WO2017190566A1

WO2017190566A1 - Method and device for use in relay transmission in user equipment and base station

Info

Publication number: WO2017190566A1
Application number: PCT/CN2017/078244
Authority: WO
Inventors: 张晓博
Original assignee: 上海朗帛通信技术有限公司
Priority date: 2016-05-04
Filing date: 2017-03-26
Publication date: 2017-11-09
Also published as: CN107347207B; CN107347207A

Abstract

Disclosed are a method and device for narrowband mobile communication. A UE receives first information and receives a first radio signal to determine second information, and then transmits a first indication. The first information and the second information are used for determining the first indication. The first indication is used for expressing an index corresponding to a given condition being satisfied by the first information and the second information. The present invention, by means of measuring information related to the channel quality of a radio link between a relay UE and a narrowband UE on the relay UE and by receiving information related to the channel quality of a radio link between a base station and the narrowband UE submitted by the narrowband UE, determines whether the narrowband UE needs to acquire scheduling information directly from the relay UE and whether the narrowband UE needs to change a relay UE used for uplink relay transmission, thus reducing performance impact brought forth by the mobility of the narrowband UE and of the relay UE, and increasing overall system performance.

Description

Method and device for relay transmission in user equipment and base station

Technical field

The present invention relates to transmission schemes in wireless communication systems, and more particularly to methods and apparatus for supporting wireless relay transmissions.

Background technique

A scheme of Layer 3 (Layer-3) relay base station is proposed in the 3GPP-3rd Generation Partner Project R (Release, Release) 9. The relay base station has the function of a normal base station for the UE (User Equipment), and can independently schedule data and transmit a downlink HARQ-ACK (Hybrid Automatic Repeat reQuest).

In a conventional 3GPP system, data transmission takes place between a base station and a UE. In 3GPP R12, D2D (Device to Device) communication is discussed and discussed. The essential feature of D2D is to allow data transmission between UEs. In 3GPP R13, eD2D (Enhancements to LTE Device to Device) is established, and its main feature is to introduce a UE relay function. In eD2D, a relay user equipment (Relay UE) relays data exchange between a remote user equipment (Remote UE) and a base station.

At the #GPP RAN (Radio Access Network) #69 plenary meeting, NB-IOT (NarrowBand Internet of Things) was established. Further, at the 3GPP RAN #71 plenary meeting (RP-160655), Feo2D (Further Enhancements to LTE Device to Device, further enhancement of LTE D2D) for IoT and wearable devices is proposed. In FeD2D, D2D communication may be implemented through an air interface similar to NB-IoT.

A typical application scenario of FeD2D is that there are multiple wearable devices around a smart terminal. The intelligent terminal relays data exchange between the wearable device and the base station, that is, the smart terminal and the wearable device respectively serve as a Relay UE and a Remote UE.

Summary of the invention

The R12 and R13D2D transmissions are mainly for the public safety (Public Safety) scenario. In the design data transmission, the repeated transmission is adopted, and the transmission between the UE and the UE does not need to consider the influence of mobility (Mobility), and each transmission is regarded as an independent transmission. For FeD2D, considering the combination of spectrum efficiency and transmission reliability, the Relay UE can relay the data or control information of the Remote UE, thereby obtaining performance gain due to the small path loss between the Relay UE and the Remote UE. And power savings.

Based on the original design of FeD2D, there are currently two options that can be adopted. The first solution is that the eNB maintains the control plane of the Remote UE, that is, the eNB directly sends scheduling information to the Remote UE, and the eNB directly sends downlink data to the Remote UE; and the uplink data (and control) information of the Remote UE passes the scheduling of the eNB by Relay. Forwarding, the feature of this solution is that the design of Remote UE and Relay UE is relatively simple. In another solution, the Relay UE directly sends scheduling information to the Remote UE, and the scheduling information may be generated by the Relay UE itself, or may be indirectly controlled by the eNB, and the Relay UE relays data (and control) information of the Remote UE. The feature of the program is that the physical layer design changes are small. Through the research of the two schemes, the first scheme is more suitable for the situation that the channel quality of the Remote UE and the Relay UE and the eNB are better, and the second scheme is more suitable for the remote UE to be located far from the eNB. Considering that both schemes bring system gain, how to properly select the transmission scheme according to the channel conditions between Remote UE, Relay UE and eNB will be a problem to be solved.

The present invention provides a solution to the above problems. It should be noted that, in the case of no conflict, the features in the embodiments and the embodiments of the present application may be combined with each other arbitrarily. For example, features in embodiments and embodiments in the UE of the present application may be applied to a base station, and vice versa. For another example, the features in the embodiments and embodiments in the D2D transmitting UE of the present application (ie, transmitting a wireless signal on a D2D link) may be applied to a D2D receiving UE (ie, receiving the wireless signal on a D2D link). ,vice versa. Further, although the original intention of the present invention is directed to FeD2D (i.e., D2D transmission is based on narrowband), the solution of the present invention is also applicable to wideband D2D relay (i.e., D2D transmission is broadband based).

The invention discloses a method in a UE used for relay communication, which comprises the following steps:

- Step A. Receiving the first message

- Step B. Receiving the first wireless signal

- Step C. Send the first indication

Wherein the first wireless signal is used to determine the second information. The first information and the second information are used to determine the first indication. The sender of the first information is a first node, and the first information is used to indicate a channel quality of the second node to the first node. The second information is used to indicate channel quality between the first node and the UE. The first indication is used to indicate that the first information and the second information satisfy an index corresponding to a given condition.

In D2D-based relay transmission, since the transmission is for the purpose of Public Safety, the transmission of the UE does not need to consider controlling the power consumption, and the system does not need to consider which UE is to receive more efficient and more power-saving. Therefore, the system and the base station do not need to select a Relay UE with a suitable location, that is, a Relay UE with a smaller Path loss of the Remote UE for relay transmission. In FeD2D, because the power consumption of the Remote UE and the implementation complexity of the system are issues to be considered, the second wireless signal and the second information are used by the Relay UE to obtain the channel quality related information of the Remote UE to the Relay UE, and report The eNB is provided to help the eNB to select a suitable Relay UE to provide relay services to the Remote UE. At the same time, considering that the coverage of the eNB will gradually expand in the future, when the Remote UE is far away from the eNB, it is more efficient to obtain the scheduling information directly from the Relay UE. Therefore, the Remote UE further sends the first information indicating the channel quality of the eNB to the Remote UE to the Relay UE, and the Relay UE confirms the first indication according to the first information and the second information, and sends the signal to the eNB to report the Remote to the base station. The channel conditions between the UE, the Relay UE and the eNB, and help the base station to select a reasonable transmission mode, and select a suitable Relay UE for the Remote UE.

As an embodiment, the first node and the second node are a Remote UE and a base station, respectively. In the above embodiment, the Relay UE acquires the channel quality of the side link through the first wireless signal, and acquires the channel quality of the cellular link (Cellular Link) through the first information reported by the Remote UE, thereby determining the first Instructing to help the eNB change the manner in which the Remote UE acquires scheduling information, and re-select the Relay UE that relays the Remote UE information. The method for changing the remote UE to acquire the scheduling information is to select a one of the two methods of directly transmitting the scheduling to the Remote UE by using the eNB, and indirectly transmitting the scheduling to the Remote UE by using the Relay UE, to provide a service for the Remote UE.

As an embodiment, the first information includes CSI (Channel State Information).

In an embodiment, the first information includes an RSRP (Reference signal) Received power, reference signal received power).

In one embodiment, the first information includes an RSRQ (Reference Signal received quality).

As an embodiment, the first information includes CQI (Channel Quality Information).

As an embodiment, the first information includes an MCS (Modulation and Coding Status).

As an embodiment, the bandwidth occupied by the first wireless signal does not exceed 1080 kHz.

As a sub-embodiment of this embodiment, the bandwidth occupied by the first wireless signal is one of {3.75KHz, 15KHz, 45KHz, 90KHz, 180KHz, 1080KHz}.

As an embodiment, the first wireless signal includes at least one of a {synchronization sequence, a discovery channel, a reference signal}.

As an embodiment, the first wireless signal includes an RS (Reference Signal).

In one embodiment, the first wireless signal includes a {CRS (Common Reference Signal), a CSI-RS (Channel State Information Reference Signal), and a NB-IoT-RS (Narrow Band Internet). At least one of the Things Reference Signal, a narrowband IoT reference signal).

As a sub-embodiment of this embodiment, the NB-IoT-RS is a reference signal for narrowband communication between the first node and the UE.

As a sub-embodiment of this embodiment, the NB-IoT-RS is an NB-RS (Narrow Band Reference Signal).

As a sub-embodiment of the embodiment, the NB-IoT-RS is used for at least demodulation of a NB-PBCH (Narrow Band Physical Broadcast Channel).

As an embodiment, the first radio signal is transmitted in a PUSCH (Physical Uplink Shared Channel).

As an embodiment, the transmission channel of the first wireless signal is a UL-SCH (Uplink Shared Channel).

As an embodiment, the first wireless signal includes {NB-PSS (Narrow Band Primary Synchronization Signal), NB-SSS (Narrow) At least one of Band Secondary Synchronization Signal).

As an embodiment, the second information includes CSI.

As an embodiment, the second information includes an RSRP.

As an embodiment, the second information includes RSRQ.

As an embodiment, the second information includes a CQI.

As an embodiment, the second information includes an MCS.

As an embodiment, the first node is a terminal device.

As an embodiment, the second node is a network side device.

In one embodiment, the first node and the second node are non-co-located;

As a sub-embodiment of the embodiment, the first node and the second node are non-co-located means that the first node and the second node are two different communication devices.

As a sub-embodiment of the embodiment, the first node and the second node are non-co-located, meaning that there is no wired connection between the first node and the second node.

As a sub-embodiment of the embodiment, the first node and the second node are non-co-located, meaning that the first node and the second node are located at different locations.

In an embodiment, the first indication is used to indicate that the first information and the second information meet an index corresponding to a given condition, that is, the first indication is composed of M bits, and The value of the first indication is related to {the relationship between the first information and the first threshold, and the relationship between the second information and the second threshold}. The first threshold is predefined or configured by high layer signaling, and the second threshold is predefined or configured by high layer signaling, and the M is a positive integer.

As a sub-embodiment of this embodiment, the M is equal to two.

As a sub-embodiment of the embodiment, the first information is not less than the first threshold, the second information is not less than the second threshold, and the first indication is “00” ;

The feature of the foregoing sub-embodiment is that the “the first information is not less than the first threshold” indicates that the remote UE is still located within the normal coverage of the eNB, and the scheduling information can be directly obtained by the eNB; “the second The information is not less than the second threshold. The location of the Remote UE can still ensure that the current Relay UE can correctly and efficiently receive information from the Remote UE. The first indication indicates that the eNB maintains the existing scheduled transmission mode and the selection of the Relay UE remains unchanged.

As a sub-embodiment of the embodiment, the first information is not less than the first threshold, the second information is smaller than the second threshold, and the first indication is “01”;

The feature of the foregoing sub-embodiment is that the “the first information is not less than the first threshold” indicates that the remote UE is still located within the normal coverage of the eNB, and the scheduling information can be directly obtained by the eNB; “the second The information is smaller than the second threshold. The location of the Remote UE indicates that the transmission of the Remote UE cannot be correctly and efficiently received by the existing Relay UE serving the Remote UE. The Relay UE that needs to seek better channel conditions is Remote. The UE provides the service. The first indication indicates that the eNB still directly sends scheduling information to the Remote UE, and searches for a Remote UE with a smaller path loss for the Remote UE.

As a sub-embodiment of the embodiment, the first information is smaller than the first threshold, the second information is not smaller than the second threshold, and the first indication is “10”;

The feature of the foregoing sub-embodiment is that the “the first information is smaller than the first threshold” indicates that the location of the Remote UE is already outside the normal coverage of the eNB, and the control information such as scheduling and the downlink data are directly obtained from the eNB. The information will bring a large waste of resources and performance loss. It is necessary to consider sending scheduling information and data information to the Remote UE through the Relay UE. "The second information is not less than the second threshold" indicates that the location of the Remote UE can still ensure that the current Relay UE can correctly and efficiently receive information from the Remote UE. The first indication indicates that the eNB sends the scheduling information of the Remote UE to the Remote UE through the Relay UE, and the Relay UE that maintains the service for the Remote UE remains unchanged.

As a sub-embodiment of the embodiment, the first information is smaller than the first threshold, the second information is smaller than the second threshold, and the first indication is “11”;

The feature of the above sub-embodiment is that "the first information is smaller than the first threshold" indicates that the location of the Remote UE is already outside the normal coverage of the eNB, and the control information such as scheduling and the data information are directly obtained from the eNB. This will result in a large waste of resources and power consumption. It is necessary to consider sending scheduling information to the Remote UE through the Relay UE. "The second information is smaller than the second threshold" indicates that the location of the Remote UE has caused the transmission of the Remote UE to be correctly and efficiently received by the existing Relay UE serving the Remote UE, and the channel condition needs to be sought better. The Relay UE provides services for the Remote UE. The first indication indicates that the eNB sends the scheduling information of the Remote UE to the Remote UE through the Relay UE, and searches for the Relay UE with a smaller path loss for the Remote UE.

Through the foregoing method, the change of the channel status between the Remote UE and the Relay UE, the Remote UE, and the eNB can be sent to the base station, the base station is selected to select a reasonable transmission manner, and the appropriate Relay UE is selected for the Remote UE. Thus ensuring that no matter the face of Remote The UE moves, or faces the movement or switch of the Relay UE, and the base station can maintain the spectrum efficiency and low power consumption through the Relay UE and the Remote UE.

Specifically, according to an aspect of the invention, the method is characterized in that the step C further comprises the following steps:

- Step C1. Send at least one of {first information, second information}.

As an embodiment, the step C1 is to send the first information and the second information.

As an embodiment, the first indication is “01”, and the step C1 is to send the second information.

As an embodiment, the first indication is “10”, and the step C1 is to send the first information.

As an embodiment, the first indication is “11”, and the step C1 is to send the first information and the second information.

Step C0. Receive third information, the third information being used to determine the first time-frequency resource.

The first indication is transmitted in the first time-frequency resource. The first information and the second information are transmitted in the first time-frequency resource.

The trait of the foregoing step is that the base station sends the first indication configuration corresponding resource to the Relay UE by using the third information.

As an embodiment, the step C0 further includes the following steps:

Step C10. Sending second signaling, the second signaling being used to request the first time-frequency resource.

As an embodiment, the third information is transmitted on a PDCCH (Physical Downlink Control Channel).

As an embodiment, the third information is transmitted on an R-PDCCH (Relay Physical Downlink Control Channel).

As an embodiment, the third information is transmitted on an EPDCCH (Enhanced Physical Downlink Control Channel).

As an embodiment, the third information is RRC (Radio Resource Control) common information.

As an embodiment, the third information is RRC specific information.

As an embodiment, the third information is transmitted on a PDSCH (Physical Downlink Shared Channel).

As an embodiment, the first time-frequency resource is periodically configured.

Step D0. Receive fourth information, the fourth information being used to determine the second time-frequency resource.

Step D1. Sending a second wireless signal on the second time-frequency resource, or receiving the second wireless signal on the second time-frequency resource, or transmitting the first signaling on the second time-frequency resource.

The second wireless signal is used to determine a channel quality between the UE and the first node. The first signaling includes scheduling information of the first node.

The trait of the foregoing step is that after receiving the first indication sent by the Relay UE, the base station instructs subsequent operations of the Relay UE and the Remote UE to change the relay mode and the relay node of the Remote UE.

As an embodiment, the first indication is “01”, and the step D1 is to receive the second wireless signal on the second time-frequency resource.

The trait of the foregoing embodiment is that the eNB determines, according to the first indication, that the Relay UE needs to be reconfigured for the Remote UE. Therefore, the Remote UE is triggered to send the second wireless signal, and the UE and other possible adjacent UEs that can be the Relay are triggered to perform measurement and report.

As an embodiment, the first indication is “10”, and the step D1 is to send the first signaling on the second time-frequency resource.

The trait of the foregoing embodiment is that the eNB determines, according to the first indication, that the scheduling information needs to be directly sent by the UE to the Remote UE. Therefore, the subsequent scheduling information of the eNB is directly sent by the Relay UE to the Remote UE through the first signaling.

As an embodiment, the first indication is “11”, and the step D1 is to send the second wireless signal on the second time-frequency resource.

The trait of the foregoing embodiment is that the eNB determines, according to the first indication, that the UE that needs to be a new relay can directly send scheduling information for the Remote UE. Therefore, the eNB triggers the UE and other possible neighboring UEs that can act as Relay to send the second wireless signal, and triggers the Remote UE to receive and measure to obtain a new UE for relay transmission.

As an embodiment, the fourth signaling is transmitted by DCI (Downlink Control Information) format (Format) 5.

As an embodiment, the fourth signaling is transmitted in DCI format N1.

As an embodiment, the fourth signaling is transmitted in DCI format N2.

As an embodiment, the fourth signaling is transmitted using DCI format 6-0A.

As an embodiment, the fourth signaling is transmitted using DCI format 6-0B.

As an embodiment, the fourth signaling is transmitted using DCI format 6-1A.

As an embodiment, the fourth signaling is transmitted using DCI format 6-1B.

As an embodiment, the fourth signaling is transmitted using DCI format 6-2.

In an embodiment, the fourth information further includes a second indication, where the second indication is used to indicate an operation of the UE on the second time-frequency resource.

As a sub-embodiment of the embodiment, the second indication is “01”, and the UE receives the second wireless signal on the second time-frequency resource.

As a sub-embodiment of the embodiment, the second indication is “10”, and the UE sends the first signaling on the second time-frequency resource.

As a sub-embodiment of the embodiment, the second indication is “11”, and the UE sends the second wireless signal on the second time-frequency resource.

As a sub-embodiment of the embodiment, the first information is not less than a first threshold, the second indication is “1”, and the UE receives the first on the second time-frequency resource. Two wireless signals.

As a sub-embodiment of the embodiment, the first information is smaller than a first threshold, the second indication is “0”, and the UE sends the first signaling on a second time-frequency resource. .

As a sub-embodiment of the embodiment, the first information is smaller than a first threshold, the second indication is “1”, and the UE sends the second on the second time-frequency resource. wireless signal.

As an embodiment, the second wireless signal includes at least one of a {synchronization sequence, a discovery channel, a reference signal}.

As an embodiment, the second wireless signal comprises an RS.

As an embodiment, the second wireless signal includes at least one of {CRS, CSI-RS, NB-IoT-RS}.

As an embodiment, the second wireless signal includes at least one of {NB-PSS, NB-SSS}.

As a sub-embodiment of this embodiment, the NB-IoT-RS is used for the base station to a reference signal for narrowband communication between the first nodes.

As a sub-embodiment of this embodiment, the NB-IoT-RS is an NB-RS.

As a sub-embodiment of this embodiment, the NB-IoT-RS is used for at least demodulation of the NB-PBCH.

As an embodiment, the transmission channel of the second wireless signal is a UL-SCH.

As an embodiment, the second wireless signal includes a NB-PUSCH (Narrow Band-Physcial Uplink Shared Channel).

As an embodiment, the second wireless signal includes a NB-PDSCH (Narrow Band-Physcial Downlink Shared Channel).

As an embodiment, the second wireless signal includes a PSCCH (Physical Sidelink Control Channel).

As an embodiment, the second wireless signal includes a PSSCH (Physical Sidelink Shared Channel).

As an embodiment, the second wireless signal includes a PSBCH (Physical Sidelink Broadcast Channel).

As an embodiment, the second wireless signal includes a PSDCH (Physical Sidelink Discovery Channel) transmission.

As an embodiment, the second wireless signal includes a PSSS (Primary Sidelink Synchronisation Signal) transmission.

As an embodiment, the first signaling is transmitted by using SCI (Sidelink Control Information) format 0.

As an embodiment, the first signaling is transmitted in DCI format N0.

As an embodiment, the first signaling is transmitted in DCI format N1.

As an embodiment, the first signaling is transmitted in DCI format N2.

As an embodiment, the first signaling is transmitted using DCI format 6-0A.

As an embodiment, the first signaling is transmitted using DCI format 6-0B.

As an embodiment, the first signaling is transmitted using DCI format 6-1A.

As an embodiment, the first signaling is transmitted using DCI format 6-1B.

As an embodiment, the first signaling is transmitted using DCI format 6-2.

The present invention discloses a method in a UE used for relay communication, including, for example, Next steps:

- Step A. Send the first message.

- Step B. Send the first wireless signal.

Wherein the first wireless signal is used to determine the second information. The second information is used to indicate channel quality of the UE to the first wireless signal recipient. The first information is used to indicate the channel quality of the second node to the UE. The second node is a node other than the first wireless signal receiver.

As an embodiment, the second node is a network side device.

As an embodiment, the second node is a maintenance base station of a serving cell of the UE.

Specifically, according to an aspect of the invention, the method is characterized in that the step A further comprises the following steps:

- Step D0. Receive the fourth message. The fourth information is used to determine the second time-frequency resource.

Step D1. Receive a second wireless signal on the second time-frequency resource; or transmit the second wireless signal on the second time-frequency resource; or receive the first signaling on the second time-frequency resource.

The second wireless signal is used to determine a channel quality between the UE and the first wireless signal receiver. The first signaling includes scheduling information of the UE.

As a sub-embodiment of the embodiment, the second indication is “01”, and the UE sends the second wireless signal on the second time-frequency resource.

As a sub-embodiment of the embodiment, the second indication is “10”, and the UE receives the first signaling on the second time-frequency resource.

As a sub-embodiment of the embodiment, the second indication is “11”, and the UE receives the second wireless signal on the second time-frequency resource.

As a sub-embodiment of the embodiment, the first information is not less than a first threshold, the second indication is “1”, and the UE sends the first on the second time-frequency resource. Two wireless signals.

As a sub-embodiment of the embodiment, the first information is smaller than a first threshold, the second indication is “0”, and the UE receives the first signaling on a second time-frequency resource. .

As a sub-embodiment of the embodiment, the first information is smaller than a first threshold, the second indication is “1”, and the UE receives the second on the second time-frequency resource. No Line signal.

The invention discloses a method in a base station used for relay communication, which comprises the following steps:

- Step C. Receive the first indication.

The first indication is used to indicate that the first information and the second information satisfy an index corresponding to a given condition. The first information is used to indicate channel quality of the base station to the first node. The second information is used to indicate channel quality of the first node to a node other than the base station.

- Step C1. Receiving at least one of {first information, second information}.

Step C0. Transmitting third information, the third information being used to determine the first time-frequency resource.

As an embodiment, the step C0 further includes the following steps:

Step C10. Receive second signaling, the second signaling being used to request the first time-frequency resource.

- Step D0. Send a fourth message, the fourth information being used to determine the second time-frequency resource.

The invention discloses a user equipment used for relay communication, which comprises the following modules:

- a first receiving module: for receiving the first information.

a second receiving module: for receiving the first wireless signal.

a first processing module: for transmitting the first indication; and for receiving third information, the third information being used to determine the first time-frequency resource.

a second processing module: for receiving fourth information, the fourth information being used for determining the second time-frequency resource; and for transmitting the second wireless signal on the second time-frequency resource, or at the second time-frequency The second wireless signal is received on the resource, or the first signaling is sent on the second time-frequency resource.

Wherein the first wireless signal is used to determine the second information. The first information and the second information are used to determine the first indication. The sender of the first information is a first node, and the first information is used to indicate a channel quality of the second node to the first node. The second information is used to indicate channel quality between the first node and the UE. The first indication is used to indicate that the first information and the second information satisfy an index corresponding to a given condition. The first indication is transmitted in the first time-frequency resource. The first information and the second information are transmitted in the first time-frequency resource. The second wireless signal is used to determine a channel quality between the UE and the first node. The first signaling includes scheduling information of the first node.

In an embodiment, the first processing module is further configured to determine the second information according to the first wireless signal.

As an embodiment, the second processing module is configured to receive fourth information, where the fourth information is used to determine the second time-frequency resource; and to send the second wireless signal on the second time-frequency resource.

In one embodiment, the second processing module is configured to receive fourth information, where the fourth information is used to determine the second time-frequency resource; and to receive the second wireless signal on the second time-frequency resource.

As an embodiment, the second processing module is configured to receive fourth information, where the fourth information is used to determine the second time-frequency resource, and to send the first signaling on the second time-frequency resource.

- First sending module: for transmitting the first information.

- a second transmitting module: for transmitting the first wireless signal.

a third processing module: for receiving fourth information, the fourth information being used to determine the second time-frequency resource; and for receiving the second wireless signal on the second time-frequency resource, or for using the second time-frequency Transmitting a second wireless signal on the resource or for receiving the first signaling on the second time-frequency resource.

Wherein the first wireless signal is used to determine the second information. The second information is used to indicate channel quality of the UE to the first wireless signal recipient. The first information is used to indicate the channel quality of the second node to the UE. The second node is the first A node other than the recipient of the wireless signal. The second wireless signal is used to determine a channel quality between the UE and the first wireless signal recipient. The first signaling includes scheduling information of the UE.

In one embodiment, the third processing module is configured to receive fourth information, where the fourth information is used to determine the second time-frequency resource; and to receive the second wireless signal on the second time-frequency resource.

In one embodiment, the third processing module is configured to receive fourth information, where the fourth information is used to determine the second time-frequency resource; and to send the second wireless signal on the second time-frequency resource.

As an embodiment, the third processing module is configured to receive fourth information, where the fourth information is used to determine the second time-frequency resource; and to receive the first signaling on the second time-frequency resource.

The present invention discloses a base station device used for relay communication, which includes the following modules:

a fourth processing module: for receiving the first indication; and for transmitting the third information, the third information being used to determine the first time-frequency resource.

a third transmitting module: for transmitting fourth information, the fourth information being used for determining the second time-frequency resource.

The first indication is used to indicate that the first information and the second information satisfy an index corresponding to a given condition. The first information is used to indicate channel quality of the base station to the first node. The second information is used to indicate channel quality of the first node to a node other than the base station. The first indication is transmitted in the first time-frequency resource. The first information and the second information are transmitted in the first time-frequency resource.

In one embodiment, the fourth processing module is further configured to receive at least one of {the first information, the second information}.

As a sub-embodiment of the embodiment, the fourth processing module is further configured to receive the first information and the second information.

Compared with the prior art, the present invention has the following technical advantages:

Transmitting, by the first indication, a channel change situation of the Remote UE and the Relay UE, and a channel change of the Remote UE and the eNB to the eNB, and providing the eNB with a change. Following the Relay UE transmitting the Remote UE information, and changing the channel quality reference required by the Remote UE to receive the scheduled node, the performance loss and power consumption increase due to the mobility of the Remote UE and the Relay UE are better avoided.

The eNB is further configured to determine the location relationship between the Remote UE, the Relay UE and the base station by transmitting the first information and the second information to the eNB, and is more efficient and energy-efficient to provide services for the Remote UE.

The setting of the first threshold value and the second threshold value ensures that the relay UE sends the first indication only when the predefined condition is met, thereby reducing unnecessary uplink resource occupation and improving Overall system performance.

DRAWINGS

Other features, objects, and advantages of the present invention will become more apparent from the Detailed Description of Description

Figure 1 shows a flow diagram of a relay transmission in accordance with one embodiment of the present invention;

2 shows a flow chart of the second wireless signal transmission in accordance with one embodiment of the present invention;

FIG. 3 shows a flow chart of the second wireless signal transmission according to another embodiment of the present invention; FIG.

4 shows a flow chart of the first signaling transmission in accordance with one embodiment of the present invention;

FIG. 5 is a block diagram showing the structure of a processing device in a UE according to an embodiment of the present invention; FIG.

FIG. 6 is a block diagram showing the structure of a processing device in a UE according to another embodiment of the present invention; FIG.

Figure 7 is a block diagram showing the structure of a processing device in a base station according to an embodiment of the present invention;

detailed description

The technical solutions of the present invention will be further described in detail below with reference to the accompanying drawings. It should be noted that the features of the embodiments and the embodiments of the present application may be combined with each other without conflict.

Example 1

Embodiment 1 illustrates a flow chart of relay transmission, as shown in FIG. In FIG. 1, base station N1 is a maintenance base station of a serving cell of UE U2, and base station N1 is also a maintenance base station of a serving cell of UE U3, and the steps identified in block F0 are optional.

For the base station N1 , the third information is transmitted in step S10, the first indication is received in step S11, the first information and the second information are received in step S12, and the fourth information is transmitted in step S13.

For UE U2 , the first information is received in step S20, the first wireless signal is received in step S21, the third information is received in step S22, the first indication is sent in step S23, and the first information and the first information are transmitted in step S24. The second information receives the fourth information in step S25.

For UE U3 , the first information is transmitted in step S30, the first wireless signal is transmitted in step S31, and the fourth information is received in step S32.

As a sub-embodiment, the first information includes an RSRP.

As a sub-embodiment, the second information includes an RSRP.

As a sub-embodiment, the first wireless signal comprises an NB-IoT-RS.

As a sub-embodiment, the fourth information is transmitted using DCI format 5.

As a sub-embodiment, the fourth signaling is transmitted using DCI format 6-1A.

As a sub-embodiment, the fourth signaling is transmitted using DCI format 6-1B.

As a sub-embodiment, the fourth information occupies a bandwidth of no more than 1080 kHz.

Example 2

Embodiment 2 illustrates a flow chart of the second wireless signal transmission, as shown in FIG. In FIG. 2, the maintenance base stations of the serving cells of UE U2 and UE U3 are the same.

For UE U2 , a second wireless signal is transmitted on the second time-frequency resource in step S26.

For UE U3 , a second wireless signal is received on the second time-frequency resource in step S33.

As a sub-embodiment, the second wireless signal comprises an NB-IoT-RS.

Example 3

Embodiment 3 illustrates another flow chart of the second wireless signal transmission, as shown in FIG. In FIG. 3, the maintenance base stations of the serving cells of UE U2 and UE U3 are the same.

For UE U3 , a second wireless signal is transmitted on the second time-frequency resource in step S34.

For UE U2, receiving a second radio signal S27 on the frequency resource in a second step.

As a sub-embodiment, the second wireless signal comprises an NB-IoT-RS.

Example 4

Embodiment 4 illustrates a flow chart of the first signaling transmission, as shown in FIG. In FIG. 4, the maintenance base stations of the serving cells of UE U2 and UE U3 are the same.

For UE U2 , the first signaling is sent on the second time-frequency resource in step S28.

For UE U3 , the first signaling is received on the second time-frequency resource in step S35.

As a sub-embodiment, the transmission format adopted by the first signaling is SCI format 0.

Example 5

Embodiment 5 exemplifies a structural block diagram of a processing device in one UE, as shown in FIG. In FIG. 5, the UE processing apparatus 100 is mainly composed of a first receiving module 101, a second receiving module 102, a first processing module 103, and a second processing module 104.

a first receiving module 101: for receiving the first information.

a second receiving module 102: for receiving the first wireless signal.

a first processing module 103: for transmitting a first indication; and for receiving third information, the third information being used to determine a first time-frequency resource.

a second processing module 104: for receiving fourth information, the fourth information is used to determine the second time-frequency resource; and for transmitting the second wireless signal on the second time-frequency resource, or in the second time-frequency resource Receiving a second wireless signal or transmitting the first signaling on the second time-frequency resource.

As a sub-embodiment, the first processing module 103 is further configured to determine the second information according to the first wireless signal.

As a sub-embodiment, the first processing module 103 is further configured to send at least one of {the first information, the second information}.

As a sub-embodiment, the second processing module 104 is configured to receive fourth information, where the fourth information is used to determine the second time-frequency resource, and to send the second wireless signal on the second time-frequency resource.

As a sub-embodiment, the second processing module 104 is configured to receive fourth information, where the fourth information is used to determine the second time-frequency resource, and to receive the second wireless signal on the second time-frequency resource.

As a sub-embodiment, the second processing module 104 is configured to receive fourth information, where the fourth information is used to determine the second time-frequency resource, and to send the first signaling on the second time-frequency resource.

Example 6

Embodiment 6 exemplifies a structural block diagram of a processing device in another UE, as shown in FIG. In FIG. 6, the UE processing apparatus 200 is mainly composed of a first sending module 201, a second sending module 202, and a third processing module 203.

- a first sending module 201: for transmitting the first information.

a second transmitting module 202: for transmitting the first wireless signal.

a third processing module 203: for receiving fourth information, the fourth information being used for determining the second time-frequency resource; and for receiving the second wireless signal on the second time-frequency resource, or for the second time Transmitting a second wireless signal on the frequency resource or for receiving the first signaling on the second time-frequency resource.

Wherein the first wireless signal is used to determine the second information. The second information is used to indicate channel quality of the UE to the first wireless signal recipient. The first information is used to indicate the channel quality of the second node to the UE. The second node is a node other than the recipient of the first wireless signal. The second wireless signal is used to determine a channel quality between the UE and the first wireless signal recipient. The first signaling includes scheduling information of the UE.

As a sub-embodiment, the third processing module 203 is configured to receive fourth information, where the fourth information is used to determine the second time-frequency resource, and to receive the second wireless signal on the second time-frequency resource.

As a sub-embodiment, the third processing module 203 is configured to receive fourth information, where the fourth information is used to determine the second time-frequency resource, and to send the second wireless signal on the second time-frequency resource.

As a sub-embodiment, the third processing module 203 is configured to receive fourth information, where the fourth information is used to determine the second time-frequency resource, and to receive the first signaling on the second time-frequency resource.

Example 7

Embodiment 7 exemplifies a structural block diagram of a processing device in a base station device, as shown in FIG. Show. In FIG. 7, the base station device processing apparatus 300 is mainly composed of a fourth processing module 301 and a third transmitting module 302.

The fourth processing module 301 is configured to receive the first indication and send the third information, where the third information is used to determine the first time-frequency resource.

The third sending module 302 is configured to send fourth information, where the fourth information is used to determine the second time-frequency resource.

As a sub-embodiment, the fourth processing module 301 is further configured to receive at least one of {the first information, the second information}.

As a subsidiary embodiment of the sub-embodiment, the fourth processing module 301 is further configured to receive the first information and the second information.

One of ordinary skill in the art can appreciate that all or part of the above steps can be completed by a program to instruct related hardware, 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. Alternatively, all or part of the steps of the above embodiments may also be implemented using one or more integrated circuits. Correspondingly, each module unit in the above embodiment may be implemented in hardware form or in the form of a software function module. The application is not limited to any specific combination of software and hardware. The UE and the terminal in the present invention include but are not limited to RFID, IoT terminal equipment, MTC (Machine Type Communication) terminal, vehicle communication device, wireless sensor, network card, mobile phone, tablet computer, notebook and other wireless communication devices. . The base station, the base station device, and the network side device in the present invention include, but are not limited to, a macro communication base station, a micro cell base station, a home base station, a relay base station, and the like.

The above is only the preferred embodiment of the present invention and is not intended to limit the scope of the present invention. All modifications, equivalents, improvements, etc., made within the spirit and scope of the invention are intended to be included within the scope of the invention.

Claims

A method in a UE used for relay communication, comprising the steps of:

- Step A. Receiving the first message

- Step B. Receiving the first wireless signal

- Step C. Send the first indication

Wherein the first wireless signal is used to determine the second information. The first information and the second information are used to determine the first indication. The sender of the first information is a first node, and the first information is used to indicate a channel quality of the second node to the first node. The second information is used to indicate channel quality between the first node and the UE. The first indication is used to indicate that the first information and the second information satisfy an index corresponding to a given condition.
The method of claim 1 wherein said step C further comprises the steps of:

- Step C1. Send at least one of {first information, second information}.
The method according to claim 1, wherein the step C further comprises the following steps:

Step C0. Receive third information, the third information being used to determine the first time-frequency resource.

The first indication is transmitted in the first time-frequency resource. The first information and the second information are transmitted in the first time-frequency resource.
The method according to claim 1, 2, 3, wherein the step C further comprises the following steps:

Step D0. Receive fourth information, the fourth information being used to determine the second time-frequency resource.

Step D1. Sending a second wireless signal on the second time-frequency resource, or receiving the second wireless signal on the second time-frequency resource, or transmitting the first signaling on the second time-frequency resource.

The second wireless signal is used to determine a channel quality between the UE and the first node. The first signaling includes scheduling information of the first node.
A method in a UE used for relay communication, comprising the steps of:

- Step A. Send the first message.

- Step B. Send the first wireless signal.

Wherein the first wireless signal is used to determine the second information. The second information is used to indicate channel quality of the UE to the first wireless signal recipient. The first information is used to indicate the channel quality of the second node to the UE. The second node is a node other than the first wireless signal receiver.
The method according to claim 5, wherein said step A further comprises the steps of:

- Step D0. Receive the fourth message. The fourth information is used to determine the second time-frequency resource.

Step D1. Receive a second wireless signal on the second time-frequency resource; or transmit the second wireless signal on the second time-frequency resource; or receive the first signaling on the second time-frequency resource.

The second wireless signal is used to determine a channel quality between the UE and the first wireless signal receiver. The first signaling includes scheduling information of the UE.
A method in a base station used for relay communication, comprising the steps of:

- Step C. Receive the first indication.

The first indication is used to indicate that the first information and the second information satisfy an index corresponding to a given condition. The first information is used to indicate channel quality of the base station to the first node. The second information is used to indicate channel quality of the first node to a node other than the base station.
The method according to claim 7, wherein said step C further comprises the following steps:

- Step C1. Receiving at least one of {first information, second information}.
The method according to claim 7, wherein the step C further comprises the following steps:

Step C0. Transmitting third information, the third information being used to determine the first time-frequency resource.

The first indication is transmitted in the first time-frequency resource. The first information and the second information are transmitted in the first time-frequency resource.
The method according to any of claims 7-9, wherein the step C further comprises the following steps:

- Step D0. Send a fourth message, the fourth information being used to determine the second time-frequency resource.
A user equipment used for relay communication, including the following modules:

- a first receiving module: for receiving the first information.

a second receiving module: for receiving the first wireless signal.

a first processing module: for transmitting the first indication; and for receiving third information, the third information being used to determine the first time-frequency resource.

a second processing module: for receiving fourth information, the fourth information being used to determine the second time-frequency resource; and for transmitting the second wireless signal on the second time-frequency resource, or for using the second time-frequency The second wireless signal is received on the resource or used to send the first signaling on the second time-frequency resource.

Wherein the first wireless signal is used to determine the second information. The first information and the second information are used to determine the first indication. The sender of the first information is a first node, and the first information is used to indicate a channel quality of the second node to the first node. The second information is used And indicating the channel quality between the first node and the UE. The first indication is used to indicate that the first information and the second information satisfy an index corresponding to a given condition. The first indication is transmitted in the first time-frequency resource. The first information and the second information are transmitted in the first time-frequency resource. The second wireless signal is used to determine a channel quality between the UE and the first node. The first signaling includes scheduling information of the first node.
A user equipment used for relay communication, including the following modules:

- First sending module: for transmitting the first information.

- a second transmitting module: for transmitting the first wireless signal.

a third processing module: for receiving fourth information, the fourth information being used to determine the second time-frequency resource; and for receiving the second wireless signal on the second time-frequency resource, or for using the second time-frequency Transmitting a second wireless signal on the resource or for receiving the first signaling on the second time-frequency resource.

Wherein the first wireless signal is used to determine the second information. The second information is used to indicate channel quality of the UE to the first wireless signal recipient. The first information is used to indicate the channel quality of the second node to the UE. The second node is a node other than the recipient of the first wireless signal. The second wireless signal is used to determine a channel quality between the UE and the first wireless signal recipient. The first signaling includes scheduling information of the UE.
A base station device used for relay communication, which includes the following modules:

a fourth processing module: for receiving the first indication and transmitting the third information, the third information being used to determine the first time-frequency resource.

a third transmitting module: for transmitting fourth information, the fourth information being used for determining the second time-frequency resource.

The first indication is used to indicate that the first information and the second information satisfy an index corresponding to a given condition. The first information is used to indicate channel quality of the base station to the first node. The second information is used to indicate channel quality of the first node to a node other than the base station. The first indication is transmitted in the first time-frequency resource. The first information and the second information are transmitted in the first time-frequency resource.