DCI-Based Communication Control for Simultaneous K0 and K2 Indication
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Solution Overview
Problem
Existing communication systems fail to simultaneously determine the valid minimum K0 of a downlink BWP and the valid minimum K2 of an uplink BWP for a terminal device, limiting power consumption reduction strategies.
Innovation Solution
A method where the network device configures a one-to-one correspondence between minimum K0 for downlink BWPs and minimum K2 for uplink BWPs, and uses DCI to indicate the valid minimum values, allowing simultaneous determination and switching of activated BWPs to optimize power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If only one of the valid minimum K0 of the downlink BWP or the valid minimum K2 of the uplink BWP is indicated, then the indication complexity is reduced, but the power consumption reduction strategy cannot be fully implemented because both values cannot be simultaneously determined
Solution Approach 1:
The patent combines the indication of minimum K0 and minimum K2 into a single DCI message. The network device configures a one-to-one correspondence between downlink BWPs and uplink BWPs, and indicates both minimum K0 and minimum K2 values simultaneously through DCI, allowing the terminal device to determine both valid minimum values at the same time without increasing indication complexity
Solution Approach 2:
The network device pre-configures a one-to-one correspondence between downlink BWPs and uplink BWPs, establishing the relationship before actual scheduling. This preliminary configuration enables efficient joint indication of minimum K0 and minimum K2 values through DCI, facilitating power consumption reduction without adding complexity
2Use of energy by moving object
If cross-slot scheduling is used to reduce power consumption, then the terminal device can relax processing time and reduce clock rate and voltage, but the system requires simultaneous determination of both minimum K0 and minimum K2 values which existing solutions cannot provide
Solution Approach 1:
The patent merges the indication mechanisms for minimum K0 and minimum K2 into a unified DCI indication process. By configuring a correspondence between downlink and uplink BWPs and indicating both minimum values simultaneously, the system enables cross-slot scheduling for both downlink and uplink, providing the scheduling flexibility needed for power consumption reduction
3Adaptability or versatility
If multiple downlink BWPs and uplink BWPs are configured independently with independent minimum K0 and minimum K2 values, then the system adaptability is improved, but the indication mechanism becomes insufficient when only one value can be indicated at a time
Solution Approach 1:
The network device performs preliminary configuration of a one-to-one correspondence between downlink BWPs and uplink BWPs. This pre-established relationship allows the DCI to efficiently indicate both minimum K0 and minimum K2 values simultaneously without requiring separate indication processes, preventing loss of scheduling parameter information
Solution Approach 2:
The DCI message is designed to serve multiple functions: it indicates the scheduled resource, specifies the minimum K0 value for downlink, and simultaneously specifies the minimum K2 value for uplink. This multi-functional indication mechanism maintains system adaptability while preventing information loss
Data Source
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AI summary
This application relates to the field of communications technologies, and discloses a communication method and a communications apparatus, to provide a solution in which a minimum K0 and a minimum K2 can be j ointly indicated, to indicate a valid minimum K0 of a downlink BWP of a terminal device and a valid minimum K2 of an uplink BWP of the terminal device. The method includes: sending, by a network device, downlink control information to a terminal device, where the downlink control information includes indication information, and the indication information indicates one of at least one minimum K0 configured for a downlink BWP of the terminal device, or the indication information indicates one of at least one minimum K2 configured for an uplink BWP of the terminal device, where there is a correspondence between the minimum K0 configured for the downlink BWP and the minimum K2 configured for the uplink BWP.