Methods and devices for reduction of cubic metric in a concatenated block reference signal design
AssigneeTelefonaktiebolaget LM Ericsson (publ)
InventorsLars LINDBOM, Robert BALDEMAIR, Martin HESSLER, Stefan PARKVALL
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Abstract
Method and devices determine parameters governing a concatenated reference signal design based on Zadoff-Chu sequences and having a limited correlation with other reference signals arriving at a same transmission point, wherein the concatenated reference signal has a controlled cubic metric. The cubic metric control is achieved by selecting base sequence root indices, phase shifts and/or block configurations in view of information related to the other reference signals.
Claims38
A method performed by a network device in a wireless network, the method comprising:
- determining parameters for generating first segments of a first reference signal, RS, each of the first segments covering a distinct set of frequencies, the parameters including at least a base sequence root index for one of the first segments, and being determined using information about at least a second RS which is to be received substantially simultaneously with the first RS at a transmission point of the wireless network, so as to limit correlation between the first RS and the second RS;
- and
- providing the parameters to generate the first RS including the first segments.
A network device, comprising:
- a communication interface configured to transmit and receive data via a wireless network;
- and
- a processing unit connected to the communication interface and including at least one processor, the processing unit being configured
- to determine parameters for generating first segments of a first reference signal, RS, each of the first segments covering a distinct set of frequencies, the parameters including at least a base sequence root index for one of the first segments, and being determined using information about at least a second RS which is to be received substantially simultaneously with the first RS at a transmission point of the wireless network, so as to limit correlation between the first RS and the second RS, and
- to provide the parameters for generating the first RS including the first segments.
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A method for a wireless device in a communication network, the method comprising:
- receiving parameters for generating a first reference signal, RS, from a network device;
- and
- generating and transmitting the first RS by concatenating first segments generated according to the parameters that include at least a base sequence root index determined for an RS segment among the first segments,
- wherein each of the first segments covering a distinct set of frequencies, and
- the parameters have been determined using information about at least a second RS, which is to be received substantially simultaneously with the first RS at a transmission point of the wireless network, so as to limit correlation between the first RS and the second RS.
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A wireless device in a communication network, the wireless device comprising:
- a communication interface configured to transmit a first reference signal, RS, and to receive parameters related to generating the first RS from a network device;
- and
- a processing unit connected to the communication interface and configured to generate the first RS by concatenating first segments according to the parameters that include at least a base sequence root index determined for an RS segment among the first segments,
- wherein each of the first segments is characterized by a base sequence root index and covers a distinct set of frequencies, and
- the parameters have been determined using information about a second RS, which is to be received substantially simultaneously with the first RS at a transmission point of the wireless network, so as to limit correlation between the first RS and the second RS.
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Dependencies are inferred from the claim text.