Patent ID: 11937308
Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 16:
17. A non-transitory computer readable medium storing a computer program product for controlling a contending radio node in a wireless communication network, the computer program product comprising software instructions that, when run on processing circuitry of the contending radio node, cause the contending radio node to:
obtain a random access preamble based on which a timing advance for transmission from the contending radio node to a recipient radio node is derivable, wherein the random access preamble is susceptible to contention;
obtain a contention-resolving identity of the contending radio node;
transmit the random access preamble and the contention-resolving identity to the recipient radio node, on one or more radio resources, and using the same Orthogonal Frequency Division Multiplexing (OFDM) transmission advancement timing;
responsive to said transmitting, receive from the recipient radio node a response signal that indicates a contention-resolving identity as well as a timing advance;
resolve the contention in favor of the contending radio node when the contention-resolving identity indicated by the response signal corresponds to the contention-resolving identity that the contending radio node transmitted; and
responsive to resolving the contention in favor of the contending radio node, adjust the OFDM transmission advancement timing that governs the timing advancement of OFDM transmissions from the contending radio node to the recipient radio node, according to the timing advance indicated by the response signal.