# US 2021/0083802 A1 · Techniques for bi-direction preemption indication transmissions > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0083802 A1 - Document ID: US20210083802A1 - Status: Published application - Kind: A1 - Application number: 16/998,775 - Filed: 2020-08-20 - Published: 2021-03-18 - Earliest claimed: 2019-09-13 - Assignees: QUALCOMM Incorporated - Applicants: QUALCOMM Incorporated - Inventors: Yan ZHOU; Tao LUO - Web page: https://patentgrep.com/patent/US20210083802A1 ## CPC - H04L 1/0041: {Arrangements at the transmitter end} - H04L 1/0069: {Puncturing patterns} - H04L 1/0045: {Arrangements at the receiver end} - H04L 1/0067: {Rate matching (H04L1/0013 and H04L1/08 take precedence)} - H04L 5/0094: {Indication of how sub-channels of the path are allocated} - H04L 5/10: with dynamo-electric generation of carriers; with mechanical filters or demodulators - H04L 5/14: Two-way operation using the same type of signal, i.e. duplex - H04L 5/1423: {for simultaneous baseband signals} - H04L 47/245: {using preemption} - H04L 47/76: using dynamic resource allocation, e.g. in-call renegotiation requested by the user or requested by the network in response to changing network conditions - H04W 24/08: Testing, {supervising or monitoring} using real traffic - H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal - H04W 76/11: Allocation or use of connection identifiers - H04W 76/27: Transitions between radio resource control [RRC] states - H04W 80/02: Data link layer protocols - H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals} - H04L 47/805: {QOS or priority aware} - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract Aspects described herein relate to bi-direction preemption indication transmissions. In one example, a node such as an integrated access and backhaul (IAB) node may determine that a set of one or more resources are preempted for use for both an uplink transmission and a downlink transmission, and transmit, to a user equipment (UE), the bi-direction preemption indication indicating that the set of one or more resources are preempted for use for both of the uplink transmission and the downlink transmission. In another example, a UE may receive a bi-direction preemption indication indicating that a set of one or more resources are preempted for use for both an uplink transmission and a downlink transmission, and perform rate matching for both of the uplink transmission and downlink transmission based on the set of one or more resources indicated by the bi-direction preemption indication. ## Claims ### Claim 1 A method of wireless communications by a user equipment (UE), comprising: receiving a bi-direction preemption indication indicating that a set of one or more resources are preempted for use for both an uplink transmission and a downlink transmission; and performing rate matching for both of the uplink transmission and the downlink transmission based on the set of one or more resources indicated by the bi-direction preemption indication. ### Claim 2 (depends on 1) The method of claim 1, wherein the rate matching for the downlink transmission includes demodulating and decoding of information bits on resources not overlapping with the set of one or more resources. ### Claim 3 (depends on 1) The method of claim 1, wherein the rate matching for the uplink transmission includes modulating and encoding of information bits on resources not overlapping with the set of one or more resources. ### Claim 4 (depends on 1) The method of claim 1, wherein receiving the bi-direction preemption indication includes receiving a group common physical downlink control channel (GC-PDCCH) scrambled by a unique radio network temporary identifier (RNTI) associated with the bi-direction preemption indication. ### Claim 5 (depends on 4) The method of claim 4, wherein the bi-direction preemption indication is one of a plurality of different bi-direction preemption indications for a plurality of cells carried by the GC-PDCCH. ### Claim 6 (depends on 4) The method of claim 4, wherein a monitoring periodicity of the GC-PDCCH is configurable. ### Claim 7 (depends on 1) The method of claim 1, wherein receiving the bi-direction preemption indication includes receiving a group common physical downlink control channel (GC-PDCCH) including a unique bit that identifies each preemption indication carried by the GC-PDCCH as a bi-direction preemption indication. ### Claim 8 (depends on 1) The method of claim 1, wherein receiving the bi-direction preemption indication includes receiving the bi-direction preemption indication having a unique bit that identifies the bi-direction preemption indication. ### Claim 9 (depends on 1) The method of claim 1, wherein receiving the bi-direction preemption indication includes: receiving on a dedicated control resource set associated with the bi-direction preemption indication within a search space, or receiving on a control resource set within a dedicated search space associated with the bi-direction preemption indication. ### Claim 10 (depends on 1) The method of claim 1, wherein the bi-direction preemption indication is received during a current monitoring occasion, and wherein the set of one or more resources is between the current monitoring occasion and a next monitoring occasion. ### Claim 11 (depends on 1) The method of claim 1, further comprising: determining that a current mode of communication is a full duplex mode; identifying that the bi-direction preemption indication comprises an uplink preemption indication or a downlink preemption indication; and determining that the bi-direction preemption indication indicates that the set of one or more resources are preempted for use for both of the uplink transmission and the downlink transmission in response to determining the current mode is the full duplex mode. ### Claim 12 (depends on 11) The method of claim 11, further comprising: receiving a full duplex indication via at least one of: a radio resource connection (RRC) message, a media access control (MAC) control element (CE), or downlink control information (DCI), wherein determining that the current mode of communication is the full duplex mode based on the full duplex indication. ### Claim 13 (depends on 12) The method of claim 12, further comprising: transmitting a full duplex capability indication that identifies support for the full duplex mode; and wherein receiving the full duplex indication is in response to the transmitting of the full duplex capability indication. ### Claim 14 (depends on 11) The method of claim 11, further comprising: receiving a preemption indication re-interpretation indicator indicating to re-interpret the uplink preemption indication and the downlink preemption indication as the bi-direction preemption indication; and wherein determining that the bi-direction preemption indication indicates that the set of one or more resources are preempted for use for both of the uplink transmission and the downlink transmission further in response to the receiving of the preemption indication re-interpretation indicator. ### Claim 15 A method of wireless communications by a node, comprising: determining that a set of one or more resources are preempted for use for both an uplink transmission and a downlink transmission; and transmitting, to a user equipment (UE), a bi-direction preemption indication indicating that the set of one or more resources are preempted for use for both of the uplink transmission and the downlink transmission. ### Claim 16 (depends on 15) The method of claim 15, wherein the bi-direction preemption indication triggers rate matching for both of the uplink transmission and downlink transmission based on the set of one or more resources. ### Claim 17 (depends on 15) The method of claim 15, wherein transmitting the preemption indication includes transmitting a group common physical downlink control channel (GC-PDCCH) scrambled by a unique radio network temporary identifier (RNTI) associated with the bi-direction preemption indication, and wherein a monitoring periodicity of the GC-PDCCH is configurable. ### Claim 18 (depends on 17) The method of claim 17, wherein the bi-direction preemption indication is one of a plurality of different bi-direction preemption indications for a plurality of cells carried by the GC-PDCCH. ### Claim 19 (depends on 15) The method of claim 15, wherein transmitting the bi-direction preemption indication includes transmitting a group common physical downlink control channel (GC-PDCCH) including a unique bit that identifies each preemption indication carried by the GC-PDCCH as a bi-direction preemption indication. ### Claim 20 (depends on 15) The method of claim 15, wherein transmitting the bi-direction preemption indication includes transmitting the bi-direction preemption indication having a unique bit that identifies the bi-direction preemption indication. ### Claim 21 (depends on 15) The method of claim 15, wherein transmitting the bi-direction preemption indication includes: transmitting on a dedicated control resource set associated with the bi-direction preemption indication within a search space, or transmitting on a control resource set within a dedicated search space associated with the bi-direction preemption indication. ### Claim 22 (depends on 15) The method of claim 15, wherein transmitting the bi-direction preemption indication includes transmitting during a current monitoring occasion, and wherein the set of one or more resources is between the current monitoring occasion and a next monitoring occasion. ### Claim 23 (depends on 15) The method of claim 15, further comprising: transmitting a full duplex indication via at least one of: a radio resource connection (RRC) message, a media access control (MAC) control element (CE), or downlink control information (DCI), and receiving a full duplex capability indication that identifies support for a full duplex mode. ### Claim 24 (depends on 15) The method of claim 15, further comprising transmitting a preemption indication re-interpretation indicator indicating to re-interpret the uplink preemption indication and the downlink preemption indication as a bi-direction preemption indication. ### Claim 25 An apparatus for wireless communication, comprising: a transceiver; a memory configured to store instructions; and at least one processor communicatively coupled with the transceiver and the memory, wherein the at least one processor is configured to: receive a bi-direction preemption indication indicating that a set of one or more resources are preempted for use for both an uplink transmission and a downlink transmission; and perform rate matching for both of the uplink transmission and the downlink transmission based on the set of one or more resources indicated by the bi-direction preemption indication. ### Claim 26 (depends on 25) The apparatus of claim 25, wherein the rate matching for the downlink transmission includes demodulating and decoding of information bits on resources not overlapping with the set of one or more resources. ### Claim 27 (depends on 25) The apparatus of claim 25, wherein to receive the bi-direction preemption indication, the at least one processor is further configured to receive a group common physical downlink control channel (GC-PDCCH) scrambled by a unique radio network temporary identifier (RNTI) associated with the bi-direction preemption indication. ### Claim 28 An apparatus for wireless communication, comprising: a transceiver; a memory configured to store instructions; and at least one processor communicatively coupled with the transceiver and the memory, wherein the at least one processor is configured to: determine that a set of one or more resources are preempted for use for both an uplink transmission and a downlink transmission; and transmit, to a user equipment (UE), a bi-direction preemption indication indicating that the set of one or more resources are preempted for use for both of the uplink transmission and the downlink transmission. ### Claim 29 (depends on 28) The apparatus of claim 28, wherein the bi-direction preemption indication triggers rate matching for both of the uplink transmission and downlink transmission based on the set of one or more resources. ### Claim 30 (depends on 28) The apparatus of claim 28, wherein to transmit the preemption indication, the at least one processor is further configured to transmit a group common physical downlink control channel (GC-PDCCH) scrambled by a unique radio network temporary identifier (RNTI) associated with the bi-direction preemption indication, and wherein a monitoring periodicity of the GC-PDCCH is configurable.