IP adaptation layer on backhaul connection of cellular network
US6920125B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 27, 2000 |
| Grant date | Jul 19, 2005 |
| Priority date | — |
| Expiry date | May 25, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W88/12
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The present invention relates to an improved wireless communications system capable of efficiently transmitting smaller-sized data packets (e.g. 10 to 20 byte length) that are frequently delivered (e.g. every 10 to 20 msec.) to mobile nodes on the communications system, such as voice communications. Because an uncompressed TCP/IP or UDP/IP header length is disproportionally large compared to the smaller-sized data packets, the bandwidth on the backhaul connection between the base station controller unit (BSC) and the base transceiver station (BTS) is not being utilized as efficiently as possible. The present invention optimizes the transmission of information packets on the backhaul connection by using an IP Adaptation Layer (IPAL) protocol to map the user connections, eliminate the large header on information packets having smaller-sized data packet sizes, and concatenating the data packets into an IPAL information packet for tunneling on the backhaul connection. In this manner, the present invention more efficiently uses the available bandwidth on the backhaul connection by selectively reducing the overhead (e.g. headers) of the information packet transmission.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.