CU-UP EHC Context Allocation from UE Capability Indication
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In a split architecture of an access network device, the CU-UP lacks knowledge of the UE's capabilities, leading to an improper establishment of Ethernet header compression (EHC) contexts.
Innovation Solution
The CU-CP provides first information to the CU-UP indicating the maximum number of EHC contexts that can be established in the downlink direction, allowing the CU-UP to properly allocate these contexts based on the UE's capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If detailed information about multiple channels is transmitted to assist user selection, then the user can make more informed decisions, but the information indication overhead increases significantly
Solution Approach 1:
The patent segments channel information into two distinct parts: first information (basic attributes like service type, bandwidth, latency) sent to all UEs, and second information (detailed quality metrics, pricing, availability) sent only to candidate UEs. This segmentation reduces overall signaling overhead while ensuring complete information delivery is needed for decision-making.
Solution Approach 2:
The patent applies local quality by providing different information depths to different user groups. Candidate UEs receive comprehensive detailed information tailored to their specific scenario, while non-candidate UEs receive only essential broadcast information. This localized information quality optimization reduces unnecessary overhead for users who don't need detailed data.
2Measurement precision
If comprehensive channel information is provided to all UEs, then user decision accuracy improves, but the signaling overhead and network load increase
Solution Approach 1:
The network performs preliminary actions by pre-filtering and identifying candidate UEs based on basic criteria before transmitting detailed information. This preliminary identification step ensures that comprehensive data is only sent to users who meet initial requirements, reducing overall signaling load while maintaining decision accuracy for relevant users.
Solution Approach 2:
The patent implements partial action by sending complete information only to the subset of candidate UEs who need it for decision-making, rather than broadcasting to all UEs. This partial information distribution approach maintains measurement precision for decision-critical users while significantly reducing network energy consumption from unnecessary transmissions.
3Reliability
If the network transmits detailed quality information for each channel, then users can accurately evaluate options, but the transmission time and network resources are consumed
Solution Approach 1:
Channel information is segmented into first information (transmitted to all UEs) and second information (transmitted to candidate UEs). This segmentation enables parallel transmission paths where essential information reaches all users simultaneously while detailed evaluation data is efficiently distributed only to those who need it, reducing overall transmission time.
Solution Approach 2:
The network performs preliminary identification of candidate UEs before detailed information transmission. This preliminary action creates a ready list of recipients, enabling efficient targeted broadcasting or unicast transmission of detailed quality information, thereby reducing the total time required for comprehensive information delivery compared to universal broadcasting.
Data Source
Figure 1~2
Figure 3
Figure 4~5
AI summary
Embodiments of this application provide an information indication method and apparatus. The method includes: A CP indicates, to a UP by using first information, a maximum number of EHC contexts that can be established by the UP for UE, a DRB of the UE, or a PDU session of the UE in a downlink direction, so that the UP can establish a proper number of EHC contexts for the UE, the DRB of the UE, or the PDU session of the UE in the downlink direction based on the maximum number. This resolves a problem that a UP in an access network device in a split architecture cannot establish a proper number of EHC contexts for the UE because the UP does not know a capability of the UE.