Base Station Paging Forwarding Capability Signaling

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Solution Overview

Problem

The existing paging optimization methods in LTE networks lead to inefficient use of radio resources due to eNBs receiving duplicate paging messages and failing to transmit messages to neighboring eNBs, as the MME lacks information on the capability of eNBs to forward paging messages.

Innovation Solution

A communication system where the base station transmits setting information to the host node indicating whether a paging message can be forwarded to other base stations, allowing the host node to determine the optimal transmission path and prevent duplicate messages.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the MME transmits paging messages to all eNBs in a TA to ensure reliable delivery, then the reliability of message delivery is improved, but the processing load on the MME rapidly increases

Engineering Contradiction:
Improvemessage delivery reliabilityVSAvoidMME processing capacity
Core Design Contradiction:
ReliabilityVSProductivity

Solution Approach 1:

The patent segments the paging message transmission process into two stages: first, the MME transmits paging messages to selected eNBs (reducing immediate processing load); second, those eNBs forward messages to neighboring eNBs (ensuring comprehensive coverage). This segmentation resolves the contradiction by distributing the transmission burden across multiple nodes while maintaining delivery reliability.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent introduces eNBs as intermediary nodes that receive paging messages from the MME and forward them to neighboring eNBs. These intermediary eNBs relieve the MME of the burden of directly communicating with all eNBs in the TA, thereby reducing MME processing load while ensuring messages reach all necessary recipients through the intermediary forwarding mechanism.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Productivity

If eNBs transmit paging messages to neighboring eNBs to reduce MME processing load, then the productivity is improved, but radio resources are wasted due to duplicate messages

Engineering Contradiction:
Improvepaging processing efficiencyVSAvoidradio resource utilization efficiency
Core Design Contradiction:
ProductivityVSLoss of energy

Solution Approach 1:

The patent implements a feedback mechanism where eNBs transmit setting information to the host node indicating whether they can forward paging messages to other eNBs. The host node uses this feedback to determine the optimal transmission path, preventing duplicate messages from being sent to eNBs that already have the message or cannot forward it, thereby avoiding radio resource waste while maintaining processing efficiency.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The patent performs preliminary action by having eNBs transmit setting information to the host node before actual paging message transmission occurs. This preliminary exchange of capability information allows the host node to pre-determine the optimal transmission path and avoid attempting to send messages to eNBs that cannot forward them, preventing resource waste before it occurs.

Inventive Principle:
Principle #10Preliminary action

3Productivity

If the MME does not transmit paging messages to all eNBs to reduce processing load, then the productivity is improved, but the reliability of message delivery deteriorates

Engineering Contradiction:
ImproveMME processing capacityVSAvoidmessage delivery reliability
Core Design Contradiction:
ProductivityVSReliability

Solution Approach 1:

The patent segments the paging transmission task by having the MME transmit messages to selected eNBs that are capable of forwarding, while those eNBs segment the remaining distribution task by forwarding to their neighboring eNBs. This segmented approach maintains comprehensive coverage (reliability) while the MME processes fewer messages directly (productivity improvement).

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent uses eNBs as intermediary nodes that bridge the gap between the MME and all eNBs in the TA. The MME only needs to communicate with a subset of eNBs that act as intermediaries to forward messages to other eNBs, thereby maintaining delivery reliability to all eNBs while reducing the MME's direct processing burden.

Inventive Principle:
Principle #24Intermediary (Mediator)

4Productivity

If eNBs forward paging messages to neighboring eNBs without capability information exchange, then the productivity is improved, but device complexity increases due to lack of control

Engineering Contradiction:
Improvepaging processing efficiencyVSAvoidsystem control complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The patent introduces a feedback mechanism where eNBs transmit setting information to the host node about their paging forwarding capability. This feedback loop provides the host node with the information needed to determine optimal transmission paths, adding controlled intelligence to the system without creating uncontrolled complexity. The feedback mechanism enables automated decision-making based on real-time capability information.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The patent implements self-service by having eNBs autonomously transmit their own setting information to the host node, allowing the system to automatically determine optimal transmission paths based on eNB capabilities without requiring centralized manual configuration. This self-service approach reduces operational complexity while maintaining processing efficiency through automated capability-based routing.

Inventive Principle:
Principle #25Self-service

Data Source

PatentUS11089567B2Communication system, base station, host node, and communication method
Publication Date: 2021.08.10 NEC CORP
  • US11089567B2 patent drawing
  • US11089567B2 patent drawing
  • US11089567B2 patent drawing

AI summary

An object of the present invention is to provide a communication system, a base station, a host node, and a communication method in order to address one or more of the above-described problems. A communication system according to the present invention is a communication system including: a base station (10) and a host node (40) that communicates with the base station (10). The base station (10) included in the communication system transmits to the host node (40) setting information indicating whether or not a paging message transmitted from the host node (40) can be transmitted to other base stations, and the host node (40) receives the setting information from the base station (10).