摘要:
Techniques for retransmitting data via RLP in a CDMA (e.g., cdma2000) system with a first retransmission mechanism provided by the RLP and a second retransmission mechanism provided by an HARQ-CF. In one method, missing RLP frames are first detected (e.g., by a receiver RLP). A dynamic timer is then maintained (e.g., by a receiver HARQ-CF) for each RLP frame detected to be missing. The dynamic timers are event-driven and have variable time durations. Each dynamic timer is updated based on events known to the receiver HARQ-CF. Fixed timers with fixed time durations may also be maintained (e.g., by the receiver RLP) for the missing RLP frames. Whether or not a missing RLP frame is lost is determined based on the dynamic timer and the fixed timer (if any) maintained for the RLP frame. A NAK may be issued for retransmission of each RLP frame deemed to be lost.
摘要:
Methods and apparatus are presented for acknowledging broadcast transmissions. An acknowledgment channel is designed for acknowledging the success or failure of a transmission on a dedicated channel and on a broadcast channel. Acknowledgments are generated based on whether a new orthogonal space is sent to a remote station or not. Moreover, an acknowledgment to the broadcast transmission is generated when an acknowledgment is needed for a dedicated transmission. The two acknowledgments are combined and sent to a base station.
摘要:
An apparatus and method for communications of scheduling information of reverse link transmissions are disclosed. A base station controller determines scheduling of a reverse link supplemental channel transmission for a mobile station in a communication system (100). The base station controller groups the mobile station in a group of mobile stations and assigns a forward link channel assignment channel to the group of mobile stations. A transceiver (400) incorporates information relating to the determined scheduling in the assigned forward link common assignment channel and transmits the assigned forward link common assignment channel to the mobile station for scheduling the reverse link supplemental channel transmission. The mobile station receives the assigned forward link common assignment channel. The mobile station schedules transmission of the reverse link supplemental channel transmission in accordance with the determined scheduling and transmits the reverse link supplemental channel in accordance with the determined scheduling.
摘要:
Methods, apparatus, and computer program products for processing an RLC PDU having an RLC payload and an RLC header, wherein the RLC payload comprises a plurality of at least partially ciphered SDUs, each of the SDUs being either a partial or complete SDU, and wherein the RLC header comprises a separate count for each of the SDUs, each of the counts being configured to support deciphering of the corresponding SDU. Each SDU is a PDCP PDU having a PDCP payload and a PDCP header, wherein the PDCP payload comprises a plurality of IP packets, and wherein the PDCP header comprises a length indicator for at least one of the IP packets.
摘要:
A method, apparatus, and computer program product for wireless communication are provided in which a determination is made of a first power available for transmitting a first signal using a first radio access technology while simultaneously transmitting a second signal using a second radio access technology different from the first radio access technology. An uplink grant is received and a determination is made regarding a second power for transmitting the first signal on uplink using the first radio access technology based on the uplink grant. A determination is made regarding a difference between the first power and the second power. Information related to the difference is reported via the first radio access technology based on a trigger. The reporting information is triggered when the change of a power backoff from a last report exceeds a selected threshold.
摘要:
Methods, systems, devices, and computer program products are disclosed which facilitate the transmission and reception of power headroom reports for component carriers in a multi carrier wireless communication system. A mobile device may determine available power headroom in a multicarrier configuration through a calculation of a maximum transmit power associated with a first component carrier (CC) in a subset of the CCs. The calculation can account for increases in transmit power of other component carriers in the subset by proportionally increasing transmit powers for each of the subset of CCs. A power headroom may be identified for one or more of the CCs based on a result of the calculation, and a power headroom report (PHR) may be generated that includes the power headroom available for the first CC.
摘要:
Systems and methodologies are provided that facilitate security activation for wireless communications. In an aspect, a method for wireless communication is provided which includes determining a first security key for communicating with a source access point and receiving, from the source access point, a handover command that includes an indication of whether to apply a second security key upon handover. The method also includes handing over communication from the source access point to a target access point, where the second security key is applied for communicating with the target access point upon the handover when the handover command indicates to apply the second security key.
摘要:
Systems and methodologies of reducing overhead by designating various fields in an optimized Radio Link Control header. Depending on communication type (e.g., VoIP, non-VoIP) such fields include a combination of a Segment Indicator (SI—which indicates presence of a whole SDU at beginning or at an ending), a Sequence Number (SN), a Length Indicator (LI—which indicates length of a service data unit); a length for the length indicator (LLI—to enable a variable size for the LI and notify a receiver regarding such varying size); a Segment Offset (SO—to designate resegmented packets for lost protocol data units); a length indicator for the SO (LSO—to enable a variable size for the SO); and Last Segment Flag (LSF—for resegmentation of RLC protocol data units).
摘要:
Security keys are typically needed to communicate with various network communication protocols of a mixed communication network. Herein, a protocol-specific key for a particular network communication protocol is generated based upon a result of a hash operation that includes a network key associated with the mixed communication network and information corresponding to the particular network communication protocol. Interoperability of multiple devices in the mixed communication network is made possible when the multiple devices generate (i.e. derive) protocol-specific keys using the same network key and common information corresponding to particular network communication protocols.
摘要:
Methods and apparatuses are provided that facilitate compressing packet headers for communicating among access points. An access point can advertise compression profiles to one or more disparate access points, and the one or more disparate access points can select at least one compression profile for compressing/decompressing packets related to the one or more disparate access points and/or devices communicating therewith. The one or more disparate access points can notify the access point of the selected compression profile, a compression context identifier, and/or static data related to identifying associated packets. In this regard, the access point can compress packets that have the associated static data according to the compression profile and compression context identifier. Similarly, the access point can decompress packets from the one or more disparate access points based on the compression context identifier.