US-12628126-B2 - Method and device in nodes used for wireless communication

US12628126B2US 12628126 B2US12628126 B2US 12628126B2US-12628126-B2

Abstract

Disclosure provides a method and device in nodes used for wireless communications. A node first transmits a first signaling, the first signaling being used to determine a first time-frequency resource pool; and then monitors a second signaling in the first time-frequency resource pool; the first time-frequency resource pool comprises a first time-frequency resource set and a second time-frequency resource set, and time-frequency resources occupied by the second signaling belong to the first time-frequency resource set or the second time-frequency resource set; the first signaling is used to trigger the second signaling; a first ID is used to generate the second signaling, a first information block is used to generate the second signaling, the first information block is used to determine at least one of a candidate time-frequency resource set or a candidate reference signal resource set. The application improves the interaction mode under full duplex, thereby optimizing the system performance.

Inventors

Qi Jiang
Xiaobo Zhang

Assignees

Apogee 5G Global, LLC

Dates

Publication Date: 20260512
Application Date: 20221110
Priority Date: 20211112

Claims (20)

1 . A first node for wireless communications, the first node comprising: a transceiver; and a processor, wherein the transceiver and the processor are configured to: transmit a first signaling, wherein the first signaling being used to determine a first time-frequency resource pool; and monitor a second signaling in the first time-frequency resource pool, wherein the first time-frequency resource pool comprises a first time-frequency resource set and a second time-frequency resource set, and time-frequency resources occupied by the second signaling belong to the first time-frequency resource set or the second time-frequency resource set, and wherein the first signaling is used to trigger the second signaling, and wherein a first identity (ID) is used to generate the second signaling, a first information block is used to generate the second signaling, the first information block is used to determine at least one of a candidate time-frequency resource set or a candidate reference signal resource set, and wherein whether the second signaling comprises the first ID is related to whether the first signaling comprises the first ID, and wherein on a condition that the first signaling comprises the first ID, the second signaling does not comprise the first ID, and wherein on a condition that the first signaling does not comprise the first ID, the second signaling comprises the first ID, and wherein the first ID is a non-negative integer.
2 . The first node according to claim 1 , wherein on a condition that the first signaling comprises the first ID, time-frequency resources occupied by the second signaling belong to the first time-frequency resource set, and wherein on a condition that the first signaling does not comprise the first ID, time-frequency resources occupied by the second signaling belong to the second time-frequency resource set.
3 . The first node according to claim 1 , wherein the first signaling and the second signaling are respectively transmitted via different interfaces.
4 . The first node according to claim 1 , wherein on a condition that the first signaling comprises the first ID, a slot format corresponding to the first time-frequency resource set for the first node is uplink, and wherein on a condition the first signaling does not comprise the first ID, a slot format corresponding to the second time-frequency resource set for the first node is flexible.
5 . The first node according to claim 1 , wherein the first ID is a physical cell ID, or the first ID is a Radio Network Temporary Identifier (RNTI), or the first ID is related to both a physical cell ID and an RNTI.
6 . The first node according to claim 1 , wherein the transceiver and the processor are further configured to: receives a third signaling, wherein the third signaling is used to indicate a first time-frequency resource block, and the second signaling occupies the first time-frequency resource block, and wherein a CRC comprised in the third signaling is scrambled through the first ID, and wherein the third signaling is a physical-layer dynamic signaling.
7 . The first node according to claim 1 , wherein a timing for transmitting the second signaling is a target timing, and wherein a downlink timing of a transmitter of the second signaling is a first timing, and an uplink receiving timing for the first node is a second timing, and wherein on a condition that the first signaling does not comprise the first ID, the target timing is the first timing, and wherein on a condition that the first signaling comprises the first ID, the target timing is the second timing.
8 . The first node according to claim 1 , wherein the first transceiver and the processor are further configured to: operate a first signal, and wherein there exists an overlapping in time-domain resources occupied by the first signal and time-domain resources occupied by the second signaling, and wherein the second signaling and the first signal are respectively transmitted via different interfaces, and wherein the operating action is transmitting, or the operating action is receiving.
9 . The first node according to claim 1 , wherein the meaning of the phrase of the first signaling being used to determine a first time-frequency resource pool comprises: a transmitter of the second signaling transmits a backhaul signaling to the first node, the backhaul signaling is used to indicate the first time-frequency resource pool, and the first signaling is used to determine that the backhaul signaling is correctly received by the first node.
10 . The first node according to claim 1 , wherein the candidate time-frequency resource set comprises more than one multicarrier symbol in time domain, and the candidate time-frequency resource set comprises frequency-domain resources corresponding to at least one RB in frequency domain, and wherein the candidate time-frequency resource set is used for at least one of the following: coordinated scheduling of the first node and a transmitter of the second signaling, joint transmission of the first node and a transmitter of the second signaling, dynamic scheduling of the first node, and dynamic scheduling of a transmitter of the second signaling.
11 . The first node according to claim 1 , wherein the candidate reference signal resource set comprises K 1 reference signal resource, K 1 being a positive integer, and wherein any of the K 1 reference signal resource corresponds to a TCI-State.
12 . A second node for wireless communications, the second node comprising: a transceiver; and a processor, wherein the transceiver and the processor are configured to: receive a first signaling, the first signaling being used to determine a first time-frequency resource pool, and transmit a second signaling in the first time-frequency resource pool, wherein the first time-frequency resource pool comprises a first time-frequency resource set and a second time-frequency resource set, and time-frequency resources occupied by the second signaling belong to the first time-frequency resource set or the second time-frequency resource set, and wherein the first signaling is used to trigger the second signaling, and wherein a first ID is used to generate the second signaling, a first information block is used to generate the second signaling, the first information block is used to determine at least one of a candidate time-frequency resource set or a candidate reference signal resource set, and wherein whether the second signaling comprises the first ID is related to whether the first signaling comprises the first ID, and wherein on a condition that the first signaling comprises the first ID, the second signaling does not comprise the first ID, wherein on a condition that the first signaling does not comprise the first ID, the second signaling comprises the first ID, and wherein the first ID is a non-negative integer.
13 . The second node according to claim 12 , wherein when on a condition that the first signaling comprises the first ID, time-frequency resources occupied by the second signaling belong to the first time-frequency resource set, and wherein on a condition the first signaling does not comprise the first ID, time-frequency resources occupied by the second signaling belong to the second time-frequency resource set.
14 . The second node according to claim 12 , wherein the first signaling and the second signaling are respectively transmitted via different interfaces.
15 . The second node according to claim 12 , wherein on a condition that the first signaling comprises the first ID, a slot format corresponding to the first time-frequency resource set for a transmitter of the first signaling is uplink, and wherein on a condition that the first signaling does not comprise the first ID, a slot format corresponding to the second time-frequency resource set for a transmitter of the first signaling is flexible.
16 . The second node according to claim 12 , wherein the first ID is a physical cell ID, or the first ID is an RNTI, or the first ID is related to both a physical cell ID and an RNTI.
17 . The second node according to claim 12 , wherein the transceiver and the processor are further configured to: transmits a third signaling, wherein the third signaling is used to indicate a first time-frequency resource block, and the second signaling occupies the first time-frequency resource block, and wherein a CRC comprised in the third signaling is scrambled through the first ID; the third signaling is a physical-layer dynamic signaling.
18 . The second node according to claim 12 , wherein a timing for transmitting the second signaling is a target timing, and wherein a downlink timing of the second node is a first timing, and an uplink reception timing of a transmitter of the first signaling is a second timing; and wherein on a condition that the first signaling does not comprise the first ID, the target timing is the first timing, and wherein on a condition that the first signaling comprises the first ID, the target timing is the second timing.
19 . The second node according to claim 12 , wherein the transceiver and the processor are further configured to: execute a first signal, and wherein there exists an overlapping in time-domain resources occupied by the first signal and time-domain resources occupied by the second signaling, and wherein the second signaling and the first signal are respectively transmitted via different interfaces; the executing action is receiving, or, the executing action is transmitting.
20 . A method in a first node for wireless communications, comprising: transmitting a first signaling, the first signaling being used to determine a first time-frequency resource pool; and monitoring a second signaling in the first time-frequency resource pool;, wherein the first time-frequency resource pool comprises a first time-frequency resource set and a second time-frequency resource set, and time-frequency resources occupied by the second signaling belong to the first time-frequency resource set or the second time-frequency resource set, and wherein the first signaling is used to trigger the second signaling, and wherein a first ID is used to generate the second signaling, a first information block is used to generate the second signaling, the first information block is used to determine at least one of a candidate time-frequency resource set or a candidate reference signal resource set, and wherein whether the second signaling comprises the first ID is related to whether the first signaling comprises the first ID, wherein on a condition that the first signaling comprises the first ID, the second signaling does not comprise the first ID, and wherein on a condition that the first signaling does not comprise the first ID, the second signaling comprises the first ID; the first ID is a non-negative integer.

Description

CROSS REFERENCE TO RELATED APPLICATIONS This application claims the priority benefit of Chinese Patent Application No. 202111336588.4, filed on Nov. 12, 2021, the full disclosure of which is incorporated herein by reference. BACKGROUND Technical Field The present application relates to transmission methods and devices in wireless communication systems, and in particular to a transmission scheme and device related to flexible transmission direction configuration in wireless communications. Background Application scenarios of future wireless communication systems are becoming increasingly diversified, and different application scenarios have different performance demands on systems. In order to meet different performance requirements of various application scenarios, it was decided at 3rd Generation Partner Project (3GPP) Radio Access Network (RAN) #72th plenary that a study on New Radio (NR), or what is called Fifth Generation (5G) shall be conducted. The work item of NR was approved at 3GPP RAN #75th plenary to standardize NR. It was decided to start a Study Item (SI) and a Work Item (WI) of NR Rel-17 at 3GPP RAN #86th plenary, and it is anticipated that an SI and WI of NR Rel-18 will be approved at 3GPP RAN #94eth plenary. In NR technology, enhanced Mobile BroadBand (eMBB), Ultra-reliable and Low Latency Communications (URLLC), and massive Machine Type Communications (mMTC) are three main application scenarios. In NR Rel-16 system, the main difference between frame structures of Long-Term Evolution (LTE) and LTE-A is that symbols in a slot can be configured as Downlink, Uplink and Flexible, where for symbols configured as “Flexible”, the terminal will receive Downlink on the symbol, and the symbol can also be used for Uplink scheduling. The above method is more flexible than LTE and LTE-A systems. SUMMARY In the existing NR system, the base stations can interact through an Xn Interface. In the future Full Duplex system, considering the advantages of Spatial Division Multiplexing (SDM) and the use of massive antennas, the base stations can interact through an air interface to improve the timeliness and efficiency of interaction, so as to improve the performance gains brought by coordinated scheduling and joint transmission. The application discloses a solution to the problem incurred by the interaction between base stations through an air interface in a full duplex scenario. It should be noted that in the description of the application, flexible duplex mode is only used as a typical application scenario or example; the application is also applicable to other scenarios confronting similar problems (such as scenarios where link direction changes, or other scenarios supporting multi-level configuration of the transmission direction, or a base station or a UE with stronger capabilities, such as scenarios supporting full duplex on a same frequency, or for different application scenarios, such as eMBB and URLLC), where similar technical effects can be achieved. Additionally, the adoption of a unified solution for various scenarios, including but not limited to scenarios of eMBB and URLLC, contributes to the reduction of hardware complexity and costs. If no conflict is incurred, embodiments in a first node in the present application and the characteristics of the embodiments are also applicable to a second node, and vice versa. Particularly, for interpretations of the terminology, nouns, functions and variants (if not specified) in the present application, refer to definitions given in Technical Specification (TS)36 series, TS38 series and TS37 series of 3GPP specifications. The present application provides a method in a first node for wireless communications, comprising: transmitting a first signaling, the first signaling being used to determine a first time-frequency resource pool; and monitoring a second signaling in the first time-frequency resource pool; herein, the first time-frequency resource pool comprises a first time-frequency resource set and a second time-frequency resource set, and time-frequency resources occupied by the second signaling belong to the first time-frequency resource set or the second time-frequency resource set; the first signaling is used to trigger the second signaling; a first identity (ID) is used to generate the second signaling, a first information block is used to generate the second signaling, the first information block is used to determine at least one of a candidate time-frequency resource set or a candidate reference signal resource set; whether the second signaling comprises the first ID is related to whether the first signaling comprises the first ID; when the first signaling comprises the first ID, the second signaling does not comprise the first ID; when the first signaling does not comprise the first ID, the second signaling comprises the first ID; the first ID is a non-negative integer. In one embodiment, one technical feature of the above method is in: while the fle