摘要:
A method of establishing a cooperative ad hoc network of phone extensions is implemented by the cellular devices within the ad hoc network. First, a first cellular device receiving an incoming call or placing an outgoing call is designated as the master of the ad hoc network and the remaining cellular devices are designated as slaves of the ad hoc network. Second, each cellular device is operated to facilitate a multi-party connection to the incoming call or outgoing call, the multi-party connection including the master and one or more slaves.
摘要:
A method improves the decoding rate and reliability of adjacent cell base stations by expediting the decode process if the signal quality of a traffic channel is within a predetermined range. In particular, adjacent control channels are monitored and decoded at a rapid rate by ignoring the speech traffic channel information. The speech is interrupted (526) and the channel information is decoded (526) when, for example, the bit error rate or frame error rate of the traffic channel (TCH) is deteriorating while another channel has a better signal. The scheduling of speech channel interruptions (522) may also occur when insufficient neighbor cell information is available at the beginning of a call or immediately after handover. The lost speech signal could be recovered (536) using conventional speech extrapolation techniques.
摘要:
A visual presentation of a simulated communication unit moving through a wireless communication system is combined with an audio presentation of speech that a user would hear (311) if the user were placed in the same radio environment. In addition, both audible and visual indicia of RF interference may also be provided (107, 109), with or without audio playback, to aid in designing around interference sources and their intensities. A set of error masks and corresponding audio files are created (305), wherein each file contains the same audio track, but based on speech error masks created at different vehicle speeds and signal to noise ranges. Real-time playback of the audible signal with noise is useful in planning for particular needs of a wireless communication system planner.
摘要:
A method for handover in a cellular system is provided which includes periodically scanning from neighboring cells, traffic channels of a serving cell to determine channel metrics. If the channel metrics exceed a threshold, validating the serving cell identity by verifying traffic channel color code. The channel metrics are then periodically transferred to the serving cell where a handover decision is made.
摘要:
A base station allocates resources for peer-to-peer communications by creating or updating peer sets from measured performance information received from one or more stations. Based on current resource assignments in each timeslot and based on the peer sets, the base station determines excluded timeslots and preferred timeslots. The base station then marks potential resources in a portion of a resource allocation map. One of the potential resources is allocated for peer-to-peer communication between a transmitter station and one or more receiver stations.
摘要:
Systems, methods and apparatus are provided for scheduling resources in Orthogonal Frequency-Division Multiple Access (OFDMA) communication networks for “direct link” or peer-to-peer communications among stations operating therein so that OFDMA resources can be allocated to a transmitter station for a peer-to-peer communication session with a receiver station such that near-far issues caused by peer-to-peer communication are reduced/avoided. The disclosed technologies can prevent peer-to-peer communication links using different sub-channels within the same time slot from creating near-far issues for other receiver stations that are within communication range.
摘要:
A method of operation of a node for multi-band communication routing within a wireless communication system comprises communicating a communication session on a default route within an identified quality of service objective on a first frequency band; broadcasting, on a second frequency band, one or more route discovery messages at each of a plurality of sets of transmission variables; storing one or more alternate route table entries in a route table, wherein each of the one or more alternate route table entries are indexed by each of the plurality of sets of transmission variables that are at least within the quality of service objective; selecting a stored alternate route that is at least within the quality of service objective of the communication session on the second frequency band; and switching the communication session to operate using the transmission variables related to the selected alternate route.
摘要:
A method and apparatus for distributing live video to multiple client devices is provided herein. In particular, a router is provided that acts on behalf of all client devices in its network. The router serves multiple groups of client devices with each group being formed by client devices having similar bandwidth requirements. The router then requests and receives video chunks from a network. The router then redistributes the video chunks to the multiple client devices using a multicast transmission. In particular, to minimize the demands on the core network, the router sets up a separate multicast to each group. Live video, of the appropriate quality is then multicast to each group.
摘要:
Disclosed are methods that associate “importance” information with chunks of a media presentation. An end-user device or server uses this information to intelligently manage resources when downloading or rendering the media presentation. Many different types of importance information are used. An editor can tag a chunk as important based on the content of the chunk or may give the chunk a rating, or importance can be inferred from download statistics. In some embodiments, the end-user device determines the importance of a chunk based on observations of the behavior of the device's user. The end-user device can send its locally gathered behavioral observations to a server to enhance that server's demographic information. The server can observe its own download behavior to infer importance. The end-user device may choose to either not download, or to download at a low resolution, those chunks deemed to be unimportant, thus saving bandwidth and battery power.
摘要:
Disclosed are methods that associate “importance” information with chunks of a media presentation. An end-user device or server uses this information to intelligently manage resources when downloading or rendering the media presentation. Many different types of importance information are used. An editor can tag a chunk as important based on the content of the chunk or may give the chunk a rating, or importance can be inferred from download statistics. In some embodiments, the end-user device determines the importance of a chunk based on observations of the behavior of the device's user. The end-user device can send its locally gathered behavioral observations to a server to enhance that server's demographic information. The server can observe its own download behavior to infer importance. The end-user device may choose to either not download, or to download at a low resolution, those chunks deemed to be unimportant, thus saving bandwidth and battery power.