摘要:
A battery saving interval utilized for communicating with a portable subscriber unit (122) in a radio communication system is dynamically adjusted. An occurrence of a predetermined triggering event associated with the portable subscriber unit is observed (504), and the battery saving interval utilized for communicating with the portable subscriber unit is adjusted (506) in response to the predetermined triggering event, while battery saving intervals of other portable subscriber units in the system are left unchanged.
摘要:
The generic activation method of a selective call receiver apparatus (122) operating within a messaging system (100) includes providing a selective call receiver (122) having a group address (251) and a unique receiver identification (242) stored in a memory (218). The selective call receiver (122) receives a message addressed to the group address (251) containing the unique receiver identification (242) and programming information (249), and upon receiving the group address (251) and unique receiver identification (242), the method applies the programming information (249) to program the selective call receiver (122).
摘要:
Methods of and corresponding apparatus for scheduling messages on an operating channel (223) in a selective messaging system (200) for a messaging unit (235) include scheduling a first message, including a channel priority indication (511), addressed to the selective messaging unit on a first channel, and then scheduling a second message for the selective messaging unit on a second channel (225) selected as an alternative operating channel. Analogously at the selective messaging unit a method of selecting an operating channel includes monitoring the first channel for a message addressed to the selective messaging unit; detecting as part of the message the indication; and responsive thereto discontinuing monitoring the first channel and then scan for the second channel.
摘要:
A method of decoding a repeat message made up of repeat message fragments at a selective call receiver (122) using a synchronous wireless protocol having time diversity includes the step of decoding (212) a repeat address N times corresponding to the repeat message. Each of the repeats of the address points to a separate repeat of an encoded vector N times wherein each of the repeats of the encoded vector explicitly points to the beginning of a first of the repeated message fragments. The method further includes the step of decoding (212) the repeated message fragments M times which was received on preassigned time slots.
摘要:
A system controller (105), and analogous method, for a two way selective messaging system (100) that is arranged to reduce traffic on a network channel (109) that intercouples a plurality of base receivers (115-118, 125-128) includes a source port (303) for receiving a message from a message source, a memory (305) for storing a data base including an activity pattern of the plurality of base receivers, a processor (307), coupled to the source port and the memory for selecting an inbound schedule for a response from a selective messaging unit (131) where the inbound schedule is selected to reduce traffic, corresponding to the inbound schedule, on the network channel, and a transmit port (107) for sending the message along with the inbound schedule to a transmitter (111). A two way selective messaging unit (131), and analogous method, includes a memory (413) for storing a preferred transmitter ID and an activity pattern corresponding to a set of base receivers associated with the preferred transmitter, a controller (411), coupled to the memory, for selecting an inbound schedule for delivery of a message where the inbound schedule is selected to reduce traffic on the network channel, and a transmitter (407) for transmitting the message in accordance with the inbound schedule.
摘要:
A messaging device for receiving a plurality of messages that have a relevancy status includes a selective call receiver (22) for receiving the plurality of messages, the relevancy status, and updates to the relevancy status, a memory (30) for storing at least a portion of the plurality of messages and the updates to the relevancy status and a processor (24, 40 and 28) for processing the portion of the plurality of messages that have received updates to the relevancy status. The relevancy status is ideally a location identifier and could additionally include a valid time indication.
摘要:
A processing system time compresses a voice message before transmission, and processing system time expands the message after reception. To process the message the processing systems perform at least one of: (a) randomizing the order of a sequence of samples form a silent portion of the message after reception thereof before blending the sequence with a last portion of the expanded message; (b) selecting the sequence of samples from the silent portion of the message after reception thereof, the sequence selected being poorly correlated with the last portion of the expanded message, before blending the sequence with the last portion of the message; and (c) compressing the dynamic range of the message before transmission, by an amount dependent upon the signal-to-noise ratio of the message, and aggressively expanding the dynamic range of the message after reception, by a fixed amount.
摘要:
A selective call messaging system delivers (602, 604, 606) a master message (324) addressed to a first group of subscriber units (102) and a corresponding records message (326) addressed to a second group of subscriber units. The records message comprises a record (514). A subscriber unit of the second group presents (736) a subscriber-customized group message (332) to a user. The subscriber-customized group message is formed (722, 726, 730, 734) from the master message and from at least one of the record, and local information (328) stored in the subscriber unit.
摘要:
In a data communication system a first controller (102) selectively retrieves data from a database (316) in a second controller (106). Data corresponding to a plurality of entities is programmed (602) into the database. The data includes a plurality of parameters for each of the plurality of entities. Ones of the plurality of parameters are selectively defined (604) to belong to parameter groups in accordance with a predetermined grouping plan. The first controller generates (612) a request for the data corresponding to one of the plurality of entities from the database, the request further indicating a desired one of the parameter groups. The second controller returns (620) the desired one of the parameter groups corresponding to the one of the plurality of entities, in response to the request.
摘要:
A method and apparatus transmits (400, 500) and receives (600) information as a power hopped direct sequence spread spectrum signal. The information is encoded (402) with a predetermined spreading sequence to produce a direct sequence spread spectrum, or DSSS, signal, and a plurality of simultaneous radio signals operating on a plurality of frequency slots (F.sub.1 -F.sub.10) and modulated by the DSSS signal are generated (404, 406, 504). The output power of individual ones of the plurality of simultaneous radio signals is adjusted (408, 502) periodically according to a predetermined power hopping sequence. The information is received by demodulating (602) and processing (604-620) the signal from at least one of the plurality of frequency slots.