US2021328867A1PendingUtilityA1

Methods and apparatuses for reference signal configuration

68
Assignee: NEC CORPPriority: Jun 13, 2017Filed: Jul 1, 2021Published: Oct 21, 2021
Est. expiryJun 13, 2037(~10.9 yrs left)· nominal 20-yr term from priority
Inventors:Yukai GaoGang Wang
H04W 72/23H04L 5/0048H04L 41/0806H04L 5/005H04L 5/0051H04W 76/27H04W 24/10H04L 5/0053H04W 48/12H04W 72/042H04W 72/1273H04W 72/232
68
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Claims

Abstract

Embodiments of the present disclosure relate to methods and devices for reference signal (RS) transmission. In example embodiments, a method implemented in a network device is provided. According to the method, the size of a field for indicating a RS configuration to a terminal device served by the network device is determined based on at least one condition related to RS transmission. A first indication of the RS configuration is transmitted to the terminal device. The first indication is included in the field with the determined size.

Claims

exact text as granted — not AI-modified
1 . A terminal comprising a processor configured to:
 select a table from tables of configurations of DeModulation Reference Signal (DMRS) port number(s) based on a 1st parameter and a 2nd parameter; and   receive, from a network device, an index value of the table in Downlink Control Information (DCI),   wherein the number of bits for index values of each of the tables is determined based on a combination of the 1st parameter and the 2nd parameter,   wherein the maximum number of DMRS ports being supported depends on the 1st parameter, and   wherein the 2nd parameter is a parameter of the number of symbol(s) for DMRS.   
     
     
         2 . The terminal according to  claim 1 , wherein the 1st parameter is one of DMRS Configuration 1 and DMRS Configuration 2,
 wherein up to 4 transmission layers are supported for the DMRS Configuration 1 if the 2nd parameter indicates 1 symbol,   wherein up to 8 transmission layers are supported for the DMRS Configuration 1 if the 2nd parameter indicates 2 symbols,   wherein up to 6 transmission layers are supported for the DMRS Configuration 2 if the 2nd parameter indicates 1 symbol, and   wherein up to 12 transmission layers are supported for the DMRS Configuration 2 if the 2nd parameter indicates 2 symbols.   
     
     
         3 . The terminal according to  claim 1 , wherein the processor is configured to:
 receive, from the network device, the 1st parameter and the 2nd parameter via Radio Resource Control (RRC) layer signaling.   
     
     
         4 . The terminal according to  claim 1 , wherein the processor is configured to:
 receive, from the network device, a DMRS based on a configuration of DMRS port number(s) indexed by the index value.   
     
     
         5 . The terminal according to  claim 1 , wherein the processor is configured to:
 transmit, to the network device, a DMRS based on a configuration of DMRS port number(s) indexed by the index value.   
     
     
         6 . A network device comprising a processor configured to:
 select a table from tables of configurations of DeModulation Reference Signal (DMRS) port number(s) based on a 1st parameter and a 2nd parameter; and   transmit, to a terminal, an index value of the table in Downlink Control Information (DCI),   wherein the number of bits for index values of each of the tables is determined based on a combination of the 1st parameter and the 2nd parameter,   wherein the maximum number of DMRS ports being supported depends on the 1st parameter, and   wherein the 2nd parameter is a parameter of the number of symbol(s) for DMRS.   
     
     
         7 . The network device according to  claim 6 , wherein the 1st parameter is one of DMRS Configuration 1 and DMRS Configuration 2,
 wherein up to 4 transmission layers are supported for the DMRS Configuration 1 if the 2nd parameter indicates 1 symbol,   wherein up to 8 transmission layers are supported for the DMRS Configuration 1 if the 2nd parameter indicates 2 symbols,   wherein up to 6 transmission layers are supported for the DMRS Configuration 2 if the 2nd parameter indicates 1 symbol, and   wherein up to 12 transmission layers are supported for the DMRS Configuration 2 if the 2nd parameter indicates 2 symbols.   
     
     
         8 . The network device according to  claim 6 , wherein the processor is configured to:
 transmit, to a terminal, the 1st parameter and the 2nd parameter via Radio Resource Control (RRC) layer signaling.   
     
     
         9 . The network device according to  claim 6 , wherein the processor is configured to:
 transmit, to a terminal, a DMRS based on a configuration of DMRS port number(s) indexed by the index value.   
     
     
         10 . The network device according to  claim 6 , wherein the processor is configured to:
 receive, from a terminal, a DMRS based on a configuration of DMRS port number(s) indexed by the index value.   
     
     
         11 . A method comprising:
 selecting a table from tables of configurations of DeModulation Reference Signal (DMRS) port number(s) based on a 1st parameter and a 2nd parameter; and   receiving an index value of the table in Downlink Control Information (DCI),   wherein the number of bits for index values of each of the tables is determined based on a combination of the 1st parameter and the 2nd parameter,   wherein the maximum number of DMRS ports being supported depends on the 1st parameter, and   wherein the 2nd parameter is a parameter of the number of symbol(s) for DMRS.   
     
     
         12 . The method according to  claim 11 , wherein the 1st parameter is one of DMRS Configuration 1 and DMRS Configuration 2,
 wherein up to 4 transmission layers are supported for the DMRS Configuration 1 if the 2nd parameter indicates 1 symbol,   wherein up to 8 transmission layers are supported for the DMRS Configuration 1 if the 2nd parameter indicates 2 symbols,   wherein up to 6 transmission layers are supported for the DMRS Configuration 2 if the 2nd parameter indicates 1 symbol, and   wherein up to 12 transmission layers are supported for the DMRS Configuration 2 if the 2nd parameter indicates 2 symbols.   
     
     
         13 . The method according to  claim 11 , comprising:
 receiving the 1st parameter and the 2nd parameter via Radio Resource Control (RRC) layer signaling.   
     
     
         14 . The method according to  claim 11 , comprising:
 receiving a DMRS based on a configuration of DMRS port number(s) indexed by the index value.   
     
     
         15 . The method according to  claim 11 , comprising:
 transmitting a DMRS based on a configuration of DMRS port number(s) indexed by the index value.   
     
     
         16 . A method comprising:
 selecting a table from tables of configurations of DeModulation Reference Signal (DMRS) port number(s) based on a 1st parameter and a 2nd parameter; and   transmitting an index value of the table in Downlink Control Information (DCI),   wherein the number of bits for index values of each of the tables is determined based on a combination of the 1st parameter and the 2nd parameter,   wherein the maximum number of DMRS ports being supported depends on the 1st parameter, and   wherein the 2nd parameter is a parameter of the number of symbol(s) for DMRS.   
     
     
         17 . The method according to  claim 16 , wherein the 1st parameter is one of DMRS Configuration 1 and DMRS Configuration 2,
 wherein up to 4 transmission layers are supported for the DMRS Configuration 1 if the 2nd parameter indicates 1 symbol,   wherein up to 8 transmission layers are supported for the DMRS Configuration 1 if the 2nd parameter indicates 2 symbols,   wherein up to 6 transmission layers are supported for the DMRS Configuration 2 if the 2nd parameter indicates 1 symbol, and   wherein up to 12 transmission layers are supported for the DMRS Configuration 2 if the 2nd parameter indicates 2 symbols.   
     
     
         18 . The method according to  claim 16 , comprising:
 transmitting the 1st parameter and the 2nd parameter via Radio Resource Control (RRC) layer signaling.   
     
     
         19 . The method according to  claim 16 , comprising:
 transmitting a DMRS based on a configuration of DMRS port number(s) indexed by the index value.   
     
     
         20 . The method according to  claim 16 , comprising:
 receiving a DMRS based on a configuration of DMRS port number(s) indexed by the index value.

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