CN111465118A - Method and device for UE (user equipment) and base station for random access - Google Patents

Abstract

The invention discloses a method and device in a UE and a base station for random access. The UE first sends the first radio signal on the first air interface resource; receives the first signaling; then monitors the second signaling in the first time window; or gives up monitoring the second signaling in the first time window . The first signaling is physical layer signaling, and the second signaling is physical layer signaling. The first signaling is used to determine whether the second signaling is sent in the first time window. The first air interface resource is an air interface resource in the first uplink resource pool, and the first uplink resource pool includes a positive integer number of air interface resources. One of the air interface resources includes a time-frequency resource and a feature sequence. The identifier of the second signaling is associated with the identifier of the first air interface resource.

Description

A method and apparatus in a UE and a base station for random access

This application is a divisional application of the following original application:

--The filing date of the original application: 2016.09.27

--The application number of the original application: 201610856351.1

--The title of the invention-creation of the original application: a method and device in a UE and a base station for random access

technical field

The present invention relates to an RA (Random Access, random access) scheme in a wireless communication system, in particular to an RA scheme in a wireless communication system using a MIMO (Multiple Input Multiple Output, multiple input output) technology.

Background technique

Massive MIMO has become a research hotspot in next-generation mobile communications. In large-scale MIMO, multiple antennas are beamformed to form narrow beams pointing in a specific direction to improve communication quality. The beam formed by multi-antenna beamforming is generally relatively narrow, and both parties need to obtain part of the channel information of the other party to make the formed beam point in the correct direction. Before the UE (User Equipment, user equipment) performs RA, the base station cannot obtain the channel information of the UE, so how to make the RA process benefit from large-scale MIMO is a problem that needs to be studied.

The Contention Based RA Procedure in the traditional 3GPP (3rd Generation Partner Project) LTE (Long Term Evolution, Long Term Evolution) system includes four steps: the UE sends a random preamble sequence ( preamble); the base station sends RAR (Random Access Response, Random Access Response) to the UE; the UE sends Layer 2/Layer 3 (Layer 2/Layer 3) information to the base station; the base station sends contention resolution (contention resolution) information to the UE.

SUMMARY OF THE INVENTION

Through research, the inventor found that before the RA process, the UE can use some downlink common signals (such as synchronization signals, broadcast signals, reference signals, etc.) to obtain part of the channel information. In the first step of RA, by sending a random preamble sequence The channel information is notified to the base station, so in the second and fourth steps of RA, the base station can use multi-antenna beamforming to send RAR and contention resolution information to the UE based on the channel information of the UE, thereby improving the efficiency and quality of RA.

Since different UEs are likely to require different beamforming vectors, the signaling identifier of the DCI (Downlink Control Information) signaling corresponding to the RAR in the existing system cannot reflect the beamforming vector used by the UE. Therefore, the UE needs to monitor many The DCI corresponding to each beamforming vector may even need to receive the RAR corresponding to multiple beamforming vectors, although in fact the UE only needs to monitor and receive the DCI and RAR corresponding to the beamforming vector related to itself. This leads to an increase in UE processing complexity.

The present invention discloses a solution for the above problem. It should be noted that, in the case of no conflict, the embodiments in the UE of the present application and the features in the embodiments may be applied to the base station, and vice versa. Further, the embodiments of the present application and the features in the embodiments may be arbitrarily combined with each other under the condition of no conflict.

The present invention discloses a method in a UE for random access, which includes the following steps:

- Step A. Sending the first wireless signal on the first air interface resource;

- step B. receiving the first signaling;

- Step C. Monitor the second signaling in the first time window; or give up monitoring the second signaling in the first time window.

The first signaling is physical layer signaling, and the second signaling is physical layer signaling. The first signaling is used to determine whether the second signaling is sent in the first time window. The first air interface resource is an air interface resource in the first uplink resource pool, and the first uplink resource pool includes a positive integer number of air interface resources. One of the air interface resources includes a time-frequency resource and a feature sequence. The identifier of the second signaling is associated with the identifier of the first air interface resource.

As an embodiment, the UE selects the first air interface resource from the first uplink resource pool by itself.

As an embodiment, the characteristic sequence includes a pseudo-random sequence.

As an example, the characteristic sequence includes a Zadoff-Chu sequence.

As an embodiment, the characteristic sequence includes a CP (Cyclic Prefix, cyclic prefix).

As an embodiment, the physical layer channel corresponding to the air interface resource includes PRACH (Physical Random Access CHannel, physical random access channel).

As an embodiment, the identifier of the first air interface resource is used to generate the identifier of the second signaling. As a sub-embodiment, at least one of {the time domain resource occupied by the first air interface resource, the frequency domain resource occupied by the first air interface resource, and the characteristic sequence occupied by the first air interface resource} One is used to determine the identity of the second signaling. As a sub-embodiment, the identifier of the second signaling is used to determine {the RS (Reference Signal, reference signal) sequence of the DMRS (DeModulation Reference Signal, demodulation reference signal) of the second signaling, At least one of the CRC (Cyclic Redundancy Check, Cyclic Redundancy Check) of the second signaling, the scrambling sequence of the CRC of the second signaling, and the time-frequency resources occupied by the second signaling} one.

As an embodiment, the first wireless signal is generated by modulating the characteristic sequence corresponding to the first air interface resource.

As an embodiment, the identifier of the second signaling and the identifier of the first air interface resource are respectively non-negative integers.

As an embodiment, the first signaling is common to cells.

As an embodiment, the first signaling is DCI (Downlink Control Information, downlink control information).

As an embodiment, the first signaling is respectively sent M times in M time intervals, and the M is greater than 1. As a sub-embodiment, the first signaling is respectively sent by different antenna port groups in the M time intervals, and one of the antenna port groups includes a positive integer number of antenna ports. As a sub-embodiment, the M is configurable.

In the above embodiment, different antenna port groups may be pointed in different directions, which ensures that UEs in different positions can successfully receive the first signaling.

As an embodiment, the first time window includes a plurality of sub-time windows, and the UE monitors the second signaling in the plurality of sub-time windows, or gives up monitoring the first signaling in the plurality of sub-time windows Two signaling.

According to the above embodiment, in the case that the second signaling is not sent in the first time window, the UE may know through the first signaling that monitoring in the multiple sub-time windows can be abandoned The second signaling reduces the complexity of the UE

As an embodiment, the physical layer channel corresponding to the first signaling includes a downlink physical layer control channel (that is, a downlink channel that can only be used to carry physical layer control information). As a sub-embodiment, the first signaling is transmitted on PDCCH (Physical Downlink Control Channel, physical downlink control channel).

As an embodiment, the second signaling is DCI.

As an embodiment, the physical layer channel corresponding to the second signaling includes a downlink physical layer control channel (that is, a downlink channel that can only be used to carry physical layer control information). As a sub-embodiment, the second signaling is transmitted on the PDCCH.

As an embodiment, any two different air interface resources are mutually orthogonal. As a sub-embodiment, the time-frequency resources corresponding to any two different air interface resources are mutually orthogonal, or the time-frequency resources corresponding to any two different air interface resources are the same and mutually orthogonal Describe the feature sequence.

As an embodiment, the uplink resource pool includes multiple time units in the time domain. As a sub-embodiment, the time unit is the duration of one OFDM symbol. As a sub-embodiment, the plurality of time units are discontinuous in the time domain. As a sub-embodiment, the plurality of time units are consecutive in the time domain.

As an embodiment, the uplink resource pool includes multiple frequency units in the frequency domain. As a sub-embodiment, the frequency unit is a bandwidth occupied by a subcarrier. As a sub-embodiment, the plurality of frequency units are discontinuous in the frequency domain. As a sub-embodiment, the plurality of frequency units are continuous in the frequency domain.

As an embodiment, one air interface resource includes one time-frequency resource and one characteristic sequence of length Q, the time-frequency resource includes Q RUs (Resource Unit, resource unit), and Q is a positive integer . One modulation symbol is multiplied by the characteristic sequence and then mapped into the Q RUs, that is, the modulation symbol is transmitted on one of the air interface resources. As a sub-embodiment, the RU occupies the duration of one OFDM symbol in the time domain and occupies one subcarrier in the frequency domain.

As an embodiment, multiple different air interface resources may be mapped to one time-frequency resource through multiple different feature sequences.

Specifically, according to an aspect of the present invention, it is characterized in that, it further comprises the following steps:

- Step D. Receive the second wireless signal on the first time-frequency resource.

The second signaling is sent in the first time window, and the second signaling is used to determine the first time-frequency resource.

As an embodiment, the second wireless signal includes RAR (Random Access Response, random access response).

As an embodiment, the physical layer channel corresponding to the second wireless signal includes a downlink physical layer data channel (that is, a downlink channel that can be used to carry physical layer data). As a sub-embodiment, the second wireless signal is transmitted on PDSCH (Physical Downlink Shared Channel, physical downlink shared channel).

As an embodiment, the transmission channel corresponding to the second wireless signal is a DL-SCH (DownLink Shared Channel, downlink shared channel).

As an embodiment, the second signaling indicates {the first time-frequency resource, the MCS of the second wireless signal, the NDI of the second wireless signal, the RV of the second wireless signal, the At least one of the HARQ process numbers of the second wireless signal}.

Specifically, according to an aspect of the present invention, the step A further includes the following steps:

- Step A0. Receive downlink information.

The downlink information is used to determine at least one of {G antenna port groups, G uplink resource pools, and correspondence between the G antenna port groups and the G uplink resource pools}. The first uplink resource pool is one of the G uplink resource pools. The uplink resource pool includes a positive integer number of the air interface resources. The G is a positive integer.

As an embodiment, the first signaling is respectively sent M times in M time intervals, and the M and the G are irrelevant.

As an embodiment, the downlink information is common to cells.

As an embodiment, the downlink information is indicated by higher layer signaling.

As an embodiment, the downlink information is indicated by physical layer signaling.

As an embodiment, any two of the G uplink resource pools are orthogonal (ie, do not overlap) in the time domain.

As an embodiment, any two of the G uplink resource pools are orthogonal (ie, do not overlap) in the frequency domain.

As an embodiment, any two of the G uplink resource pools do not share an RU (Resource Unit, resource unit). The RU occupies one subcarrier in the frequency domain and occupies the duration of one wideband symbol in the time domain. As a sub-embodiment, the duration of the one wideband symbol is the reciprocal of the subcarrier corresponding to the corresponding RU. As a sub-embodiment, the wideband symbol is one of {OFDM symbol, SC-FDMA symbol, SCMA symbol}.

As an embodiment, any two of the G uplink resource pools include the same (multiple) of the characteristic sequences.

As an embodiment, any two of the G uplink resource pools occupy the same (multiple) RUs and the mutually orthogonal characteristic sequences.

Specifically, according to an aspect of the present invention, the step A further includes the following steps:

- Step A1. Receive downlink RS (Reference Signal, reference signal).

The downlink RS includes G RS ports, the G RS ports are respectively sent by the G antenna port groups, and the G antenna port groups correspond to the G uplink resource pools one-to-one. The first uplink resource pool is one of the G uplink resource pools, and the antenna port group corresponding to the first uplink resource pool is a first antenna port group.

As an embodiment, the downlink RS is used by the UE to determine the first antenna port group from the G antenna port groups.

As an embodiment, the reception quality of the RS port corresponding to the first antenna port group is higher than the reception quality of the RS port corresponding to a given antenna port group, wherein the given antenna port group is the G Any one of the antenna port groups is not equal to any one of the first antenna port groups.

As a sub-embodiment of the foregoing embodiment, the received quality includes one or two of {RSRP (Reference Signal Received Power, reference signal received power), RSRQ (Reference Signal Received Quality, reference signal received quality)}.

As an embodiment, the G RS ports are respectively sent at different time intervals.

As an embodiment, the antenna port group includes one antenna port.

As an embodiment, the number of antenna ports in the antenna port group is greater than 1.

As an example, any two different ones of the G antenna port groups cannot be assumed to be the same.

As a sub-embodiment of the foregoing embodiment, the antenna port is formed by stacking multiple antennas through antenna virtualization (Virtualization), and the mapping coefficients from the multiple antennas to the antenna port form a beamforming vector. The beamforming vectors corresponding to the first antenna port and the second antenna port cannot be assumed to be the same, wherein the first antenna port and the second antenna port respectively belong to any two of the G antenna port groups different groups of said antenna ports.

As a sub-embodiment of the above embodiment, the UE cannot perform joint channel estimation using the reference signals sent by any two of the G antenna port groups.

Specifically, according to an aspect of the present invention, the first signaling is transmitted on the first carrier, and at least one of {the second signaling, the first wireless signal} is transmitted on the second transmitted on the carrier. The first carrier and the second carrier are orthogonal in the frequency domain.

As an embodiment, the center frequency of the first carrier is lower than the center frequency of the second carrier. As a sub-embodiment, the center frequency of the first carrier is between 0.1 GHz and 3.5 GHz. As a sub-embodiment, the center frequency of the second carrier is greater than or equal to 6 GHz.

As an embodiment, the bandwidth of the second carrier is wider than the bandwidth of the first carrier.

As an embodiment, the downlink RS is transmitted on the second carrier.

As an embodiment, the downlink information is transmitted on the first carrier, and the downlink information is further used to indicate the second carrier.

As an embodiment, the downlink information is transmitted on the second carrier, and the downlink information is further used to indicate the first carrier.

As an embodiment, the first signature sequence is transmitted on the second carrier.

Specifically, according to an aspect of the present invention, the second signaling and the first wireless signal are respectively sent by the first antenna port group.

Specifically, according to an aspect of the present invention, the first signaling indicates G1 uplink resource pools. If the first uplink resource pool belongs to the G1 uplink resource pools, the UE monitors the second signaling in the first time window; otherwise, the UE abandons monitoring in the first time window the second signaling. wherein the G1 is a positive integer.

As an embodiment, the G1 uplink resource pools belong to the G uplink resource pools, and the G1 is less than or equal to the G.

As an embodiment, the first signaling is respectively sent M times in M time intervals, and the M is independent of the G1. As a sub-embodiment, the first signaling is respectively sent by different antenna port groups in the M time intervals, and one of the antenna port groups includes a positive integer number of antenna ports.

In the above embodiment, different antenna port groups may use different beamforming vectors to point to different directions, which ensures that UEs in different positions can successfully receive the first signaling.

As an embodiment, the first time window includes G1 sub-time windows, and the UE monitors the second signaling in the G1 sub-time windows, or gives up monitoring the first signaling in the G1 sub-time windows Two signaling.

As a sub-embodiment of the foregoing embodiment, the G1 sub-time windows correspond to the G1 uplink resource pools one-to-one. The first signaling is used to determine the correspondence between the G1 sub-time windows and the G1 uplink resource pools.

In the above sub-embodiment, the UE only needs to monitor the second signaling in the sub-time window corresponding to the first uplink resource pool, which further reduces the complexity of the UE.

The present invention discloses a method in a base station for random access, which includes the following steps:

- Step A. Receive the first radio signal on the first air interface resource;

- Step B. Sending the first signaling;

- Step C. Send the second signaling in the first time window; or give up sending the second signaling in the first time window.

The first signaling is physical layer signaling, and the second signaling is physical layer signaling. The first signaling is used to determine whether the second signaling is sent in the first time window. The first air interface resource is an air interface resource in the first uplink resource pool, and the first uplink resource pool includes a positive integer number of air interface resources. One of the air interface resources includes a time-frequency resource and a feature sequence. The identifier of the second signaling is associated with the identifier of the first air interface resource.

As an embodiment, the characteristic sequence includes a pseudo-random sequence.

As an example, the characteristic sequence includes a Zadoff-Chu sequence.

As an embodiment, the characteristic sequence includes a CP (Cyclic Prefix, cyclic prefix).

As an embodiment, the physical layer channel corresponding to the air interface resource includes PRACH (Physical Random Access CHannel, physical random access channel).

As an embodiment, the identifier of the first air interface resource is used to generate the identifier of the second signaling. As a sub-embodiment, at least one of {the time domain resource occupied by the first air interface resource, the frequency domain resource occupied by the first air interface resource, and the characteristic sequence occupied by the first air interface resource} One is used to determine the identity of the second signaling. As a sub-embodiment, the identifier of the second signaling is used to determine {the RS sequence of the DMRS of the second signaling, the CRC of the second signaling, the CRC of the second signaling scrambling sequence, at least one of the time-frequency resources occupied by the second signaling }.

As an embodiment, the first wireless signal is generated by modulating the characteristic sequence corresponding to the first air interface resource.

As an embodiment, the identifier of the second signaling and the identifier of the first air interface resource are respectively non-negative integers.

As an embodiment, the first signaling is common to cells.

As an embodiment, the first signaling is DCI (Downlink Control Information, downlink control information).

As an embodiment, the first signaling is respectively sent M times in M time intervals, and the M is greater than 1. As a sub-embodiment, the first signaling is respectively sent by different antenna port groups in the M time intervals, and one of the antenna port groups includes a positive integer number of antenna ports. As a sub-embodiment, the M is configurable.

In the above embodiment, different antenna port groups may be pointed in different directions, which ensures that UEs in different positions can successfully receive the first signaling.

As an embodiment, the first time window includes multiple sub-time windows, and the base station sends the second signaling in one of the multiple sub-time windows, or sends the second signaling in the multiple sub-time windows. The sending of the second signaling is abandoned in the time window.

According to the above-mentioned embodiment, in the case that the second signaling is not sent in the first time window, the base station may notify the UE to abstain from being in the multiple sub-time windows through the first signaling Monitoring the second signaling reduces the complexity of the UE.

As an embodiment, the physical layer channel corresponding to the first signaling includes a downlink physical layer control channel (that is, a downlink channel that can only be used to carry physical layer control information). As a sub-embodiment, the first signaling is transmitted on PDCCH (Physical Downlink Control Channel, physical downlink control channel).

As an embodiment, the second signaling is DCI.

As an embodiment, the physical layer channel corresponding to the second signaling includes a downlink physical layer control channel (that is, a downlink channel that can only be used to carry physical layer control information). As a sub-embodiment, the second signaling is transmitted on the PDCCH.

As an embodiment, any two different air interface resources are mutually orthogonal. As a sub-embodiment, the time-frequency resources corresponding to any two different air interface resources are mutually orthogonal, or the time-frequency resources corresponding to any two different air interface resources are the same and mutually orthogonal Describe the feature sequence.

As an embodiment, the uplink resource pool includes multiple time units in the time domain. As a sub-embodiment, the time unit is the duration of one OFDM symbol. As a sub-embodiment, the plurality of time units are discontinuous in the time domain. As a sub-embodiment, the plurality of time units are consecutive in the time domain.

As an embodiment, the uplink resource pool includes multiple frequency units in the frequency domain. As a sub-embodiment, the frequency unit is a bandwidth occupied by a subcarrier. As a sub-embodiment, the plurality of frequency units are discontinuous in the frequency domain. As a sub-embodiment, the plurality of frequency units are continuous in the frequency domain.

As an embodiment, one air interface resource includes one time-frequency resource and one characteristic sequence of length Q, the time-frequency resource includes Q RUs (Resource Unit, resource unit), and Q is a positive integer . One modulation symbol is multiplied by the characteristic sequence and then mapped into the Q RUs, that is, the modulation symbol is transmitted on one of the air interface resources. As a sub-embodiment, the RU occupies the duration of one OFDM symbol in the time domain and occupies one subcarrier in the frequency domain.

As an embodiment, multiple different air interface resources may be mapped to one time-frequency resource through multiple different feature sequences.

Specifically, according to an aspect of the present invention, it is characterized in that, it further comprises the following steps:

- Step D. Sending the second wireless signal on the first time-frequency resource.

The second signaling is sent in the first time window, and the second signaling is used to determine the first time-frequency resource.

As an embodiment, the second wireless signal includes RAR (Random Access Response, random access response).

As an embodiment, the physical layer channel corresponding to the second wireless signal includes a downlink physical layer data channel (that is, a downlink channel that can be used to carry physical layer data). As a sub-embodiment, the second wireless signal is transmitted on PDSCH (Physical Downlink Shared Channel, physical downlink shared channel).

As an embodiment, the transmission channel corresponding to the second wireless signal is a DL-SCH (DownLink Shared Channel, downlink shared channel).

As an embodiment, the second signaling indicates {the first time-frequency resource, the MCS of the second wireless signal, the NDI of the second wireless signal, the RV of the second wireless signal, the At least one of the HARQ process numbers of the second wireless signal}.

Specifically, according to an aspect of the present invention, the step A further includes the following steps:

- Step A0. Send downlink information.

The downlink information is used to determine at least one of {G antenna port groups, G uplink resource pools, and correspondence between the G antenna port groups and the G uplink resource pools}. The first uplink resource pool is one of the G uplink resource pools. The uplink resource pool includes a positive integer number of the air interface resources. The G is a positive integer.

As an embodiment, the first signaling is respectively sent M times in M time intervals, and the M and the G are irrelevant.

As an embodiment, the downlink information is common to cells.

As an embodiment, the downlink information is indicated by higher layer signaling.

As an embodiment, the downlink information is indicated by physical layer signaling.

As an embodiment, any two of the G uplink resource pools are orthogonal (ie, do not overlap) in the time domain.

As an embodiment, any two of the G uplink resource pools are orthogonal (ie, do not overlap) in the frequency domain.

As an embodiment, any two of the G uplink resource pools do not share an RU (Resource Unit, resource unit). The RU occupies one subcarrier in the frequency domain and occupies the duration of one wideband symbol in the time domain. As a sub-embodiment, the duration of the one wideband symbol is the reciprocal of the subcarrier corresponding to the corresponding RU. As a sub-embodiment, the wideband symbol is one of {OFDM symbol, SC-FDMA symbol, SCMA symbol}.

As an embodiment, any two of the G uplink resource pools include the same (multiple) of the characteristic sequences.

As an embodiment, any two of the G uplink resource pools occupy the same RU and the mutually orthogonal characteristic sequences.

Specifically, according to an aspect of the present invention, the step A further includes the following steps:

- Step A1. Send downlink RS (Reference Signal, reference signal).

The downlink RS includes G RS ports, the G RS ports are respectively sent by the G antenna port groups, and the G antenna port groups correspond to the G uplink resource pools one-to-one. The first uplink resource pool is one of the G uplink resource pools, and the antenna port group corresponding to the first uplink resource pool is a first antenna port group.

As an embodiment, the downlink RS is used by the UE to determine the first antenna port group from the G antenna port groups.

As an embodiment, the reception quality of the RS port corresponding to the first antenna port group is higher than the reception quality of the RS port corresponding to a given antenna port group, wherein the given antenna port group is the G Any one of the antenna port groups is not equal to any one of the first antenna port groups.

As a sub-embodiment of the foregoing embodiment, the received quality includes one or two of {RSRP (Reference Signal Received Power, reference signal received power), RSRQ (Reference Signal Received Quality, reference signal received quality)}.

As an embodiment, the antenna port group includes one antenna port.

As an embodiment, the number of antenna ports in the antenna port group is greater than 1.

As an example, any two different ones of the G antenna port groups cannot be assumed to be the same.

As a sub-embodiment of the foregoing embodiment, the antenna port is formed by stacking multiple antennas through antenna virtualization (Virtualization), and the mapping coefficients from the multiple antennas to the antenna port form a beamforming vector. The beamforming vectors corresponding to the first antenna port and the second antenna port cannot be assumed to be the same, wherein the first antenna port and the second antenna port respectively belong to any two of the G antenna port groups different groups of said antenna ports.

As a sub-embodiment of the above embodiment, the UE cannot perform joint channel estimation using the reference signals sent by any two of the G antenna port groups.

Specifically, according to an aspect of the present invention, the first signaling is transmitted on the first carrier, and at least one of {the second signaling, the first wireless signal} is transmitted on the second transmitted on the carrier. The first carrier and the second carrier are orthogonal in the frequency domain.

As an embodiment, the center frequency of the first carrier is lower than the center frequency of the second carrier. As a sub-embodiment, the center frequency of the first carrier is between 0.1 GHz and 3.5 GHz. As a sub-embodiment, the center frequency of the second carrier is greater than or equal to 6 GHz.

As an embodiment, the bandwidth of the second carrier is wider than the bandwidth of the first carrier.

As an embodiment, the downlink RS is transmitted on the second carrier.

As an embodiment, the downlink information is transmitted on the first carrier, and the downlink information is further used to indicate the second carrier.

As an embodiment, the downlink information is transmitted on the second carrier, and the downlink information is further used to indicate the first carrier.

As an embodiment, the first signature sequence is transmitted on the second carrier.

Specifically, according to an aspect of the present invention, the second signaling and the first wireless signal are respectively sent by the first antenna port group.

Specifically, according to an aspect of the present invention, the first signaling indicates G1 uplink resource pools. If the first uplink resource pool belongs to the G1 uplink resource pools, the base station sends the second signaling in the first time window; otherwise, the base station gives up sending in the first time window the second signaling. wherein the G1 is a positive integer.

As an embodiment, the G1 uplink resource pools belong to the G uplink resource pools, where the G1 is less than or equal to the G.

As an embodiment, the first signaling is respectively sent M times in M time intervals, and the M is independent of the G1. As a sub-embodiment, the first signaling is respectively sent by different antenna port groups in the M time intervals, and one of the antenna port groups includes a positive integer number of antenna ports.

In the above embodiment, different antenna port groups may use different beamforming vectors to point to different directions, which ensures that UEs in different positions can successfully receive the first signaling.

As an embodiment, the first time window includes G1 sub-time windows, and the base station sends the second signaling in one of the G1 sub-time windows, or sends the second signaling in the G1 sub-time windows. The sending of the second signaling is abandoned in the time window.

As a sub-embodiment of the foregoing embodiment, the G1 sub-time windows correspond to the G1 uplink resource pools one-to-one. The first signaling is used to determine the correspondence between the G1 sub-time windows and the G1 uplink resource pools.

The invention discloses a user equipment for random access, which includes the following modules:

The first processing module: used for sending the first wireless signal on the first air interface resource;

The first receiving module: used to receive the first signaling;

The second receiving module: used for monitoring the second signaling in the first time window; or giving up monitoring the second signaling in the first time window.

The first signaling is physical layer signaling, and the second signaling is physical layer signaling. The first signaling is used to determine whether the second signaling is sent in the first time window. The first air interface resource is an air interface resource in the first uplink resource pool, and the first uplink resource pool includes a positive integer number of air interface resources. One of the air interface resources includes a time-frequency resource and a feature sequence. The identifier of the second signaling is associated with the identifier of the first air interface resource.

As an embodiment, the UE selects the first air interface resource from the first uplink resource pool by itself.

As an embodiment, the characteristic sequence includes a pseudo-random sequence.

As an example, the characteristic sequence includes a Zadoff-Chu sequence.

As an embodiment, the characteristic sequence includes a CP (Cyclic Prefix, cyclic prefix).

As an embodiment, the physical layer channel corresponding to the air interface resource includes PRACH (Physical Random Access CHannel, physical random access channel).

As an embodiment, the identifier of the first air interface resource is used to generate the identifier of the second signaling. As a sub-embodiment, at least one of {the time domain resource occupied by the first air interface resource, the frequency domain resource occupied by the first air interface resource, and the characteristic sequence occupied by the first air interface resource} One is used to determine the identity of the second signaling. As a sub-embodiment, the identifier of the second signaling is used to determine {the RS sequence of the DMRS of the second signaling, the CRC of the second signaling, the CRC of the second signaling scrambling sequence, at least one of the time-frequency resources occupied by the second signaling }.

As an embodiment, the first signaling is common to cells.

As an embodiment, the first signaling is DCI (Downlink Control Information, downlink control information).

As an embodiment, the first signaling is respectively sent M times in M time intervals, and the M is greater than 1. As a sub-embodiment, the first signaling is respectively sent by different antenna port groups in the M time intervals, and one of the antenna port groups includes a positive integer number of antenna ports. As a sub-embodiment, the M is configurable.

As an embodiment, the first time window includes a plurality of sub-time windows, and the second receiving module monitors the second signaling in the plurality of sub-time windows, or abandons monitoring in the plurality of sub-time windows the second signaling.

As an embodiment, the second signaling is DCI.

As an embodiment, any two different air interface resources are mutually orthogonal. As a sub-embodiment, the time-frequency resources corresponding to any two different air interface resources are mutually orthogonal, or the time-frequency resources corresponding to any two different air interface resources are the same and mutually orthogonal Describe the feature sequence.

Specifically, in the above user equipment, the first processing module is further configured to receive downlink information.

The downlink information is used to determine at least one of {G antenna port groups, G uplink resource pools, and correspondence between the G antenna port groups and the G uplink resource pools}. The first uplink resource pool is one of the G uplink resource pools. The uplink resource pool includes a positive integer number of the air interface resources. The G is a positive integer.

As an embodiment, the first signaling is respectively sent M times in M time intervals, and the M and the G are irrelevant.

As an embodiment, the downlink information is common to cells.

Specifically, the above-mentioned user equipment is characterized in that the first processing module is further configured to receive a downlink RS (Reference Signal, reference signal).

The downlink RS includes G RS ports, the G RS ports are respectively sent by the G antenna port groups, and the G antenna port groups correspond to the G uplink resource pools one-to-one. The first uplink resource pool is one of the G uplink resource pools, and the antenna port group corresponding to the first uplink resource pool is a first antenna port group.

As an embodiment, the downlink RS is used by the UE to determine the first antenna port group from the G antenna port groups.

As an embodiment, the reception quality of the RS port corresponding to the first antenna port group is higher than the reception quality of the RS port corresponding to a given antenna port group, wherein the given antenna port group is the G Any one of the antenna port groups is not equal to any one of the first antenna port groups.

As an example, any two different ones of the G antenna port groups cannot be assumed to be the same.

Specifically, the above-mentioned user equipment is characterized in that the first signaling is transmitted on the first carrier, and at least one of {the second signaling, the first wireless signal} is transmitted on the second carrier . The first carrier and the second carrier are orthogonal in the frequency domain.

As an embodiment, the center frequency of the first carrier is lower than the center frequency of the second carrier. As a sub-embodiment, the center frequency of the first carrier is between 0.1 GHz and 3.5 GHz. As a sub-embodiment, the center frequency of the second carrier is greater than or equal to 6 GHz.

Specifically, the above-mentioned user equipment is characterized in that the second signaling and the first wireless signal are respectively sent by the first antenna port group.

Specifically, the above-mentioned user equipment is characterized in that the first signaling indicates G1 uplink resource pools. If the first uplink resource pool belongs to the G1 uplink resource pools, the second receiving module monitors the second signaling in the first time window; otherwise, the second receiving module monitors the second signaling in the first time window. Abandoning monitoring of the second signaling within a time window. wherein the G1 is a positive integer.

As an embodiment, the G1 uplink resource pools belong to the G uplink resource pools, and the G1 is less than or equal to the G.

As an embodiment, the first signaling is respectively sent M times in M time intervals, and the M is independent of the G1.

Specifically, the above-mentioned user equipment is characterized in that it further includes the following modules:

The third receiving module: used to receive the second wireless signal on the first time-frequency resource.

The second signaling is sent in the first time window, and the second signaling is used to determine the first time-frequency resource.

As an embodiment, the second wireless signal includes RAR (Random Access Response, random access response).

As an embodiment, the second signaling indicates {the first time-frequency resource, the MCS of the second wireless signal, the NDI of the second wireless signal, the RV of the second wireless signal, the At least one of the HARQ process numbers of the second wireless signal}.

The invention discloses a base station device for random access, which includes the following modules:

a second processing module: configured to receive the first wireless signal on the first air interface resource;

The first sending module: used to send the first signaling;

The second sending module: configured to send the second signaling in the first time window; or give up sending the second signaling in the first time window.

The first signaling is physical layer signaling, and the second signaling is physical layer signaling. The first signaling is used to determine whether the second signaling is sent in the first time window. The first air interface resource is an air interface resource in the first uplink resource pool, and the first uplink resource pool includes a positive integer number of air interface resources. One of the air interface resources includes a time-frequency resource and a feature sequence. The identifier of the second signaling is associated with the identifier of the first air interface resource.

As an embodiment, the first signaling is common to cells.

As an embodiment, the second signaling is DCI.

Specifically, in the above base station device, the second processing module is further configured to send downlink information.

The downlink information is used to determine at least one of {G antenna port groups, G uplink resource pools, and correspondence between the G antenna port groups and the G uplink resource pools}. The first uplink resource pool is one of the G uplink resource pools. The uplink resource pool includes a positive integer number of the air interface resources. The G is a positive integer.

As an embodiment, the first signaling is respectively sent M times in M time intervals, and the M and the G are irrelevant.

As an embodiment, the downlink information is common to cells.

Specifically, in the above base station device, the second processing module is further configured to send a downlink RS (Reference Signal, reference signal).

The downlink RS includes G RS ports, the G RS ports are respectively sent by the G antenna port groups, and the G antenna port groups correspond to the G uplink resource pools one-to-one. The first uplink resource pool is one of the G uplink resource pools, and the antenna port group corresponding to the first uplink resource pool is a first antenna port group.

As an embodiment, the downlink RS is used by the UE to determine the first antenna port group from the G antenna port groups.

As an embodiment, the reception quality of the RS port corresponding to the first antenna port group is higher than the reception quality of the RS port corresponding to a given antenna port group, wherein the given antenna port group is the G Any one of the antenna port groups is not equal to any one of the first antenna port groups.

As an example, any two different ones of the G antenna port groups cannot be assumed to be the same.

Specifically, the above-mentioned base station equipment is characterized in that the first signaling is transmitted on the first carrier, and at least one of {the second signaling, the first wireless signal} is transmitted on the second carrier . The first carrier and the second carrier are orthogonal in the frequency domain.

As an embodiment, the center frequency of the first carrier is lower than the center frequency of the second carrier. As a sub-embodiment, the center frequency of the first carrier is between 0.1 GHz and 3.5 GHz. As a sub-embodiment, the center frequency of the second carrier is greater than or equal to 6 GHz.

Specifically, the above-mentioned base station device is characterized in that the second signaling and the first wireless signal are respectively sent by the first antenna port group.

Specifically, the above-mentioned base station equipment is characterized in that the first signaling indicates G1 uplink resource pools. If the first uplink resource pool belongs to the G1 uplink resource pools, the second sending module sends the second signaling in the first time window; otherwise, the second sending module sends the second signaling in the first time window. Abandoning sending of the second signaling within a time window. wherein the G1 is a positive integer.

As an embodiment, the G1 uplink resource pools belong to the G uplink resource pools, where the G1 is less than or equal to the G.

As an embodiment, the first signaling is respectively sent M times in M time intervals, and the M is independent of the G1.

Specifically, the above-mentioned base station equipment is characterized in that it further includes the following modules:

The third sending module: used for sending the second wireless signal on the first time-frequency resource.

The second signaling is sent in the first time window, and the second signaling is used to determine the first time-frequency resource.

As an embodiment, the second wireless signal includes RAR (Random Access Response, random access response).

As an embodiment, the second signaling indicates {the first time-frequency resource, the MCS of the second wireless signal, the NDI of the second wireless signal, the RV of the second wireless signal, the At least one of the HARQ process numbers of the second wireless signal}.

Compared with the traditional scheme, the present invention has the following advantages:

- Support the base station to use multi-antenna beamforming to transmit RAR and corresponding DCI, which improves the efficiency and reliability of the RA process.

- Using the first signaling to indicate whether the UE needs to monitor the DCI corresponding to the RAR in the first time window, which reduces the complexity of the UE.

- The base station uses different beamforming vectors to send DCIs for different UEs on different sub-time windows, and at the same time uses the first signaling to instruct a certain UE only on the sub-time windows corresponding to its related beamforming vectors Monitoring DCI further reduces the complexity of the UE.

Description of drawings

Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

FIG. 1 shows a flowchart of wireless transmission according to an embodiment of the present invention;

FIG. 2 shows a schematic diagram of a first time window according to an embodiment of the present invention;

3 shows a schematic diagram of resource mapping in the time-frequency domain of G uplink resource pools according to an embodiment of the present invention;

4 shows a schematic diagram of resource mapping of downlink RSs according to an embodiment of the present invention;

5 shows a structural block diagram of a processing apparatus used in a UE according to an embodiment of the present invention;

6 shows a structural block diagram of a processing apparatus used in a base station according to an embodiment of the present invention;

Detailed ways

Example 1

Embodiment 1 illustrates a flowchart of wireless transmission, as shown in FIG. 1 . In FIG. 1, the base station N1 is the serving cell maintenance base station of the UE U2. In Figure 1, the steps in block F1, block F2 and block F3 are respectively optional.

For N1, the downlink information is sent in step S101; the downlink RS is sent in step S102; the first radio signal is received on the first air interface resource in step S11; the first signaling is sent in step S12; The second signaling is sent in the first time window; in step S104, the second wireless signal is sent on the first time-frequency resource.

For U2, the downlink information is received in step S201; the downlink RS is received in step S202; the first radio signal is sent on the first air interface resource in step S21; the first signaling is received in step S22; The second signaling is monitored in the first time window; in step S204, the second wireless signal is received on the first time-frequency resource.

In Embodiment 1, the first signaling is physical layer signaling, and the second signaling is physical layer signaling. The first signaling is used to determine whether the second signaling is sent in the first time window. The first air interface resource is an air interface resource in the first uplink resource pool, and the first uplink resource pool includes a positive integer number of air interface resources. One of the air interface resources includes a time-frequency resource and a feature sequence. The identifier of the second signaling is associated with the identifier of the first air interface resource, and the second signaling is used to determine the first time-frequency resource. The downlink information is used to determine at least one of {G antenna port groups, G uplink resource pools, and correspondence between the G antenna port groups and the G uplink resource pools}. The first uplink resource pool is one of the G uplink resource pools. The uplink resource pool includes a positive integer number of the air interface resources, and the G is a positive integer. The downlink RS includes G RS ports, the G RS ports are respectively transmitted by the G antenna port groups, and the G antenna port groups are in one-to-one correspondence with the G uplink resource pools. The antenna port group corresponding to the first uplink resource pool is a first antenna port group.

As a sub-embodiment 1 of Embodiment 1, the UE selects the first air interface resource from the first uplink resource pool by itself.

As a sub-embodiment 2 of the embodiment 1, the physical layer channel corresponding to the air interface resource includes a PRACH (Physical Random Access CHannel, physical random access channel).

As a sub-embodiment 3 of embodiment 1, the identifier of the first air interface resource is used to generate the identifier of the second signaling. As a sub-embodiment of sub-embodiment 3 of embodiment 1, {time domain resources occupied by the first air interface resources, frequency domain resources occupied by the first air interface resources, occupied by the first air interface resources At least one of the characteristic sequences } is used to determine the identity of the second signaling. As a sub-embodiment of sub-embodiment 3 of embodiment 1, the identifier of the second signaling is used to determine {the RS sequence of the DMRS of the second signaling, the CRC of the second signaling , at least one of the scrambling sequence of the CRC of the second signaling, and the time-frequency resources occupied by the second signaling}.

As a sub-embodiment 4 of the embodiment 1, the first signaling is common to the cells.

As a sub-embodiment 5 of the embodiment 1, the first signaling is respectively sent M times in M time intervals, the M is greater than 1, and the M and the G are irrelevant. As a sub-embodiment of sub-embodiment 5 of embodiment 1, the first signaling is respectively sent by different antenna port groups in the M time intervals, and one of the antenna port groups includes a positive integer number of antennas port. As a sub-embodiment of sub-embodiment 5 of embodiment 1, the M is configurable.

As sub-embodiment 6 of embodiment 1, the second signaling is DCI.

As a sub-embodiment 7 of the embodiment 1, any two different air interface resources are orthogonal to each other.

As a sub-embodiment 8 of Embodiment 1, the second wireless signal includes RAR (Random Access Response, random access response).

As a sub-embodiment 9 of the embodiment 1, the downlink information is common to the cells.

As a sub-embodiment 10 of embodiment 1, the downlink RS is used by the UE to determine the first antenna port group from the G antenna port groups.

As a sub-embodiment 11 of Embodiment 1, the reception quality of the RS port corresponding to the first antenna port group is higher than the reception quality of the RS port corresponding to a given antenna port group, wherein the given antenna port A group is any one of the G antenna port groups that is not equal to the first antenna port group.

As a sub-embodiment of sub-embodiment 11 of Embodiment 1, the received quality includes one of {RSRP (Reference Signal Received Power, reference signal received power), RSRQ (Reference Signal Received Quality, reference signal received quality)} or two kinds.

As a sub-embodiment 12 of embodiment 1, any two different antenna port groups among the G antenna port groups cannot be assumed to be the same.

As a sub-embodiment of sub-embodiment 12 of embodiment 1, the antenna port is formed by superimposing multiple antennas through antenna virtualization (Virtualization), and mapping coefficients from the multiple antennas to the antenna port form a beam Assignment vector. The beamforming vectors corresponding to the first antenna port and the second antenna port cannot be assumed to be the same, wherein the first antenna port and the second antenna port respectively belong to any two of the G antenna port groups different groups of said antenna ports.

As a sub-embodiment of sub-embodiment 12 of embodiment 1, the UE cannot perform joint channel estimation using reference signals sent by any two of the G antenna port groups.

As a sub-embodiment 13 of Embodiment 1, the first signaling is transmitted on a first carrier, and at least one of {the second signaling, the first wireless signal} is transmitted on a second carrier. The first carrier and the second carrier are orthogonal in the frequency domain.

As a sub-embodiment of sub-embodiment 13 of embodiment 1, the center frequency of the first carrier is lower than the center frequency of the second carrier. As a sub-embodiment, the center frequency of the first carrier is between 0.1 GHz and 3.5 GHz. As a sub-embodiment, the center frequency of the second carrier is greater than or equal to 6 GHz.

As a sub-embodiment 14 of Embodiment 1, the second signaling and the first wireless signal are respectively transmitted by the first antenna port group.

As a sub-embodiment 15 of Embodiment 1, the first signaling indicates G1 uplink resource pools. If the first uplink resource pool belongs to the G1 uplink resource pools, the UE monitors the second signaling in the first time window; otherwise, the UE abandons monitoring in the first time window the second signaling. wherein the G1 is a positive integer.

As a sub-embodiment of sub-embodiment 15 of Embodiment 1, the G1 uplink resource pools belong to the G uplink resource pools, and the G1 is less than or equal to the G.

As a sub-embodiment of sub-embodiment 15 of Embodiment 1, the first time window includes G1 sub-time windows, and the G1 sub-time windows are in one-to-one correspondence with the G1 uplink resource pools. The first signaling is used to determine the correspondence between the G1 sub-time windows and the G1 uplink resource pools.

As a sub-embodiment of sub-embodiment 15 of embodiment 1, the first signaling is respectively sent M times in M time intervals, and the M is independent of the G1.

Example 2

Embodiment 2 illustrates a schematic diagram of the first time window in the present invention, as shown in FIG. 2 .

In Embodiment 2, the first time window occupies T consecutive time units in the time domain, where T is a positive integer. The first time window includes G1 sub-time windows, where G1 is a positive integer. In FIG. 2, a box filled with oblique lines represents any one of the sub-time windows in the G1 sub-time windows.

As a sub-embodiment 1 of embodiment 2, the time unit is the duration of one wideband symbol, and as a sub-embodiment of sub-embodiment 1 of embodiment 2, the wideband symbol is {OFDM symbol, SC-FDMA symbol, One of SCMA notation }.

As a sub-embodiment 2 of the embodiment 2, the sub-time window occupies T1 time units in the time domain, and the T1 is a positive integer less than or equal to T.

As a sub-embodiment of sub-embodiment 2 of embodiment 2, the T1 time units are discontinuous.

As a sub-embodiment 3 of the embodiment 2, the time domain resources occupied by any two different sub-time windows do not overlap with each other.

As a sub-embodiment 4 of embodiment 2, the G1 sub-time windows and the G1 uplink resource pools are in one-to-one correspondence, and the first signaling is used to determine the time interval between the G1 sub-time windows and the G1 uplink resource pools Correspondence.

Example 3

Embodiment 3 illustrates a schematic diagram of resource mapping of G uplink resource pools in the time-frequency domain in the present invention, as shown in FIG. 3 .

In Embodiment 3, one of the uplink resource pools includes a positive integer number of air interface resources. One of the air interface resources includes a time-frequency resource and a feature sequence. In FIG. 3 , a square with a numerical label represents one of the time-frequency resources, and the time-frequency resources with different labels are distributed continuously or discontinuously in the time-frequency domain, as shown in FIG. 3 .

As a sub-embodiment 1 of Embodiment 3, one of the time-frequency resources includes Q RUs (Resource Unit, resource unit), wherein the Q is a positive integer, and the RU occupies one subcarrier in the frequency domain, and in the time domain Occupies the duration of one wideband symbol. As a sub-embodiment of sub-embodiment 1 of embodiment 3, the duration of the one wideband symbol is the inverse of the sub-carrier corresponding to the corresponding RU. As a sub-embodiment of sub-embodiment 1 of embodiment 3, the wideband symbol is one of {OFDM symbol, SC-FDMA symbol, SCMA symbol}.

As a second sub-embodiment of the third embodiment, the uplink resource pool includes a plurality of the time-frequency resources.

As a sub-embodiment of sub-embodiment 2 of embodiment 3, the multiple time-frequency resources are discontinuous in the time domain. For example, the uplink resource pool includes labels {1, 2, 9, 10} of the time-frequency resources.

As a sub-embodiment of sub-embodiment 2 of embodiment 3, the multiple time-frequency resources are continuous in the time domain. For example, the uplink resource pool includes the time-frequency resources labeled {1, 2, 3, 4}.

As a sub-embodiment of sub-embodiment 2 of embodiment 3, the multiple time-frequency resources are discontinuous in the frequency domain. For example, the uplink resource pool includes the time-frequency resources labeled {1, 2, 17, 18}.

As a sub-embodiment of sub-embodiment 2 of embodiment 3, the multiple time-frequency resources are continuous in the frequency domain. For example, the uplink resource pool includes the time-frequency resources labeled {1, 2, 5, 6}.

As a sub-embodiment 3 of the embodiment 3, any two of the G uplink resource pools are orthogonal (ie, do not overlap) in the time domain.

As a sub-embodiment 4 of Embodiment 3, any two of the G uplink resource pools are orthogonal (ie, do not overlap) in the frequency domain.

As a sub-embodiment 5 of Embodiment 3, any two of the G uplink resource pools do not share RUs. The RU occupies one subcarrier in the frequency domain and occupies the duration of one wideband symbol in the time domain.

As a sub-embodiment 6 of Embodiment 3, any two of the G uplink resource pools include the same (multiple) of the characteristic sequences.

As a sub-embodiment 7 of the embodiment 3, any two of the uplink resource pools in the G uplink resource pools occupy the same RU and the mutually orthogonal characteristic sequences.

As a sub-embodiment 8 of the embodiment 3, the characteristic sequence includes a pseudo-random sequence.

As a sub-embodiment 9 of the embodiment 3, the characteristic sequence includes a Zadoff-Chu sequence.

As a sub-embodiment 10 of the embodiment 3, the characteristic sequence includes a CP (Cyclic Prefix, cyclic prefix).

As a sub-embodiment 11 of Embodiment 3, a plurality of different air interface resources may be mapped to one of the time-frequency resources through a plurality of different feature sequences.

As the twelfth sub-embodiment of the third embodiment, any two different air interface resources are orthogonal to each other. As a sub-embodiment of sub-embodiment 12 of Embodiment 3, the time-frequency resources corresponding to any two different air interface resources are orthogonal to each other, or any two different air interface resources correspond to the same time-frequency resources and mutually orthogonal said signature sequences.

Example 4

Embodiment 4 illustrates a schematic diagram of resource mapping of downlink RSs in the present invention, as shown in FIG. 4 .

In Embodiment 4, the downlink RS includes G RS ports, and the G RS ports are respectively transmitted by G antenna port groups. One of the RS ports occupies 1 continuous time unit in the time domain, and occupies W frequency units in the frequency domain, and the I and W are respectively positive integers. The different RS ports occupy different I time units in the time domain. The square filled with dots in FIG. 4 represents the RS port #g, where 1≤g≤G.

As a sub-embodiment 1 of the embodiment 4, the time unit occupies the duration of one wideband symbol in the time domain. As a sub-embodiment of sub-embodiment 1 of embodiment 4, the wideband symbol is one of {OFDM symbol, SC-FDMA symbol, SCMA symbol}.

As sub-embodiment 2 of embodiment 4, the frequency unit occupies one subcarrier in the frequency domain.

As a sub-embodiment 3 of the embodiment 4, the W frequency units occupied by one of the RS ports are discontinuous.

As a sub-embodiment of sub-embodiment 3 of embodiment 4, the W frequency units occupied by one RS port appear at equal intervals in the frequency domain.

As a sub-embodiment of sub-embodiment 3 of embodiment 4, one of the RS ports is wideband (that is, the system bandwidth is divided into a positive integer number of frequency-domain regions, and one RS port appears on all frequency-domain regions within the system bandwidth , the bandwidth corresponding to the frequency domain region is equal to the difference between the frequencies of two adjacent frequency units of an RS port).

As a sub-Embodiment 4 of Embodiment 4, the I is equal to 1.

As a sub-embodiment 5 of the embodiment 4, the I is greater than 1.

As a sub-embodiment 6 of the embodiment 4, the W is greater than 1.

Example 5

Embodiment 5 illustrates a structural block diagram of a processing apparatus used in a UE, as shown in FIG. 5 .

In FIG. 5 , the UE apparatus 200 is mainly composed of a first processing module 201 , a first receiving module 202 , a second receiving module 203 and a third receiving module 204 .

The first processing module 201 is used for sending the first wireless signal on the first air interface resource; the first receiving module 202 is used for receiving the first signaling; the second receiving module 203 is used for monitoring the second signaling in the first time window ; The third receiving module 204 is configured to receive the second wireless signal on the first time-frequency resource.

In Embodiment 5, the first signaling is physical layer signaling, and the second signaling is physical layer signaling. The first signaling is used to determine whether the second signaling is sent in the first time window. The first air interface resource is an air interface resource in the first uplink resource pool, and the first uplink resource pool includes a positive integer number of air interface resources. One of the air interface resources includes a time-frequency resource and a feature sequence. The identifier of the second signaling is associated with the identifier of the first air interface resource. The second signaling is used to determine the first time-frequency resource.

As a sub-embodiment 1 of the fifth embodiment, the first processing module 201 is further configured to receive downlink information. The downlink information is used to determine at least one of {G antenna port groups, G uplink resource pools, and correspondence between the G antenna port groups and the G uplink resource pools}. The first uplink resource pool is one of the G uplink resource pools. The uplink resource pool includes a positive integer number of the air interface resources. The G is a positive integer.

As a second sub-embodiment of the fifth embodiment, the first processing module 201 is further configured to receive a downlink RS (Reference Signal, reference signal). The downlink RS includes G RS ports, the G RS ports are respectively sent by the G antenna port groups, and the G antenna port groups correspond to the G uplink resource pools one-to-one. The first uplink resource pool is one of the G uplink resource pools, and the antenna port group corresponding to the first uplink resource pool is a first antenna port group.

As a sub-embodiment 3 of Embodiment 5, the first signaling is transmitted on a first carrier, and at least one of {the second signaling, the first wireless signal} is transmitted on a second carrier. The first carrier and the second carrier are orthogonal in the frequency domain.

As a sub-embodiment 4 of the embodiment 5, the second signaling and the first wireless signal are respectively sent by the first antenna port group.

As sub-embodiment 5 of embodiment 5, the first signaling indicates G1 uplink resource pools. If the first uplink resource pool belongs to the G1 uplink resource pools, the second receiving module 203 monitors the second signaling in the first time window; otherwise, the second receiving module 203 is in the The monitoring of the second signaling is abandoned in the first time window. wherein the G1 is a positive integer.

Example 6

Embodiment 6 illustrates a structural block diagram of a processing apparatus used in a base station, as shown in FIG. 6 .

In FIG. 6 , the base station apparatus 300 is mainly composed of a second processing module 301 , a first sending module 302 , a second sending module 303 and a third sending module 304 .

The second processing module 301 is configured to receive the first wireless signal on the first air interface resource; the first sending module 302 is configured to send the first signaling; the second sending module 303 is configured to send the second signaling in the first time window ; The third sending module 304 is configured to send the second wireless signal on the first time-frequency resource.

In Embodiment 6, the first signaling is physical layer signaling, and the second signaling is physical layer signaling. The first signaling is used to determine whether the second signaling is sent in the first time window. The first air interface resource is an air interface resource in the first uplink resource pool, and the first uplink resource pool includes a positive integer number of air interface resources. One of the air interface resources includes a time-frequency resource and a feature sequence. The identifier of the second signaling is associated with the identifier of the first air interface resource. The second signaling is used to determine the first time-frequency resource.

As sub-embodiment 1 of embodiment 6, the second processing module 301 is further configured to send downlink information. The downlink information is used to determine at least one of {G antenna port groups, G uplink resource pools, and correspondence between the G antenna port groups and the G uplink resource pools}. The first uplink resource pool is one of the G uplink resource pools. The uplink resource pool includes a positive integer number of the air interface resources. The G is a positive integer.

As the second sub-embodiment of the sixth embodiment, the second processing module 301 is further configured to send a downlink RS (Reference Signal, reference signal). The downlink RS includes G RS ports, the G RS ports are respectively sent by the G antenna port groups, and the G antenna port groups correspond to the G uplink resource pools one-to-one. The first uplink resource pool is one of the G uplink resource pools, and the antenna port group corresponding to the first uplink resource pool is a first antenna port group.

As a sub-embodiment 3 of Embodiment 6, the first signaling is transmitted on a first carrier, and at least one of {the second signaling, the first wireless signal} is transmitted on a second carrier. The first carrier and the second carrier are orthogonal in the frequency domain.

As a sub-embodiment 4 of the embodiment 6, the second signaling and the first wireless signal are respectively sent by the first antenna port group.

As sub-embodiment 5 of embodiment 6, the first signaling indicates G1 uplink resource pools. If the first uplink resource pool belongs to the G1 uplink resource pools, the second sending module 303 sends the second signaling in the first time window; otherwise, the second sending module 303 sends the second signaling in the The sending of the second signaling is abandoned in the first time window. wherein the G1 is a positive integer.

Those skilled in the art can understand that all or part of the steps in the above method can be completed by instructing relevant hardware through a program, and the program can be stored in a computer-readable storage medium, such as a read-only memory, a hard disk or an optical disk. Optionally, all or part of the steps in the foregoing embodiments may also be implemented using one or more integrated circuits. Correspondingly, each module unit in the above-mentioned embodiments may be implemented in the form of hardware, or may be implemented in the form of software function modules, and the present application is not limited to any specific form of the combination of software and hardware. The UE or terminal in the present invention includes, but is not limited to, mobile phones, tablet computers, notebooks, network cards, NB-IOT terminals, eMTC terminals and other wireless communication devices. The base station or system equipment in the present invention includes but is not limited to wireless communication equipment such as macrocell base station, microcell base station, home base station, and relay base station.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims (11)

1. A method in a UE for random access, comprising the steps of:

-step a. transmitting a first wireless signal on a first air interface resource;

-step b. receiving a first signalling;

-step c. monitoring the second signaling in a first time window; or refrain from monitoring for the second signaling in the first time window;

wherein the first signaling is DCI and the second signaling is DCI; the first signaling is used to determine whether the second signaling is sent in the first time window; the first air interface resource is one air interface resource in a first uplink resource pool, and the first uplink resource pool comprises a positive integer of air interface resources; one of the air interface resources comprises a time frequency resource and a characteristic sequence; the identifier of the second signaling is associated with the identifier of the first air interface resource.

2. A method in a base station for random access, comprising the steps of:

-a. receiving a first wireless signal on a first air interface resource;

-step b. sending a first signalling;

-step c. sending a second signaling in a first time window; or abandoning to send the second signaling in the first time window;

wherein the first signaling is DCI and the second signaling is DCI; the first signaling is used to determine whether the second signaling is sent in the first time window; the first air interface resource is one air interface resource in a first uplink resource pool, and the first uplink resource pool comprises a positive integer of air interface resources; one of the air interface resources comprises a time frequency resource and a characteristic sequence; the identifier of the second signaling is associated with the identifier of the first air interface resource.

3. A user equipment for random access, comprising the following modules:

a first processing module: for transmitting a first wireless signal on a first air interface resource;

a first receiving module: for receiving a first signaling;

a second receiving module: for monitoring the second signaling in the first time window; or refrain from monitoring for the second signaling in the first time window;

wherein the first signaling is DCI and the second signaling is DCI; the first signaling is used to determine whether the second signaling is sent in the first time window; the first air interface resource is one air interface resource in a first uplink resource pool, and the first uplink resource pool comprises a positive integer of air interface resources; one of the air interface resources comprises a time frequency resource and a characteristic sequence; the identifier of the second signaling is associated with the identifier of the first air interface resource.

4. The UE of claim 3, further comprising:

a third receiving module: for receiving a second wireless signal on a first time-frequency resource;

the second signaling is sent in the first time window, the second signaling is used for determining the first time-frequency resource, and a transmission channel corresponding to the second wireless signal is D L-SCH.

5. The UE of claim 3 or 4, wherein the first processing module receives downlink information;

wherein the downlink information is used to determine at least one of { G antenna port groups, G uplink resource pools, a correspondence between the G antenna port groups and the G uplink resource pools }; the first uplink resource pool is one of the G uplink resource pools; the uplink resource pool comprises a positive integer of the air interface resources; and G is a positive integer.

6. The UE of claim 5, wherein the first processing module receives a downlink RS (Reference Signal);

the downlink RS comprises G RS ports, the G RS ports are respectively sent by the G antenna port groups, and the G antenna port groups correspond to the G uplink resource pools one by one; the first uplink resource pool is one of the G uplink resource pools, and the antenna port group corresponding to the first uplink resource pool is a first antenna port group.

7. The UE of any of claims 3 to 6, wherein the first signaling is transmitted on a first carrier, and wherein at least one of { the second signaling, the first radio signal } is transmitted on a second carrier; the first carrier and the second carrier are orthogonal in the frequency domain.

8. The UE of claim 6, wherein the second signaling and the first wireless signal are transmitted by the first antenna port group respectively.

9. The user equipment according to any of claims 3-8, wherein the first signaling indicates G1 uplink resource pools; if the first uplink resource pool belongs to the G1 uplink resource pools, the UE monitors the second signaling in the first time window; otherwise, the UE abandons monitoring the second signaling in the first time window; wherein G1 is a positive integer.

10. The UE of any one of claims 3 to 9, wherein a physical layer channel corresponding to any air interface resource in the first uplink resource pool comprises a PRACH; and the time domain resource occupied by the first air interface resource is used for determining the identifier of the second signaling.

11. A base station device for random access, comprising the following modules:

a second processing module: the first wireless signal is received on a first air interface resource;

a first sending module: for transmitting a first signaling;

a second sending module: for transmitting second signaling in the first time window; or abandoning to send the second signaling in the first time window;

wherein the first signaling is DCI and the second signaling is DCI; the first signaling is used to determine whether the second signaling is sent in the first time window; the first air interface resource is one air interface resource in a first uplink resource pool, and the first uplink resource pool comprises a positive integer of air interface resources; one of the air interface resources comprises a time frequency resource and a characteristic sequence; the identifier of the second signaling is associated with the identifier of the first air interface resource.

Images