Abstract:
An enhanced mechanism for the reverse link power control in a wireless communication system, especially for high speed data applications and fixed wireless communication applications, dynamically adjusts the power control step size of the reverse link power control. The power control step size is dynamically adjusted based on various factors including types of service, number of reverse supplemental code channels, total received power at the base station, estimated diversity gain and required mobility, among others. The system which includes stationary infrastructure, can query a subscriber unit's capability in the support of a pre-defined set of power control step sizes before assigning it to the subscriber unit. Furthermore, the subscriber unit may decide its optimized power control step size based on certain feedbacks from the system. In a specific embodiment, enhancement to the ANSI EIA/TIA-95 system is provided such that it supports a variable subscriber unit power control step size and associated signaling in accord with this invention.
Abstract:
A mobile station having a Voice-Over-Internet-Protocol client sends a message proposing a frame packing and frame repeating parameter set (1001). The called client may either accept the proposal or offer a revision (1003). If accepted the VoIP call is established (1009). If a revised proposal is received, it is determined whether the parameters are acceptable (1005). If not the call is declined (1007). If acceptable the call may proceed (1011). Both clients may then monitor network conditions (1013) and propose revisions to the parameters as conditions change. In this way, the VoIP application layer compensates for physical and Medium Access Control (MAC) layer inefficiencies in transporting the small frames used for audio data transfer for VoIP.
Abstract:
A process is provided whereby organic carbonyl substrates, including esters, lactones, ketones, amides and imides are reduced in a reaction with a silane reducing reagent and a catalyst. Exemplary catalysts include metal alkoxides and metal aryloxides.
Abstract:
A mobile station having a Voice-Over-Internet-Protocol client sends a message proposing a frame packing and frame repeating parameter set (1001). The called client may either accept the proposal or offer a revision (1003). If accepted the VoIP call is established (1009). If a revised proposal is received, it is determined whether the parameters are acceptable (1005). If not the call is declined (1007). If acceptable the call may proceed (1011). Both clients may then monitor network conditions (1013) and propose revisions to the parameters as conditions change. In this way, the VoIP application layer compensates for physical and Medium Access Control (MAC) layer inefficiencies in transporting the small frames used for audio data transfer for VoIP.
Abstract:
A new access channel protocol for use in cellular systems such as CDMA whereby the data transfer efficiency of an access message is increased by removing the requirement that a preamble frame and a message capsule frame have equal times of duration. With such removal, the BTS must inform listening MSs as to the time duration of the frames in each of the preamble and the message portions of the access channel time slot in addition to previously supplied information as to the number of frames in each portion. When unequal frame duration times are allowed, each portion of the access channel may be more nearly optimized to the actual time required to perform the functions of synchronization and message detection.
Abstract:
A CDMA communication system supports designated mode data bursts on a reverse link contention based channel from a subscriber unit to a base station. The reverse link contention based channel also supports contention-based transmissions from the subscriber unit to the base station. When transmissions are scheduled and serviced in the designated mode data burst, collisions are avoided. Further, because setting up the designated mode data bursts on the reverse link contention based channel require little overhead as compared to the setup of a traffic channel the CDMA system is operated at a greater efficiency. The reverse link contention based channel may be a Reverse Common Control Channel, a Reverse Access Channel or another contention-based channel. Designated mode data bursts on the reverse link contention based channel may consume a single slot or multiple slots. The number of slots consumed in the designated mode data bursts depends upon the volume of data the subscriber unit has to transmit to the base station. The subscriber unit may state the amount of data it desires to transmit in the designated mode data burst. Based upon this stated amount, the base station may reserve multiple slots for the designated mode data burst. Then, the subscriber unit will transmit data during the slots.
Abstract:
Disclosed are methods and devices for a social networking device 102. The methods include calculating a value for a social networking index 460 for contacts in a contact list 103, and prioritizing a subset of contacts 462. IP addresses of contacts retrieved 468 from the Internet according to the social networking index can be preloaded 470 for the initiation of an IP based communication 474. The social networking index is generated from values of predetermined statistics 130 associated with contacts of the contact list. The statistics associated with contacts of a contact list include 464 a number of communications with a contact, a statistical value calculated from lengths of communications with a contact, a time since a last communication with a contact and a statistical value calculated from times between at least two consecutive communications with a contact. Calculating a social networking index 460 can include applying weights 466 with which to combine the values of the predetermined statistics.
Abstract:
A CDMA communication system supports designated mode data bursts and contention-based transmissions on a reverse link common channel from a subscriber unit to a base station. When transmissions are scheduled and serviced in the designated mode data burst, collisions are avoided. The number of slots consumed in the designated mode data bursts depend upon the volume of data the subscriber unit has to transmit to the base station. A common power control channel provides power control bits and reservation indications for at least one reverse link common channel for closed loop reverse link power control on the common channels.