Multiplexing multiple unsolicited grant service (UGS) users onto a same radio resource

Abstract

The technology in this application multiplexes transmission associated with multiple users onto the same unsolicited grant service (UGS) radio resource(s) in a packet-based, radio communications system. Normally, the radio resources in a packet-based communications system are dynamically scheduled in response to radio resource requests associated with specific user devices, and the scheduled communications are designed not to use the same radio resource at the same time. However, an unsolicited grant of radio resources for communication between multiple user devices and the packet-based communications system is also established. The communications between those multiple user devices and the packet-based communications system use at least some of the same radio resources associated with the unsolicited grant at the same time. Because of this at least partial radio resource overlap / collision, each of the multiple user's data to be transmitted via the UGS is associated with a user-specific radio resource pattern. A user's radio resource pattern permits a radio receiver to extract that user's data from the received UGS signal that include multiple user transmissions.

Description

technical field [0001] The technical field of the invention relates to wireless communications, and more particularly to a wireless communications network comprising a base station and a plurality of wireless subscriber stations communicating using a conflict-free based user scheduling to access a common packet-based wireless resources. Background technique [0002] In a typical wireless communication system, a user communication terminal, called a user equipment unit (UE), communicates with other networks, such as the Internet, through a radio access network (RAN). A radio access network (RAN) covers a geographical area divided into cell areas, each of which is served by a base station, such as a radio base station (RBS), also referred to in some networks as a "Node B" or enhanced Node B) provides the service. A cell is a geographical area in which radio coverage is provided by radio base station equipment at a base station site. [0003] Third generation (3G) cellular r...

AI Technical Summary

Problems solved by technology

But the multi-user package has some disadvantages

First, multi-user packets are not used in the uplink

Second, additional constraints are imposed on scheduling when transmitting multi-user packets on the downlink

Third, if the payload combination is compressed to reduce overhead, blind detection is necessary at the receiver side

Compression overhead adds additional assumptions and thus worsens detection performance

Fourth, multi-user packets complicate HARQ operation

[0012] Therefore, UGS designed for resource-based packet wireless communication systems that request resource grants does not efficiently utilize wireless resources for random types of traffic that are non-deterministic in their activity and also low-rate, low latency and fault tolerant

Images