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US 2019/0173539 A1Published application
Signal transmission method and apparatus
AssigneeHuawei Technologies Co., Ltd.
InventorsKunpeng Liu, Leiming Zhang, Jianghua Liu
Life of this patent
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Abstract
Embodiments of the present invention disclose a signal transmission method, a system, and a device. When measuring a reference signal and determining channel quality, UE obtains a difference between codeword to CSI-RS mapping relationships by using a channel quality measurement model, may calculate an optimized mapping relationship by means of measurement, and determines at least one mapping relationship from these mapping relationships, to adjust a codeword to CSI-RS mapping relationship of a channel, thereby improving system flexibility and increasing channel resource utilization.
Claims12
A signal transmission method, comprising:
- receiving a first reference signal sent by a network device;
- measuring the first reference signal to obtain a measurement result;
- determining mapping relationship from a mapping relationship set according to the measurement result, wherein the mapping relationship set comprises mapping relationships between rank value and different channel state information-reference signal (CSI-RS) ports;
- sending a notification message to the network device, wherein the notification message is used to indicate the determined at least one mapping relationship;
- and
- sending a channel quality indicator (CQI) to the network device, wherein at least one of a quantity of the CQIs or a value of the CQI is obtained according to the determined at least one mapping relationship.
3 more elements
A signal transmission method, comprising:
- sending, by a network device, a first reference signal to user equipment (UE);
- receiving, by the network device, a notification message that is sent by the UE and that is generated according to the first reference signal, wherein the notification message indicates at least one mapping relationship in a mapping relationship set;
- obtaining, by the network device, the at least one mapping relationship from the mapping relationship set according to the mapping relationship message, wherein:
- the at least one mapping relationship is determined by the UE from the mapping relationship set according to the first reference signal, wherein the mapping relationship set comprises mapping relationships between rank value and different channel state information-reference signal (CSI-RS) ports;
- and
- receiving a channel quality indicator (CQI) sent by the UE, wherein at least one of a quantity of the CQIs or a value of the CQI is obtained according to the determined at least one mapping relationship.
3 more elements
A user equipment (UE), comprising:
- a receiver, configured to receive a first reference signal sent by a network device;
- a processor, configured to measure the first reference signal to obtain a measurement result;
- the processor further configured to determine at least one mapping relationship from a mapping relationship set according to the measurement result, wherein the mapping relationship set comprises mapping relationships between rank value and different channel state information-reference signal (CSI-RS) ports;
- and
- a transmitter, configured to send a notification message to the network device, wherein the notification message indicates the at least one mapping relationship determined by the processor;
- and send a channel quality indicator (CQI) to the network device, wherein at least one of a quantity of the CQIs or a value of the CQI is obtained according to the determined at least one mapping relationship.
3 more elements
A network device, comprising:
- a transmitter, configured to send a first reference signal to user equipment (UE);
- a receiver, configured to receive a mapping relationship message that is sent by the UE and that is generated according to the first reference signal, wherein the notification message is used to indicate at least one mapping relationship in a mapping relationship set;
- and
- a processor, configured to obtain the at least one mapping relationship from the mapping relationship set according to the mapping relationship message, wherein:
- the at least one mapping relationship is determined by the UE from the mapping relationship set according to the first reference signal, wherein the mapping relationship set comprises mapping relationships between rank value and different channel state information-reference signal (CSI-RS) ports;
- and
- the receiver is further configured to receive a channel quality indicator (CQI) sent by the UE, wherein at least one of a quantity of the CQIs or a value of the CQI is obtained according to the determined at least one mapping relationship.
4 more elements
Dependencies are inferred from the claim text.