NAN Device Paging Without Central Node
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In Neighbor Awareness Networking (NAN) mechanisms, existing paging operations between devices rely on a central node, leading to inefficiencies when the central node leaves the cluster, requiring re-establishment of connections and reallocation of association identifiers, which affects paging efficiency.
Innovation Solution
A method where NAN devices can perform paging independently by sending and receiving paging messages that carry service information, allowing them to determine if data transmission is needed without relying on a central node or association identifiers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a central node is used to assist paging operations between NAN devices, then paging can be performed in an organized manner with centralized control, but when the central node leaves the cluster, connection re-establishment and AID reallocation are required, which reduces paging efficiency
Solution Approach 1:
NAN devices perform paging operations independently without relying on a central node. Each NAN device can send and receive paging messages directly, determining data transmission needs based on service information in the messages, thereby eliminating the bottleneck caused by central node dependency and maintaining high paging efficiency even when network topology changes
Solution Approach 2:
The paging function is extracted from the central node and distributed to individual NAN devices. Each NAN device maintains its own paging capability, removing the single point of failure and allowing paging operations to continue efficiently regardless of central node presence
2Ease of operation
If association identifiers (AID) are allocated by a central node for device identification, then centralized management and control are achieved, but the process of allocating and reallocating AIDs increases complexity and time consumption when devices join or leave the cluster
Solution Approach 1:
NAN devices independently manage their own identification through service information contained in paging messages, rather than relying on central node-allocated AIDs. This self-service approach eliminates the complexity of AID allocation and reallocation processes while maintaining ease of operation through autonomous device behavior
Solution Approach 2:
Service information in paging messages serves multiple functions: it identifies the transmitting NAN device, describes the service being offered or requested, and enables paging operations all in one data structure, replacing the need for separate AID allocation mechanisms
3Measurement precision
If paging messages include detailed service information, then NAN devices can accurately determine data transmission needs, but message size increases leading to higher processing overhead
Solution Approach 1:
The patent optimizes service information parameters by using compact field structures and selective inclusion based on service type. Essential identification and service description parameters are maintained for accurate matching, while optional parameters are included only when needed, balancing precision with data efficiency
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
Embodiments of the present invention provide a method for paging between NAN devices, and a NAN device, and relate to the field of communications technologies, so that paging can be directly performed between NAN devices when there is no central node. The method includes: sending, by a first NAN device, a first paging message in a first window; receiving a paging response message sent by a second NAN device that meets first service information; and determining, according to the paging response message, whether to perform data transmission with the second NAN device. The first paging message carries the first service information, and the first service information is used to describe a service that needs to be performed by the NAN device. The method is applied to a NAN mechanism.