摘要:
This invention concerns both small delay CDD codeword cycling and codeword cycling between different re-transmissions of both small and large delay CDD. In addition, an open-loop codeword cycling method for space-frequency block coding, as well as its extension to hybrid ARQ are proposed. In one method, a plurality of information bits are encoded, scrambled and modulated to generate a plurality of modulated symbols. The plurality of modulated symbols is mapped onto the subcarriers in at least one transmission layer of a transmission resource. The modulated symbols are then precoded by using a matrix for cyclic delay diversity and a set of codewords from a certain codebook to generate a plurality of precoded symbols. The codewords are cycled for every N subcarriers. Finally, the precoded symbols are transmitted via a plurality of transmission antennas.
摘要:
The present invention provides a terminal device that allows constraints on user allocation to be prevented and spread codes to be allocated in a scheduler when non-adaptive HARQ is employed using a PHICH. A codeword generator (103) generates code words (CW) by encoding data, a layer mapping unit (108) places each CW in one or a plurality of layers, a DMRS generator (110) generates a reference signal for each layer in which a CW is placed by using any resource among a plurality of resources defined by a mutually orthogonal plurality of OCCs, and an ACK/NACK demodulator (102) receives a response signal indicating a retransmission request. When a response signal requesting retransmission of only a CW placed in a plurality of layers is received, the DMRS generator (110) uses each resource having the same OCC among the plurality of resources for the reference signals generated in the corresponding layers.
摘要:
The invention relates to methods for improving a scheduling request transmission between a UE and a base station. The transmission of the scheduling request is postponed, by implementing a threshold that the data in the transmission buffer has to reach, before a transmission of the scheduling request is triggered. In one variant, the data in the transmission buffer needs to reach a specific amount, to trigger a scheduling request. The invention refers to further improvements: the PDDCH monitoring time window is delayed after sending a scheduling request; the dedicated scheduling request resources of the PUCCH are prioritized differently such that low-priority scheduling requests are transmitted less often.
摘要:
The present invention relates to transmitting and receiving data in a multicarrier communication system in which the transmission and reception is performed on a transmission time interval basis. In particular, dynamic bundling of transmission time intervals is dynamically configurable for each scheduling assignment. The dynamic bundling may be applied in uplink and/or in downlink transmission between a terminal and a network node.
摘要:
A method of transmitting/receiving a packet using a hybrid automatic repeat request in the mobile communication system is disclosed. The packet data transmitting method includes transmitting at least one sub packet divided from plurality of encoded packets generated by repeating a bit stream that is made by encoding information desired to be transmitted with 1/5 rate turbo encoder, and transmission start point information of the sub packet through the sub packet identifier field on the accompanying control channel.