Dynamic Search Space Configuration for LTE User Equipment
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Solution Overview
Problem
The existing eMTC and FeMTC systems in LTE networks have limited scheduling flexibility and resource utilization efficiency due to predefined methods for user equipment to acquire downlink control information, restricting the improvement of resource allocation and utilization.
Innovation Solution
The proposed method involves detecting specific triggers from the network side, such as data packet scheduling, subframe allocation, DCI format, or signaling, to determine when user equipment should perform operations like receiving downlink control information or signals, allowing for improved scheduling flexibility and resource utilization by optimizing the timing and format of data packet transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If user equipment monitors downlink control information in predefined search spaces using semi-static signaling, then the control information can be reliably received, but the scheduling flexibility and resource utilization efficiency are limited
Solution Approach 1:
The patent applies dynamics by transitioning from semi-static predefined search spaces to dynamic search space configuration. The network side device can dynamically indicate search space locations through downlink control information, allowing the search space to move flexibly in time-frequency resources based on actual scheduling needs, thereby improving scheduling flexibility while maintaining reliable control information reception
Solution Approach 2:
The patent changes the parameters of search space configuration from fixed semi-static settings to dynamic parameters indicated by network side devices. By modifying search space location, timing, and resource allocation parameters through flexible indication mechanisms, the system achieves better resource utilization efficiency without increasing device complexity
2Reliability
If user equipment continuously monitors downlink control information in predefined search spaces, then no control information is missed, but unnecessary resource usage and power consumption occur when no data packets need transmission
Solution Approach 1:
The patent implements feedback mechanisms where the network side device provides triggering information to indicate whether downlink control information needs to be monitored. This feedback allows user equipment to adjust its monitoring behavior dynamically - maintaining reliable reception when needed while reducing power consumption when no transmission occurs, thus resolving the contradiction between reliability and energy efficiency
3Productivity
If user equipment is triggered to perform operations only when specifically scheduled, then resource utilization efficiency improves, but the complexity of trigger detection and timing management increases
Solution Approach 1:
The patent applies preliminary action by having the network side device configure and indicate search space parameters in advance through semi-static signaling, with updates provided via dynamic downlink control information. This preliminary configuration reduces the complexity of trigger management by establishing baseline parameters before actual transmission occurs, allowing efficient resource utilization without excessive complexity in real-time trigger detection
Data Source
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AI summary
Disclosed are an information sending and receiving method and apparatus, a device and a storage medium. The information receiving method includes: detecting whether a network side triggers a user equipment in a set manner to perform a first operation; and in response to a detection result that the network side triggers the user equipment in the set manner to perform the first operation, performing the first operation, where the first operation includes one of: receiving downlink control information in a search space, or receiving a first signal on a physical resource.