Patent application number | Description | Published |
20090310560 | Provisional hand-off mechanism in a heterogeneous mac protocol for wireless networks - This disclosure describes a provisional hand-off mechanism to transfer handsets between base stations for a MAC protocol that combines contention-free and contention-based MAC protocols for use in wireless VoIP systems with multiple base stations that reduces packet overhead thus allowing for transmission of high bit-rate data to multiple users over wired and wireless means. | 12-17-2009 |
20090316670 | Element-Based Method for Auto-Configuration of Handsets by a Base Station in a Heterogeneous Mac Protocol for Wireless Networks - An element-based method to automatically configure mobile handsets by the base station using a protocol that combines contention-free and contention-based MAC protocols for use in wireless VoIP systems with multiple base stations is disclosed. | 12-24-2009 |
20090323657 | Tri-core architecture for reducing mac layer processing latency in base stations - A tri-core architecture for reducing MAC layer processing latency at the base stations is described. The new architecture minimizes the processing delay by introducing a pipelined approach. The fundamental concept involves splitting the Medium Access Control (MAC) layer functionality into three distinct tasks, with each processor performing a given task. All tasks will be thus performed concurrently, avoiding much of the overhead encountered while processing received packets and preparing packets to be transmitted. | 12-31-2009 |
20100074226 | Proxy based approach for IP address assignment to decrease latency of hand-offs in mobile IP telephony - A mechanism for decreasing the latency in an IP address assignment process for mobile systems using IP as network layer protocol is described. The proposed system is aimed at supporting seamless hand-offs for real-time applications like VOIP. A set of optimized messages is defined to eliminate the need for exchanging long DHCP messages to acquire an IP address. The mechanism involves splitting the IP address assignment functionality into two parts, with the base station being responsible for assigning IP addresses to individual end user devices, and the Mobile Switching Center assigning a block of IP addresses to each base station. | 03-25-2010 |
20100091738 | Methodology for base station assisted channel selection for interference handling in mobile networks - A mechanism is disclosed where a Base Station provides assistance to a mobile device in the channel-switch process because a mobile device might have to perform frequent channel switches to overcome adverse channel conditions due to interference in the 900 MHz ISM band. The Base Station broadcasts channel-specific information that will be used by all mobile devices to accurately select prospective channels for future channel-switches, thereby cutting down the latency that is experienced during an actual switch. | 04-15-2010 |
20100135247 | System and method for base station assisted mobility detection for mobile handsets - In this disclosure a technique of base station assisted mobility detection of handsets is described. More specifically by transmitting the subnet ID in the Beacon, a base station simplifies the process of network detection. This also leads to a significant reduction in handoff latency by giving the handset ample time to prepare for the impending handoff. | 06-03-2010 |
20100150095 | Network entry procedure in multi-channel mobile networks - A technique for network entry in multi-channel mobile systems is described. The procedure utilizes the channel specific information sent in the beacon of each channel to select a subset of suitable channels. It then proceeds to scan these channels to gather information on perceived interference and received signal strength. Based on collected information the device picks the most suitable channel for joining the network. Since the channels to be scanned are pre-selected based on information seen in the beacon, the overall scan latency is reduced, thereby leading to a faster and more successful network entry. | 06-17-2010 |
20100150111 | System and method for adaptive proactive scanning to support fast handoffs in mobile networks - A scanning technique to select the best channel a mobile handset needs when approaching handoff is described. More specifically a system and method for an adaptive proactive scanning mechanism in which the rate of scanning is determined by the necessity to handoff and battery power is disclosed. | 06-17-2010 |