# US 2014/0192796 A1 · Method and Device for Rate Matching > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0192796 A1 - Document ID: US20140192796A1 - Status: Published application - Kind: A1 - Application number: 14/117,126 - Filed: 2011-06-13 - Published: 2014-07-10 - Earliest claimed: 2011-06-13 - Assignees: Telefonaktiebolaget L M Ericsson (publ) - Inventors: Jinping Zhang - Web page: https://patentgrep.com/patent/US20140192796A1 ## CPC - H04W 56/001: {Synchronization between nodes} - H04W 28/0205: {at the air interface (dynamic wireless traffic scheduling H04W72/12)} - H04W 88/085: {Access point devices with remote components} - H04W 92/12: between access points and access point controllers - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract Embodiments of this invention provide a rate matching device used for exchanging data between REC and at least one RE. The rate matching device comprises at least one first interface arranged to exchange user data between the REC and the rate matching device, at least one second interface arranged to exchange user data between the rate matching device and the at least one RE, and a map function block arranged to map the user data between at least one first interface and at least one second interface. Embodiments of this invention also provide a method for exchanging data between REC and at least one RE through the rate matching device. ## Claims ### Claim at position 1 1-14. (canceled) ### Claim 15 A rate matching device used for exchanging data between one radio equipment control node (REC) and at least one radio equipment node (RE), the rate matching device comprising: at least one first interface configured to exchange user data between the REC and the rate matching device; at least one second interface configured to exchange user data between the rate matching device and the at least one RE; a map function block circuit configured to map the user data between the at least one first interface and the at least one second interface. ### Claim 16 (depends on 15) The rate matching device of claim 15, wherein the map function block circuit is configured to perform at least one of the following: distribute the user data from one first interface into two or more of the second interfaces; merge the user data from two or more of the first interfaces into one of the second interface. ### Claim 17 (depends on 15) The rate matching device of claim 15, wherein the rate matching device is configured to determine a number of the first interfaces and a number of the second interfaces based on a relationship of line bit rates between the REC and the at least one RE. ### Claim 18 (depends on 17) The rate matching device of claim 17, wherein the rate matching device is configured to determine the number of the first interfaces and the number of the second interfaces based on the following relationship: both a sum of line bit rates of all the first interfaces and a sum of line bit rates of all the second interfaces are not greater than a largest line bit rate between the REC and the at least one RE. ### Claim 19 (depends on 15) The rate matching device of claim 15, wherein the device further comprises a clock circuit configured to generate, based on a clock signal coming from any one of the first interfaces, both: a system clock signal for the rate matching device; and a reference clock signal for the at least one RE. ### Claim 20 (depends on 15) The rate matching device of claim 15, wherein the rate matching device further comprises a delay calculation circuit configured to calculate a delay for use in link delay compensation between the REC and the at least one RE. ### Claim 21 (depends on 15) The rate matching device of claim 15: wherein the first interfaces and the second interfaces are further configured to transfer control information; wherein the control information includes one or more control words indicating the way of transferring the control information. ### Claim 22 A method for exchanging data between one radio equipment control node (REC) and at least one radio equipment node (RE) through a rate matching device (RMB), the method comprising: receiving user data from the REC via at least one first interface of the RMB; mapping the user data from the first interface into at least one second interface of the RMB; transmitting the user data to the at least one RE via the at least one second interface. ### Claim 23 (depends on 22) The method of claim 22, wherein mapping the user data from the at least one first interface into the at least one second interface comprises one of: distributing the user data from one of the at least one first interface into two or more second interfaces; merging the user data from two or more of the first interfaces into one second interface. ### Claim 24 (depends on 22) The method of claim 22, wherein a number of the first interfaces and a number of the second interfaces are determined based on a relationship of line bit rates between the REC and the at least one RE. ### Claim 25 (depends on 24) The method of claim 24, wherein the number of the first interfaces and the number of the second interfaces are determined based on the following relationship: both a sum of line bit rates of all the first interfaces and a sum of line bit rates of all the second interfaces are not greater than a largest line bit rate between the REC and the at least one RE. ### Claim 26 (depends on 22) The method of claim 22, further comprising: transferring control information from the REC to the at least one RE through the RMB; wherein the control information includes one or more control words indicating a way of transferring the control information. ### Claim 27 (depends on 26) The method of claim 26, wherein the transferring the control information between the REC and the RMB comprises one of the following: transmitting the control information via at least two first interfaces, with each of the at least two first interfaces carrying the same control information; transmitting the control information via one first interface; and distributing the control information into two or more of the first interfaces. ### Claim 28 (depends on 26) The method of claim 26, wherein the transferring the control information between the RMB and the at least one RE comprises one of the following: transmitting the control information via two or more of the second interfaces, with each of the at least two second interfaces carrying the same control information; transmitting the control information via one of the second interfaces; and distributing the control information into two or more of the second interfaces.