Mixed Delay Constraints in Wyner's Soft-Handoff Network

TL;DR

This paper investigates Wyner's soft-handoff network with mixed delay constraints, deriving bounds on capacity and characterizing multiplexing gains when cooperation is limited to transmitters or receivers.

Contribution

It introduces a model with mixed delay constraints and provides new capacity bounds and multiplexing gain characterizations for cooperative scenarios.

Findings

Derived inner and outer bounds on capacity region.

Characterized multiplexing gain region under specific cooperation conditions.

Analyzed the impact of fast and slow bits on network performance.

Abstract

Wyner's soft-handoff network with mixed delay constraints is considered when neighbouring receivers can cooperate over rate-limited links. Each source message is a combination of independent "fast" and "slow" bits, where the former are subject to a stringent decoding delay. Inner and outer bounds on the capacity region are derived, and the multiplexing gain region is characterized when only transmitters or only receivers cooperate.