Abstract:
A signal sending method, a signal receiving method, and a device are provided. A part that is of a first signal and that is carried on the kth subcarrier in the ith subcarrier group in N subcarrier groups is xi,nid(k), and a sequence {si,nid(k)} related to xi,nid(k) is one of enumerated sequences. The enumerated sequences are sequences with relatively good cross-correlation. Therefore, for two subcarrier groups, provided that selected {si,nid(k)} is two of the enumerated sequences, cross-correlation between signals carried in the two subcarrier groups can be ensured to be relatively good, thereby reducing interference between the signals and improving channel estimation performance.
Abstract:
A network device sends a first physical channel to user equipment on resources of one or more candidate physical channels. Correspondingly, the user equipment monitors one or more candidate physical channels in a candidate physical channel set, to receive the first physical channel on the resources of the one or more candidate physical channels. A payload of the first physical channel includes control information and a transport block, the control information includes first information, the first information is used to indicate an acknowledgment resource to the user equipment, and the acknowledgment resource is a resource used by the user equipment to send acknowledgment information to the network device. After receiving the first physical channel, the user equipment sends the acknowledgment information to the network device on the acknowledgment resource; and correspondingly, the network device receives the acknowledgment information on the acknowledgment resource.
Abstract:
An acknowledgement information sending method and apparatus is provided. A network device determines and sends downlink scheduling signaling, where the downlink scheduling signaling is used to schedule first downlink data to a terminal, the first downlink data is downlink data corresponding to acknowledgement information fed back on a same uplink control channel, and the downlink scheduling signaling is used to determine a first threshold, a second threshold, or a third threshold. The terminal receives the downlink scheduling signaling sent by the network device, determines, based on the first threshold, the second threshold, or the third threshold, the acknowledgement information corresponding to the first downlink data, and sends the acknowledgement information corresponding to the first downlink data to the network device on the same uplink control channel.
Abstract:
Embodiments of this application provide an information transmission method, a terminal device, and a network device. The method includes: receiving, by the terminal device, indication information sent by the network device, where the indication information includes information used to indicate content of M pieces of system information; receiving, by the terminal device, the M pieces of system information sent by the network device; determining, by the terminal device, at least two pieces of system information with same content in the M pieces of system information based on the indication information.
Abstract:
This application provides a sequence-based signal processing method and apparatus. A sequence meeting a requirement for sending a signal by using a physical uplink control channel (PUCCH) is determined, where the sequence is a sequence {fn} consisting of N elements, fn is an element in the sequence {fn}, and the determined sequence {fn} is a sequence meeting a preset condition; then, the N elements in the sequence {fn} are respectively mapped to N subcarriers to generate a first signal; and the first signal is sent. By using the determined sequence, when a signal is sent by using a PUCCH, a low sequence correlation can be maintained, and a relatively small peak-to-average power ratio (PAPR) value and cubic metric (CM) value can also be maintained, thereby meeting a requirement of a communication application environment in which a signal is sent by using a PUCCH.
Abstract:
A power allocation method and apparatus belong to the field of communications technologies. The method includes: determining, by UE, a first start time point of a first control subframe and a second start time point of a second control subframe; determining, based on the first start time point and the second start time point, whether a priority of a first target subframe is higher than a priority of a second target subframe; and if the priority of the first target subframe is higher than the priority of the second target subframe, allocating, based on first uplink channel information and second uplink channel information, power to the UE in a base station or a cell group in which the first target subframe is located, and allocating reserved power of the UE to the UE in a base station or a cell group in which the second target subframe is located.
Abstract:
The present invention relates to the field of communications technologies, and in particular, to a data scheduling method and apparatus, so as to resolve a problem that performing data scheduling on a data node by different evolved NodeBs participating in CA may cause a case in which a range supported by a processing capability of the data node is exceeded, or may cause a case in which the data node cannot fully leverage a processing capability of the data node. The method includes: sending, by the data node, scheduling limitation indication information to a first communications node; receiving, by the data node, data scheduling information that is sent by the first communications node to the data node; and sending, by the data node, uplink data to the first communications node, or receiving, by the data node, downlink data sent by the first communications node according to the data scheduling information.
Abstract:
The present invention provides an uplink power control method, user equipment, and a base station. The user equipment includes: a receiver, configured to receive first radio resource control protocol RRC configuration information sent by a first base station, where the first RRC configuration information includes a parameter used to calculate a power headroom PH that is of the UE and that is in a first cell controlled by the first base station; and a transmitter, configured to send second RRC configuration information to a second base station. The user equipment provided in the embodiments of the present invention is applicable to a scenario in which both RRC functions of two cells are controlled by means of RRC of one base station, and moreover, when two base stations use independent RRC, transmit power of the UE can also be effectively controlled, thereby improving uplink power control compatibility.
Abstract:
A method and an apparatus for allocating ACKnowledgement (ACK)/Non-ACKnowledgement (NACK) channel resources and processing confirmation information are disclosed. The method includes: The network side determines one physical channel area among multiple physical channel areas to be used by an ACK/NACK channel, and notifies the determined physical channel area to a User Equipment (UE) so as to enable the UE to determine a channel for receiving or sending ACK/NACK information in the determined physical channel area according to a mapping rule. Moreover, the network side may send or receive ACK/NACK information on the physical channel area that includes the ACK/NACK channel. The method and apparatus improve the utilization ratio and flexibility of the ACK/NACK channel, and reduce the probability of conflict generated by the ACK/NACK channel.
Abstract:
A sequence distributing and sequence processing method and apparatus in a communication system are provided. The sequence distributing method includes the following steps: generating sequence groups including a number of sequences, the sequences in the sequence groups are determined according to the sequence time frequency resource occupation manner which is supported by the system; distributing the sequence groups to cells. The method avoids the phenomenon that signaling transmission is needed to distribute the sequences to the cells for different time frequency resource occupation manner, and saves in so far as possible the wireless network transmission resource occupied during the process of distributing the sequences through distributing the sequence groups comprising a number of sequences to the cells.