WO2014019135A1 - 添加辅小区的方法、装置、设备和网络*** - Google Patents
添加辅小区的方法、装置、设备和网络*** Download PDFInfo
- Publication number
- WO2014019135A1 WO2014019135A1 PCT/CN2012/079421 CN2012079421W WO2014019135A1 WO 2014019135 A1 WO2014019135 A1 WO 2014019135A1 CN 2012079421 W CN2012079421 W CN 2012079421W WO 2014019135 A1 WO2014019135 A1 WO 2014019135A1
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- WIPO (PCT)
- Prior art keywords
- random access
- base station
- terminal
- message
- sequence number
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 90
- 238000013468 resource allocation Methods 0.000 claims description 236
- 230000005540 biological transmission Effects 0.000 claims description 74
- 230000004913 activation Effects 0.000 claims description 69
- 238000010586 diagram Methods 0.000 description 77
- 230000011664 signaling Effects 0.000 description 37
- 230000006854 communication Effects 0.000 description 6
- 238000004891 communication Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/002—Transmission of channel access control information
- H04W74/008—Transmission of channel access control information with additional processing of random access related information at receiving side
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
- H04W56/004—Synchronisation arrangements compensating for timing error of reception due to propagation delay
- H04W56/0045—Synchronisation arrangements compensating for timing error of reception due to propagation delay compensating for timing error by altering transmission time
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/002—Transmission of channel access control information
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/17—Selecting a data network PoA [Point of Attachment]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/08—Non-scheduled access, e.g. ALOHA
- H04W74/0833—Random access procedures, e.g. with 4-step access
Definitions
- the present invention relates to wireless communication technologies, and in particular, to a method, an apparatus, a device, and a network system for adding a secondary cell. Background technique
- a network deployment has been introduced into next-generation wireless networks in which one base station has two cells of different frequencies, and the terminals can simultaneously connect to two cells of different frequencies of one base station. At the same time, one cell that is connected to one terminal has one primary cell and the other is a secondary cell.
- 1 is a schematic diagram of signaling of a prior art network system; as shown in FIG.
- communication between a terminal and a base station may be divided into the following steps: First, the base station sends a random access resource allocation message to the terminal on the primary cell, the message The method includes a random access pilot code sequence number and a physical random access channel (Physical Random Access Channel, hereinafter referred to as PRACH) mask number, and the message uses a Cell Radio Network Temporary Identifier (C-RNTI). And scrambling the random access resource allocation message. Secondly, after the terminal applies the C-RNTI to descramble the received random access resource allocation message, the terminal sends the random access resource allocation message to the base station according to the received random access resource allocation message.
- PRACH Physical Random Access Channel
- C-RNTI Cell Radio Network Temporary Identifier
- An access request message the random access request message includes a random access pilot code; and second, the base station sends a random access response message to the terminal on the primary cell according to the received random access request message, the random access response
- the message includes a time advance command TAC (Time Advance Command, hereinafter referred to as TAC); finally, the terminal is based on
- TAC Time Advance Command
- TA Time Advance
- the primary cell and the secondary cell may belong to different base stations.
- the base station to which the primary cell belongs is called the primary base station
- the base station to which the secondary cell belongs is called the secondary base station.
- FIG. 2 is a possible base station in the prior art. Schematic diagram of network system signaling; As shown in FIG. 2, the overall communication process of the system is: First, the primary base station sends a random access resource allocation message to the terminal, and second, the terminal sends a random access request message to the secondary base station, and finally, the primary base station Send a random access response message to the terminal.
- the specific situation is as shown in FIG. 2.
- the secondary base station does not know the primary base station sends the terminal to the terminal.
- the random access resource allocation message is caused by the failure to correctly receive the random access request message.
- the primary base station does not know when the secondary base station receives the random access request message sent from the terminal, and cannot determine when to send to the terminal.
- the random access response message third, because the primary base station does not know the content of the random access request message sent by the terminal to the secondary base station, and cannot correctly send the random access response message to the terminal. Summary of the invention
- the embodiments of the present invention provide a method, a device, a device, and a network system for adding a secondary cell.
- the technical solution provided by the embodiment of the present invention is that the primary cell and the secondary cell belong to different base stations, or are the primary cell.
- the connection delay between the secondary cell and the secondary cell is relatively large, and the normal operation can still be performed when the capacity is relatively small.
- An embodiment of the present invention provides a method for adding a secondary cell, including:
- a random access resource allocation message sent by the primary base station, where the random access resource allocation message includes a random access pilot code sequence number and a physical random access channel mask sequence number;
- the terminal receives the random access response message sent by the primary base station, where the random access response message is sent by the secondary base station to the primary base station, and the secondary base station determines according to the random access request message.
- Time advance command TAC Time advance command
- the terminal adjusts the advance time TA of the secondary cell corresponding to the secondary base station according to the TAC.
- the terminal before receiving the random access resource allocation message sent by the primary base station, the terminal further receives the temporary identifier of the cell radio network sent by the primary base station, and after receiving the random access resource allocation message sent by the primary base station, the terminal applies the The cell wireless network temporary identifier descrambles the random access resource allocation message.
- An embodiment of the present invention provides a method for adding a secondary cell, including:
- the primary base station sends a random access resource allocation message and a secondary cell adder to the terminal and the secondary base station, respectively.
- the request message, the random access resource allocation message and the secondary cell addition request message both include a random access pilot code sequence number and a physical random access channel mask sequence number;
- TAC transmission message Receiving, by the primary base station, a time advance command TAC transmission message sent by the secondary base station, where the TAC transmission message is sent by the secondary base station after receiving the terminal, and carrying a sequence according to the random access pilot code
- the obtained random access request message of the random access pilot code is sent to the primary base station;
- the TAC transmission message includes a TAC obtained by the secondary base station according to the random access request message;
- the primary base station sends a random access response message carrying the TAC to the terminal, so that the terminal adjusts the advance time TA of the secondary cell corresponding to the secondary base station according to the TAC.
- the terminal sends a temporary radio network temporary identifier to the terminal, where the primary base station applies the temporary radio network identifier of the terminal to the random access.
- the resource allocation message is scrambled and then sent to the terminal.
- time advance command TAC transmission message further includes a first time when the secondary base station receives the random access request message
- the primary base station determines, according to the first moment, a second moment when the random access response message is sent.
- An embodiment of the present invention provides a method for adding a secondary cell, including:
- the secondary base station receives the secondary cell addition request message sent by the primary base station, where the secondary cell addition request message includes a random access pilot code sequence number and a physical random access channel mask sequence number;
- the secondary base station receives, according to the secondary cell addition request message, a random access request that is sent by the terminal and carries a random access pilot code obtained according to the random access pilot code sequence, and the secondary base station is removed according to the
- the random access request message obtains a time advance command TAC, and sends a time advance command TAC transmission message carrying the TAC to the primary base station, where the primary base station sends the terminal to the terminal to send the random carrying the TAC.
- an access response message where the terminal adjusts an advance time TA of the secondary cell corresponding to the secondary base station according to the TAC.
- time advance command TAC transmission message further includes receiving by the secondary base station a first time of the random access request message, for the primary base station to determine, according to the first time, a second time to send the random access response message.
- An embodiment of the present invention provides a terminal, including:
- a first unit configured to receive a random access resource allocation message sent by the primary base station, where the random access resource allocation message includes a random access pilot code sequence number and a second unit of a physical random access channel mask sequence, used to pass Sending, by the sending resource determined according to the physical random access channel mask sequence number, a random access request message to the secondary base station, where the random access request message includes a random access pilot determined according to the random access pilot code sequence number code.
- a third unit configured to receive a random access response message sent by the primary base station, where the random access response message includes, by the secondary base station, the secondary base station, according to the random access request
- the message determines the time advance command TAC.
- a fourth unit configured to adjust an advance time TA of the secondary area corresponding to the secondary base station according to the TAC.
- An embodiment of the present invention provides a primary base station, including:
- a fifth unit configured to send a random access resource allocation message and a supplementary area and a zone addition request message to the terminal and the secondary base station, where the random access resource allocation message and the auxiliary d and the area addition request message respectively include random access The pilot code sequence number and the physical random access channel mask sequence number.
- a sixth unit configured to receive a time advance command TAC transmission message sent by the secondary base station, where the TAC transmission message is sent by the secondary base station, and is carried according to the random access pilot code
- the random access request message of the random access pilot code obtained by the sequence number is sent to the primary base station; the TAC transmission message includes the TAC obtained by the secondary base station according to the random access request message.
- a seventh unit configured to send, to the terminal, a random access response message that carries the TAC, so that the terminal adjusts an advance time TA of the secondary cell corresponding to the secondary base station according to the TAC.
- time advance command TAC transmission message further includes a first time when the secondary base station receives the random access request message
- the seventh unit is further configured to determine, according to the first moment, a second moment to send the random access response message.
- An embodiment of the present invention provides a secondary base station, including:
- the eighth unit is configured to receive a secondary cell add request message sent by the primary base station, where the secondary cell add request message includes a random access pilot code sequence number and a physical random access channel mask sequence number.
- a ninth unit configured to receive, according to the secondary cell addition request message, a random access request message that is sent by the terminal and carries a random access pilot code.
- a tenth unit configured to obtain a time advance command TAC according to the random access request message, and send a time advance command TAC transmission message carrying the TAC to the primary base station, where the primary base station sends the terminal to the terminal Sending a random access response message carrying the TAC, and the terminal adjusts an advance time TA of the secondary cell corresponding to the secondary base station according to the TAC.
- time advance command TAC transmission message further includes a first time when the secondary base station receives the random access request message, where the primary base station determines to send the random access response according to the first time instant. The second moment of the message.
- a terminal device comprising:
- a first receiving unit configured to receive a random access resource allocation message sent by the primary base station, where the random access resource allocation message includes a random access pilot code sequence number and a physical random access channel mask sequence number;
- a first sending unit configured to send a random access request message to the secondary base station by using the sending resource determined according to the physical random access channel mask sequence number, where the random access request message includes the random access pilot code according to the a random access pilot code determined by the sequence number;
- a second receiving unit configured to receive a random access response message sent by the primary base station, where the random access response message includes, by the secondary base station, the secondary base station, according to the random access The time advance command TAC determined by the request message;
- a first processing unit configured to adjust, according to the TAC, an advance time TA of the secondary cell corresponding to the secondary base station.
- a primary base station device includes:
- a second sending unit configured to send a random access resource allocation message and a secondary cell add request message to the terminal and the secondary base station, where the random access resource allocation message and the secondary cell add request message both include a random access pilot Code sequence number and physical random access channel mask sequence number;
- a third receiving unit configured to receive a time advance command TAC transmission sent by the secondary base station a message, the TAC transmission message is after the secondary base station receives a random access request message that is sent by the terminal and carries a random access pilot code obtained according to the random access pilot code sequence number, Sending to the primary base station; the TAC transmission message includes a TAC obtained by the secondary base station according to the random access request message;
- a third sending unit configured to send, to the terminal, a random access response message carrying the TAC, where the terminal adjusts an advance time TA of the secondary cell corresponding to the secondary base station according to the TAC .
- the primary base station device the time advance command TAC transmission message further includes a first time when the secondary base station receives the random access request message;
- the third sending unit is further configured to determine, according to the first moment, a second moment to send the random access response message.
- a secondary base station device including:
- a fourth receiving unit configured to receive a secondary cell add request message sent by the primary base station, where the secondary cell add request message includes a random access pilot code sequence number and a physical random access channel mask sequence number;
- a fifth receiving unit configured to receive, according to the secondary cell addition request message, a random access request message that is sent by the terminal and carries a random access pilot code
- a fourth sending unit configured to obtain a time advance command TAC according to the random access request message, and send a time advance command TAC transmission message carrying the TAC to the primary base station, where the primary base station sends the message
- the terminal sends a random access response message carrying the TAC, and the terminal adjusts the advance time TA of the secondary cell corresponding to the secondary base station according to the TAC.
- the secondary base station device further includes a first time when the secondary base station receives the random access request message, where the primary base station determines, according to the first time, a sending station. The second moment of the random access response message.
- the embodiment of the present invention provides a network system, including the terminal, the primary base station, and the secondary base station provided by the foregoing embodiments.
- the embodiment of the invention provides a network system, which includes the terminal device, the primary base station device, and the secondary base station device provided by the foregoing embodiments.
- the embodiment of the invention further provides a method for adding a secondary cell, including: Receiving, by the terminal, a notification message sent by the primary base station, where the notification message includes a random access pilot code sequence number and a physical random access channel mask sequence number;
- the terminal adjusts the advance time TA of the secondary cell corresponding to the secondary base station according to the TAC.
- the notification message is a reconfiguration message or a random access resource allocation message; when the notification message is a random access resource allocation message, the terminal further receives a reconfiguration message sent by the primary base station; correspondingly, the The reconfiguration message further includes a random access response window size of the secondary cell for the terminal to determine to receive the random access response message.
- the terminal before the terminal receives the notification message sent by the primary base station, the terminal further receives the temporary identifier of the cell radio network sent by the primary base station, and after receiving the notification message sent by the primary base station, the terminal applies the temporary identifier of the cell radio network of the terminal. Performing descrambling to obtain the random access pilot code sequence number and the physical random access channel mask sequence number.
- the embodiment of the invention further provides a method for adding a secondary cell, including:
- the secondary base station receives the secondary cell addition request message sent by the primary base station, where the secondary cell addition request message includes a random access pilot code sequence number and a physical random access channel mask sequence number;
- the secondary base station receives, according to the secondary cell addition request message, a random access request that is sent by the terminal and carries a random access pilot code obtained according to the random access pilot code sequence, and the secondary base station is removed according to the
- the random access request message obtains a time advance command TAC, and sends a random access response message carrying the TAC to the terminal, where the terminal adjusts the secondary cell corresponding to the secondary base station according to the TAC.
- Advance time TA is
- the embodiment of the present invention further provides a method for adding a secondary cell, including:
- the secondary base station sends a secondary cell addition response message to the primary base station, where the secondary cell addition response message includes a random access pilot code sequence number and a physical random access channel mask sequence number;
- the secondary base station receives a random access request message that is sent by the terminal and carries a random access pilot code obtained according to the random access pilot code sequence number;
- the secondary base station obtains a time advance command TAC according to the random access request message, and sends a random access response message carrying the TAC to the terminal, where the terminal adjusts itself according to the TAC.
- the secondary cell addition response message further includes a random access response window size of the secondary cell for the terminal to determine to receive the random access response message.
- the embodiment of the invention further provides a terminal, including:
- the eleventh unit is configured to receive a notification message sent by the primary base station, where the notification message includes a random access pilot code sequence number and a physical random access channel mask sequence number.
- a twelfth unit configured to send, by using a sending resource determined according to the physical random access channel mask sequence number, a random access request message to the secondary base station, where the random access request message includes according to the random access pilot code The random access pilot code determined by the sequence number.
- a thirteenth unit configured to receive a random access response message sent by the secondary base station, where the random access response message includes a time advance command TAC determined by the secondary base station according to the random access request message.
- the fourteenth unit is configured to adjust an advance time TA of the secondary cell corresponding to the secondary base station according to the TAC.
- the embodiment of the present invention provides another auxiliary base station, including:
- the fifteenth unit is configured to receive a secondary cell addition request message sent by the primary base station, where the secondary cell addition request message includes a random access pilot code sequence number and a physical random access channel mask sequence number.
- a 16th unit configured to receive, according to the secondary cell addition request message, a random access request message that is sent by the terminal and carries a random access pilot code obtained according to the random access pilot code sequence number.
- a seventeenth unit configured to obtain a time advance command according to the random access request message
- the TAC sends a random access response message carrying the TAC to the terminal, and the terminal adjusts the advance time TA of the secondary cell corresponding to the secondary base station according to the TAC.
- the embodiment of the invention further provides a secondary base station, including:
- An eighteenth unit configured to add a response message to a secondary cell sent by the primary base station, where the secondary cell
- the add response message includes a random access pilot code sequence number and a physical random access channel mask sequence number.
- the nineteenth unit is configured to receive, by the receiving terminal, a random access request message that carries a random access pilot code obtained according to the random access pilot code sequence number.
- a twentieth unit configured to obtain a time advance command TAC according to the random access request message, and send a random access response message carrying the TAC to the terminal, where the terminal adjusts itself according to the TAC
- the secondary cell addition response message further includes a random access response window size of the secondary cell for the terminal to determine to receive the random access response message.
- a terminal device comprising:
- a sixth receiving unit configured to receive a notification message sent by the primary base station, where the notification message includes a random access pilot code sequence number and a physical random access channel mask sequence number;
- a fifth sending unit configured to send, by using a sending resource determined according to the physical random access channel mask sequence number, a random access request message to the secondary base station, where the random access request message includes according to the random access pilot code a random access pilot code determined by the sequence number;
- a seventh receiving unit configured to receive a random access response message sent by the secondary base station, where the random access response message includes a time advance command TAC determined by the secondary base station according to the random access request message;
- a second processing unit configured to adjust an advance time TA of the secondary cell corresponding to the secondary base station according to the TAC.
- the notification message is a reconfiguration message or a random access resource allocation message
- the terminal when the notification message is a random access resource allocation message, the terminal further receives a reconfiguration message sent by the primary base station;
- the reconfiguration message further includes a random access response window size of the secondary cell for the terminal to determine to receive the random access response message.
- the terminal device before receiving the notification message sent by the primary base station, the terminal further receives the temporary identifier of the cell radio network sent by the primary base station, and after receiving the notification message sent by the primary base station, the terminal applies the radio network of the cell
- the temporary identifier is descrambled, and the random access pilot code sequence number and the physical random access channel mask sequence number are obtained.
- a secondary base station device including:
- An eighth receiving unit configured to receive a secondary cell add request message sent by the primary base station, where the auxiliary The cell addition request message includes a random access pilot code sequence number and a physical random access channel mask sequence ninth receiving unit, configured to be sent by the receiving terminal according to the secondary cell add request message, and carried according to the random access guide a random access request message of a random access pilot code obtained by using a frequency code sequence number;
- a sixth sending unit configured to obtain a time advance command TAC according to the random access request message, and send a random access response message carrying the TAC to the terminal, where the terminal adjusts itself according to the TAC
- the advance time on the secondary cell corresponding to the secondary base station is ⁇ .
- a secondary base station device including:
- a seventh sending unit configured to send a secondary cell add response message to the primary base station, where the secondary cell add response message includes a random access pilot code sequence number and a physical random access channel mask sequence number; and a tenth receiving unit, configured to receive a random access request message sent by the terminal and carrying a random access pilot code obtained according to the random access pilot code sequence number;
- An eighth sending unit configured to obtain a time advance command according to the random access request message
- the TAC sends a random access response message carrying the TAC to the terminal, and the terminal adjusts the advance time ⁇ of the secondary cell corresponding to the secondary base station according to the TAC.
- the secondary cell addition response message further includes a random access response window size of the secondary cell for the terminal to determine to receive the random access response message.
- the embodiment of the present invention further provides a network system, including the terminal, the secondary base station, and the primary base station provided by the foregoing embodiments.
- the embodiment of the present invention further provides a network system, including the terminal device, the secondary base station device, and the primary base station device provided by the foregoing embodiments.
- the embodiment of the present invention further provides a method for adding a secondary cell, including:
- a random access resource allocation message sent by the secondary base station, where the random access resource allocation message includes a random access pilot code sequence number and a physical random access channel mask sequence number;
- the terminal adjusts the advance time TA of the secondary cell corresponding to the secondary base station according to the TAC.
- the method further includes: the terminal receiving a reconfiguration message sent by the primary base station, where the reconfiguration message includes a random connection of the secondary cell for the terminal to determine to receive the random access response message Entering a response window size, or the reconfiguration message includes the response window size and an activation time, and the terminal determines, according to the activation time, a time at which the random access resource allocation message is received.
- the embodiment of the present invention further provides a method for adding a secondary cell, including:
- the secondary base station After receiving the secondary cell addition request message sent by the primary base station, the secondary base station sends a random access resource allocation message to the terminal; the secondary cell add request message includes a cell radio network temporary identifier of the terminal, and the random access resource allocation message The random access pilot code sequence number and the physical random access channel mask sequence number are included;
- the secondary base station receives a random access request message that is sent by the terminal and carries a random access pilot code obtained according to the random access pilot code sequence number;
- the secondary base station obtains a time advance command TAC according to the random access request message, and sends a random access response message carrying the TAC to the terminal, where the terminal adjusts itself according to the TAC.
- the secondary cell addition request message further includes: an activation time, where the secondary base station determines, according to the activation time, a time at which the random access resource allocation message is sent.
- the embodiment of the present invention further provides a method for adding a secondary cell, including:
- the secondary base station After the secondary base station sends a secondary cell addition response message to the primary base station, the secondary base station adds a random access resource allocation message to the terminal;
- the secondary cell addition response message includes a cell radio network temporary identifier of the terminal, where the random access resource allocation message includes Random access pilot code sequence number and physical random access channel mask sequence number;
- the secondary base station receives a random access request message that is sent by the terminal and carries a random access pilot code obtained according to the random access pilot code sequence number;
- the secondary base station obtains a time advance command TAC according to the random access request message, and sends a random access response message carrying the TAC to the terminal, where the terminal adjusts itself according to the TAC.
- the secondary cell addition response message further includes: an activation time, where the secondary base station determines, according to the activation time, a time at which the random access resource allocation message is sent.
- the embodiment of the invention further provides a terminal, including:
- the twenty-first unit is configured to receive a random access resource allocation message sent by the secondary base station, where the random access resource allocation message includes a random access pilot code sequence number and a physical random access channel mask sequence number.
- a second unit configured to send a random access request message to the secondary base station by using the sending resource determined according to the physical random access channel mask sequence number, where the random access request message includes according to the random access pilot The random access pilot code determined by the code number.
- a twenty-third unit configured to receive a random access response message sent by the secondary base station, where the random access response message includes a time advance command TAC determined by the secondary base station according to the random access request message.
- the twenty-fourth unit is configured to adjust an advance time TA of the secondary cell corresponding to the secondary base station according to the TAC.
- the terminal is further configured to receive a reconfiguration message sent by the primary base station, where the reconfiguration message includes, for the terminal, determining, to receive the random access response message, a random access response window size of the secondary cell, or the reconfiguration message includes the response window size and an activation time, and the terminal determines, according to the activation time, a time at which the random access resource allocation message is received.
- the embodiment of the present invention further provides a secondary base station, including:
- a twenty-fifth unit configured to: after receiving a secondary cell add request message sent by the primary base station, send a random access resource allocation message to the terminal; the secondary cell add request message includes a temporary wireless network temporary identifier of the terminal, where The random access resource allocation message includes a random access pilot code sequence number and a physical random access channel mask sequence number.
- a twenty-sixth unit configured to receive, by the terminal, a random access request message that carries a random access pilot code obtained according to the random access pilot code sequence number.
- the TAC sends a random access response message carrying the TAC to the terminal, and the terminal adjusts the advance time TA of the secondary cell corresponding to the secondary base station according to the TAC.
- the secondary cell addition request message further includes: an activation time, where the secondary base station determines, according to the activation time, a time at which the random access resource allocation message is sent.
- the embodiment of the present invention further provides a secondary base station, including:
- a twenty-eighth unit configured to send a secondary cell add response message to the primary base station, and send a random access resource allocation message to the terminal;
- the secondary cell add response message includes a cell wireless network temporary identifier of the terminal, where the random The access resource allocation message includes a random access pilot code sequence number and a physical random access channel mask sequence number.
- a twenty-ninth unit configured to receive, by the terminal, a random access request message that carries a random access pilot code obtained according to the random access pilot code sequence number.
- a thirtieth unit configured to obtain a time advance command TAC according to the random access request message, and send a random access response message carrying the TAC to the terminal, where the terminal adjusts itself according to the TAC
- the secondary cell addition response message further includes: an activation time, where the secondary base station determines, according to the activation time, a time at which the random access resource allocation message is sent.
- a terminal device comprising:
- the eleventh receiving unit is configured to receive a random access resource allocation message sent by the secondary base station, where the random access resource allocation message includes a random access pilot code sequence number and a physical random access channel mask sequence number;
- a ninth sending unit configured to send a random access request message to the secondary base station by using the sending resource determined according to the physical random access channel mask sequence number, where the random access request message includes the random access pilot code according to the a random access pilot code determined by the sequence number;
- a twelfth receiving unit configured to receive a random access response message sent by the secondary base station, where the random access response message includes a time advance command TAC determined by the secondary base station according to the random access request message;
- a third processing unit configured to adjust an advance time TA of the secondary cell corresponding to the secondary base station according to the TAC.
- the eleventh receiving unit is further configured to receive a reconfiguration message sent by the primary base station, where the reconfiguration message includes, for the terminal, determining, to receive the random access response message, The random access response window size of the secondary cell, or the reconfiguration message includes the response window size and an activation time, and the terminal determines, according to the activation time, a time at which the random access resource allocation message is received.
- the eleventh receiving unit is further configured to: before receiving the random access resource allocation message, receive a temporary radio network temporary identifier of the terminal sent by the primary base station, where the terminal applies the The cell radio network temporary identifier descrambles the received random access resource allocation message.
- a secondary base station device including:
- a thirteenth receiving unit configured to receive a secondary cell add request message sent by the primary base station, where the tenth sending unit is configured to send a random access resource allocation message to the terminal after receiving the secondary cell add request message sent by the primary base station
- the secondary cell addition request message includes a cell radio network temporary identifier of the terminal, where the random access resource allocation message includes a random access pilot code sequence number and a physical random access channel mask sequence number;
- a fourteenth receiving unit configured to receive a random access request message that is sent by the terminal and carries a random access pilot code obtained according to the random access pilot code sequence number;
- An eleventh sending unit configured to obtain a time advance command TAC according to the random access request message, and send a random access response message carrying the TAC to the terminal, where the terminal adjusts itself according to the TAC The advance time TA on the secondary cell corresponding to the secondary base station.
- the secondary cell addition request message further includes: an activation time, and the secondary base station determines, according to the activation time, a moment when the random access resource allocation message is sent.
- a secondary base station device including:
- a twelfth sending unit configured to send a secondary cell add response message to the primary base station, and send a random access resource allocation message to the terminal;
- the secondary cell add response message includes a cell wireless network temporary identifier of the terminal, where the random The access resource allocation message includes a random access pilot code sequence number and a physical random access channel mask sequence number;
- a fifteenth receiving unit configured to be sent by the receiving terminal and carried according to the random access guide a random access request message of a random access pilot code obtained by using a frequency code sequence number;
- a thirteenth sending unit configured to obtain a time advance command according to the random access request message
- the TAC sends a random access response message carrying the TAC to the terminal, and the terminal adjusts the advance time TA of the secondary cell corresponding to the secondary base station according to the TAC.
- the secondary cell addition response message further includes: an activation time, and the secondary base station determines, according to the activation time, a moment when the random access resource allocation message is sent.
- the embodiment of the present invention further provides a network system, including the terminal, the secondary base station, and the primary base station provided by the foregoing embodiments.
- the embodiment of the present invention further provides a network system, including the terminal device, the secondary base station device, and the primary base station device provided by the foregoing embodiments.
- the method, device, device, and network system for adding a secondary cell obtain a unified random access pilot code sequence number and a PRACH mask sequence number and a cell wireless of a terminal by communicating between a primary base station and a secondary base station.
- the network temporary identifier, and the random access pilot code sequence number and the PRACH mask sequence number are scrambled by the terminal radio network temporary identifier of the terminal, and then sent to the terminal for the terminal application cell radio network temporary identifier descrambled random access pilot code
- the random access pilot code is obtained and sent to the secondary base station, and the secondary base station determines the time advance command TAC according to the random access request message carrying the random access pilot code, and sends the time advance command to the TAC.
- the terminal is configured to adjust, by the terminal, the advance time TA of the secondary cell corresponding to the secondary base station.
- the embodiment of the present invention is applicable to a base station where the primary cell and the secondary cell are different, or when the connection delay between the primary cell and the secondary cell is relatively large, and the capacity is relatively small, the technical solution provided by the embodiment of the present invention can still work normally. . DRAWINGS
- FIG. 1 is a schematic diagram of signaling of a prior art network system
- FIG. 2 is a schematic diagram of network system signaling that may occur in the prior art
- FIG. 3 is a schematic flowchart 1 of an embodiment of a method for adding a secondary cell according to the present invention
- FIG. 5 is a schematic flowchart of a method for adding a secondary cell according to an embodiment of the present invention
- FIG. 6 is a schematic diagram of signaling of Embodiment 1 of a network system according to the present invention
- FIG. 7 is a schematic structural diagram 1 of an apparatus for adding a secondary cell according to the present invention
- FIG. 8 is a second schematic structural diagram of an apparatus for adding a secondary cell according to the present invention
- FIG. 10 is a schematic structural diagram of an embodiment of an apparatus for adding a secondary cell according to the present invention
- FIG. 11 is a schematic structural diagram of an embodiment of an apparatus for adding a secondary cell according to the present invention
- FIG. 13 is a schematic structural diagram 1 of an embodiment of a network system according to the present invention.
- FIG. 14 is a schematic structural diagram 2 of an embodiment of a network system according to the present invention.
- FIG. 15 is a schematic flowchart of a method for adding a secondary cell according to an embodiment of the present invention
- FIG. 16 is a schematic flowchart of a method for adding a secondary cell according to the present invention
- Embodiment 3 of a network system according to the present invention is a schematic signaling diagram of Embodiment 3 of a network system according to the present invention.
- FIG. 19 is a schematic flowchart diagram of a method for adding a secondary cell according to the present invention
- FIG. 20 is a schematic diagram of signaling of a fourth embodiment of a network system according to the present invention.
- FIG. 21 is a schematic signaling diagram of Embodiment 5 of a network system according to the present invention.
- FIG. 22 is a schematic structural diagram of an embodiment of an apparatus for adding a secondary cell according to the present invention
- FIG. 23 is a schematic structural diagram of an apparatus for adding a secondary cell according to the present invention
- FIG. 25 is a schematic structural diagram of an embodiment of an apparatus for adding a secondary cell according to the present invention
- FIG. 26 is a schematic structural diagram of an embodiment of an apparatus for adding a secondary cell according to the present invention
- FIG. 28 is a schematic structural diagram 3 of an embodiment of a network system according to the present invention.
- 29 is a schematic structural diagram 4 of an embodiment of a network system according to the present invention.
- FIG. 30 is a schematic flowchart diagram of a method for adding a secondary cell according to an embodiment of the present invention
- FIG. FIG. 31 is a schematic flowchart diagram of a method for adding a secondary cell according to the present invention
- FIG. 32 is a schematic diagram of signaling of a sixth embodiment of a network system according to the present invention
- FIG. 33 is a schematic flowchart IX of an embodiment of a method for adding a secondary cell according to the present invention.
- FIG. 34 is a schematic diagram of signaling of Embodiment 7 of a network system according to the present invention.
- 35 is a schematic structural diagram 7 of an embodiment of an apparatus for adding a secondary cell according to the present invention.
- 36 is a schematic structural diagram 8 of an embodiment of an apparatus for adding a secondary cell according to the present invention.
- FIG. 37 is a schematic structural diagram IX of an embodiment of an apparatus for adding a secondary cell according to the present invention.
- FIG. 38 is a schematic structural diagram 7 of an embodiment of an apparatus for adding a secondary cell according to the present invention.
- 39 is a schematic structural diagram 8 of an embodiment of an apparatus for adding a secondary cell according to the present invention.
- FIG. 40 is a schematic structural diagram IX of an embodiment of an apparatus for adding a secondary cell according to the present invention.
- 41 is a schematic structural diagram 5 of an embodiment of a network system according to the present invention.
- FIG. 42 is a schematic structural diagram 6 of an embodiment of a network system according to the present invention.
- the technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention.
- the embodiments are a part of the embodiments of the invention, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.
- FIG. 3 is a schematic flowchart 1 of a method for adding a secondary cell according to the present invention; as shown in FIG. 3, the method is a schematic flowchart of a method, including the following steps:
- Step 1 101 The terminal receives a random access resource allocation message sent by the primary base station, where the random access resource allocation message includes a random access pilot code sequence number and a physical random access channel mask sequence number.
- the terminal in the embodiment of the present invention firstly obtains contact with the primary base station, and the cell where the terminal is located may be the primary cell to which the primary base station belongs, or may be the secondary cell to which the secondary base station belongs, when the terminal is in the secondary cell,
- the secondary base station needs to communicate with the primary base station to obtain the same signaling, so that the terminal and the secondary base station can also perform normal communication.
- the primary base station sends a random access resource allocation message to the terminal, and the following
- the machine access resource allocation message includes a random access pilot code sequence number and a PRACH mask sequence number.
- Step 1102 The terminal sends a random access request message to the secondary base station by using the sending resource determined according to the physical random access channel mask sequence number, where the random access request message includes the random access pilot code sequence number. Determine the random access pilot code.
- the terminal determines the resource of the random access request message sent to the secondary base station according to the PRACH mask sequence number, and the terminal further determines the random access pilot code sent to the secondary base station according to the received random access pilot code sequence number.
- Step 1103 The terminal receives a random access response message sent by the primary base station, where the random access response message includes, by the secondary base station, the secondary base station sends the random access request according to the random access request.
- the message determines the time advance command TAC.
- the terminal receives the time advance command TAC sent by the primary base station, and the time advance command TAC is sent to the primary base station by the secondary base station, and the time advance command TAC is determined by the secondary base station according to the random access request message sent by the terminal.
- Step 1104 The terminal adjusts an advance time TA of the secondary cell corresponding to the secondary base station according to the TAC.
- the terminal adjusts its own advance time TA on the corresponding cell according to the received time advance command TAC.
- the terminal before receiving the random access resource allocation message sent by the primary base station, the terminal further receives the temporary identifier of the cell radio network sent by the primary base station, and the terminal receives the random access resource allocation message sent by the primary base station, and then applies the The cell radio network temporary identifier of the terminal descrambles the random access resource allocation message.
- the temporary identifier of the cell radio network is sent by the primary base station to the terminal in advance, that is, before the terminal receives the random access pilot code sequence number and the physical random access channel mask sequence number sent by the primary base station, the terminal has received the primary base station.
- Sending a temporary identifier of the cell radio network the terminal applying the radio network temporary identifier of the cell to descramble the received random access resource allocation message, to obtain the random access pilot code sequence number and the physical random access channel mask Serial number.
- FIG. 4 is a schematic flowchart of a method for adding a secondary cell according to an embodiment of the present invention.
- FIG. 4 is a schematic flowchart of a method for a primary base station, which includes the following steps:
- Step 1201 The primary base station sends a random access resource allocation message and a secondary cell addition request message to the terminal and the secondary base station, respectively, the random access resource allocation message and the secondary cell addition request.
- the messages include a random access pilot code sequence number and a physical random access channel mask sequence number.
- the primary base station sends the random access pilot code sequence number and the PRACH mask sequence number to the secondary base station, and the primary base station also sends the same random access pilot code sequence number and PRACH mask sequence number to the terminal.
- Step 1201 The primary base station receives a time advance command TAC transmission message sent by the secondary base station, where the TAC transmission message is sent by the secondary base station, and is carried according to the random access pilot.
- the random access request message of the random access pilot code obtained by the code sequence is sent to the primary base station; the TAC transmission message includes a TAC obtained by the secondary base station according to the random access request message.
- the primary base station receives the time advance command TAC transmission message sent by the secondary base station, and the time advance command TAC transmission message is sent by the secondary base station to the primary base station, and the time advance command TAC transmission message is sent by the secondary base station to the secondary base station according to the terminal.
- the time advance command TAC transmission message includes the TAC obtained by the secondary base station according to the random access request message.
- Step 1203 The primary base station sends a random access response message carrying the TAC to the terminal, so that the terminal adjusts an advance time TA of the secondary cell corresponding to the secondary base station according to the TAC. .
- the primary base station sends a TAC to the terminal, so that the terminal adjusts the advance time T A of the secondary cell corresponding to the secondary base station according to the TAC.
- the terminal sends a temporary radio network temporary identifier to the terminal, where the primary base station applies the cell radio network temporary identifier of the terminal to the random access.
- the resource allocation message is scrambled and then sent to the terminal.
- the terminal wireless network temporary identifier is also sent to the terminal, and the primary base station applies the cell wireless network temporary identifier to scramble the random access resource allocation message. Then send it to the terminal.
- the time advance command TAC transmission message received by the primary base station includes a first time when the secondary base station receives the random access request message, and the primary base station determines to send the random connection according to the first time Enter the second moment of the response message.
- the time when the secondary base station receives the random access request message sent by the terminal is the first time
- the time when the primary base station determines to send the random access response message to the terminal according to the first time is Two moments.
- FIG. 5 is a schematic flowchart of a method for adding a secondary cell according to an embodiment of the present invention. As shown in FIG. 5, the method is a schematic flowchart of a method for a secondary base station, and includes the following steps:
- Step 1301 The secondary base station receives a secondary cell addition request message sent by the primary base station, where the secondary cell addition request message includes a random access pilot code sequence number and a physical random access channel mask sequence number.
- the secondary base station receives the random access pilot code sequence number and the PRACH mask sequence number sent by the primary base station.
- Step 1302 The secondary base station receives, according to the secondary cell addition request message, a random access request message that is sent by the terminal and carries a random access pilot code obtained according to the random access pilot code sequence number.
- the secondary base station determines, according to the received random access pilot code sequence number and the physical random access channel mask sequence number, the random access pilot code sent by the terminal, where the random access pilot code is randomly received by the pilot code sequence number. determine.
- Step 1303 The secondary base station obtains a time advance command TAC according to the random access request message, and sends a time advance command TAC transmission message carrying the TAC to the primary base station, where the primary base station sends the message to the primary base station.
- the terminal sends a random access response message carrying the TAC, and the terminal adjusts the advance time TA of the secondary cell corresponding to the secondary base station according to the TAC.
- the secondary base station determines, according to the received random access request, the time advance command TAC, and sends the transport message carrying the time advance command TAC to the primary base station, so that the primary base station determines to send according to the time advance command TAC.
- the TAC is provided to the terminal, so that the terminal adjusts the advance time TA of the secondary cell corresponding to the secondary base station according to the TAC.
- the time advance command TAC transmission message sent by the secondary base station further includes a first time when the secondary base station receives the random access request message, where the primary base station determines to send the according to the first time The second moment of the random access response message.
- the time when the secondary base station receives the random access request message sent by the terminal is the first time
- the time when the primary base station determines to send the random access response message to the terminal according to the first time is the second time.
- FIG. 6 is a schematic diagram of signaling of Embodiment 1 of a network system according to the present invention; as shown in FIG. 6, the signaling is transmitted in five steps.
- Step 1 The primary base station sends a secondary cell addition request message to the secondary base station;
- Step 2 The primary base station sends a random access resource allocation message to the terminal.
- the secondary cell addition request message and the random access resource allocation message both include a random access pilot code sequence number and a PRACH mask sequence number.
- the sequence of steps 1 and 2 may be Step 3: The terminal sends a random access request message to the secondary base station according to the random access resource allocation message sent by the primary base station, where the random access request message includes a random access pilot code; Step 4: the secondary base station according to the received The random access request message sends a time advance command TAC transmission message to the primary base station, where the time advance command TAC transmission message includes a first time when the secondary base station receives the random access request message; and the primary base station according to the first time Determining a second time when the random access response message is sent; Step 5: The primary base station sends a random access response message to the terminal according to the received time advance command TAC transmission message, where the random access response message includes the secondary base station sending to the primary a time advance command TAC determined by the base station according to the random access request message sent by the terminal, for the terminal Adjusting the advance time TA of the corresponding cell according to the received random access response message, where, before step 2, the terminal further receives the temporary identifier of the cell radio
- the primary base station sends a secondary cell addition request message to the secondary base station, so that the secondary base station can correctly receive the random access request message sent by the terminal, and then the secondary base station And sending the time advance command transmission message to the primary base station according to the received random access request message, so as to ensure that the content and time of the random access response message are correctly sent by the primary base station to the terminal according to the transmission message, where the primary cell and the secondary Small differences belong to different base stations, or can still work normally when the connection delay between the primary cell and the secondary cell is relatively large and the capacity is relatively small.
- FIG. 7 is a schematic structural diagram 1 of an apparatus for adding a secondary cell according to the present invention.
- the terminal includes a first unit 1 11A, a second unit 112A, a third unit 1 13A, and a fourth unit 1 14A, where
- the first unit 111A is configured to receive a random access resource allocation message sent by the primary base station, where the random access resource allocation message includes a random access pilot code sequence number and a physical random access channel mask sequence number; And sending a random access request message to the secondary base station by using the sending resource determined according to the physical random access channel mask sequence number, where the random access request message includes random access determined according to the random access pilot code sequence number a pilot code;
- the third unit 1 13A is configured to receive a random access response message sent by the primary base station, and the random access response
- the message includes a time advance command TAC determined by the secondary base station to be sent by the secondary base station according to the random access request message, and the fourth unit 114A is configured to adjust itself according to the TAC to the
- the terminal before the first unit 1 11A receives the random access resource allocation message sent by the primary base station, the terminal further receives a temporary identifier of the cell radio network of the terminal sent by the primary base station, where the terminal receives the random access sent by the primary base station.
- the cell wireless network temporary identifier of the application terminal After the resource allocation message, the cell wireless network temporary identifier of the application terminal performs descrambling on the random access resource allocation message.
- FIG. 8 is a schematic structural diagram 2 of an apparatus for adding a secondary cell according to the present invention.
- the primary base station includes a fifth unit 121A, a sixth unit 122A, and a seventh unit 123A, wherein the fifth unit 121A is configured to use And respectively, the random access resource allocation message and the auxiliary area and the area addition request message are sent to the terminal and the secondary base station, where the random access resource allocation message and the auxiliary d and the area addition request message respectively include a random access pilot code sequence number and a physical random access channel mask sequence number;
- the sixth unit 122 A is configured to receive a time advance command TAC transmission message sent by the secondary base station, where the TAC transmission message is sent by the secondary base station after receiving the terminal a random access request message of the random access pilot code obtained according to the random access pilot code sequence, sent to the primary base station; the TAC transmission message includes the secondary base station according to the random a TAC obtained by accessing the request message;
- the seventh unit 123A is configured to send, to
- the fifth unit 121A further sends a temporary radio network temporary identifier of the terminal to the terminal, where the primary base station applies the temporary radio network identifier of the terminal to the The random access resource allocation message is scrambled and then sent to the terminal.
- the primary base station includes a first time when the secondary base station receives the random access request message; and the seventh unit is further configured to use the first The second time at which the random access response message is sent is determined at a time.
- FIG. 9 is a schematic structural diagram 3 of an apparatus for adding a secondary cell according to the present invention.
- the secondary base station includes an eighth unit 131A, a ninth unit 132A, and a tenth unit 133A; wherein the eighth unit 131A is configured to receive a secondary cell addition request message sent by the primary base station, where the secondary cell addition request message includes a random access pilot code sequence number and a physical random access channel mask sequence number;
- the unit 132A is configured to receive, according to the secondary cell addition request message, a random access request message that is sent by the terminal and that carries the random access pilot code.
- the tenth unit 133A is configured to obtain a time advance command according to the random access request message.
- TAC Transmitting, by the TAC, a time advance command TAC transmission message carrying the TAC to the primary base station, where the primary base station sends a random access response message carrying the TAC to the terminal, where the terminal is configured according to the terminal
- the TAC adjusts its own advance time TA on the secondary cell corresponding to the secondary base station.
- the time advance command TAC transmission message includes a first time when the secondary base station receives the random access request message, where the primary base station determines to send according to the first time The second moment of the random access response message.
- FIG. 10 is a schematic structural diagram 1 of an embodiment of a device for adding a secondary cell according to the present invention.
- the terminal device includes: a first receiving unit 111B, a first sending unit 112B, The second receiving unit 113B, the first processing unit 114B, wherein the first receiving unit 111B is configured to receive a random access resource allocation message sent by the primary base station, where the random access resource allocation message includes a random access pilot code a sequence number and a physical random access channel mask sequence number; the first sending unit 112B is configured to send a random access request message to the secondary base station by using the sending resource determined according to the physical random access channel mask sequence number, the random access request The message includes a random access pilot code determined according to the random access pilot code sequence number; the second receiving unit 113B is configured to receive a random access response message sent by the primary base station, where the random access response message includes Determining, by the secondary base station, the time advance determined by the secondary base station
- FIG. 11 is a schematic structural diagram 2 of an embodiment of a device for adding a secondary cell according to the present invention.
- the primary base station device includes: a second sending unit 121B and a third receiving unit. 122B.
- the second sending unit 121B is configured to send a random access resource allocation message and a secondary cell add request message to the terminal and the secondary base station, respectively, where the random access resource allocation message and the secondary cell add request message both include random access.
- the third receiving unit 122B is configured to receive a time advance command TAC transmission message sent by the secondary base station, where the TAC transmission message is that the secondary base station receives the And sending, by the terminal, a random access request message carrying a random access pilot code obtained according to the random access pilot code sequence, and sending the message to the primary base station
- the TAC transmission message includes a TAC obtained by the secondary base station according to the random access request message
- the third sending unit 123B is configured to send, to the terminal, a random access response message carrying the TAC, to And providing, by the terminal, an advance time TA of the secondary cell corresponding to the secondary base station according to the TAC.
- the time advance command TAC transmission message further includes a first time when the secondary base station receives the random access request message
- the third sending unit is further configured to determine, according to the first moment, a second moment to send the random access response message.
- FIG. 12 is a schematic structural diagram 3 of an embodiment of a device for adding a secondary cell according to the present invention.
- the secondary base station device includes: a fourth receiving unit 131B and a fifth receiving unit. 132B. Fourth transmitting unit 133B.
- the fourth receiving unit 131B is configured to receive a secondary cell add request message sent by the primary base station, where the secondary cell add request message includes a random access pilot code sequence number and a physical random access channel mask sequence number;
- the unit 132B is configured to receive, according to the secondary cell addition request message, a random access request message that is sent by the terminal and that carries the random access pilot code.
- the fourth sending unit 133B is configured to obtain a time advance according to the random access request message. Commanding a TAC, and transmitting, to the primary base station, a time advance command TAC transmission message carrying the TAC, where the primary base station sends a random access response message carrying the TAC to the terminal, for the terminal Adjusting an advance time TA of the secondary cell corresponding to the secondary base station according to the TAC.
- the time advance command TAC transmission message further includes a first time when the secondary base station receives the random access request message, where the primary base station determines according to the first time Sending a second time of the random access response message.
- FIG. 13 is a schematic structural diagram 1 of an embodiment of a network system according to the present invention; as shown in FIG. 13, the system includes a terminal 11A, a primary base station 12A, and a secondary base station 13A.
- the terminal 11A receives the cell radio network temporary identifier of the terminal sent by the primary base station 12A, and applies the cell radio network temporary identifier to descramble the received random access resource allocation message, and according to the descrambled random access.
- the resource allocation message sends a random access request message to the secondary base station 13A.
- the terminal 11A receives the random access response message sent by the primary base station 12A, and adjusts its own advance time TA in the corresponding cell according to the received random access response message.
- the primary base station 12A transmits a secondary cell addition request message to the secondary base station 13A, and the primary base station 12A transmits a random access resource allocation to the terminal 11A.
- the terminal wireless network temporary identifier of the terminal is also sent to the terminal, and the primary base station scrambles the random access resource allocation message according to the temporary identifier of the cell wireless network, and then sends the scrambled random access resource allocation message to the terminal.
- the primary base station 12A sends a random access response message to the terminal 1 1A according to the received time advance command transmission message; the secondary base station 13A receives the secondary cell addition request message sent by the primary base station 12A, and the secondary base station 13A receives the random access request message according to the received message.
- the time advance command transmission message TAC is transmitted to the primary base station 12A.
- FIG. 14 is a schematic structural diagram 2 of an embodiment of a network system according to the present invention; as shown in FIG. 14, the system includes: a terminal device 1 1B, a primary base station device 12B, and a secondary base station device 13B.
- the device is used to implement the technical solution of the device embodiment shown in FIG. 13, and the principle and technical effect are similar, and details are not described herein again.
- FIG. 15 is a schematic flowchart of a method for adding a secondary cell according to an embodiment of the present invention. As shown in FIG. 15, the method is a schematic flowchart of a method, including the following steps:
- Step 2101 The terminal receives the notification message sent by the primary base station, where the notification message includes a random access pilot code sequence number and a physical random access channel mask sequence number.
- the terminal receives the random access pilot code sequence number and the PRACH mask sequence number sent by the primary base station.
- Step 2102 The terminal sends a random access request message to the secondary base station by using the sending resource determined according to the physical random access channel mask sequence number, where the random access request message includes the random access pilot code sequence number. Determined random access pilot code;
- the terminal determines, according to the received PRACH mask sequence number, the resource of the random access request message sent to the secondary base station, and the terminal further determines the random access pilot code that is sent to the secondary base station according to the received random access pilot code sequence number.
- Step 2103 The terminal receives a random access response message sent by the secondary base station, where the random access response message includes a time advance command TAC determined by the secondary base station according to the random access request message.
- the terminal receives the time advance command TAC sent by the secondary base station, and the time advance command TAC is determined by the secondary base station according to the received random access request message.
- Step 2104 The terminal adjusts an advance time TA of the secondary cell corresponding to the secondary base station according to the TAC.
- the terminal adjusts itself according to the time advance command sent by the secondary base station. Advance time TA on the cell.
- the notification message may be a reconfiguration message, and the reconfiguration message further includes, for the terminal, determining, by using the terminal, that the random access response message is received, The random access response window size of the secondary cell.
- the notification message may also be a random access resource allocation message.
- the terminal may further receive a reconfiguration message sent by the primary base station, where the reconfiguration message includes, for the terminal, determining to receive The random access response window size of the secondary cell used by the random access response message.
- the terminal receives the random access pilot code sequence number and the PRACH mask sequence number sent by the primary base station, and receives the response window size sent by the primary base station, and the terminal determines, according to the response window size, the received random access response message.
- Time Window The terminal may receive the response window size, the random access pilot code sequence number, and the PRACH mask sequence number sent by the primary base station in one step, or may receive the response window size, the random access pilot code sequence number, and the PRACH mask of the primary base station in two steps.
- Code serial number Specifically, when the notification message received by the terminal is a reconfiguration message, the information included in the notification message includes: a random access pilot code sequence number, a PRACH mask sequence number, and a reconfiguration message included for determining by the terminal.
- the random access response window size of the secondary cell for receiving the random access response message when the notification message received by the terminal is a random access resource allocation message, the information included in the notification message is: The pilot code sequence number, the PRACH mask sequence number, and the notification message further includes a random access response window of the secondary cell that is included in the reconfiguration message for the terminal to determine to receive the random access response message size.
- the terminal in the method for adding a secondary cell before receiving the notification message sent by the primary base station, the terminal further receives a temporary identifier of the cell radio network of the terminal sent by the primary base station, where the terminal receives the primary base station.
- the cell radio network temporary identifier of the terminal is used for descrambling, and the random access pilot code sequence number and the physical random access channel mask sequence number are obtained.
- the terminal receives the random access pilot code sequence number sent by the primary base station and
- the terminal Before the PRACH mask sequence number, the terminal further receives the cell radio network temporary identifier of the terminal sent by the primary base station, and the terminal applies the cell radio network temporary identifier to descramble the received random access resource allocation message to obtain a random access pilot. Code sequence number and the physical random access channel mask sequence number.
- FIG. 16 is a schematic flowchart 5 of an embodiment of a method for adding a secondary cell according to the present invention.
- the method is a schematic diagram of a method for a secondary base station, and includes the following steps:
- Step 2301 The secondary base station receives the secondary cell addition request message sent by the primary base station, where the secondary cell addition request message includes a random access pilot code sequence number and a physical random access channel mask sequence number.
- the secondary base station receives the random access pilot code sequence number and the physical random access channel mask sequence number sent by the primary base station.
- Step 2302 The secondary base station receives, according to the secondary cell addition request message, a random access request message that is sent by the terminal and carries a random access pilot code obtained according to the random access pilot code sequence number.
- the secondary base station receives the random access request message sent by the terminal according to the random access pilot code sequence number and the physical random access channel mask sequence number sent by the primary base station, and the random access guide included in the random access request message
- the frequency code is determined by the random access pilot code sequence number.
- Step 2303 The secondary base station obtains a time advance command TAC according to the random access request message, and sends a random access response message carrying the TAC to the terminal, where the terminal adjusts itself according to the TAC.
- the secondary base station determines the time advance command TAC according to the received random access request message, and sends the time advance command TAC to the terminal, and the terminal adjusts its own advance time TA in the corresponding cell according to the TAC.
- FIG. 17 is a schematic diagram of signaling of Embodiment 2 of a network system according to the present invention; as shown in FIG. 17, the signaling is transmitted in five steps.
- Step 1 The primary base station sends a secondary cell addition request message to the secondary base station, where the secondary cell addition request message includes a random access pilot code sequence number and a PRACH mask sequence number.
- Step 2 The primary base station sends a reconfiguration message to the terminal, where the reconfiguration is performed. The message includes a response window size.
- Step 3 The primary base station sends a random access resource allocation message to the terminal, where the random access resource allocation message includes a random access pilot code sequence number and a PRACH mask sequence number.
- Step 4 The terminal according to the received random number
- the access resource allocation message sends a random access request message to the secondary base station, where the random access request message includes a random access pilot code.
- Step 5 The secondary base station sends a random access response message to the terminal according to the received random access request message.
- the random access response message includes a time advance command TAC, so that the terminal adjusts the advance time TA of the corresponding cell according to the time advance command TAC; wherein, the terminal determines to receive the random according to the size of the response window included in the received reconfiguration message. Accessing the time window of the response message to receive the random access response message.
- Step 2 is optional, when When the step 2 does not exist, the terminal receives the random access response message by using a default time window.
- the terminal before the terminal receives the random access resource allocation message sent by the primary base station, the terminal further receives the cell wireless of the terminal sent by the host. a network temporary identifier, wherein the primary base station applies the radio network temporary identifier of the cell to scramble the random access resource allocation message, and then sends the scrambled random access resource allocation message to the terminal, and the terminal applies the radio to the terminal.
- the network temporary identifier descrambles the random access resource allocation message received later, and the temporary identifier of the cell radio network is allocated to the terminal by the primary base station in advance.
- the secondary base station sends a secondary cell addition request message to the secondary base station, so that the secondary base station can correctly receive the random access request sent by the terminal in a subsequent step.
- the message and the content and the time when the random access response message is correctly sent to the terminal in the embodiment of the present invention, when the primary cell and the secondary cell belong to different base stations, or when the connection delay between the primary cell and the secondary cell is relatively large, the capacity comparison is performed. When I was young, I still can work normally.
- FIG. 18 is a schematic diagram of signaling of Embodiment 3 of the network system according to the present invention; as shown in FIG. 18, the transmission of the signaling is divided into four steps.
- Step 1 The primary base station sends a secondary cell addition request message to the secondary base station, where the secondary cell addition request message includes a random access pilot code sequence number and a PRACH mask sequence number.
- Step 2 The primary base station sends a reconfiguration message to the terminal, where the reconfiguration is performed.
- the message includes a random access pilot code sequence number and a PRACH mask sequence number.
- the reconfiguration message further includes a response window size.
- Steps 3 and 4 are the same as steps 4 and 5 in the signaling diagram of the second embodiment. No longer.
- the terminal when the response window size in the reconfiguration message does not exist, the terminal receives the random access response message by using a default time window.
- the terminal before the terminal receives the reconfiguration message sent by the primary base station, the terminal further receives the cell radio network temporary identifier of the terminal sent by the primary base station, so that the primary base station applies the cell radio network temporary identifier to scramble the random access resource allocation message. And then sending the scrambled random access resource allocation message to the terminal, where the terminal applies the cell radio network temporary identifier to descramble the received random access resource allocation message, that is, the cell radio network temporary identifier is The primary base station is allocated to the terminal in advance.
- the method, the device, the device, and the network system for adding a secondary cell add a request message to the secondary cell of the secondary base station by the primary base station, so that the secondary base station can correctly receive the random access request message sent by the terminal in the subsequent step. Then, the content and the time of the random access response message are sent to the terminal correctly.
- the primary cell and the secondary cell belong to different base stations, Or when the connection delay between the primary cell and the secondary cell is relatively large and the capacity is relatively small, the normal operation can still be performed.
- FIG. 19 is a schematic flowchart of a method for adding a secondary cell according to an embodiment of the present invention. As shown in FIG. 19, the method is a schematic flowchart of a method for a secondary base station, and includes the following steps:
- Step 3301 The secondary base station sends a secondary cell addition response message to the primary base station, where the secondary cell addition response message includes a random access pilot code sequence number and a physical random access channel mask sequence number. Specifically, the secondary base station sends a random sequence to the primary base station. The access pilot code sequence number and the physical random access channel mask sequence number.
- Step 3302 The secondary base station receives a random access request message that is sent by the terminal and carries a random access pilot code obtained according to the random access pilot code sequence number.
- the secondary base station receives the random access request message sent by the terminal according to the random access pilot code sequence number and the PRACH mask sequence number sent by the primary base station to the terminal, and the random access request message is sent in the random access request message.
- the carried random access pilot code is determined by the random access pilot code sequence number.
- Step 3303 The secondary base station obtains a time advance command according to the random access request message.
- the TAC sends a random access response message carrying the TAC to the terminal, and the terminal adjusts the advance time TA of the secondary cell corresponding to the secondary base station according to the TAC.
- step 2303 is the same as step 2303, and details are not described herein again.
- the secondary base station in the method for adding a secondary cell further includes, by the terminal, determining, by the terminal, the random access of the secondary cell for receiving the random access response message. Response window size.
- the secondary cell adds a response message to the primary base station, except for the random access pilot code sequence number and the PRACH mask sequence number, and the response window size, and the terminal determines the receiving station according to the response window size.
- the time window of the random access response message is a response message to the primary base station, except for the random access pilot code sequence number and the PRACH mask sequence number, and the response window size.
- FIG. 20 is a schematic diagram of signaling of Embodiment 4 of a network system according to the present invention; as shown in FIG. 20, the signaling is transmitted in five steps.
- Step 1 The secondary base station sends a secondary cell addition response message to the primary base station, where the secondary cell addition response message includes a random access pilot code sequence number and a PRACH mask sequence number.
- the secondary cell addition response message further includes a response window size.
- Steps 2, 3, 4, and 5 are the same as those in the signaling diagram of the second embodiment, and are not described here.
- step 2 is optional.
- the terminal receives the random access response message by using a default time window.
- the terminal Before the terminal receives the random access resource allocation message sent by the primary base station, the terminal further receives the cell radio network temporary identifier of the terminal sent by the host, so that the primary base station applies the cell radio network temporary identifier to scramble the random access resource allocation message. And then sending the scrambled random access resource allocation message to the terminal, where the terminal applies the cell radio network temporary identifier to descramble the received random access resource allocation message, that is, the cell radio network temporary identifier is The primary base station is allocated to the terminal in advance.
- the secondary base station sends a secondary cell addition response message to the primary base station, thereby ensuring that after the primary base station sends a random access resource allocation message to the terminal, the secondary base station
- the random access request message sent by the terminal can be correctly received, and the secondary base station can correctly send the content and time of the random access response message to the terminal according to the random access request message.
- the capacity can still work normally when the capacity is relatively small.
- FIG. 21 is a schematic diagram of signaling of Embodiment 5 of the network system according to the present invention; as shown in FIG. 21, the signaling is transmitted in four steps.
- Step 1 The secondary base station sends a secondary cell addition response message to the primary base station, where the secondary cell addition response message includes a random access pilot code sequence number and a PRACH mask sequence number.
- the secondary cell addition response message further includes a response window size.
- Steps 2, 3, and 4 are the same as those in the signaling diagram of the third embodiment, and are not described here.
- the random access pilot code sequence number, the PRACH mask sequence number, and the response window size (optional) in the signaling diagram of the third embodiment are determined by the primary base station.
- the terminal receives the random access response message by using a default time window.
- the terminal before the terminal receives the reconfiguration message sent by the primary base station, the terminal further receives the cell radio network temporary identifier of the terminal sent by the primary base station, so that the primary base station applies the cell radio network temporary identifier to the random access resource allocation.
- the secondary base station sends a secondary cell addition response message to the primary base station, so that the primary base station can correctly receive the reconfiguration message after the primary base station sends the reconfiguration message to the terminal.
- the random access request message sent by the terminal, and the secondary base station can correctly send the content and time of the random access response message to the terminal according to the random access request message.
- the capacity can still work normally when the capacity is relatively small.
- FIG. 22 is a schematic structural diagram 4 of an apparatus for adding a secondary cell according to the present invention.
- the terminal includes an eleventh unit 21 1A, a twelfth unit 212A, a thirteenth unit 213A, and a fourteenth unit.
- the eleventh unit 211A is configured to receive a notification message sent by the primary base station, where the notification message includes a random access pilot code sequence number and a physical random access channel mask sequence number; and the twelfth unit 212A is configured to The sending resource determined by the physical random access channel mask sequence number sends a random access request message to the secondary base station, where the random access request message includes a random access pilot code determined according to the random access pilot code sequence number;
- the thirteenth unit 213A is configured to receive a random access response message sent by the secondary base station, where the random access response message includes a time advance command TAC determined by the secondary base station according to the random access request message;
- the unit 214A is configured to adjust an advance time TA of the secondary cell corresponding to the secondary base station according to the TAC.
- the eleventh unit 211A receives a notification message sent by the primary base station, where the notification message is a reconfiguration message or a random access resource allocation message, where the notification message is random access.
- the terminal further receives the reconfiguration message sent by the primary base station.
- the reconfiguration message further includes, by the terminal, the random connection of the secondary cell for receiving the random access response message. Into the response window size.
- the eleventh unit 211A before receiving the notification message, the eleventh unit 211A further receives a cell radio network temporary identifier of the terminal sent by the primary base station, and after the terminal receives the notification message sent by the primary base station, the cell radio of the application terminal The network temporary identifier is descrambled to obtain the The random access pilot code sequence number and the physical random access channel mask sequence number.
- FIG. 23 is a schematic structural diagram 5 of an apparatus for adding a secondary cell according to the present invention.
- the secondary base station includes a fifteenth unit 231A, a sixteenth unit 232A, and a seventeenth unit 233A, wherein the fifteenth unit
- the unit 231A is configured to receive a secondary cell add request message sent by the primary base station, where the secondary cell add request message includes a random access pilot code sequence number and a physical random access channel mask sequence number;
- the secondary cell addition request message receives a random access request message that is sent by the terminal and carries a random access pilot code obtained according to the random access pilot code sequence;
- the seventeenth unit 233A is configured to perform the random access according to the random access
- the incoming request message obtains a time advance command TAC, and sends a random access response message carrying the TAC to the terminal, where the terminal adjusts the advancement of the secondary cell corresponding to the secondary base station according to the TAC. Time TA.
- FIG. 24 is a schematic structural diagram 6 of an apparatus for adding a secondary cell according to the present invention.
- the secondary base station includes an eighteenth unit 331A, a nineteenth unit 332A, and a twentyth unit 333A; wherein, the eighteenth The unit 331A is configured to send a secondary cell addition response message to the primary base station, where the secondary cell addition response message includes a random access pilot code sequence number and a physical random access channel mask sequence number; and the nineteenth unit 332A is configured to receive by the terminal.
- the twentieth unit 333A is configured to obtain a time advance command TAC according to the random access request message, And transmitting, to the terminal, a random access response message carrying the TAC, where the terminal adjusts an advance time TA of the secondary cell corresponding to the secondary base station according to the TAC.
- the secondary cell addition response message sent by the eighteenth unit 331A further includes a random access response window size of the secondary cell for the terminal to determine to receive the random access response message.
- FIG. 25 is a schematic structural diagram of a device for adding a secondary cell according to the present invention.
- the terminal device includes: a sixth receiving unit 211B and a fifth sending unit 212B.
- the sixth receiving unit 21 1B is configured to receive a notification message that is sent by the primary base station, where the notification message includes a random access pilot code sequence number and a physical random access channel mask sequence number; and the fifth sending unit 212B is configured to The sending resource determined by the physical random access channel mask sequence number sends a random access request message to the secondary base station, where the random access request message includes according to the random access pilot The random access pilot code determined by the code sequence number; the seventh receiving unit 213B is configured to receive the random access response message sent by the secondary base station, where the random access response message includes the secondary base station according to the random access request The time advance command TAC determined by the message is used by the second processing unit 214B to adjust the advance time TA of the secondary cell corresponding to the secondary base station according to the TAC.
- the notification message is a reconfiguration message or a random access resource allocation message
- the terminal when the notification message is a random access resource allocation message, the terminal further receives a reconfiguration message sent by the primary base station;
- the reconfiguration message further includes a random access response window size of the secondary cell for the terminal to determine to receive the random access response message.
- the terminal device before receiving the notification message sent by the primary base station, the terminal further receives the temporary identifier of the cell radio network sent by the primary base station, and after receiving the notification message sent by the primary base station, the terminal applies the radio network of the cell
- the temporary identifier is descrambled, and the random access pilot code sequence number and the physical random access channel mask sequence number are obtained.
- FIG. 26 is a schematic structural diagram of an apparatus for adding a secondary cell according to the present invention.
- the secondary base station device includes: an eighth receiving unit 221B, a ninth receiving unit 222B, and a sixth transmitting unit 223B.
- the eighth receiving unit 221B is configured to receive a secondary cell add request message sent by the primary base station, where the secondary cell add request message includes a random access pilot code sequence number and a physical random access channel mask sequence number; and the ninth receiving unit 222B Receiving, according to the secondary cell addition request message, a random access request message that is sent by the terminal and carrying a random access pilot code obtained according to the random access pilot code sequence; the sixth sending unit 223B is configured to use The random access request message obtains a time advance command TAC, and sends a random access response message carrying the TAC to the terminal, where the terminal adjusts the self corresponding to the secondary base station according to the TAC. Advance time TA on the cell.
- FIG. 27 is a schematic structural diagram 6 of an apparatus for adding a secondary cell according to the present invention.
- the secondary base station device includes a seventh sending unit 231B, a tenth receiving unit 232B, and an eighth sending unit 233B.
- the seventh sending unit 231B is configured to send a secondary cell add response message to the primary base station, where the secondary cell add response message includes a random access pilot code sequence number and a physical random access channel mask sequence number; a random access request message that is sent by the receiving terminal and carries a random access pilot code obtained according to the random access pilot code sequence; the eighth sending unit 233B is configured to obtain according to the random access request message.
- the secondary cell addition response message further includes a random access response window size of the secondary cell for the terminal to determine to receive the random access response message.
- the network system includes a terminal 21A, a secondary base station 23A, and a primary base station 22A; wherein the terminal 21A receives a notification message sent by the primary base station 22A, and the notification The message is a reconfiguration message or a message is allocated with the access resource, and then sends a random access request message to the secondary base station 23A according to the received notification message, and then adjusts the advance time of the corresponding cell according to the received random access response message.
- the secondary base station 23A receives the secondary cell addition request message sent by the primary base station 22A or sends a secondary cell addition response message to the primary base station 22A, and the secondary base station 23A sends a random access response message to the terminal 21A according to the random access request message sent by the terminal 21A.
- the primary base station 22A transmits a secondary cell addition request message to the secondary base station 23A or a secondary cell addition response message transmitted by the secondary base station 23A, and the secondary base station 23A transmits a reconfiguration message or a reconfiguration message and a random access resource allocation message to the terminal 21A.
- FIG. 29 is a schematic structural diagram 4 of an embodiment of a network system according to the present invention; as shown in FIG. 29, the system includes: a terminal device 21B, a primary base station device 22B, and a secondary base station device 23B.
- the device is used to implement the technical solution of the device embodiment shown in FIG. 28, and the principle and technical effect are similar, and details are not described herein again.
- FIG. 30 is a schematic flowchart diagram of a method for adding a secondary cell according to the present invention. As shown in FIG. 30, the method is a schematic flowchart of a method, including the following steps:
- Step 3101 The terminal receives a random access resource allocation message sent by the secondary base station, where the random access resource allocation message includes a random access pilot code sequence number and a physical random access channel mask sequence. Specifically, the terminal receives the secondary base station and sends the message. Random access pilot code sequence number and physical random access channel mask sequence number.
- Step 3102 The terminal sends a random access request message to the secondary base station by using the sending resource determined according to the physical random access channel mask sequence number, where the random access request message includes the random access pilot code sequence number. Determine the random access pilot code.
- the terminal determines, according to the PRACH mask sequence number, the random access sent to the secondary base station. For the resource of the message, the terminal further determines a random access pilot code to be sent to the secondary base station according to the received random access pilot code sequence number.
- Step 3103 The terminal receives a random access response message sent by the secondary base station, where the random access response message includes a time advance command TAC determined by the secondary base station according to the random access request message.
- the terminal receives the time advance command TAC sent by the secondary base station, and the time advance command TAC is determined by the secondary base station according to the received random access request message.
- Step 3104 The terminal adjusts an advance time TA of the secondary cell corresponding to the secondary base station according to the TAC.
- the terminal adjusts its own advance time TA on the corresponding cell according to the time advance command TAC sent by the secondary base station.
- the terminal further receives the temporary identifier of the cell radio network of the terminal sent by the primary base station, and the terminal applies the random access resource allocation received by the temporary identifier of the wireless network of the cell
- the message is descrambled, that is, the cell wireless network temporary identifier is allocated to the terminal by the primary base station in advance.
- the method further includes the terminal receiving a reconfiguration message sent by the primary base station, where the reconfiguration message includes, for the terminal, determining to receive the random access The random access response window size of the secondary cell used for the response message.
- the reconfiguration message includes the response window size and an activation time, and the terminal determines, according to the activation time, a moment of receiving the random access resource allocation message.
- the terminal receives the random access response window size and the activation time sent by the primary base station, where the random access response window size is a time window in which the terminal receives the random access response message, that is, determines when the terminal starts to receive random access.
- the time period from when the message stops receiving the random access response message; the activation time is the time at which the terminal receives the random access resource allocation message.
- FIG. 31 is a schematic flowchart of a method for adding a secondary cell according to an embodiment of the present invention. As shown in FIG. 31, the method is a schematic flowchart of a method for a secondary base station, and includes the following steps:
- Step 4301 After receiving the secondary cell addition request message sent by the primary base station, the secondary base station sends a random access resource allocation message to the terminal.
- the secondary cell addition request message includes a temporary identifier of the cell wireless network of the terminal, where the random access
- the resource allocation message includes a random access pilot code sequence number and a physical random access channel mask sequence number.
- the secondary base station After the secondary base station receives the temporary identifier of the cell radio network of the terminal sent by the primary base station, the secondary base station sends a random access pilot code sequence number and a physical random access channel mask sequence number to the terminal, and the secondary base station uses the cell wireless network temporary The identifier scrambles the random access pilot code sequence number and the physical random access channel mask sequence number.
- Step 4302 The secondary base station receives a random access request message that is sent by the terminal and carries a random access pilot code obtained according to the random access pilot code sequence number.
- the secondary base station receives the random access pilot code sent by the terminal to the secondary base station.
- Step 4303 The secondary base station obtains a time advance command TAC according to the random access request message, and sends a random access response message carrying the TAC to the terminal, where the terminal adjusts itself according to the TAC.
- the secondary base station determines, according to the received random access request message, a time advance command TAC sent to the terminal, so that the terminal adjusts its own advance time TA in the corresponding cell according to the TAC.
- the secondary base station in the method for adding a secondary cell further includes: an activation time, where the secondary base station determines, according to the activation time, a time for sending the random access resource allocation message .
- the secondary base station adds a secondary cell to the primary base station, and the secondary base station further includes an activation time, that is, the secondary base station receives an activation time, in addition to receiving the temporary wireless network temporary identifier of the terminal sent by the primary base station, where the activation time is used for auxiliary time.
- the base station determines the time at which the random access resource allocation message is sent.
- FIG 32 is a schematic diagram of signaling of Embodiment 6 of the network system of the present invention; as shown in Figure 32, the signaling is transmitted in five steps.
- Step 1 The primary base station sends a secondary cell addition request message to the secondary base station, where the secondary area addition request message includes the cell wireless network temporary identifier of the terminal, and the secondary base station applies the cell wireless network temporary identifier to scramble the random access resource allocation message.
- the secondary cell addition request message further includes an activation time, and the secondary base station determines, according to the activation time, a time for sending the random access resource allocation message;
- Step 2 The primary base station sends a reconfiguration message to the terminal, where the reconfiguration message includes a response window size and an activation time, and the terminal determines a time window for receiving the random access response message according to the response window size to receive the random access response message, and the terminal receives the message according to the receiving
- the activation time determines the time at which the random resource allocation message is received to receive the random resource allocation message;
- the secondary base station sends the following to the terminal The device accesses the resource allocation message, where the random access resource allocation message includes the random access pilot code sequence number determined by the secondary base station, and the PRACH mask sequence number.
- Step 4 The terminal sends the random access resource allocation message to the secondary base station according to the received random access resource allocation message.
- An access request message where the random access request message includes a random access pilot code
- Step 5 The secondary base station sends a random access response message to the terminal according to the received random access request message, where the random access response message includes time advance Commanding the TAC, for the terminal to adjust the advance time TA of the corresponding cell according to the TAC; wherein the step 2 is optional, when the step 2 does not exist, the terminal determines to receive the random access resource allocation message according to the customized activation time.
- the terminal receives the temporary identifier of the cell radio network of the terminal sent by the primary base station, Terminal application for the cell radio network temporary identity of the random access resource allocation message for descrambling.
- the primary base station sends a secondary cell addition request message to the secondary base station, so that the terminal can receive the random access resource allocation message received by the terminal in the subsequent step.
- the correct descrambling is performed, and the random access request message is correctly sent to the secondary base station according to the random access resource allocation message, and the secondary base station re-occupies the random access request message to ensure that the content and time of the correct random access response message are sent to the terminal.
- the primary cell and the secondary cell belong to different base stations, or the connection delay between the primary cell and the secondary cell is relatively large, and the capacity can still work normally when the capacity is relatively small.
- FIG. 33 is a schematic flowchart of a method for adding a secondary cell according to an embodiment of the present invention.
- FIG. 33 is a schematic flowchart of a method for a secondary base station, and includes the following steps:
- Step 5301 After the secondary base station sends a secondary cell addition response message to the primary base station, the secondary base station sends a random access resource allocation message to the terminal.
- the secondary cell addition response message includes a cell wireless network temporary identifier of the terminal, and the random access resource.
- the assignment message includes a random access pilot code sequence number and a physical random access channel mask sequence number.
- the secondary base station sends the temporary radio network temporary identifier of the terminal to the primary base station
- the secondary base station sends a random access pilot code sequence number and a physical random access channel mask sequence number to the terminal.
- Step 5302 The secondary base station receives a random access request message that is sent by the terminal and carries a random access pilot code obtained according to the random access pilot code sequence number.
- the secondary base station receives a random access request message sent by the terminal to the secondary base station.
- Step 5303 The secondary base station obtains a time advance command TAC according to the random access request message, and sends a random access response message carrying the TAC to the terminal, where the terminal adjusts itself according to the TAC.
- the secondary base station determines, according to the received random access request message, a time advance command TAC sent to the terminal, so that the terminal adjusts its own advance time TA in the corresponding cell according to the TAC.
- the secondary base station in the method for adding a secondary cell further includes: an activation time, where the secondary base station determines to send the random access resource allocation message according to the activation time. time.
- the secondary cell addition response message sent by the secondary base station to the primary base station further includes an activation time, that is, the secondary base station sends an activation time to the primary base station, in addition to transmitting the temporary wireless network temporary identifier of the terminal to the primary base station, where the activation time is Forwarded to the terminal by the primary base station, the activation time is used by the terminal to determine the time at which the random access resource allocation message is received.
- an activation time that is, the secondary base station sends an activation time to the primary base station, in addition to transmitting the temporary wireless network temporary identifier of the terminal to the primary base station, where the activation time is Forwarded to the terminal by the primary base station, the activation time is used by the terminal to determine the time at which the random access resource allocation message is received.
- FIG 34 is a schematic diagram of signaling of Embodiment 7 of the network system of the present invention. As shown in Figure 34, the transmission of the signaling is divided into five steps.
- Step 1 The secondary base station sends a secondary cell addition response message to the primary base station, where the secondary cell addition response message includes the cell wireless network temporary identifier of the terminal, and the secondary base station applies the cell wireless network temporary identifier to scramble the random access resource allocation message. Sending the scrambled random access resource allocation message to the terminal; optionally, the secondary cell addition response message further includes an activation time; Step 2, 3, 4, 5 and Step 2 of the signaling diagram of Embodiment 6 3, 4, and 5 are the same, and are not described here again.
- the terminal After the secondary base station sends a secondary cell addition response message to the primary base station, before receiving the random access resource allocation message, the terminal further receives the terminal sent by the primary base station.
- the cell radio network temporary identifier the terminal applying the cell radio network temporary identifier to descramble the received random access resource allocation message.
- the cell radio network temporary identifier of the terminal is determined by the secondary base station, and then sent to the primary base station, and then sent by the primary base station to the terminal.
- the secondary base station sends a secondary cell addition response message to the primary base station, so that the terminal can receive the random access resource allocation message received by the terminal in the subsequent step.
- the correct descrambling is performed, and the random access request message is correctly sent to the secondary base station according to the random access resource allocation message, and the secondary base station re-occupies the random access request message to ensure that the content and time of the correct random access response message are sent to the terminal.
- the primary cell and the secondary cell belong to different base stations, or the connection between the primary cell and the secondary cell The delay is relatively large, and the capacity can still work normally when the capacity is small.
- the terminal includes a twenty-first unit 311A, a twenty-second unit 312A, a twenty-third unit 313A, and a twentieth a fourth unit 314A, where the second eleven unit 31 1A is configured to receive a random access resource allocation message sent by the secondary base station, where the random access resource allocation message includes a random access pilot code sequence number and a physical random access channel mask.
- the second serial unit 312A is configured to send a random access request message to the secondary base station by using the sending resource determined according to the physical random access channel mask sequence number, where the random access request message is included according to the random access a random access pilot code determined by the pilot code sequence number;
- the twenty-third unit 313A is configured to receive the random access response message sent by the secondary base station, where the random access response message includes the secondary base station according to the a time advance command TAC determined by the random access request message;
- the twenty-fourth unit 314A is configured to adjust, according to the TAC, the secondary cell corresponding to the secondary base station Before the time TA.
- the terminal in the device for adding the secondary cell is further configured to receive a reconfiguration message sent by the primary base station, where the reconfiguration message includes, for the terminal, determining the receiving station.
- the random access response window size of the secondary cell used by the random access response message, or the reconfiguration message includes a response window size and an activation time, and the terminal determines to receive the random access according to the activation time. The moment when the resource is assigned a message.
- the second eleven unit 311A before receiving the random access resource allocation message, the second eleven unit 311A further receives a cell radio network temporary identifier of the terminal sent by the primary base station, and the terminal applies the cell radio network temporary identifier to the received Random access resource allocation message descrambling.
- the secondary base station includes a twenty-fifth unit 431A, a twenty-sixth unit 432A, and a twenty-seventh unit 433A;
- the fifteenth unit 431A is configured to: after receiving the secondary cell addition request message sent by the primary base station, send a random access resource allocation message to the terminal; the secondary cell add request message includes a temporary radio network temporary identifier of the terminal, where the random connection
- the inbound resource allocation message includes a random access pilot code sequence number and a physical random access channel mask sequence number; the twenty-sixth unit 432A is configured to be sent by the receiving terminal and carried according to the random access pilot code sequence number.
- the twenty-seventh unit 433A is configured to obtain a time advance command TAC according to the random access request message, and send the random access carrying the TAC to the terminal a response message, wherein the terminal adjusts, according to the TAC, a corresponding one of the secondary base stations Advance time TA on the secondary cell.
- the secondary cell addition request message received by the twenty-fifth unit 431 A further includes: an activation time, and the secondary base station determines, according to the activation time, a time at which the random access resource allocation message is sent.
- the secondary base station includes a twenty-eighth unit 531A, a twenty-ninth unit 532A, and a thirty-th unit 533A;
- the eNB unit 531A is configured to send a secondary cell add response message to the primary base station, send a random access resource allocation message to the terminal;
- the secondary cell add response message includes a temporary wireless network temporary identifier of the terminal, and the random access
- the resource allocation message includes a random access pilot code sequence number and a physical random access channel mask sequence number, and a cell radio network temporary identifier of the terminal.
- the twenty-ninth unit 532A is configured to be sent by the receiving terminal and carried according to the random access. a random access request message of the random access pilot code obtained by using the pilot code sequence number; the thirtieth unit 533A is configured to obtain a time advance command TAC according to the random access request message, and send the bearer to the terminal a random access response message of the TAC, where the terminal adjusts the advance time of the self on the secondary cell corresponding to the secondary base station according to the TAC TA.
- the secondary cell addition response message sent by the twenty-eighth unit 531 A further includes: an activation time, and the secondary base station determines, according to the activation time, a time at which the random access resource allocation message is sent.
- FIG. 38 is a schematic structural diagram of a device for adding a secondary cell according to the present invention.
- the terminal device includes: an eleventh receiving unit 31 1B and a ninth sending unit. 312B, the twelfth receiving unit 313B, and the third processing element 314B.
- the eleventh receiving unit 311B is configured to receive a random access resource allocation message sent by the secondary base station, where the random access resource allocation message includes a random access pilot code sequence number and a physical random access channel mask sequence number;
- the sending unit 312B is configured to send a random access request message to the secondary base station by using the sending resource determined according to the physical random access channel mask sequence number, where the random access request message includes determining according to the random access pilot code sequence number.
- the twelfth receiving unit 313B is configured to receive a random access response message sent by the secondary base station, where the random access response message includes the secondary base station determining according to the random access request message
- the third processing unit 314B is configured to adjust the advance time TA of the secondary cell corresponding to the secondary base station according to the TAC.
- the eleventh receiving unit 311B of the terminal device is configured to receive a reconfiguration message sent by the primary base station, where the reconfiguration message includes, by the terminal, determining, by using the terminal, that the random access response message is received. a random access response window size of the secondary cell, or the reconfiguration message includes the response window size and an activation time, and the terminal determines, according to the activation time, a time at which the random access resource allocation message is received.
- the eleventh receiving unit 31 1B of the terminal device is further configured to: before receiving the random access resource allocation message, receive a cell radio network temporary identifier of the terminal sent by the primary base station, where the terminal applies the The cell radio network temporary identifier descrambles the received random access resource allocation message.
- FIG. 39 is a schematic structural diagram of an embodiment of a device for adding a secondary cell according to the present invention.
- the secondary base station device includes: a thirteenth receiving unit 321B, a tenth transmitting unit 321b, and a fourteenth receiving unit 322B, Eleven transmitting unit 323B.
- the eleventh receiving unit 321B is configured to receive the secondary cell add request message sent by the primary base station
- the tenth sending unit 321b is configured to send the random access resource allocation to the terminal after receiving the secondary cell add request message sent by the primary base station.
- the secondary cell addition request message includes a cell radio network temporary identifier of the terminal, where the random access resource allocation message includes a random access pilot code sequence number and a physical random access channel mask sequence number; and the fourteenth receiving unit 322B a random access request message that is sent by the receiving terminal and carries a random access pilot code obtained according to the random access pilot code sequence; the eleventh sending unit 323B is configured to use the random access request according to the random access request message.
- the secondary base station device, the secondary cell addition request message further includes: an activation time, where the secondary base station determines, according to the activation time, a time when the random access resource allocation message is sent.
- FIG. 40 is a schematic structural diagram of a device for adding a secondary cell according to the present invention.
- the secondary base station device includes: a twelfth transmitting unit 331B, a fifteenth receiving unit 332B, and a thirteenth transmitting unit 333B.
- the twelfth sending unit 331B is configured to send a random access resource allocation message to the terminal after sending the secondary cell adding response message to the primary base station, where the secondary cell adding response message includes a temporary identifier of the cell wireless network of the terminal,
- the random access resource allocation message includes a random access pilot code sequence number and a physical random access channel mask sequence number;
- the unit 332B is configured to receive a random access request message that is sent by the terminal and that carries the random access pilot code obtained according to the random access pilot code sequence.
- the thirteenth sending unit 333B is configured to perform the random access according to the random access
- the incoming request message obtains the time advance command TAC, and sends a random access response message carrying the TAC to the terminal, where the terminal adjusts the advancement of the secondary cell corresponding to the secondary base station according to the TAC.
- Time TA is the time advance command
- the secondary cell addition response message further includes: an activation time, and the secondary base station determines, according to the activation time, a moment when the random access resource allocation message is sent.
- FIG. 41 is a schematic structural diagram 5 of an embodiment of a network system according to the present invention.
- the network system includes a terminal 31A, a secondary base station 33A, and a primary base station 32A.
- the terminal 31A receives the reconfiguration message sent by the primary base station 32A, and the terminal 31A receives the random access resource allocation message sent by the secondary base station 33A, and receives the terminal sent by the primary base station before receiving the random access resource allocation message.
- the terminal 31A sends a random access request message to the secondary base station 33A according to the received random access resource allocation message; the terminal 31A adjusts the advance time TA of the corresponding cell according to the received random access response message; 33A transmits a secondary cell addition response message to the primary base station 32A or receives a secondary cell addition request message sent by the primary base station 32A; the secondary base station 33A transmits a random access resource allocation message to the terminal 31A, and the secondary base station 33A receives the random access request sent by the terminal 31A.
- the primary base station 32A receives the secondary cell addition response message sent by the secondary base station 33A. Or sending the secondary cell to the secondary base station 33A.
- the request message is added, and the primary base station sends the terminal radio network temporary identifier to the terminal before the terminal receives the random access resource allocation message, and the primary base station 32A sends a reconfiguration message to the terminal 31A.
- the network system includes a terminal device 31B, a secondary base station device 33B, and a primary base station device 32B.
- the device is used to perform the technical solution corresponding to the device embodiment shown in FIG. 41, and the principle and technical effects are similar, and details are not described herein again.
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Abstract
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Priority Applications (10)
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PCT/CN2012/079421 WO2014019135A1 (zh) | 2012-07-31 | 2012-07-31 | 添加辅小区的方法、装置、设备和网络*** |
EP12882260.8A EP2882238B1 (en) | 2012-07-31 | 2012-07-31 | Method, apparatus, device, and network system for adding secondary cell |
CN201280012044.5A CN103828448B (zh) | 2012-07-31 | 2012-07-31 | 添加辅小区的方法、装置、设备和网络*** |
ES17201451T ES2783884T3 (es) | 2012-07-31 | 2012-07-31 | Método, aparato, dispositivo y sistema de red para agregar una célula de servicio secundaria |
KR1020157005251A KR101628642B1 (ko) | 2012-07-31 | 2012-07-31 | 보조 셀을 추가하는 방법, 장치, 디바이스, 및 네트워크 시스템 |
JP2015524583A JP6247293B2 (ja) | 2012-07-31 | 2012-07-31 | 2次セルを追加するための方法、装置、デバイスおよびネットワークシステム |
EP17201451.6A EP3346775B1 (en) | 2012-07-31 | 2012-07-31 | Method, apparatus, device and network system for adding secondary serving cell |
US14/611,428 US9924538B2 (en) | 2012-07-31 | 2015-02-02 | Method, apparatus, device and network system for adding secondary serving cell |
US15/898,523 US10285199B2 (en) | 2012-07-31 | 2018-02-17 | Method, apparatus, device and network system for adding secondary serving cell |
US16/373,197 US10834753B2 (en) | 2012-07-31 | 2019-04-02 | Method, apparatus, device and network system for adding secondary serving cell |
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US14/611,428 Continuation US9924538B2 (en) | 2012-07-31 | 2015-02-02 | Method, apparatus, device and network system for adding secondary serving cell |
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CN (1) | CN103828448B (zh) |
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US20180176950A1 (en) | 2018-06-21 |
CN103828448A (zh) | 2014-05-28 |
US20150146665A1 (en) | 2015-05-28 |
US9924538B2 (en) | 2018-03-20 |
US10834753B2 (en) | 2020-11-10 |
EP2882238B1 (en) | 2017-12-27 |
JP2015523822A (ja) | 2015-08-13 |
EP3346775A1 (en) | 2018-07-11 |
US10285199B2 (en) | 2019-05-07 |
CN103828448B (zh) | 2018-06-26 |
KR20150038492A (ko) | 2015-04-08 |
JP6247293B2 (ja) | 2017-12-13 |
ES2783884T3 (es) | 2020-09-18 |
EP2882238A1 (en) | 2015-06-10 |
EP2882238A4 (en) | 2016-02-24 |
EP3346775B1 (en) | 2020-02-05 |
KR101628642B1 (ko) | 2016-06-08 |
US20190230702A1 (en) | 2019-07-25 |
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