodiment, receiver 456 (including antenna 460), receive processor 452, and controller/processor 490 are used to receive the first signaling and the second signaling.
For one embodiment, receiver 456 (including antenna 460), receive processor 452, and controller/processor 490 are used to receive the third signaling.
For one embodiment, receiver 456 (including antenna 460), receive processor 452, and controller/processor 490 are used to receive the fourth signaling.
For one embodiment, a transmitter 456 (including an antenna 460), a transmit processor 455, and a controller/processor 490 are used to transmit the target signal group in this application.
For one embodiment, the transmitter 416 (including the antenna 420), the transmit processor 412, and the controller/processor 440 are used to transmit the first signaling and the second signaling in this application.
For one embodiment, the transmitter 416 (including the antenna 420), the transmit processor 412, and the controller/processor 440 are used to transmit the third signaling.
For one embodiment, the transmitter 416 (including the antenna 420), the transmit processor 412, and the controller/processor 440 are used to transmit the fourth signaling.
For one embodiment, receiver 416 (including antenna 420), receive processor 412, and controller/processor 440 are used to receive the set of target signals in this application.
For one embodiment, controller/processor 490 is used to start the first counter in this application.
Example 5
Embodiment 5 illustrates a wireless signal transmission flow chart according to an embodiment of the present application, as shown in fig. 5. In fig. 5, the second node N02 is a serving cell base station of the first node U01, and it is specifically illustrated that the sequence in this example does not limit the signal transmission sequence and the implementation sequence in this application.
For theSecond node N02In step S5201, the first signaling and the second signaling are transmitted.
For theFirst node U01In step S5101, the first signaling and the second signaling are received, in step S5103, the value of K and K sets of time-frequency resources are determined, and in step S5104, the target signal group is sent.
In embodiment 5, the first signaling in this application is used to indicate a first time-frequency resource pool, where the first time-frequency resource pool includes K time-frequency resource sets, and resource units occupied by any two time-frequency resource sets in the K time-frequency resource sets are orthogonal; the target signal group comprises K target signals, and at least two of the K target signals are different; the second signaling is used for indicating that the K target signals respectively correspond to the K frequency resource sets one by one, and the target signal group is used for the same random access; k is a positive integer greater than 1, and the value of K is related to a first parameter; determining, in the first pool of time-frequency resources, that the K sets of time-frequency resources are related to the first parameter.
As an embodiment, an interface of the first node U01 to communicate with the second node N02 is a Uu interface.
As an embodiment, the first signaling is an RRC signaling.
As an embodiment, the second signaling is an RRC signaling.
As an embodiment, the first signaling includes a Random access configuration (Random access configuration) message; the first signaling comprises a PRACH Configuration Index.
As an embodiment, the first signaling includes a PRACH Configuration Index (Physical Random Access Channel Configuration Index).
As an embodiment, the first time-frequency resource pool includes time-frequency resources for Random access, and the configuration manner of the first time-frequency resource pool includes using Random access configuration signaling.
As an embodiment, the second signaling explicitly indicates that the K target signals respectively correspond to the K sets of frequency resources one-to-one.
As an embodiment, the second signaling is used to indicate: all Random Access Occasions (Random Access time instants) associated with one SSB (Synchronization Signal Block) constitute the first time-frequency resource pool, and K consecutive ones of the Random Access Occasions are determined as the K time-frequency resource sets.
As an embodiment, the second signaling is used to indicate: all Random Access Occasions (Random Access time instants) associated with one SSB constitute the first time-frequency resource pool, and K of the Random Access Occasions occupying different OFDM symbols are determined as the K time-frequency resource sets.
As an embodiment, all Random Access Occasions (Random Access time instants) associated with one SSB (Synchronization Signal Block) constitute the first time-frequency resource pool, and the second signaling indicates a first one of the K time-frequency resource sets, and there is a determined offset in a frequency domain between the other time-frequency resource sets of the K time-frequency resource sets and the first time-frequency resource set.
As an embodiment, all Random Access Occasions (Random Access time instants) associated with one SSB (Synchronization Signal Block) constitute the first time-frequency resource pool, and the second signaling indicates a first one of the K time-frequency resource sets, and there is a determined offset in time domain between the other time-frequency resource sets of the K time-frequency resource sets and the first time-frequency resource set.
As an embodiment, all Random Access Occasions (Random Access time instants) associated with one SSB (Synchronization Signal Block) constitute the first time-frequency resource pool, and the second signaling indicates a first one of the K time-frequency resource sets, and other time-frequency resource sets of the K time-frequency resource sets have a certain offset in time domain and frequency domain from the first one of the time-frequency resource sets.
As an embodiment, the PRACH Configuration Index indicated by the first signaling includes whether resource units corresponding to the indicated Random Access allocations can be selected into the K time-frequency resource sets, and consecutive K resource units of the Random Access allocations corresponding to the resource units that can be selected into the K time-frequency resource sets are indicated as the K time-frequency resource sets by the second signaling.
As an embodiment, the second node N02 sends in step S5202 third signaling, which is used to restrict sending random access signals on resource elements of one or more of the K sets of time frequency resources.
As an embodiment, the first node U01 receives the third signaling in step S5102.
As an embodiment, the third signaling comprises barring.
As an embodiment, the third signaling indicates a probability of random access.
As an embodiment, the third signaling is beam based.
As an embodiment, the third signaling is of time-frequency resources associated with one SSB used for random access.
As an embodiment, the third signaling is cell based.
As an embodiment, the third signaling is for the first time-frequency resource pool.
As an embodiment, the third signaling is for all of the K sets of time frequency resources.
As an embodiment, the third signaling is of a part of the K sets of time-frequency resources.
As an embodiment, the third signaling includes access restriction information for each of the K sets of time-frequency resources.
As an embodiment, the third signaling includes access restriction information for each of the K sets of time-frequency resources.
As an embodiment, the third signaling is used to restrict the use of resource units in the K time-frequency resource sets by nodes that only send one preamble sequence signal in one random access.
As an embodiment, the third signaling is used to restrict the first node U01 from transmitting random access signals using time-frequency resources other than the K sets of time-frequency resources.
As an embodiment, the third signaling is used to restrict nodes other than the first node U01 from using resource units in the K time-frequency resource sets.
As an embodiment, the third signaling is used to restrict a node using M preamble sequence signals in one access procedure to use resource elements in the K time-frequency resource sets, where M is a positive integer smaller than K.
As an embodiment, when a node other than the first node U01 receives a restriction on using resource units in the K time-frequency resource sets, the node other than the first node U01 selects resource units other than resource units in the K time-frequency resource sets to transmit a random access signal.
As an embodiment, the first node U01 determines K and K sets of time-frequency resources in step S5103.
As an embodiment, the K and the K sets of time-frequency resources are related to the first parameter.
As an embodiment, the first parameter is a distance between the first node U01 and a receiver of the target signal group.
As an example, when the distance between the first node U01 and the receiver of the target signal group increases, the value of K also increases.
As an embodiment, the value of K does not decrease when the distance between the first node U01 and the receiver of the target signal group increases.
As an embodiment, when the distance between the first node U01 and the receiver of the target signal group increases, the resource units in the first pool of time-frequency resources that support the generation of the target signal using long sequences are determined to be the resource units in the K sets of time-frequency resources.
As an embodiment, when the distance between the first node U01 and the receiver of the target signal group increases and the first node U01 has positioning capability, the resource units in the first pool of time-frequency resources that support the generation of the target signal using short sequences are determined as the resource units in the K sets of time-frequency resources.
As an embodiment, the total number of resource units comprised within the K sets of time-frequency resources does not decrease when the distance between the first node U01 and the receivers of the target signal group increases.
As an embodiment, when the distance between the first node U01 and the receivers of the target signal group increases, the total number of resource units included in the K time-frequency resource sets also increases.
As an embodiment, the first parameter is RSRP (Reference Signal Receiving Power) of a Signal sent by a receiver of the target Signal group received by the first node U01.
As an embodiment, when the RSRP decreases, the value of K increases.
As an embodiment, when the RSRP decreases, the value of K does not decrease.
As an embodiment, when the RSRP is decreased, the resource elements in the first pool of time-frequency resources that support generating the target signal using long sequences are determined to be resource elements in the K sets of time-frequency resources.
As an embodiment, when the RSRP is lower than a first threshold and the first node U01 has positioning capability, a resource unit in the first time-frequency resource pool that supports generation of the target signal using a short sequence is determined as a resource unit in the K time-frequency resource sets.
As one example, the short sequence comprises a length 139 sequence.
As an embodiment, when the RSRP is lower than a first threshold and the first node U01 has positioning capability, a resource element in the first time-frequency resource pool that supports generation of the target signal using a long sequence is determined as a resource element in the K time-frequency resource sets.
As one example, the long sequence comprises a sequence of length 839.
As an embodiment, the first threshold comprises-90 dB.
For one embodiment, the first threshold comprises-110 dB.
As an embodiment, when the RSRP decreases, the total number of resource elements included in the K time-frequency resource sets does not decrease.
As an embodiment, when the RSRP decreases, the total number of resource elements included in the K time-frequency resource sets also increases.
As an embodiment, when the RSRP is decreased, resource elements in the first pool of time-frequency resources that support using more sequence repetitions are determined to be resource elements in the K sets of time-frequency resources.
As an embodiment, the first parameter is RSRQ (Reference Signal Receiving Quality) of a Signal transmitted by a receiver of the target Signal group received by the first node U01.
As an embodiment, when the RSRQ decreases, the value of K increases.
As an embodiment, when the RSRQ decreases, the value of K does not decrease.
As an embodiment, when the RSRQ decreases, the resource elements of the first pool of time-frequency resources that support generating the target signal using long sequences are determined to be resource elements of the K sets of time-frequency resources.
As an embodiment, when the RSRQ is lower than a second threshold and the first node U01 has positioning capability, a resource element in the first time-frequency resource pool that supports generating the target signal using a short sequence is determined as a resource element in the K time-frequency resource sets.
As an embodiment, when the RSRQ is lower than a second threshold and the first node U01 has no positioning capability, resource elements in the first time-frequency resource pool that support generating the target signal using a long sequence are determined to be resource elements in the K time-frequency resource sets.
As an example, the long sequence comprises a length 839 sequence and the short sequence comprises a length 139 sequence.
As one embodiment, the second threshold comprises-12 dB.
As one embodiment, the second threshold comprises-13 dB.
As one embodiment, the second threshold comprises-15 dB.
As an embodiment, when the RSRQ decreases, the total number of resource elements included within the K time-frequency resource sets does not decrease.
As an embodiment, when the RSRQ decreases, the total number of resource elements included in the K time-frequency resource sets also increases.
As an embodiment, when the RSRQ decreases, resource elements in the first time-frequency resource pool that support the use of more sequence repetitions are determined to be resource elements in the K time-frequency resource sets.
As an embodiment, the first parameter is whether the first node U01 has positioning capability.
As an embodiment, when the RSRQ of the home cell of the first node U01 measured by the first node U01 is lower than a second threshold and the first node U01 has positioning capability, the resource unit in the first time-frequency resource pool that supports generation of the target signal using a short sequence is determined as a resource unit in the K time-frequency resource sets.
As an embodiment, when the RSRQ of the home cell of the first node U01 measured by the first node U01 is lower than a second threshold and the first node U01 has no positioning capability, the resource unit in the first time-frequency resource pool that supports generation of the target signal using a long sequence is determined as a resource unit in the K time-frequency resource sets.
As an embodiment, the first parameter is a type of the first node U01; when the first node U01 is a machine communication device (MTC) or an Internet of things (IoT) device, the total number of resource units in the K time-frequency resource sets is higher than when the first node U01 is other terminal types.
As an embodiment, the first parameter is a type of the first node U01; when the first node U01 is a low-power terminal, the total number of resource units in the K time-frequency resource sets is greater than the total number of resource units in the K time-frequency resource sets determined when the first node U01 is a terminal of another type.
As an embodiment, the first parameter is a distance of the first node U01 from an edge of the selected cell, and when the distance of the first node U01 from the edge of the selected cell is lower than a third threshold, the determined total number of resource units in the K time-frequency resource sets is greater than the determined total number of resource units in the K time-frequency resource sets when the distance of the first node U01 from the edge of the selected cell is higher than the third threshold.
As an embodiment, the unit of the third threshold is kilometers, and a value is a positive number.
As an embodiment, the third threshold unit is meter, and takes a positive value.
As an embodiment, the first parameter is a distance between the first node U01 and an edge of the selected cell, and when the distance between the first node U01 and the edge of the selected cell is lower than a fourth threshold, the determined value of K is greater than the determined value of K when the distance between the first node U01 and the edge of the selected cell is higher than the fourth threshold.
As an embodiment, the fourth threshold unit is kilometers, and takes a positive value.
As an embodiment, the fourth threshold unit is meter, and takes a positive number.
As an embodiment, the first parameter is a time remaining for performing next cell reselection or handover, where when the remaining time is lower than a fifth threshold, the value of K is greater than the value of K when the remaining time is higher than the fifth threshold.
As an embodiment, the fifth threshold unit is seconds and takes a positive value.
As an embodiment, the fifth threshold unit is a frame number, and the value is a positive number.
As an embodiment, the first parameter is an estimated time remaining for next cell reselection or handover by the first node U01, and when the remaining time is lower than a sixth threshold, the determined total number of resource units in the K time-frequency resource sets is greater than the determined total number of resource units in the K time-frequency resource sets when the remaining time is greater than the sixth threshold.
As an embodiment, the first node U01 listens for feedback signals for the K target signals;
as an embodiment, the feedback signal heard by the first node U01 and related to the first node U01 that is used for random access response is considered as a feedback signal for the same random access request;
as an embodiment, the feedback signals heard by the first node U01 and used for random access response are considered as feedback signals for K target signals.
As an embodiment, the first node U01 sends the target signal group in step S5104.
As an embodiment, the target signal group occupies resource units included in the K time-frequency resource sets.
As an embodiment, the target signal group occupies all resource units included in the K time-frequency resource sets.
As an embodiment, the second node N02 receives the target signal group in step S5203.
As an embodiment, when the K target signals are the same pairwise, the second node N02 performs symbol-level combination on the K target signals.
As an embodiment, when the K target signals are the same in pairs, the second node N02 performs rf level combining on the K target signals.
As an embodiment, when the K target signals are generated by the same sequence, the second node N02 combines the K target signals at baseband.
As an embodiment, the second node N02 connects the received sampling data of at least two of the K target signals and then performs signal detection.
As an embodiment, when two target signals of the K target signals are different, the second node N02 performs signal detection after connecting the received data of the two target signals.
As an example, the second node N02 performs detection by calculating the correlation of the received signal with a known sequence.
As an embodiment, the second node N02 sends fourth signaling in step S5204, and the fourth signaling is used for feeding back the target signal group.
As an embodiment, the first node U01 receives the fourth signaling in step S5105.
Example 6
Embodiment 6 illustrates a wireless signal transmission flow chart according to an embodiment of the present application, as shown in fig. 6. In fig. 6, the second node N03 is the serving cell base station of the first node U02, and it is specifically illustrated that the sequence in this example does not limit the signal transmission sequence and the implemented sequence in this application.
For theSecond node N03In step S6201, the first signaling and the second signaling are sent.
For theFirst node U02In step S6101, the first signaling and the second signaling are received, in step S6103, the value of K and K time-frequency resource sets are determined, and in step S6104, the target signal group is sent.
In embodiment 6, the first signaling in this application is used to indicate a first time-frequency resource pool, where the first time-frequency resource pool includes K time-frequency resource sets, and resource units occupied by any two time-frequency resource sets in the K time-frequency resource sets are orthogonal; the target signal group comprises K target signals, and at least two target signals of the K target signals are different; the second signaling is used for indicating that the K target signals respectively correspond to the K frequency resource sets one by one, and the target signal group is used for the same random access; k is a positive integer greater than 1, and the value of K is related to a first parameter; determining, in the first pool of time-frequency resources, that the K sets of time-frequency resources are related to the first parameter.
As an embodiment, the second node N03 sends a third signaling in step S6202.
For theThird node U03The third signaling is received in step S6301.
As an embodiment, the third node is a UE.
As an embodiment, an interface of the first node U02 to communicate with the second node N03 is a Uu interface.
As an embodiment, an interface of the third node U03 to communicate with the second node N03 is a Uu interface.
As an embodiment, the interface of the third node U03 for communicating with the second node N03 is a PC5 interface.
As an embodiment, the third signaling is used to restrict the third node U03 from transmitting random access signals on resource elements in the K time-frequency resource sets.
As an embodiment, the third node U03 transmits a third signal in step S6302, wherein the third signal is used for random access.
As an embodiment, the second node receives the target signal group and the third signal in step S6203.
As an embodiment, the resource units occupied by the third signal are not identical to the resource units in the K time-frequency resource sets.
As an embodiment, at least two resource units exist in the resource units occupied by the third signal, wherein one of the resource units belongs to the K time-frequency resource sets, and the other resource unit does not belong to the K time-frequency resource sets.
As an embodiment, the resource unit occupied by the third signal only belongs to one of the K time-frequency resource sets.
As an embodiment, a set formed by resource units occupied by the third signal is equal to one of the K time-frequency resource sets.
As an embodiment, the set of resource elements reserved for the third signal is equal to one of the K sets of time frequency resources.
As an embodiment, the third signal includes only one preamble sequence signal, and the set of resource units reserved for the third signal is equal to one of the K time frequency resource sets.
As an embodiment, the second node N03 sends fourth signaling in step S6204, and the fourth signaling is used for feeding back the target signal group.
As an embodiment, the first node U02 receives the fourth signaling in step S6105.
Example 7
Embodiment 7 illustrates a schematic diagram of a target signal according to an embodiment of the present application, as shown in fig. 7.
As an embodiment, the target signal includes a CP, a first sequence and a GP.
As an embodiment, the lengths of the CP and GP are indicated by the first signaling.
As an embodiment, the target signal comprises a CP, a signal generated from the first sequence and a GP.
As one embodiment, the first sequence comprises an m-sequence.
As one example, the first sequence comprises a gold sequence.
In one embodiment, the first sequence comprises a Zadoff-Chu sequence.
In one embodiment, the first sequence comprises a Zadoff-Chu sequence and an m-sequence.
As an example, the first sequence comprises a Zadoff-Chu sequence and an m-sequence and a gold sequence.
As one example, the first sequence includes a gold sequence and an m-sequence.
As an embodiment, the first sequence comprises a plurality of subsequences, which comprise m sequences.
As one example, the first sequence comprises a plurality of subsequences that comprise gold sequences.
In one embodiment, the first sequence comprises a plurality of subsequences, which comprise Zadoff-Chu sequences.
As an example, the length of the first sequence includes 839.
As one embodiment, the length of the first sequence includes 139.
Example 8
Embodiment 8 illustrates a schematic diagram of a target signal according to an embodiment of the present application, as shown in fig. 8.
As an embodiment, the target signal includes a CP, a plurality of second sequences and a GP.
As an embodiment, the lengths of the CP and GP are indicated by the first signaling.
As an embodiment, the target signal includes a CP, a signal generated from the plurality of second sequences, and a GP.
As one embodiment, the second sequence comprises an m-sequence.
As one example, the second sequence comprises a gold sequence.
In one embodiment, the second sequence comprises a Zadoff-Chu sequence.
In one embodiment, the second sequence comprises a Zadoff-Chu sequence and an m-sequence.
As an example, the second sequence comprises a Zadoff-Chu sequence and an m-sequence and a gold sequence.
As one example, the second sequence includes a gold sequence and an m-sequence.
As an example, the length of the second sequence comprises 839.
As an example, the length of the second sequence includes 139.
Example 9
Embodiment 9 illustrates a schematic diagram of a first time-frequency resource pool according to an embodiment of the present application, as shown in fig. 9. In embodiment 9, the first pool of time-frequency resources comprises a first set of time-frequency resources, the first set of time-frequency resources being one of the K sets of time-frequency resources.
In one embodiment, the target signal group occupies resource units in the first set of time-frequency resources.
As an embodiment, the first time-frequency resource pool is configured by a serving cell of the first node.
For one embodiment, the first set of time-frequency resources is associated with the target set of signals.
As an embodiment, the K time-frequency resource sets belong to the first time-frequency resource pool.
As an embodiment, each of the K sets of time-frequency resources comprises at least one resource unit.
As an embodiment, the target signal group occupies resource units in the K time-frequency resource sets.
Example 10
Embodiment 10 illustrates a schematic diagram of a second set of time-frequency resources according to an embodiment of the present application, as shown in fig. 10. In embodiment 10, the second set of time frequency resources is one of the K sets of time frequency resources, and the second set of time frequency resources includes at least one time frequency unit.
As an embodiment, the second signal occupies resource elements in the second set of time-frequency resources.
As an embodiment, the second signal occupies all resource elements in the second set of time-frequency resources.
As an embodiment, the second signal occupies only resource elements in the second set of time-frequency resources.
As an embodiment, resource elements in the second set of time-frequency resources are used to carry the target signal in the set of target signals.
In one embodiment, the resource elements in the second set of time-frequency resources are used to carry random access signals transmitted by nodes other than the first node.
As an embodiment, the resource units in the second set of time-frequency resources are used to carry both the random access signal sent by a node other than the first node and the target signal in the target signal group.
As an embodiment, the resource unit is an RE.
Example 11
Embodiment 11 illustrates a schematic diagram of a third time-frequency resource set according to an embodiment of the present application, as shown in fig. 11. In embodiment 11, the third set of time frequency resources is one of the K sets of time frequency resources, and the third set of time frequency resources includes at least one time frequency unit.
As an embodiment, the third signal occupies resource elements in the third set of time-frequency resources.
As an embodiment, the third signal occupies all resource elements in the third set of time-frequency resources.
As an embodiment, the third signal occupies only resource elements in the third set of time-frequency resources.
As an embodiment, resource units in the third set of time-frequency resources are used to carry the target signal in the set of target signals.
As an embodiment, the resource elements in the third set of time-frequency resources are used to carry random access signals transmitted by nodes other than the first node.
In one embodiment, the resource units in the third set of time-frequency resources are used to carry both the random access signal transmitted by a node other than the first node and the target signal in the target signal group.
As an embodiment, resource units in the third set of time-frequency resources are reserved for sending random access signals by nodes other than the first node and sending the target signals in the target signal group by the first node at the same time.
As an embodiment, resource units in the third time-frequency resource set are simultaneously reserved for nodes other than the first node to send a random access signal and for the first node to send the target signal in the target signal group, and the random access signal sent by the nodes other than the first node only occupies the resource units in the third time-frequency resource set.
Example 12
Embodiment 12 illustrates a schematic diagram of determining K time-frequency resource sets and a first counter in a first time-frequency resource pool according to an embodiment of the present application, as shown in fig. 12.
As an embodiment, the first time-frequency resource pool includes all time-frequency resources used for random access in one cell.
As an embodiment, the first pool of time-frequency resources comprises all time-frequency resources for random access on one beam.
As an embodiment, the first time-frequency resource pool includes all random access resources associated with one SSB (Synchronization Signal Block).
As an embodiment, all sets of time-frequency resources comprised in the first set of time-frequency resources are orthogonal in time domain.
In one embodiment, the first time-frequency resource pool includes the K time-frequency resource sets.
As an embodiment, the first COUNTER includes PREAMBLE _ transition _ COUNTER, the first COUNTER records the number of times PREAMBLE is sent by the first node, and when the first COUNTER exceeds a certain threshold, the value of K is increased; as a sub-embodiment, the specific threshold is equal to 1.
As an embodiment, the first counter records the number of times of initiating a random access attempt at maximum power, when the value of the first counter is greater than 1, the value of K is greater than 1, and when the value of the first counter increases, the value of K is not decreased; as a sub-embodiment, any K time-frequency resource sets in the first time-frequency resource pool are determined as the K time-frequency resource sets; as a sub-embodiment, K time-frequency resource sets with the same frequency in the first time-frequency resource pool are determined as the K time-frequency resource sets.
As an embodiment, the first counter records the number of times of failure to initiate an access attempt, and when the value of the first counter is greater than 1 and the value of the first counter increases, the value of K also increases.
As an embodiment, the first counter records a number of times of initiating a contention-based random access (CBRA), and when a value of the first counter is greater than a certain threshold, a value of K is linearly related to a value of the first counter.
As an embodiment, the first counter records a number of times Contention Free Random Access (CFRA) is initiated, and when the first counter is greater than 1, a time frequency resource set supporting generation of the target signal using a long sequence in the first time frequency resource pool is determined as the K time frequency resource sets.
As an embodiment, the first counter records the number of times of random access triggered by a specific event, the specific time includes a beam failure, the specific time includes a handover, the specific time includes a paging response, the specific event is related to an offset, and the sum of the offsets and the value of the first counter is linearly related to the value of K.
Example 13
Embodiment 13 illustrates a schematic diagram that third signaling is used to limit the transmission of random access signals on resource units in one or more time-frequency resource sets of K time-frequency resource sets according to an embodiment of the present application, as shown in fig. 13.
As an embodiment, the first node receives the third signaling in step.
As an embodiment, the third signaling comprises a Backoff probability.
As an embodiment, the third signaling indicates a probability of random access.
As an embodiment, the third signaling is for a beam.
As an embodiment, the third signaling is of time-frequency resources associated with one SSB used for random access.
As an embodiment, the third signaling is for a cell.
As an embodiment, the third signaling is for the first time-frequency resource pool.
As an embodiment, the third signaling is of all of the K sets of time frequency resources.
As an embodiment, the third signaling is of a part of the K sets of time-frequency resources.
As an embodiment, the third signaling includes random access restriction information for each of the K sets of time-frequency resources.
As an embodiment, the third signaling includes random access restriction information for each of the K sets of time-frequency resources.
As an embodiment, the third signaling is used to restrict the use of resource elements in the K time-frequency resource sets by nodes that only send one preamble sequence signal in one random access.
As an embodiment, said third signalling is used to restrict said first node from transmitting random access signals using time-frequency resources other than said K sets of time-frequency resources.
As an embodiment, the third signaling is used to restrict the use of resource elements in the K time-frequency resource sets by nodes other than the first node.
As an embodiment, the third signaling is used to restrict a node using M preamble sequence signals in one random access procedure to use resource units in the K time-frequency resource sets, where M is a positive integer smaller than K.
As an embodiment, the third signaling is used to restrict one node to use resource units in the K time-frequency resource sets when a distance between the node and the selected cell is greater than a threshold.
As an embodiment, the third signaling is used to restrict one node from using resource elements in the K time-frequency resource sets when a distance between the node and a receiver of a random access signal transmitted by the one node is greater than a threshold.
As an embodiment, when a node other than the first node receives a restriction on using resource units in the K time-frequency resource sets, the node other than the first node selects resource units other than resource units in the K time-frequency resource sets to transmit a random access signal.
Example 14
Embodiment 14 illustrates a block diagram of a processing apparatus for use in a first node according to an embodiment of the present application; as shown in fig. 14. In fig. 14, the processing means 1400 in the first node comprises a first receiver 1401, a first transmitter 1402. In the case of the embodiment 14, the following,
a first receiver 1401 for receiving the first signaling and the second signaling;
a first transmitter 1402 that transmits the target signal group;
the first signaling is used for indicating a first time-frequency resource pool, the first time-frequency resource pool comprises K time-frequency resource sets, and resource units occupied by any two time-frequency resource sets in the K time-frequency resource sets are orthogonal; the target signal group comprises K target signals, and at least two target signals of the K target signals are different; the second signaling is used for indicating that the K target signals respectively correspond to the K frequency resource sets one by one, and the target signal group is used for the same random access; k is a positive integer greater than 1, and the value of K is related to a first parameter; determining, in the first pool of time-frequency resources, that the K sets of time-frequency resources are related to the first parameter.
As an embodiment, each of the K target signals starts with cyclic redundancy and ends with a guard time slot.
As an embodiment, the time domain resources occupied by any two of the K time frequency resource sets are orthogonal.
As an embodiment, it is determined in the first time-frequency resource pool that the K time-frequency resource sets are related to a first counter; the first counter is related to a number of random access attempts initiated by the first node before transmitting the set of target signals.
As an embodiment, the second time-frequency resource set is one of the K time-frequency resource sets, the signal used for carrying the resource unit included in the second time-frequency resource set includes a second signal, the second signal is a random access signal sent by a node other than the first node, and at least one resource unit existing in the resource unit occupied by the preamble sequence signal adopted by the second signal is the resource unit other than the resource unit occupied by the K time-frequency resource sets.
As an embodiment, the third set of time frequency resources is one of the K sets of time frequency resources, and the signals carried by the resource units included in the third set of time frequency resources include a third signal; the third signal is a signal used for random access and sent by a node except the first node, a sender of the third signal only sends a leader sequence signal in the random access process to which the third signal belongs, and a resource unit set formed by all resource units occupied by the third signal is equal to the third time-frequency resource set.
As an embodiment, any one of the K time-frequency resource sets is used to independently carry a preamble sequence signal sent by a node other than the first node.
As an embodiment, the first receiver receives third signaling, which is used to restrict the transmission of random access signals on resource elements of one or more of the K sets of time-frequency resources.
As an embodiment, the first receiver receives a fourth signaling, which is used for feeding back the target signal group.
As an embodiment, the first node is a User Equipment (UE).
As an embodiment, the first node is a user equipment supporting a large delay difference.
As an embodiment, the first node is a user equipment supporting NTN.
As an embodiment, the first node is an aircraft.
As an embodiment, the first node is a vehicle-mounted terminal.
As an embodiment, the first node is a relay.
As an embodiment, the first node is a ship.
As an embodiment, the first node is a user equipment of an industrial internet of things.
As an embodiment, the first node is a device supporting low-latency high-reliability transmission.
For one embodiment, the first receiver 1401 includes at least one of the antenna 452, the receiver 454, the receive processor 456, the multiple antenna receive processor 458, the controller/processor 459, the memory 460, or the data source 467 of embodiment 4.
For one embodiment, the first transmitter 1402 includes at least one of the antenna 452, the transmitter 454, the transmit processor 468, the multi-antenna transmit processor 457, the controller/processor 459, the memory 460, or the data source 467 of embodiment 4.
Example 15
Embodiment 15 illustrates a block diagram of a processing apparatus for use in a second node according to an embodiment of the present application; as shown in fig. 15. In fig. 15, the processing means 1500 in the second node comprises a second transmitter 1501 and a second receiver 1502. In the case of the embodiment 15, the following examples are given,
a second transmitter 1401 which transmits the first signaling and the second signaling;
a second receiver 1402 for receiving the target signal group;
the first signaling is used for indicating a first time-frequency resource pool, the first time-frequency resource pool comprises K time-frequency resource sets, and resource units occupied by any two time-frequency resource sets in the K time-frequency resource sets are orthogonal; the target signal group comprises K target signals, and at least two target signals of the K target signals are different; the second signaling is used for indicating that the K target signals respectively correspond to the K frequency resource sets one by one, and the target signal group is used for the same random access; k is a positive integer greater than 1, and the value of K is related to a first parameter; determining, in the first pool of time-frequency resources, that the K sets of time-frequency resources are related to the first parameter.
As an embodiment, each of the K target signals starts with cyclic redundancy and ends with a guard time slot.
As an embodiment, the time domain resources occupied by any two time frequency resource sets in the K time frequency resource sets are orthogonal.
As an embodiment, it is determined in the first time-frequency resource pool that the K time-frequency resource sets are related to a first counter; the first counter is related to a number of random access attempts initiated by a sender of the target signal group prior to sending the target signal group.
As an embodiment, the second time-frequency resource set is one of the K time-frequency resource sets, the signal used for carrying the resource unit included in the second time-frequency resource set includes a second signal, the second signal is a random access signal sent by a node other than the sender of the target signal group, and at least one resource unit existing in the resource unit occupied by the preamble sequence signal adopted by the second signal is the resource unit other than the resource unit occupied by the K time-frequency resource sets.
As an embodiment, a third set of time frequency resources is one of the K sets of time frequency resources, and signals carried by resource units included in the third set of time frequency resources include a third signal; the third signal is a signal used for random access and sent by a node except the sender of the target signal group, the sender of the third signal only sends a preamble sequence signal in the random access process to which the third signal belongs, and a resource unit set formed by all resource units occupied by the third signal is equal to the third time-frequency resource set.
As an embodiment, any one of the K time-frequency resource sets is used independently to carry a preamble sequence signal sent by a node other than the sender of the target signal group.
As an embodiment, the first transmitter transmits third signaling, which is used to restrict transmission of random access signals on resource elements of one or more of the K time-frequency resource sets.
As an embodiment, the first transmitter transmits a fourth signaling, which is used for feeding back the target signal group.
As an embodiment, the second node is a base station.
As one embodiment, the second node is a satellite.
As an embodiment, the second node is a user equipment.
For one embodiment, the second node is a gateway.
As an embodiment, the second node is a base station supporting a large delay difference.
For one embodiment, the second transmitter 1501 includes at least one of the antenna 420, the transmitter 418, the transmit processor 416, the multi-antenna transmit processor 471, the controller/processor 475, and the memory 476 of embodiment 4.
For one embodiment, the second receiver 1502 includes at least one of the antenna 420, the receiver 418, the receive processor 470, the multiple antenna receive processor 472, the controller/processor 475, and the memory 476 of embodiment 4.
It will be understood by those skilled in the art that all or part of the steps of the above methods may be implemented by instructing relevant hardware through a program, and the program may be stored in a computer readable storage medium, such as a read-only memory, a hard disk or an optical disk. Alternatively, all or part of the steps of the above embodiments may be implemented by using one or more integrated circuits. Accordingly, the module units in the above embodiments may be implemented in a hardware form, or may be implemented in a form of software functional modules, and the present application is not limited to any specific form of combination of software and hardware. User equipment, terminal and UE in this application include but not limited to unmanned aerial vehicle, communication module on the unmanned aerial vehicle, remote control aircraft, the aircraft, small aircraft, the cell-phone, the panel computer, the notebook, vehicle Communication equipment, wireless sensor, network card, thing networking terminal, the RFID terminal, NB-IoT terminal, MTC (Machine Type Communication) terminal, eMTC (enhanced MTC) terminal, the data card, network card, vehicle Communication equipment, low-cost cell-phone, low-cost panel computer, satellite Communication equipment, ship Communication equipment, wireless Communication equipment such as NTN user equipment. The base station or the system device in the present application includes, but is not limited to, a macro cell base station, a micro cell base station, a home base station, a relay base station, a gNB (NR node B) NR node B, a TRP (Transmitter Receiver Point), an NTN base station, a satellite device, a flight platform device, and other wireless communication devices.
The above description is only a preferred embodiment of the present application, and is not intended to limit the scope of the present application. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (10)

1. A first node configured for wireless communication, comprising:
a first receiver which receives the first signaling and the second signaling;
a first transmitter for transmitting a target signal group;
the first receiver receives a fourth signaling, and the fourth signaling is used for feeding back the target signal group;
the first signaling is used for indicating a first time-frequency resource pool, the first time-frequency resource pool comprises K time-frequency resource sets, and resource units occupied by any two time-frequency resource sets in the K time-frequency resource sets are orthogonal; the target signal group comprises K target signals, and at least two target signals of the K target signals are different; the second signaling is used for indicating that the K target signals respectively correspond to the K time-frequency resource sets one by one, and the target signal group is used for the same random access; k is a positive integer greater than 1, and the value of K is related to a first parameter; determining, in the first pool of time-frequency resources, that the K sets of time-frequency resources are related to the first parameter; at least one time frequency resource set exists in the K time frequency resource sets, and random access signals sent by different nodes can be multiplexed on the at least one time frequency resource set in the K time frequency resource sets; target signals in the target signal group are transmitted on a PRACH (Physical Random access Channel).
2. The first node of claim 1, wherein each of the K target signals starts with cyclic redundancy and ends with a guard time slot.
3. The first node according to claim 1 or 2, wherein the time domain resources occupied by any two of the K time frequency resource sets are orthogonal.
4. The first node according to claim 2, wherein it is determined in the first pool of time-frequency resources that the K sets of time-frequency resources are related to a first counter; the first counter is related to a number of random access attempts initiated by the first node prior to transmitting the set of target signals.
5. The first node according to any of claims 1 to 4,
the value of K does not decrease, or also increases, as the distance between the first node to the receiver of the target signal group increases.
6. The first node according to any of claims 1 to 4,
the second signaling is used to indicate: all Random Access Occasions associated with one SSB (Synchronization Signal Block) constitute the first time-frequency resource pool, and K consecutive Random Access Occasions are determined as the K time-frequency resource sets.
7. The first node according to any of claims 1 to 6, comprising:
the first receiver receives third signaling, where the third signaling is used to restrict transmission of random access signals on resource units of one or more of the K sets of time-frequency resources.
8. A second node configured for wireless communication, comprising:
a second transmitter for transmitting the first signaling and the second signaling;
a second receiver receiving a target signal group;
the second transmitter, which transmits a fourth signaling, the fourth signaling being used for feeding back the target signal group;
the first signaling is used for indicating a first time-frequency resource pool, the first time-frequency resource pool comprises K time-frequency resource sets, and resource units occupied by any two time-frequency resource sets in the K time-frequency resource sets are orthogonal; the target signal group comprises K target signals, and at least two target signals of the K target signals are different; the second signaling is used for indicating that the K target signals respectively correspond to the K time-frequency resource sets one by one, and the target signal group is used for the same random access; k is a positive integer greater than 1, and the value of K is related to a first parameter; determining, in the first pool of time-frequency resources, that the K sets of time-frequency resources are related to the first parameter; at least one time frequency resource set exists in the K time frequency resource sets, and random access signals sent by different nodes can be multiplexed on the at least one time frequency resource set in the K time frequency resource sets.
9. A method in a first node used for wireless communication, comprising:
receiving a first signaling and a second signaling;
transmitting a target signal group;
receiving fourth signaling, the fourth signaling being used for feeding back the target signal group;
the first signaling is used for indicating a first time-frequency resource pool, the first time-frequency resource pool comprises K time-frequency resource sets, and resource units occupied by any two time-frequency resource sets in the K time-frequency resource sets are orthogonal; the target signal group comprises K target signals, and at least two target signals of the K target signals are different; the second signaling is used for indicating that the K target signals respectively correspond to the K time-frequency resource sets one by one, and the target signal group is used for the same random access; k is a positive integer greater than 1, and the value of K is related to a first parameter; determining, in the first pool of time-frequency resources, that the K sets of time-frequency resources are related to the first parameter; at least one time frequency resource set exists in the K time frequency resource sets, and random access signals sent by different nodes can be multiplexed on the at least one time frequency resource set in the K time frequency resource sets.
10. A method in a second node used for wireless communication, comprising:
sending a first signaling and a second signaling;
receiving a target signal group;
sending fourth signaling, wherein the fourth signaling is used for feeding back the target signal group;
the first signaling is used for indicating a first time-frequency resource pool, the first time-frequency resource pool comprises K time-frequency resource sets, and resource units occupied by any two time-frequency resource sets in the K time-frequency resource sets are orthogonal; the target signal group comprises K target signals, and at least two of the K target signals are different; the second signaling is used for indicating that the K target signals respectively correspond to the K time-frequency resource sets one by one, and the target signal group is used for the same random access; k is a positive integer greater than 1, and the value of K is related to a first parameter; determining, in the first pool of time-frequency resources, that the K sets of time-frequency resources are related to the first parameter; at least one time frequency resource set exists in the K time frequency resource sets, and random access signals sent by different nodes can be multiplexed on the at least one time frequency resource set in the K time frequency resource sets.
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