Abstract: The present invention provide a method for determining a timing advance TA, and a method and a device for transmitting information, including: receiving downlink signal characteristic information of each transceiver node in a first transceiver node set in a cell accessed by a terminal, where the first transceiver node set includes one or more transceiver nodes; detecting, according to the downlink signal characteristic information of each transceiver node in the first transceiver node set, time at which a downlink signal transmitted by each transceiver node in the first transceiver node set arrives at the terminal; and determining, according to the time at which the downlink signal transmitted by each transceiver node in the first transceiver node set arrives at the terminal, a timing advance TA for transmitting an uplink signal to each transceiver node in the first transceiver node set.

Abstract: A system and method for transmitting and receiving acknowledgement information are provided. A method for communications device operations includes determining a hybrid automatic repeat request (HARQ) response for each component carrier (CC) in a set of CCs configured by higher layer signaling, thereby producing a set of HARQ responses; generating an information vector from the set of HARQ responses, encoding the information vector; and transmitting the encoded information vector. The information vector comprises one or more bits respectively corresponding to a CC in the set of CCs. A bit is assigned a fixed value if HARQ response of a corresponding CC is set to DTX in response to no transmission detected over the CC.

Abstract: Method and apparatus are provided for mapping and detecting a control channel. For the same aggregation level, according to a signaling length of a control channel corresponding to a component carrier, a corresponding search space is determined for at least two control channels that have the same signaling length, so as to enable the at least two control channels that have the same signaling length to use the same search space. The at least two control channels having the same signaling length are mapped to the determined corresponding search space. Therefore, conflicts between the control channels are reduced, and the number of times of blind detection of the control channels is also reduced.

Abstract: A system and method for signaling and transmitting uplink reference signals are provided. A method for communications controller operations includes signaling information about a set of sequence groups to a first communications device, where the first communications device uses a sequence in the set of sequence groups to modulate a reference signal. The method also includes selecting a sequence group from the set of sequence groups and signaling information about the selected sequence group to the first communications device.

Abstract: A method for operating a user equipment includes receiving a set of first random access channel (RACH) parameters associated with a first group of identifiers, and wherein identifiers in the first group of identifiers are used for generating pseudo-random sequences, and performing a random access procedure in accordance with the set of first RACH parameters and the first group of identifiers.

Abstract: The present invention discloses a method which includes: allocating, by an eNodeB, a dedicated resource region for a relay served by the eNodeB; calculating, by the eNodeB, a control channel of the relay; configuring, by the eNodeB according to the resource region allocated for the relay and the acquired control channel of the relay, the control channel of the relay in the resource region corresponding to the relay; and detecting, by the relay, control information sent by the eNodeB in the corresponding resource region allocated by the eNodeB for the relay. The present invention solves the transmission problem of a backhaul link control channel in an LTE-A relay system, so that a relay can receive control information sent by the eNodeB within a wider scope and that the complexity of blind detection of the relay is decreased.

Abstract: A method and apparatus for allocating and processing sequences in a communication system is disclosed. The method includes: dividing sequences in a sequence group into multiple sub-groups, each sub-group corresponding to its own mode of occupying time frequency resources; selecting sequences from a candidate sequence collection corresponding to each sub-group to form the sequences in the sub-group by: the sequences in a sub-group i in a sequence group k being composed of n sequences in the candidate sequence collection, the n sequences making a |ri/Ni?ck/Np1| or |(ri/Ni?ck/Np1) modu mk,i| function value the smallest, second smallest, till the nth smallest respectively; allocating the sequence group to cells, users or channels. It prevents the sequences highly correlated with the sequences of a specific length from appearing in other sequence groups, thus reducing interference, avoiding the trouble of storing the lists of massive sequence groups.

Abstract: A method and apparatus for allocating and processing sequences in a communication system is disclosed. The method includes: dividing sequences in a sequence group into multiple sub-groups, each sub-group corresponding to its own mode of occupying time frequency resources; selecting sequences from a candidate sequence collection corresponding to each sub-group to form the sequences in the sub-group by: the sequences in a sub-group i in a sequence group k being composed of n sequences in the candidate sequence collection, the n sequences making a |ri/Ni?ck/NP1| or |(ri/Ni?ck/NP1) modu mk,i| function value the smallest, second smallest, till the nth smallest respectively; allocating the sequence group to cells, users or channels. It prevents the sequences highly correlated with the sequences of a specific length from appearing in other sequence groups, thus reducing interference, avoiding the trouble of storing the lists of massive sequence groups.

Abstract: A method for multiple point communications includes configuring a set of first communications system resources to form a plurality of first communications system resource groups, each first communications system resource group including a plurality of channels, and configuring a set of second communications system resources for each one of the plurality of first communications system resource groups, the set of second communications system resources used to convey a feedback transmission. The method also includes signaling information about the plurality of first communications system resource groups to a first user equipment, and signaling information about the sets of second communications system resources associated with the plurality of first communications system resource groups to the first user equipment.

Abstract: A resource allocation method, a network device and a wireless system are disclosed. The method includes: sorting Resource Blocks (RBs) used by a terminal of a first system and a terminal of a second system according to a use situation of the RBs used by the terminal of the first system and the terminal of the second system; and allocating the sorted RBs. When some RBs are available to a Long Term Evolution (LTE) terminal, coexistence of an LTE-Advanced (LTE-A) terminal and the LTE terminal is enabled, and compatibility between the LTE-A terminal and the LTE terminal is ensured.

Abstract: A method and apparatus for allocating and processing sequences in a communication system is disclosed. The method includes: dividing sequences in a sequence group into multiple sub-groups, each sub-group corresponding to its own mode of occupying time frequency resources; selecting sequences from a candidate sequence collection corresponding to each sub-group to form the sequences in the sub-group by: the sequences in a sub-group i in a sequence group k being composed of n sequences in the candidate sequence collection, the n sequences making a |ri/Ni?ck/Np1| or |(ri/Ni?ck/Np1) modu mk,i| function value the smallest, second smallest, till the nth smallest respectively; allocating the sequence group to cells, users or channels. It prevents the sequences highly correlated with the sequences of a specific length from appearing in other sequence groups, thus reducing interference, avoiding the trouble of storing the lists of massive sequence groups.

Abstract: A method for determining a search space includes determining the number of downlink control information bits of each type of control channel currently required to be monitored by a UE. A temporary search space corresponding to the each type of control channel is determined according to a mapping relationship currently used by the UE. It is determined that an actual search space corresponding to a selected type of control channel is all or a part of CCEs of a union of temporary search spaces corresponding to all or a part of control channels with the same number of the downlink control information bits when the DCI bit number of one or more other control channels is the same as the DCI bit number of the selected type of control channel.

Abstract: A system and method for transmitting and receiving acknowledgement information are provided. A method for communications device operations includes determining a hybrid automatic repeat request (HARQ) response for each CC in a set of configured CCs, thereby producing a set of HARQ responses, generating an information vector from the set of HARQ responses, encoding the information vector, and transmitting the encoded information vector. A sub-vector of one or more bits selected from the information vector is assigned a fixed vector value independent of HARQ responses for CCs not in a set of CCs when the set of CCs is not empty, where the set of CCs comprises at least one CC whose HARQ response is equal to DTX.

Abstract: A method and a device for determining a search space and for determining candidate control channel resources are provided in present invention. The method for determining the search space includes: determining the number of downlink control information bits of each type of control channel currently required to be monitored by a UE; determining a temporary search space corresponding to the each type of control channel according to a mapping relationship currently used by the UE; and determining that an actual search space corresponding to a selected type of control channel is all or a part of CCEs of a union of temporary search spaces corresponding to all or a part of control channels with the same number of the downlink control information bits, when the DCI bit number of one or more other control channels is the same as the DCI bit number of the selected type of control channel.

Abstract: A system and method for mapping and decoding codewords in acknowledgement information communications are provided. A method for communications device operations includes determining a hybrid automatic repeat request (HARQ) response for each component carrier (CC) in a set of configured CCs, thereby producing a set of HARQ responses, generating an information vector from the set of HARQ responses, encoding the information vector based on a (n, k) linear block code corresponding to the set of configured CCs, and transmitting the encoded information vector. A unique set of bits selected from the information vector is assigned to represent a HARQ response for each different CC in the set of configured CCs. The (n, k) linear block code is obtained by a linear transformation of an original (n, k) linear block code, where n is a length of code words, and k is a length of information vectors.

Abstract: In one embodiment, a method for wireless communication includes receiving a channel feedback information from a user equipment at a base station. A control channel is allocated in a data region of a subframe as indicated by the channel feedback information. The control channel within the subframe is transmitted to the user equipment.

Abstract: A system and method for reducing interference are provided. A method for communications controller operations in a multi-carrier system includes generating information for a broadcast channel, preparing the information for transmission, selecting a location for an unoccupied subcarrier from a plurality of available locations, and placing the prepared information into a plurality of contiguous subcarriers, where the plurality of contiguous subcarriers includes the unoccupied subcarrier and a plurality of other subcarriers. The method also includes transmitting the plurality of contiguous subcarriers.

Abstract: A system and method for signaling and transmitting uplink reference signals are provided. A method for communications controller operations includes signaling information about a set of sequence groups to a first communications device, where the first communications device uses a sequence in the set of sequence groups to modulate a reference signal. The method also includes selecting a sequence group from the set of sequence groups and signaling information about the selected sequence group to the first communications device.

Abstract: A base station (e.g., an evolved Node B) determines whether the physical broadcast channel (PBCH), reference signals (SCH) and common reference signals (CRS) are transmitted (or awaiting transmission) on a secondary component carrier (Scell) with the cell. The determination information is transmitted to a user equipment (UE) to inform the UE that the Scell transmissions do not include PBCH/SCH/CRS. As a result, the resource elements (REs) normally used to carry system information in the PBCH/SCH/CRS can be dynamically assigned (or reassigned) to the data channel. In this manner, the physical downlink shared channel (PBSCH) bandwidth can be increased by utilizing those resource elements that are normally reserved/assigned to the PBCH/SCH/CRS.

Abstract: A method, a base station, a User Equipment (UE) and a system for sending and receiving Physical Downlink Control Channel (PDCCH) signaling are disclosed. The method for sending PDCCH signaling includes the following steps: the base station determines locations of a first search space and second search space; and the base station sends only PDCCH signaling exclusive of a Carrier Indication Field (CIF) to the UE in a physically overlapped region between the first search space and the second search space if the physically overlapped region exists and length of PDCCH signaling exclusive of a CIF in the first search space is equal to length of PDCCH signaling inclusive of a CIF in the second search space.