摘要:
The disclosure relates to a method for a user equipment to report a transmission power capability to an e Node B. The user equipment operates in carrier aggregation. The method comprises determining, by the user equipment, that the transmission power capability of at least one power amplifier of the user equipment reaches at least one defined threshold, and triggering a generation of a power headroom report based on the determining step. The disclosure also relates to the corresponding user equipment and e Node B.
摘要:
A method of generating random access preambles includes receiving information on a source logical index and generating random access preambles in the order of increasing cyclic shift from root ZC sequences with the consecutive logical indexes from the beginning of the source logical index until a predetermined number of the random access preambles are found, wherein the consecutive logical indexes are mapped to root indexes of the root ZC sequences.
摘要:
Selective DRX method on multiple CCs for a UE (320), at least one CC being configured with a PDCCH received from a base station (310) and arranged for scheduling resources on a physical shared channel to the UE on said at least one CC respectively and/or on at least one other CC, each CC having a respective active time during which the UE monitors or would monitor the reception of a PDCCH on said CC respectively if said CC is or was configured with a PDCCH. It is determined whether at least one CC is configured with a PDCCH arranged for scheduling resources on at least one other CC. If it is, the active time of said at least one CC is adjusted to the longest active time of said at least one CC and said at least one other CC. Otherwise, independent active times are maintained for all CCs respectively.
摘要:
An improved method of processing random access procedures, wherein the network receives at least one access burst to allow a network to estimate uplink received timing, the access burst containing at least a preamble, and transmits information for responding to the at least one access burst, while the mobile terminal configures at least one access burst containing at least a preamble and transmits the at least one access burst to allow a network to at least estimate uplink received timing.
摘要:
A method and apparatus for enhancement of the random access procedure of a Long-Term Evolution (LTE) system are provided. Enhancements include modeling one cycle in the random access procedure since only one counter is necessary and controlling the delay prior to the preamble transmission in order to reduce conflicts by multiple mobile terminals using the random access channel.
摘要:
A method for establishing a cyclic shift sequence to provide against the frequency offset is disclosed. The method calculates a distance between a channel response position of the sequence and an alias channel response position caused by a frequency offset, calculates the number of cyclic shifts per group according to the calculated distance, and establishes the cyclic shift (CS)—applying interval. This method easily establishes a cyclic shift (CS) interval at a specific location having no overlapping by considering a channel response of a reception (Rx) sequence and an alias location of this reception (Rx) sequence, although a reception (Rx) signal is shifted by a channel delay spreading or a propagation delay irrespective of categories of a domain generating a sequence, so that it can greatly reduce the number of the detection errors and the false alarm rate. And, if a sequence of the cyclic shift (CS) is allocated to a cell having a frequency offset of more than a predetermined level, the present invention can minimize the influence of a frequency offset on a high-mobility cell.
摘要:
The disclosure relates to a method for managing aggregation of component carriers between an e Node B and a user equipment, which comprises providing a first set of configured component carriers and a second set of activated component carriers. The disclosure also relates to the corresponding e Node B and user equipment.
摘要:
Methods for allocating and choosing dedicated signatures for random access are provided. Options for allocating dedicated signatures include allocating the dedicated signatures from unused space of a random signature root index when there is unused space and allocating more dedicated signatures from the same root index using the same time/frequency resources if additional signatures are needed, and reserving some preambles from contention-based random access preambles from both sets of preambles. The dedicated signatures may be reserved in each of two sets of preambles.
摘要:
A method of generating random access preambles includes receiving information on a source logical index and generating random access preambles in the order of increasing cyclic shift from root ZC sequences with the consecutive logical indexes from the beginning of the source logical index until a predetermined number of the random access preambles are found, wherein the consecutive logical indexes are mapped to root indexes of the root ZC sequences.
摘要:
A method for establishing a cyclic shift sequence to provide against the frequency offset is disclosed. The method calculates a distance between a channel response position of the sequence and an alias channel response position caused by a frequency offset, calculates the number of cyclic shifts per group according to the calculated distance, and establishes the cyclic shift (CS)-applying interval. This method easily establishes a cyclic shift (CS) interval at a specific location having no overlapping by considering a channel response of a reception (Rx) sequence and an alias location of this reception (Rx) sequence, although a reception (Rx) signal is shifted by a channel delay spreading or a propagation delay irrespective of categories of a domain generating a sequence, so that it can greatly reduce the number of the detection errors and the false alarm rate. And, if a sequence of the cyclic shift (CS) is allocated to a cell having a frequency offset of more than a predetermined level, the present invention can minimize the influence of a frequency offset on a high-mobility cell.