31 results about "Radio equipment control" patented technology

An interface, apparatus, and method are described for communication between a radio equipment control (REC) node and first and second radio equipment (RE) nodes in a radio base station that transceives information over radio interface using multiple antenna carriers. The REC node is separate from and coupled to the first RE node by a first transmission link, and the second RE node coupled to the first RE by a second transmission link. Both control information and user information intended for communication between the REC node and the first RE node and the REC and the second RE node are conveyed over the first transmission link. The first RE node also conveys information between the REC and second RE node. Many advantageous features are described.

A radio base station BTS according to the present invention includes a timing adjustment unit 15 configured to adjust transmission timing of the frame to be transmitted by a second synchronous signal transmission unit, 12 based on processing delay time in the relay device 10 and round-trip time RTT of the radio equipment device RE at the relay device 10, and the radio equipment controller REC#1, #2 are configured to calculate round-trip time RTT of the radio equipment device RE at the radio equipment controller REC#1, #2, based on a difference T14 between transmission time of the first synchronous signal R1 and reception time of the fourth synchronous signal R4.

A radio equipment control for communicating plural radio equipment units including an identifier inserting unit for inserting into a frame an identifier for recognizing a connection relation of plural cascade-connected radio equipment units and a transmitting unit for transmitting the frame having the identifier inserted therein by the identifier inserting unit to the plural cascade-connected radio equipment units. The wireless communication apparatus includes a receiving unit for receiving the frame having the identifier inserted therein from the plural cascade-connected radio equipment units and a connection relation recognizing unit for recognizing the connection relation of the plural cascade-connected radio equipment units on the basis of the identifier of the frame received by the receiving unit.

A method for transmitting Common Public Radio Interface (CPRI) data in a radio base station is provided, which is applicable to the radio base station having at least two CPRI links between a Radio Equipment Control (REC) and a Radio Equipment (RE). The method includes: dividing by the REC, in-phase/quadrature phase (I/Q) data that needs to be transmitted to the RE into multiple paths of I/Q data with different content, where the multiple paths of I/Q data with different content make up the I/Q data before being divided; transmitting, by the REC, all paths of divided I/Q data to the RE over the at least two CPRI links.

The embodiment of the invention discloses a method and system for air interface time synchronization, radio equipment (RE) and a radio equipment control (REC), thereby realizing air interface synchronization at an RE side. According to the embodiment of the invention, the method comprises the following steps that: the RE receives a data frame sent by the REC, wherein the data frame carries time information; and according to the time information, data carried by the data frame are sent. Therefore, air interface time synchronization of the RE side can be effectively realized.

The invention provides a wireless connection establishment method enabling determination of a transmission format while giving consideration to security when conducting a connection establishment needed to send and receive multimedia information between radio devices having a radio communication function. In the invention, a radio device control terminal requests an authentication server to conduct authentication with respect to radio devices requesting a connection and then an authentication process is performed by the authentication server. When the radio devices are authenticated properly, the radio device control terminal acquires each transmission format of the radio devices from an information management server to determine a radio transmission format common to these radio devices. The radio transmission format thus determined is sent to the radio devices, so that the radio devices establish a wireless connection with each other by use of the radio transmission format.

The invention provides a radio interface data synchronous processing method and a radio interface data synchronous processing device. The radio interface data synchronous processing method and the radio interface data synchronous processing device can ensure that data frames with the same frame number can be synchronously transmitted at radio interfaces of all radio equipment and ensure that influences caused by transmission delay and vibration are eliminated. The radio interface data synchronous processing method includes the steps: (1) the radio equipment RE0 receives a data frame Df transmitted from a radio equipment control center to the radio equipment RE0 through a loading transmission network, and the radio equipment RE0 stores the data frame Df into an internal cache unit of the radio equipment RE0; (2) the radio equipment RE0 reads the data frame Df from the internal cache unit, and then the data frame Df is subjected to processing of a radio frequency processing unit and is sent from a radio interface at the radio interface sending moment Tsend. The radio interface data synchronous processing method can be utilized to enable the data frames with the same frame number to be synchronously transmitted from the radio interfaces of all the radio equipment, and is capable of meeting the requirements of the wireless communication protocol for strict synchronization at the radio interface data sending time.

The invention discloses a method of exchanging data between a radio equipment control node and a radio equipment node. The data comprises user data and control data. The control data comprises operational maintenance data. The radio equipment control node transmits downlink operational maintenance data to the radio equipment node in the uplink time slot of a TD-SCDMA sub frame. The radio equipment node transmits uplink operational maintenance data to the radio equipment control node in the downlink time slot of the TD-SCDMA sub frame. The radio equipment control node, the radio equipment node and a radio base station system are also disclosed by the invention. With the method adopted, the rate of data streams between the radio equipment control node and the radio equipment node is improved.

The present invention discloses radio installation nodes, distributed radio communication base stations comprising the radio installation nodes and a communication method thereof, wherein, the radio installation nodes realize data transmitting to the radio installation control nodes in the adjacent radio base station by using different optical wavelengths. The radio installation nodes are positioned in the area covered by the distributed radio communication base station, the radio installation nodes in the edge of the covered area communicate with the radio installation control nodes of two or more adjacent distributed radio communication base stations, and the radio installation nodes are controlled and managed by the radio installation control nodes of the two or more adjacent distributed radio communication base stations. According to the present invention, communication between the radio installation nodes in a radio communication base station and the radio installation control nodes of the adjacent radio communication base stations is realized.

The invention discloses a calibration control method for a communication channel in a radio base station. The method comprises: a radio equipment (RE) receiving a radio equipment control (REC) system time, according to the received REC system time increasing accumulative time, acquiring an RE system time and performing initialization calibration to the communication channel, and reporting the result to the REC, the result comprising the RE system time; the REC acquiring the difference between the RE system time and the REC system time according to the RE system time; taking one half of the difference as a bias of the RE system time and the REC system time, and performing time synchronization treatment to the REC and RE. The invention also discloses the RE, the REC and a radio base station system in the radio base station. Due to the adoption of the invention, the accurate timing to the application layer of the equipment can be realized, and the influence to the communication channel due to unstable consistency of the amplitude phase of the communication channel under the operational mode of the antenna array of the RE also can be avoided.

A radio communications apparatus having multiple radio equipment units is disclosed. The radio communications apparatus includes a radio equipment selecting unit which selects one of the radio equipment units based on a received quality in each of the radio equipment units when transferring to a power saving state; and a radio equipment control unit which operates the radio equipment unit selected by the radio equipment selecting unit and stops a radio equipment unit other than the selected radio equipment unit.

Examples disclosed herein provide systems, methods, and software for communication using Common Public Radio Interface. In one example, a system for CPRI communication includes a radio equipment control system configured to generate a timing security flag for a basic frame, insert the security flag into the basic frame, and initiate transfer of the basic frame to a radio equipment system. The radio equipment system is further configured to receive the basic frame, identify validity of the timing security flag, and upon validation, update timing on the radio equipment.

Wireless data that is obtained via a radio (91) and stored in a radio-control-unit buffer (5A) is transferred to an intermediate wireless-data buffer (5M) by a wireless-data reception unit (321). Also, intra-vehicle data stored in an intra-vehicle-communication-control-unit buffer (5B) is transferred to an intermediate intra-vehicle-data buffer (5N) by an intra-vehicle-data reception unit (331). When data is being thus transferred, a wireless-data reception task is prioritized over other processes that transfer data, such as an intra-vehicle-data reception task. Since wireless data received by a radio control unit (22) is sequentially transferred to the intermediate wireless-data buffer (5M) as soon as said wireless data is stored in the radio-control-unit buffer (5A), the likelihood of the radio-control-unit buffer (5A) becoming full due to said wireless data is reduced.

Communication between a Radio Equipment Control (REC) and a Radio Equipment (RE) in a wireless network uses a Common Public Radio Interface connection. When the Radio Equipment Control and the Radio Equipment are located remote from each other, and are connected by an asymmetric transport network, such as an Optical Transport Network, path delay data is transmitted in the Common Public Radio Interface data frames. This allows the CPRI end nodes to correct for path delay asymmetry using the path delay data.

A radio device for the transmission of information has a radio-device control unit, at least one antenna, an antenna switchover unit and at least one radio unit. The radio device provides a static radio unit and at least one dynamic radio unit, wherein at least two radio units are radio-ready, so that, by means of a switchover signal of the radio-device control unit, a switchover between the radio-ready radio units can be implemented in a real-time manner.