Radio resource signaling during network congestion in a mobile wireless device

Abstract

A method for radio link control in a mobile wireless communication device The mobile wireless device transmits a sequence of service requests to establish radio resources with a wireless communication network for a data packet in a pending data buffer. When no radio resources are allocated in response to the transmitted sequence of service requests, the mobile wireless device sets a minimum threshold for the pending data buffer, discards all pending data packets above the minimum threshold and discards the oldest pending data packet. The mobile wireless device repeats transmitting and discarding until a radio resource is allocated or the pending data packet buffer is empty. A retry interval between successive service requests is increased after transmitting each sequence of service requests until reaching a maximum retry interval value.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This patent application takes priority under 35 U.S.C. 119(e) to U.S. Provisional Patent Application Ser. No. 61 / 362,662 entitled, “METHOD AND APPARATUS FOR RADIO RESOURCE SIGNALING DURING NETWORK CONGESTION IN A MOBILE WIRELESS DEVICE” by Shiva et al. filed Jul. 8, 2010 which is incorporated by reference herein in its entirety for all purposes.TECHNICAL FIELD[0002]The described embodiments relate generally to wireless mobile communications. More particularly, a method and apparatus is described for radio resource signaling during periods of radio access network congestion in a mobile wireless communication device.BACKGROUND OF THE INVENTION[0003]Mobile wireless communication devices, such as a cellular telephone or a wireless personal digital assistant, can provide a wide variety of communication services including, for example, voice communication, text messaging, internet browsing, and electronic mail. Mobile wireless communication dev...

AI Technical Summary

Benefits of technology

The described embodiments relate to a method and apparatus for controlling radio resources in a mobile wireless device during periods of network congestion. The technical effects of the patent include improving data transmission efficiency and reducing network congestion by optimizing radio resource allocation and data packet discarding. Additionally, the patent provides a non-transitory computer program code for implementing the described method.

Problems solved by technology

Radio resources in the radio access network, however, can be scarce, and the wireless communication network can release the radio resources allocated for the data connection during an idle period while maintaining the PDP context, thus placing the data connection in a preservation mode.

These repeated service requests can add unnecessary levels of signaling traffic to an already overloaded radio access network.

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