Contention resolution for an orthogonal frequency-division multiplexing wireless access node

摘要

An orthogonal frequency-division multiplexing (OFDM) wireless access node to facilitate contention resolution between wireless communication devices is configured to receive connection requests on a random access channel transmitted from first and second wireless communication devices, transmit a resource allocation message comprising a same resource block to both the first and second wireless communication devices, and receive competing connection request messages transmitted from the first and second wireless communication devices on the same resource block. A contention resolution message is generated and transferred to the first and second wireless communication devices, wherein the first wireless communication device determines that a contention resolution identifier received in the contention resolution message is associated with the first wireless communication device and responsively decodes connection setup information. The second wireless communication device is paged with a contention-free preamble and utilizes the contention-free preamble to request a connection.

主权项

1. A method of operating an orthogonal frequency-division multiplexing (OFDM) wireless access node to facilitate contention resolution between wireless communication devices, the method comprising:
receiving connection requests on a random access channel transmitted from a first wireless communication device and a second wireless communication device; transmitting a resource allocation message comprising a same resource block to both the first wireless communication device and the second wireless communication device; receiving competing connection request messages transmitted from the first wireless communication device and the second wireless communication device on the same resource block and selecting the first wireless communication device for connection setup; and responsive to selecting the first wireless communication device for connection setup, generating a contention resolution message comprising a contention resolution identifier associated with the first wireless communication device, transferring the contention resolution message for delivery to the first wireless communication device and the second wireless communication device, and paging the second wireless communication device with a contention-free preamble, wherein the first wireless communication device is configured to determine that the contention resolution identifier received in the contention resolution message is associated with the first wireless communication device and to responsively decode connection setup information, and wherein the second wireless communication device is configured to monitor a channel for the contention-free preamble and utilize the contention-free preamble to request a connection.