摘要:
Methods of controlling peers of a relay ARQ protocol are described. It is proposed to provide a predetermined marking in the payload section of messages of the relay ARQ protocol, such that relay peers along the relay connections can extract information from the payload section.
摘要:
A technique of configuring link layer entities for a handover is described. In a method embodiment, the technique includes receiving from a recipient of protocol data units a supplemental status report for an existing ARQ connection in context with an imminent handover, determining service data units corresponding to buffered protocol data units taking into account information included in the supplemental report, and transferring the determined service data units to a link layer entity which is to establish a new ARQ connection to the recipient. The forced status synchronisation that is based on the supplemental report prevents the transfer of service data units that have already been successfully received at the recipient.
摘要:
A method is described for controlling a data unit receiver or a data unit sender. The data unit receiver or sender comprise a gap response procedure for responding to gaps in the sequence of data units received at the receiver. A reordering detection procedure S12 is provided for detecting a reordering indication indicative of a potential re-ordering of data units in the course of a transmission from sender to receiver, and the gap response procedure is adapted in response to detecting a re-ordering indication.
摘要:
A method and an apparatus for transmitting error-tolerant data is disclosed employing the ARQ technique, wherein the retransmission of erroneous data is performed up to the point where the remaining amount of errors is acceptable (for instance because the erorrs will not be perceived by the recipient of the information, which can be a person or a higher level protocol with additional error correction capabilities). The number of data blocks (RLC) detected as erroneous is employed to define a reliability measure (RM) and a request for retransmission of the erroneous data blocks is performed until a desired reliability threshold (RT) is reached. An additional threshold with a higher value than the first one can be employed to request for optional retransmission when the reliability measure (RM) is between the first and the second threshold. The retransmission will be performed only if further conditions such as channel availability are met.
摘要:
It is proposed to modify data unit handling on the side of a sender (e.g. a sending end-point or a proxy) by introducing congestion notification prevention information into data units, such that a queue buffer that implements a procedure for performing congestion notification with respect to one or more queued data units (e.g. dropping and/or marking data units with explicit congestion information) is capable of preventing the performance of a congestion notification at least with respect to the data units containing the congestion notification prevention information.
摘要:
A method of controlling the transmission of a sequence of data symbols over a connection provided by a predetermined communication layer, which method comprises modifying the transmission by identifying (S41) a reference data symbol in the sequence of data symbols, dividing (S42) the data symbol following the reference data symbol in the sequence of data symbols into a sequence of new data units on the basis of a new data unit generation scheme, generating (S43) a new sender-side transmission record by mapping sender-side transmission status information associated with data units in an old sender-side transmission record onto the new data units in accordance with a predetermined mapping scheme for sender-side transmission records, generating (S44) a new receiver-side transmission record by mapping receiver-side transmission status information associated with data units in an old receiver-side transmission record onto the new data units in accordance with a predetermined mapping scheme for receiver-side transmission records, and performing (S45) the transmission control of the new data units on the basis of the new sender-side transmission records, and performing the reassembling of data symbols on the basis of the new receiver-side transmission record.
摘要:
A flexible Radio Link Control (RLC) protocol for a mobile communication system is provided, whereby a plurality of different RLC functions are defined. These different RLC functions can be combined in a number of different ways to produce a complete and functional, but more flexible RLC protocol than the existing protocol. For example, a new set of rules are provided for determining how and/or when to poll for, or send, a status report for Automatic Repeat Request (ARQ) purposes. As such, for a specific service configuration, one set of the rules can be used, and for a different service configuration, another set of the rules can be used. In this way, the rules can be conformed suitably to the type of service involved.
摘要:
A method of adapting the output power of a radio transmitting entity within a cage having at least one aperture. The method includes the steps of providing at least one sensor to sense the condition of the at least one aperture and providing a controller to adjust the output power of the radio transmitting entity in accordance with the sensed condition of the at least one aperture.
摘要:
A method of operating a first access network and a second access network is provided, wherein said access networks serve mobile terminals in an access area and the method comprises: selecting one of said first access network and said second access network on the basis of a power consumption assessment; performing a steering operation for the mobile terminals in said access area, comprising sending steering information to the mobile terminals, the steering information indicating to the mobile terminals to preferably use the non-selected access network not being selected; and setting the selected access network to a power-save mode.
摘要:
In a method for the transmission of data packets (D) from a transmitter (TR) to a receiver (RE) identification of transmitted data packets are stored. Defective data packets (D) are detected by the receiver (RE), status messages (S) which request defective data packets for retransmission are sent from the receiver (RE) to the transmitter (TR) and retransmissions of requested data packets are performed according to the status messages (S). The transmitter (TR) evaluates a first status message (S11) with an identification of at least one first requested data packet and retransmits the first data packet. The transmitter (TR) then initializes a timing unit according to the retransmission of the first data packet, wherein the timing unit or a threshold for the timing unit is attributable to the first data packet. When the transmitter evaluates a further status message (S12) and detects at least one further data packet that is requested for a retransmission, it selects the further data packet if the timing unit has reached the threshold or if the identification of the further data packet is different from the identification of the first data packets. Only the selected data packets are retransmitted. A transmitter and software programs embodying the invention are also described.