JP-7856669-B2 - Techniques for control channel iterations for cross-carrier scheduling

JP7856669B2JP 7856669 B2JP7856669 B2JP 7856669B2JP-7856669-B2

Inventors

モスタファ・コシュネヴィサン
シャオシア・ジャン
ジン・スン

Assignees

クアルコム，インコーポレイテッド

Dates

Publication Date: 20260511
Application Date: 20220125
Priority Date: 20220124

Claims (20)

A device for wireless communication in user equipment (UE), Processor and The memory coupled to the aforementioned processor, The device comprises instructions stored in the memory, and the instructions are transmitted to the device. Receiving control signaling from a base station to identify a scheduling configuration indicating a first search space set and a second search space set of a scheduling component carrier for scheduling communication on a scheduled component carrier different from the scheduling component carrier, Identifying a search space set linking configuration for multiple search space sets of the scheduled component carrier, based at least in part on the scheduling configuration in the received control signaling, Identifying, at least in part, the sets of decryption candidates in the first and second search space sets of the scheduling component carrier, which are allocated for cross-carrier scheduling of the scheduled component carrier, based on the identified search space set linking configuration, Identifying that at least two of the plurality of search space sets of the scheduled component carrier are linked for control channel iterations, at least in part on the fact that at least two of the search space sets of the scheduled component carrier are associated with first and second search space set indices which are the same as the first and second search space set indices of the first and second search space sets of the scheduling component carrier, respectively, Receiving from the base station and within at least one decoding candidate from the set of identified decoding candidates via the scheduling component carrier, which schedules communication between the base station and the UE via the scheduled component carrier, A device that can be operated by the processor to cause the device to transmit or receive the communication with the base station via the scheduled component carrier, at least in part, based on the at least one control message.
The set of decoding candidates includes at least one decoding candidate, and the instruction is given to the device, The apparatus according to claim 1, wherein the processor can further cause the pair of decoding candidates to identify that the pair of decoding candidates is linked for control channel iterations, at least in part on the basis that the pair of decoding candidates corresponds to the same carrier indicator field, the same candidate index, and the same aggregation level.
The command for receiving the control signaling that identifies the scheduling configuration is transmitted to the device. The apparatus according to claim 1, wherein the processor is capable of causing the apparatus to receive the control signaling indicating a first search space set index associated with the first search space set of the scheduling component carrier and a second search space set index associated with the second search space set of the scheduling component carrier.
The apparatus according to claim 3, wherein a third and a fourth search space set among the plurality of search space sets of the scheduled component carrier are associated with the first and second search space set indices, respectively, and the search space set linking configuration indicates, at least in part, that the third and fourth search space sets are linked or unlinked for control channel iterations, based on the fact that the first and second search space sets are linked for control channel iterations.
The instruction for identifying the search space set linking configuration is given to the device, The apparatus according to claim 1, wherein the processor is capable of causing the base station to receive additional control signaling indicating the search space set linking configuration.
The instruction for identifying the search space set linking configuration is given to the device, The apparatus according to claim 1, wherein the processor is capable of causing the processor to identify, at least two of the plurality of search space sets of the scheduled component carrier are linked for control channel iterations, based at least in part on the scheduling configuration, that the first search space set and the second search space set of the scheduling component carrier are linked for control channel iterations.
The command to the device, The apparatus according to claim 6, further operable by the processor to cause the at least two search space sets to be linked for control channel iterations to monitor a first decoding candidate in the first search space set for the iterations of the control message, and a second decoding candidate in the second search space set, linked to the first decoding candidate, for the iterations of the control message.
The command to the device, The apparatus according to claim 6, further operable by the processor to cause it to identify that a third set of monitoring occasions in the first search space set of the scheduling component carrier and a fourth set of monitoring occasions in the second search space set of the scheduling component carrier are not linked for control channel iterations for in-carrier scheduling.
The instruction for identifying the search space set linking configuration is given to the device, The apparatus according to claim 1, wherein the processor is capable of causing at least two of the plurality of search space sets of the scheduled component carrier to identify that they are not linked for control channel iterations.
The command to the device, The apparatus according to claim 9, wherein the processor can further perform to cause the processor to monitor a first decryption candidate in the first search space set for the control message and a second decryption candidate in the second search space set for a second control message different from the control message, at least in part on identifying that at least two of the plurality of search space sets of the scheduled component carrier are not linked for control channel iterations.
The command to the device, The apparatus according to claim 9, further operable by the processor to cause the search space set linking configuration to identify, at least in part, that a first decoding candidate of the first search space set is not linked to a second decoding candidate of the second search space set for control channel iterations for cross-carrier scheduling on the scheduled component carrier.
The command to the device, The apparatus according to claim 11, further operable by the processor to cause the search space set linking configuration to identify, at least in part, that a third decoding candidate of the first search space set is linked to a fourth decoding candidate of the second search space set for control channel iterations for carrier in-carrier scheduling on the scheduling component carrier.
The command to the device, The apparatus according to claim 1, further operable by the processor to cause it to receive the control signaling indicating a first set of one or more monitoring occasions for the first set of search space sets and a second set of one or more monitoring occasions for the second set of search space sets.
The command for receiving the control signaling that identifies the scheduling configuration is transmitted to the device. The apparatus according to claim 1, wherein the processor is capable of causing the processor to receive the control signaling indicating that at least two of the plurality of search space sets of the scheduled component carrier are configured within a first bandwidth part of the scheduled component carrier, and that the first and second search space sets of the scheduling component carrier are configured within a second bandwidth part of the scheduling component carrier.
The command to the device, The apparatus according to claim 1, wherein the processor can further perform to cause the first bandwidth portion associated with the first and second search space sets of the scheduling component carrier to be active, and the second bandwidth portion associated with the plurality of search space sets of the scheduled component carrier to be active, and to monitor for one or more iterations of the control message, at least in part, based on the fact that the first and second bandwidth portions are active, a first decode candidate for the first search space set and a second decode candidate for the second search space set.
The command to the device, The apparatus according to claim 1, wherein the first search space set monitors a first decode candidate of the first search space set for a second control message and a second decode candidate of the second search space set for an iteration of the second control message, at least in part on the basis that the first search space set is linked to the second search space set for control channel iterations for carrier in-carrier scheduling on the scheduling component carrier, and the processor can further perform to cause the second control message to schedule a second communication between the UE and the base station via the scheduling component carrier.
The first decoding candidate of the first search space set and the second decoding candidate of the second search space set are associated with the first carrier indicator field value corresponding to the scheduling component carrier, The apparatus according to claim 1, wherein the third decoding candidate of the first search space set and the fourth decoding candidate of the second search space set are associated with a second carrier indicator field value that corresponds to the scheduled component carrier and is different from the first carrier indicator field value.
The command to the device, The apparatus according to claim 1, wherein the processor is further capable of causing the base station to receive additional control signaling indicating a plurality of component carriers, including the scheduled component carrier, configured for cross-carrier scheduling via control channel iterations, and to determine, at least in part, based on the indications of the plurality of component carriers, that a first decoding candidate of the first search space set is linked to a second decoding candidate of the second search space set for control channel iterations for cross-carrier scheduling on the scheduled component carrier.
The command to the device, The apparatus according to claim 1, wherein the processor is further capable of causing the base station to receive additional control signaling indicating a plurality of component carriers, including the scheduled component carrier, configured for cross-carrier scheduling via control channel iterations on the scheduling component carrier, and to determine, at least in part, based on the indications of the plurality of component carriers, that a first decoding candidate of the first search space set is linked to a second decoding candidate of the second search space set for control channel iterations for cross-carrier scheduling on the scheduled component carrier.
The plurality of search space sets of the scheduled component carrier comprises a third search space set and a fourth search space set, The first search space set of the scheduling component carrier and the third search space set of the scheduled component carrier are associated with the first search space set index. The apparatus according to claim 1, wherein the second search space set of the scheduling component carrier and the fourth search space set of the scheduled component carrier are associated with a second search space set index different from the first search space set index.

Description

Cross-reference This patent application claims priority to U.S. Patent Application No. 17/582,473, filed on 24 January 2022, “TECHNIQUES FOR CONTROL CHANNEL REPETITION FOR CROSS-CARRIER SCHEDULING,” filed on 19 March 2021, by KHOSHNEVISAN et al., “TECHNIQUES FOR CONTROL CHANNEL REPETITION FOR CROSS-CARRIER SCHEDULING,” which is assigned to the assignee of this application and expressly incorporated herein by reference. The following concerns wireless communications, including techniques for control channel iteration for cross-carrier scheduling. Wireless communication systems are widely deployed to provide various types of communication content, including voice, video, packet data, messaging, and broadcast. These systems can support communication with multiple users by sharing available system resources (e.g., time, frequency, and power). Examples of such multiple access systems include fourth-generation (4G) systems such as Long Term Evolution (LTE), LTE-Advanced (LTE-A), or LTE-A Pro systems, and fifth-generation (5G) systems, sometimes referred to as New Radio (NR) systems. These systems may employ technologies such as code division multiple access (CDMA), time division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal FDMA (OFDMA), or discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-S-OFDM). A wireless multiple access communication system may include one or more base stations or one or more network access nodes, each simultaneously supporting communication for multiple communication devices, sometimes known as user equipment (UE). Some wireless communication systems may allow communications within component carriers to be scheduled via control signaling within the same component carrier (e.g., "self-scheduling" or "intra-carrier scheduling") and/or via control signaling within different component carriers (e.g., "cross-carrier scheduling" or "inter-carrier scheduling"). In some cases, sets of search spaces on scheduling component carriers may be linked to each other for control channel iterations to improve the transmit diversity and reliability of wireless communications. However, some wireless communications exhibit limitations in their ability to schedule component carriers via control channel iterations performed on scheduling component carriers. This figure shows an example of a wireless communication system that supports a technique for control channel iteration for cross-carrier scheduling according to an aspect of the present disclosure.This figure shows an example of a resource configuration that supports a technique for control channel iterations for cross-carrier scheduling according to an aspect of this disclosure.This figure shows an example of a resource configuration that supports a technique for control channel iterations for cross-carrier scheduling according to an aspect of this disclosure.This figure shows an example of a wireless communication system that supports a technique for control channel iteration for cross-carrier scheduling according to an aspect of the present disclosure.This figure shows an example of a resource configuration that supports a technique for control channel iterations for cross-carrier scheduling according to an aspect of this disclosure.This figure shows an example of a resource configuration that supports a technique for control channel iterations for cross-carrier scheduling according to an aspect of this disclosure.This figure shows an example of a resource configuration that supports a technique for control channel iterations for cross-carrier scheduling according to an aspect of this disclosure.This figure shows an example of a process flow that supports a technique for control channel iterations for cross-carrier scheduling according to an aspect of the present disclosure.This is a block diagram of a device supporting a technique for control channel iteration for cross-carrier scheduling according to an aspect of the present disclosure.This is a block diagram of a device supporting a technique for control channel iteration for cross-carrier scheduling according to an aspect of the present disclosure.This is a block diagram of a communications manager supporting a technique for control channel iteration for cross-carrier scheduling according to an aspect of the present disclosure.This is a diagram of a system including a device that supports a technique for control channel iteration for cross-carrier scheduling according to an aspect of the present disclosure.This is a block diagram of a device supporting a technique for control channel iteration for cross-carrier scheduling according to an aspect of the present disclosure.This is a block diagram of a device supporting a technique for control channel iteration for cross-carrier scheduling according to an aspect of the present disclosure.This is a block diagram of a communications manager supporting a technique for control channel iteration fo