摘要:
System and method for processing received packets. A QuickNak (QN) packet may be received. The QN packet may include a segmentation and reassembly (SAR) packet. The SAR packet may be delivered to a SAR receiver and it may be determined if there are missing packets, e.g., after delivery of the SAR packet. If there are missing packets, a QN indication may be generated and provided to the SAR receiver. Alternatively, the SAR receiver may receive the SAR packet with the QN indication. Accordingly, the SAR packet may be stored in a reception buffer or delivered to an upper layer, e.g., depending on current state variables. The SAR receiver may update the state variables and determine if there are missing packets. If there are missing packets, the SAR receiver may deliver an indication of the missing packets.
摘要:
A common signaling channel (CSC) conveys signaling information units (SIUs) from a base station (BS) to each of a multiplicity (e.g., 1200) of different mobile stations (MSs). Implicit correspondence between particular CSC and data frames is facilitated by basing CSC frame duration on the data frame period. CSC frames are time multiplexed into K subframes, which are code division multiplexed (CDM) into J CDM branches to define J*K SIUs. CDM symbols (or sequences) representing each SIU may be diversely transmitted in different time slots, and/or using different OVSF codes or subchannels. Unique gain may be provided for each SIU. Subframe duration may ensure CDM code orthogonality despite fading. CDM symbol length may be an integer power of two, or have other values, such as 2N*20 (e.g., 80). SIUs are typically relevant to BS-MS data packets, for example ACKs supporting H-ARQ for reverse link transmissions.
摘要:
A wireless access terminal is configured to enter into a freeze state where the wireless access terminal temporarily stops decoding an receiving data for a first access network, when the wireless access terminal's modem tunes away from the first access network to monitor signals form a second access network. When the modem tunes back, the wireless access terminal continues processing signals form the first access network without re-initializing with the first access network. When the terminal enters the freeze state, state variables for the terminal's various protocols, including layer 1, layer 2, and modem controller protocols can be stored so that the protocols can continue processing when the modem tunes back, without the need to reinitialize.
摘要:
The present invention concerns an apparatus comprising a logic circuit, a compare circuit, a control circuit and a memory interface. The logic circuit may be configured to generate a check signal in response to (i) a data signal having a series of logical transmission units (LTUs) and (ii) a first control signal. The compare circuit may be configured to generate a compare signal in response to the check signal and the data signal. The control circuit configured to generate (i) the first control signal and (ii) a second control signal indicating a valid or invalid status of each of the LTUs, in response to a data valid signal and the compare signal. The memory interface may be configured to generate an output data signal in response to the second control signal. The memory interface is generally configured to store only the LTUs having a valid status.
摘要:
A system and method for computing A mod (2n−1), where A is an m bit quantity, where n is a positive integer, where m is greater than or equal to n. The quantity A may be partitioned into a plurality of sections, each being at most n bits long. The value A mod (2n−1) may be computed by adding the sections in mod(2n−1) fashion. This addition of the sections of A may be performed in a single clock cycle using an adder tree, or, sequentially in multiple clock cycles using a two-input adder circuit provided the output of the adder circuit is coupled to one of the two inputs. The computation A mod (2n−1) may be performed as a part of an interleaving/deinterleaving operation, or, as part of an encryption/decryption operation.
摘要:
An apparatus comprising a circuit configured to be tested and a plurality of test blocks within the circuit. Each of the test blocks generally comprises (i) a plurality of sequential elements and (ii) a plurality of logic elements. Each of the test blocks are configured to operate (a) in a first mode comprising a shift mode and (b) a second mode comprising a capture mode. The shift mode generally operates with multiple scan clocks that are clocked simultaneously. The capture mode generally operates with multiple scan clocks, but only one of which is toggled at a time.
摘要:
A method for eliminating useless waiting for lost data units in a segmentation and reassembly (SAR) receiver operation is disclosed. The SAR receiver checks for any missing data units upon receiving a transmission of a plurality of data units in a predetermined sequence, storing all received data units following a first missing data in the SAR receiver, starting an abort timer for every missing data unit and delivering the stored data units between a first missing data unit and a second missing data unit if the abort timer for the first missing data unit has expired and the abort timer for the second missing data unit has not expired.
摘要:
A method and system is disclosed for detecting paging indicators using a multi-stage and multi-threshold detection mechanism so that a mobile terminal can be removed from an idle mode appropriately. After receiving a first paging indicator, it is determined whether a first indicator measurement corresponding to the first paging indicator is between a first and a second predetermined thresholds. After receiving a second paging indicator which may be a temporal diversity counterpart of the first paging indicator, a second indicator measurement derived based on both the first and second paging indicators is compared against a third predetermined threshold, wherein the mobile terminal is removed from the idle mode when both comparisons are appropriately conducted.
摘要:
A novel method and apparatus for applying overlaid perturbation vectors for gradient feedback transmit antenna array adaptation is disclosed. The method and apparatus of the present invention allows a communication system to reduce transmit power that is associated with dedicated pilot signals by overlaying perturbation vectors and measuring channel estimates and demodulation channel estimates during a measurement time interval that comprises a plurality of feedback time intervals. The present inventive method utilizes channel estimates that include the effects of previous perturbation vectors, subsequent feedback vectors and intermediate feedback decisions. The inventive method extracts a coarse gradient estimate by utilizing a continuous summation of overlaid weight vector perturbation vectors and updates the weighting vector accordingly.
摘要:
A method and apparatus is described, by means of which a host data communication device obtains the effects of a desired data communication protocol, such as flow control, that may not be supported by a client device. To obtain the effects of the desired protocol, the host invokes a different protocol supported by the client, for example retransmission, by presenting an appropriate protocol-initiation signal, for example by asserting an error bit on a bidirectional connection to the client. Invoking the supported protocol repetitively, if necessary, the host interprets the client response to the invocation to achieve substantially the same effect as the desired protocol. Thus, a repetitive retransmission request by the host may have the effect of a flow hold request.