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US 9,313,677 B2Granted
Method and system for sending a channel measurement reference signal
AssigneeZte Corporation
InventorsJing Jiang, Changqing Zhu, Chenchen Zhang
Life of this patent
Estimating the term…
Abstract
A method and system for sending a channel measurement reference signal are provided, said method comprising: sending each port of the channel measurement reference signal in one subframe or two adjacent subframes during one sending period, and repeatedly sending each port of the channel measurement reference signal in full bandwidth with equal space in the unit of a predetermined composition unit.
Claims19
A method for sending a channel measurement reference signal, comprising the following steps:
- during one sending period, sending the channel measurement reference signal of each port by a base station in one subframe or two adjacent subframes and sending the channel measurement reference signal of each port repeatedly in full bandwidth with equal space by taking at least one resource block (RB) as the predetermined a predetermined composition unit;
- wherein newly designing channel measurement reference signals with {4, 8} ports,
- when the number of actual antenna ports is equal to 4 or 8, mapping the channel measurement reference signals with 4 or 8 ports on corresponding subcarriers such that the newly designed channel measurement reference signal with 4 or 8 ports achieves a downstream channel measurement of the long-term evolution advance system;
- and
- when the number of actual antenna ports is equal to 1 or 2, the common reference signal of the LTE a LTE system is reused by the channel measurement reference signal as a channel measurement reference signal, so as to achieve the downstream channel measurement of the long-term evolution advance system;
- wherein the pattern of the channel measurement reference signal with 4 ports and that of the first 4 ports of the channel measurement reference signal with 8 ports are the same.
3 more elements
A system for sending a channel measurement reference signal, comprising:
- a sending module, configured to send the channel measurement reference signal of each port in one subframe or two adjacent subframes during one sending period and send the channel measurement reference signal of each port repeatedly in full bandwidth with equal space by taking at least one resource block (RB) as a predetermined composition unit;
- wherein the sending module comprises:
- a first channel measurement reference signal port number setting unit, configured to newly design channel measurement reference signals with {4, 8} ports, when the number of actual antenna ports is equal to 4 or 8, the channel measurement reference signals with 4 or 8 ports are mapped on corresponding subcarriers such that the newly designed channel measurement reference signal with 4 or 8 ports achieves the downstream channel measurement of the long-term evolution advance system, and when the number of actual antenna ports is equal to 1 or 2, the common reference signal of the LTE a LTE system is reused by the channel measurement reference signal as a channel measurement reference signal, so as to achieve the downstream channel measurement of the long-term evolution advance system, wherein the pattern of the channel measurement reference signal with 4 ports and that of the first 4 ports of channel measurement reference signal with 8 ports are the same.
Dependencies are inferred from the claim text.