# US 11,310,014 B2 · Method and device for information indication and resource determination and computer storage medium > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,310,014 B2 - Document ID: US11310014B2 - Status: Granted - Kind: B2 - Application number: 16/764,851 - Filed: 2018-10-19 - Published: 2020-10-29 - Granted: 2022-04-19 - Earliest claimed: 2017-11-17 - Assignees: Datang Mobile Communications Equipment Co., Ltd. - Applicants: China Academy of Telecommunications Technology - Inventors: Baojuan Guo; Tamrakar Rakesh - Web page: https://patentgrep.com/patent/US11310014B2 ## CPC - H04L 5/0048: {Allocation of pilot signals, i.e. of signals known to the receiver (allocation of control signalling H04L5/0053; use of control signalling H04L5/0091)} - H04L 5/0051: {of dedicated pilots, i.e. pilots destined for a single user or terminal} - H04L 5/0007: {the frequencies being orthogonal, e.g. OFDM(A) or DMT} - H04L 5/0023: {Time-frequency-space} - H04L 5/0058: {Allocation criteria} - H04L 5/0091: {Signalling for the administration of the divided path, e.g. signalling of configuration information} - H04L 5/0094: {Indication of how sub-channels of the path are allocated} - H04L 27/26: Systems using multi-frequency codes (H04L27/32 takes precedence) - H04L 27/261: {Details of reference signals} - H04W 72/04: Wireless resource allocation - H04B 7/0452: Multi-user MIMO systems - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - H04B: TRANSMISSION ## Abstract Disclosed are a method and a device for information indication and resource determination, and a computer storage medium, which are used to indicate and determine the resource occupation state of a DMRS port, and to save a signaling overhead. The information indication method provided in an embodiment of the present application comprises: determining indication information on a demodulation reference signal (DMRS) port resource that a terminal needs to occupy, according to a preset configuration list, wherein the configuration list comprises DMRS group information and DMRS port information; and notifying the terminal of the indication information. ## Claims ### Claim 1 A method for information indication, comprising: determining indication information of one or more demodulation reference signal (DMRS) ports resources to be occupied by a terminal according to a preset configuration table, wherein the configuration table comprises DMRS group information and DMRS port information; and transmitting the indication information to the terminal; wherein a DMRS ports designation principle of the configuration table comprises: when designating one or more DMRS ports resources to the terminal, setting indexes of respective DMRS ports and respective DMRS groups, respectively, to numbers starting from 0 in an order from least to greatest, and when an index of a DMRS group including one of the one or more DMRS ports to be occupied by the terminal is greater than 0, then defaulting that any DMRS group having an index smaller than the index of the DMRS group including the DMRS port designated to the terminal is to be occupied by the terminal; wherein when a DMRS comprises one orthogonal frequency division multiplexing (OFDM) symbol, the maximum number of supported ports is N1, when a DMRS comprises two OFDM symbols, the maximum number of supported ports is N2, and the indexes of the respective DMRS ports and the respective DMRS groups are set to the numbers starting from 0 in the order from the least to the greatest, respectively, then the configuration table comprises one or a combination of following cases: case 1: when one index of indexes of DMRS ports designated to the terminal is greater than N1−1, then the total number of DMRS ports configured for multi-user multiple-input multiple output (MU-MIMO) transmission is greater than N1, and a DMRS comprises two OFDM symbols; case 2: when the number of the DMRS ports designated to the terminal is greater than two and no index of the designated DMRS ports is greater than N1−1, then the total number of DMRS ports configured for the MU-MIMO transmission is smaller than or equal to N1 and the DMRS comprises one OFDM symbol. ### Claim 2 (depends on 1) The method according to claim 1, wherein the DMRS group information comprises DMRS group indexes and the number of DMRS symbols; and/or the DMRS port information comprises DMRS port indexes. ### Claim 3 (depends on 1) The method according to claim 1, wherein the configuration table further comprises configuration indexes, and/or quantities of DMRS configuration layers. ### Claim 4 (depends on 3) The method according to claim 3, wherein the indication information comprises the configuration indexes. ### Claim 5 (depends on 1) The method according to claim 1, wherein according to the DMRS ports designation principle, DMRS ports belonging to a same DMRS group are designated first, wherein DMRS group indexes of the DMRS group comprise at least a DMRS group index 0 and a DMRS group index 1. ### Claim 6 (depends on 1) The method according to claim 1, wherein the configuration table comprises five columns, wherein a first column indicates DMRS configuration indexes, a second column indicates quantities of DMRS configuration layers of the terminal under configurations corresponding to the DMRS configuration indexes, a third column indicates DMRS port indexes corresponding to the quantities of DMRS configuration layers of the terminal, a fourth column indicates DMRS group indexes of DMRS groups including DMRS ports of all terminals in a MU-MIMO system, and a fifth column indicates the number of allocated DMRS symbols; or the configuration table comprises four columns, wherein a first column indicates DMRS configuration indexes, a second column indicates quantities of DMRS configuration layers of the terminal under configurations corresponding to the DMRS configuration indexes, a third column indicates DMRS port indexes corresponding to the quantities of DMRS configuration layers of the terminal, a fourth column indicates DMRS group indexes of DMRS groups including DMRS ports of all terminals in a MU-MIMO system, and different DMRS group indexes correspond to different numbers of DMRS symbols. ### Claim 7 (depends on 1) The method according to claim 1, further comprising: transmitting indication information of a DMRS pilot pattern corresponding to the preset configuration table to the terminal. ### Claim 8 A method for resource determination, comprising: receiving indication information of one or more demodulation reference signal (DMRS) ports resources to be occupied by a terminal from a network side device; and determining the one or more DMRS ports resources to be occupied by the terminal according to a preset configuration table and the indication information, wherein the configuration table comprises DMRS group information and DMRS port information; wherein a DMRS ports designation principle of the configuration table comprises: when designating one or more DMRS ports resources to the terminal, setting indexes of respective DMRS ports and respective DMRS groups, respectively, to numbers starting from 0 in an order from least to greatest, and when an index of a DMRS group including one of the one or more DMRS ports to be occupied by the terminal is greater than 0, then defaulting that any DMRS group having an index smaller than the index of the DMRS group including the DMRS port designated to the terminal is to be occupied by the terminal; wherein when a DMRS comprises one orthogonal frequency division multiplexing (OFDM) symbol, the maximum number of supported ports is N1, when a DMRS comprises two OFDM symbols, the maximum number of supported ports is N2, and the indexes of the respective DMRS ports and the respective DMRS groups are set to the numbers starting from 0 in the order from the least to the greatest, respectively, then the configuration table comprises one or a combination of following cases: case 1: when one index of indexes of DMRS ports designated to the terminal is greater than N1−1, then the total number of DMRS ports configured for multi-user multiple-input multiple output (MU-MIMO) transmission is greater than N1, and a DMRS comprises two OFDM symbols; case 2: when the number of the DMRS ports designated to the terminal is greater than two and no index of the designated DMRS ports is greater than N1−1, then the total number of DMRS ports configured for the MU-MIMO transmission is smaller than or equal to N1 and the DMRS comprises one OFDM symbol. ### Claim 9 (depends on 8) The method according to claim 8, further comprising: receiving indication information of a DMRS pilot pattern; and determining the preset configuration table corresponding to the indication information of the DMRS pilot pattern. ### Claim 10 A device for information indication, comprising: a memory configured to store program instructions; and a processor configured to read the program instructions to perform operations of: determining indication information of one or more demodulation reference signal (DMRS) ports resources to be occupied by a terminal according to a preset configuration table, wherein the configuration table comprises DMRS group information and DMRS port information; and transmitting the indication information to the terminal; wherein a DMRS ports designation principle of the configuration table comprises: when designating one or more DMRS ports resources to the terminal, setting indexes of respective DMRS ports and respective DMRS groups, respectively, to numbers starting from 0 in an order from least to greatest, and when an index of a DMRS group including one of the one or more DMRS ports to be occupied by the terminal is greater than 0, then defaulting that any DMRS group having an index smaller than the index of the DMRS group including the DMRS port designated to the terminal is to be occupied by the terminal; wherein when a DMRS comprises one orthogonal frequency division multiplexing (OFDM) symbol, the maximum number of supported ports is N1, when a DMRS comprises two OFDM symbols, the maximum number of supported ports is N2, and the indexes of the respective DMRS ports and the respective DMRS groups are set to the numbers starting from 0 in the order from the least to the greatest, respectively, then the configuration table comprises one or a combination of following cases: case 1: when one index of indexes of DMRS ports designated to the terminal is greater than N1−1, then the total number of DMRS ports configured for multi-user multiple-input multiple output (MU-MIMO) transmission is greater than N1, and a DMRS comprises two OFDM symbols; case 2: when the number of the DMRS ports designated to the terminal is greater than two and no index of the designated DMRS ports is greater than N1−1, then the total number of DMRS ports configured for the MU-MIMO transmission is smaller than or equal to N1 and the DMRS comprises one OFDM symbol. ### Claim 11 (depends on 10) The device according to claim 10, wherein the DMRS group information comprises DMRS group indexes and the number of DMRS symbols; and/or the DMRS port information comprises DMRS port indexes. ### Claim 12 (depends on 10) The device according to claim 10, wherein the configuration table further comprises configuration indexes, and/or quantities of DMRS configuration layers. ### Claim 13 (depends on 12) The device according to claim 12, wherein the indication information comprises the configuration indexes. ### Claim 14 (depends on 10) The device according to claim 10, wherein according to the DMRS ports designation principle, DMRS ports belonging to a same DMRS group are designated first, wherein DMRS group indexes of the DMRS group comprise at least a DMRS group index 0 and a DMRS group index 1. ### Claim 15 (depends on 10) The device according to claim 10, wherein the configuration table comprises five columns, wherein a first column indicates DMRS configuration indexes, a second column indicates quantities of DMRS configuration layers of the terminal under configurations corresponding to the DMRS configuration indexes, a third column indicates DMRS port indexes corresponding to the quantities of DMRS configuration layers of the terminal, a fourth column indicates DMRS group indexes of DMRS groups including DMRS ports of all terminals in a MU-MIMO system, and a fifth column indicates the number of allocated DMRS symbols; or the configuration table comprises four columns, wherein a first column indicates DMRS configuration indexes, a second column indicates quantities of DMRS configuration layers of the terminal under configurations corresponding to the DMRS configuration indexes, a third column indicates DMRS port indexes corresponding to the quantities of DMRS configuration layers of the terminal, a fourth column indicates DMRS group indexes of DMRS groups including DMRS ports of all terminals in a MU-MIMO system, and different DMRS group indexes correspond to different numbers of DMRS symbols. ### Claim 16 (depends on 10) The device according to claim 10, wherein the processor is further configured to read the program instructions to perform an operation of: transmitting indication information of a DMRS pilot pattern corresponding to the preset configuration table to the terminal. ### Claim 17 (depends on 8) A device for resource determination, comprising: a memory configured to store program instructions; and a processor configured to read the program instructions to perform the method of claim 8. ### Claim 18 (depends on 17) The device according to claim 17, wherein the processor is further configured to read the program instructions to perform an operation of: receiving indication information of a DMRS pilot pattern; and determining the preset configuration table corresponding to the indication information of the DMRS pilot pattern.