WO2015035608A1 - 载波转换方法、装置和系统 - Google Patents

载波转换方法、装置和系统 Download PDF

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Publication number
WO2015035608A1
WO2015035608A1 PCT/CN2013/083473 CN2013083473W WO2015035608A1 WO 2015035608 A1 WO2015035608 A1 WO 2015035608A1 CN 2013083473 W CN2013083473 W CN 2013083473W WO 2015035608 A1 WO2015035608 A1 WO 2015035608A1
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WO
WIPO (PCT)
Prior art keywords
carrier
base station
user equipment
cell
hybrid
Prior art date
Application number
PCT/CN2013/083473
Other languages
English (en)
French (fr)
Inventor
张磊
王轶
周华
Original Assignee
富士通株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 富士通株式会社 filed Critical 富士通株式会社
Priority to CN201380079466.9A priority Critical patent/CN105519186A/zh
Priority to PCT/CN2013/083473 priority patent/WO2015035608A1/zh
Priority to EP13893438.5A priority patent/EP3046367A4/en
Priority to KR1020167009118A priority patent/KR101782393B1/ko
Priority to JP2016541757A priority patent/JP2016534661A/ja
Publication of WO2015035608A1 publication Critical patent/WO2015035608A1/zh
Priority to US15/068,780 priority patent/US20160198371A1/en

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/06Reselecting a communication resource in the serving access point
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/0005Control or signalling for completing the hand-off
    • H04W36/0055Transmission or use of information for re-establishing the radio link
    • H04W36/0066Transmission or use of information for re-establishing the radio link of control information between different types of networks in order to establish a new radio link in the target network
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04JMULTIPLEX COMMUNICATION
    • H04J3/00Time-division multiplex systems
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/0005Control or signalling for completing the hand-off
    • H04W36/0055Transmission or use of information for re-establishing the radio link
    • H04W36/0072Transmission or use of information for re-establishing the radio link of resource information of target access point
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/12Wireless traffic scheduling
    • H04W72/1263Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/20Control channels or signalling for resource management
    • H04W72/23Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W88/00Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02Terminal devices
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W88/00Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08Access point devices
    • H04W88/10Access point devices adapted for operation in multiple networks, e.g. multi-mode access points

Definitions

  • the present invention relates to the field of communications, and in particular, to a carrier conversion (transform or switch) method, apparatus, and system. Background technique
  • one solution is to increase the reuse rate of physical resources by using Small cells.
  • replacing a macro cell with multiple small cells can save power overhead even if the coverage area is the same.
  • Small cell is a more energy-efficient green technology.
  • Small Cell is more flexible and can be flexibly opened and closed according to the amount of users and the amount of business data.
  • NCT Long Term Evolution
  • BCT backing compatibility carrier type
  • NCT can effectively reduce inter-cell interference caused by unnecessary cell-specific signals. Therefore, NCT is more suitable for dense deployment scenarios. For example, densely-packed small cells adopt NCT to effectively improve the SIN (Signal to) of users receiving signals. Interference plus Noise Ratio, which further increases cell capacity.
  • UE User Equipment
  • terminal equipment or terminals users
  • An object of the embodiments of the present invention is to provide a carrier conversion method, apparatus, and system, so as to better play
  • the advantages of BCT and NCT enable a smooth transition of carrier service users.
  • a carrier conversion method includes: a base station transmitting a carrier conversion indication message to a UE of a local cell, and indicating, by the carrier conversion indication message, the local cell of the UE Carrier type is about to change;
  • the base station converts the carrier type, modifies the content and/or transmission mode of the corresponding system information, and the sequence and/or transmission mode of the common signal.
  • a carrier conversion method includes: after receiving a carrier switching indication message sent by a base station, the user equipment carries according to a pre-agreed or the carrier switching indication message. Time indication information determines a carrier conversion time point;
  • the user equipment performs carrier conversion at a determined carrier switching time point.
  • a carrier conversion method includes: a base station switching all UEs of the current cell to a carrier that can provide services for the UE;
  • the base station converts the carrier type, modifies the content and/or transmission mode of the corresponding system information, and the sequence and/or transmission mode of the common signal.
  • a carrier conversion method includes: stopping, by a base station, a user equipment on a part of a subframe of a current carrier;
  • the base station switches a user equipment that can be switched to the converted carrier in the current cell to the converted carrier wave;
  • the base station converts a carrier type of the subframe of the current carrier other than the part of the subframe to the converted carrier.
  • a carrier conversion method includes: the base station transmitting a handover command and handover assistance information to a user equipment, so that the user equipment is current according to the handover assistance information.
  • the carrier type is converted to the carrier type specified by the base station.
  • a carrier conversion method includes: receiving, by a user equipment, a handover command and handover assistance information sent by a base station;
  • a base station includes: a sending unit, which sends a carrier switching indication message to a UE of the local cell, where the UE is instructed by the carrier switching indication message
  • the carrier type of the cell is about to change
  • a processing unit that converts the carrier type, modifies the content and/or transmission mode of the corresponding system information, and the sequence and/or transmission mode of the common signal.
  • a user equipment includes: a determining unit, after receiving a carrier switching indication message sent by a base station, according to a pre-agreed or the carrier switching indication The time indication information carried by the message determines a carrier conversion time point;
  • a switching unit that performs carrier conversion at a carrier conversion time point determined by the determining unit.
  • a base station includes: a handover unit that switches all UEs of the current cell to a carrier that can provide services for the UE; and a processing unit that converts Carrier type, modifying the content and/or transmission mode of the corresponding system information and the sequence and/or transmission mode of the common signal.
  • a base station includes: a first scheduling unit, which stops scheduling a user equipment on a part of a subframe of a current carrier;
  • a first processing unit that converts a carrier type of the part of the subframe, modifies a content and/or a transmission manner of the corresponding system information, and a sequence and/or a transmission manner of the common signal;
  • a first switching unit which switches a user equipment that can be switched to the converted carrier in the current cell to the converted carrier
  • a second processing unit configured to convert a carrier type of the other carrier of the current carrier except the part of the subframe to the converted carrier.
  • a base station includes: a sending unit that sends a handover command and handover assistance information to a user equipment, so that the user equipment according to the handover assistance information Converting the current carrier type to the carrier type specified by the base station.
  • a user equipment is provided, where the user equipment includes:
  • a receiving unit which receives a handover command and handover assistance information sent by the base station
  • a converting unit that converts the current carrier type into a carrier type specified by the base station according to the handover assistance information.
  • a communication system includes the base station according to the seventh aspect, and the UE according to the eighth aspect, or the base station and the UE according to the ninth aspect, or The base station and the UE according to the tenth aspect, or the base station according to the eleventh aspect and the UE according to the twelfth aspect.
  • a computer readable program wherein when the program is executed in a base station, the program causes the computer to execute the first aspect, the third aspect, the fourth aspect, in the base station, The carrier conversion method according to any of the fifth aspect, the sixth aspect.
  • a storage medium storing a computer readable program, wherein the computer readable program causes a computer to perform the first aspect, the third aspect, the fourth aspect, and the fifth aspect in a base station
  • the carrier conversion method according to any of the sixth aspects.
  • a computer readable program wherein when the program is executed in a terminal device, the program causes the computer to perform the second aspect or the seventh aspect described in the terminal device Carrier conversion method.
  • a storage medium storing a computer readable program, wherein the computer readable program causes the computer to perform the carrier conversion method of the second aspect or the seventh aspect in the terminal device.
  • the beneficial effects of the embodiments of the present invention are as follows:
  • the carrier conversion method, apparatus, and system according to the embodiments of the present invention can better utilize the advantages of BCT and NCT, and achieve a smooth transition of carrier service users.
  • FIG. 1 is a flowchart of a carrier conversion method according to Embodiment 1 of the present invention.
  • FIG. 2 is a flowchart of processing on the UE side corresponding to the method of FIG. 1;
  • FIG. 3 is a flowchart of a carrier conversion method according to Embodiment 3 of the present invention.
  • FIG. 4 is a flow chart showing the processing of a transition carrier corresponding to the method of FIG. 3;
  • FIG. 5 is a flowchart of processing on the UE side corresponding to the method of Figure 4;
  • FIG. 6 is a flowchart of a carrier conversion method according to Embodiment 6 of the present invention.
  • FIG. 7 is a flowchart of a carrier conversion method according to Embodiment 7 of the present invention.
  • FIG. 8 is a flowchart of processing on the UE side corresponding to the method of FIG. 7;
  • FIG. 9 is a schematic diagram showing the composition of a base station corresponding to the method of FIG. 1;
  • FIG. 10 is a schematic diagram showing the composition of a UE corresponding to the method of FIG. 2;
  • FIG. 11 is a schematic diagram showing the composition of a base station corresponding to the method of FIG. 3;
  • FIG. 12 is a schematic diagram showing the composition of a base station corresponding to the method of FIG. 4;
  • FIG. 13 is a schematic diagram showing the composition of a UE corresponding to the method of FIG. 5;
  • Figure 14 is a schematic diagram showing the composition of a base station corresponding to the method of Figure 6;
  • Figure 15 is a schematic diagram showing the composition of a base station corresponding to the method of Figure 7;
  • Figure 16 is a diagram showing the composition of a UE corresponding to the method of Figure 8. detailed description
  • the inventors have found that if the flexible deployment of the Small cell is combined with the BCT and NCT carriers, better results will be obtained. For example, many small cells are densely deployed in a certain business district. In the morning (off-peak period), there are very few users in the area, and only a few small cells are active to provide services to users. At this time, since the number of small cells in the active state is small, the interference level of the small interval is low. In order Serving more users, including new versions of users and traditional users, small cell uses BCT carrier. As the time changes, the number of users in the area increases. As the number of activated small cells increases, the inter-cell interference level increases.
  • the small cell When the interference level rises to a certain level, the small cell can be converted from the BCT carrier. Service users to NCT carriers to reduce inter-cell interference levels. Users gradually increase, and finally all small cells can be converted to NCT carriers. As time goes by, the number of users gradually decreases after reaching the peak, and there are fewer and fewer small cells in the active state, and inter-cell interference in this area is also less and less.
  • the activated small cell can convert the carrier into a BCT carrier to serve more users.
  • the first type which supports BCT, does not support NCT, and does not support RRM (adio Resource Management) measurement with sub-frame pattern, such as LTE version 8 and version 9.
  • the second category which supports BCT and does not support NCT, can support users who perform RRM measurements in subframe patterns, such as LTE version 10 and version 11.
  • the third category which supports BCT and also supports NCT, can support users who perform RRM measurements in sub-frame patterns.
  • the fourth category which does not support BCT, only supports NCT, and can support users who perform RRM measurements in a sub-frame pattern.
  • the first category the backward compatible carrier (BCT).
  • the second category the new carrier (NCT)
  • the third type the first type of hybrid carrier, a part of the subframe carries the BCT carrier, and another part of the subframe carries the NCT carrier, and the working bands of the BCT carrier and the NCT carrier carried by the same overlap each other, the BCT carrier and the NCT carrier
  • Cell_ID The cell ID
  • a subframe carrying a BCT carrier (abbreviated as a BCT subframe) includes broadcast information suitable for the BCT and a common signal, such as a common reference signal, and a subframe carrying the NCT carrier (referred to as an NCT subframe). Contains broadcast information and public signals for NCT.
  • the first type of hybrid carrier that is, the aforementioned third type of carrier
  • the NCT subframes carry different auxiliary signals (e.g., PSS/SSS and cell-specific pilot signals) so that the user equipment can search for them based on the respective auxiliary signals of the BCT subframe and the NCT subframe.
  • auxiliary signals e.g., PSS/SSS and cell-specific pilot signals
  • the broadcast information on the BCT subframe may indicate the hybrid carrier, and the BCT and the NCT have the same cell identifier and the specific value of the cell identifier, and the subframe that can further carry the BCT operation.
  • the pattern for example, is indicated in the form of a Bitmap.
  • the information carried on the BCT subframe is placed at a location that is not read by a legacy user (such as the first type of user and the second type of user described above), that is, the information can only serve the capable location.
  • a legacy user such as the first type of user and the second type of user described above
  • the broadcast information on the NCT subframe may indicate that this is a hybrid carrier, and the BCT and the NCT have the same cell identifier and the specific value of the cell identifier, and the subframe pattern that can further carry the NCT operation. , for example, in the form of a bitmap (Bitmap). Similarly, the placement of such information on the NCT sub-frames does not prevent the fourth type of user from working on this NCT.
  • the BCT subframe and the NCT subframe are also provided to carry different auxiliary signals (for example, PSS/SSS and cell-specific pilot signals) to enable the user equipment. They can be searched for based on the respective auxiliary signals of the BCT subframe and the NCT subframe.
  • auxiliary signals for example, PSS/SSS and cell-specific pilot signals
  • the broadcast information on the BCT subframe may indicate that the BCT carrier is a non-full subframe operation, the cell identifier of the BCT carrier, and the subframe pattern that can further carry the BCT operation, for example, Indicate in the form of a Bitmap.
  • the information carried on the BCT subframe is also placed in a location that Legacy users (such as the first type of users and the second type of users described above) will not read, that is, the information can only serve the ability to identify the The carrier is a user of the hybrid carrier, and this information does not affect the use of the Legacy user on the BCT carrier.
  • the broadcast information on the NCT subframe may indicate that the NCT carrier is a non-full subframe operation, the cell identifier of the NCT carrier, and the subframe pattern that can further carry the NCT operation, for example, using Bitmap. The form is indicated. Similarly, the placement of such information on the NCT subframe does not prevent the fourth type of user from working on this NCT.
  • the hybrid carrier includes two types of carriers as an example, but the embodiment is not limited thereto. The method in this embodiment is also applicable to the case where the hybrid carrier includes two or more types of carriers.
  • Figure 1 is a flow chart of the method. Referring to Figure 1, the method includes:
  • Step 101 The base station sends a carrier conversion indication message to the UE of the local cell, and the carrier conversion indication message indicates that the carrier type of the local cell of the UE is about to change.
  • Step 102 The base station converts the carrier type, and modifies the content and/or the sending manner of the corresponding system information and the sequence and/or sending manner of the common signal.
  • the carrier switching indication message may be carried by the RRC signaling, but this embodiment is not limited thereto.
  • the RRC signaling may be used by the base station to notify the user of the local cell that the carrier type of the cell is about to change. For example, the carrier of the current cell is about to be converted from carrier type A to carrier type 3.
  • the RRC signaling can also carry some other corresponding information for user identification and processing.
  • the carrier switching indication message may further carry a new identifier of the cell, that is, a cell identifier of the converted carrier.
  • the base station and the user can pre-agreed the carrier switching opportunity, that is, when the cell changes the cell identity and makes corresponding changes, for example, the first frame of the next frame after the user receives the carrier switching indication message.
  • Sub-frame whereby the user can perform corresponding processing of carrier conversion at a corresponding time point according to the agreed carrier switching opportunity.
  • the carrier switching indication message may be used to carry the foregoing carrier switching opportunity, that is, at what point in time the bearer cell will change the cell identifier and make a corresponding change, for example, after delaying several subframes, thereby the user may
  • the carrier switching occasion performs corresponding processing of carrier conversion at a corresponding time point.
  • the user may use the received new cell identifier to identify the cell system information, receive the cell common signal, the downlink control channel, and change its own uplink signal at the specified time point.
  • Corresponding processing of carrier coding related to the scrambling code sequence and the reference signal sequence is only an example, and the embodiment is not limited thereto.
  • the carrier switching indication message may not carry the cell identifier, and may also carry the cell identifier. This embodiment is not limited thereto.
  • the carrier switching indication message may further carry a subframe pattern of a subframe carrying the BCT and/or a subframe pattern of the subframe carrying the NCT, so that the base station carries the subframe pattern. The corresponding user is scheduled on the subframe of the BCT or on the subframe carrying the NCT.
  • the base station can convert the carrier type, for example, modifying the content and/or the transmission mode of the corresponding system information and the sequence and/or transmission mode of the common signal.
  • the system information to be modified and the content of the common signal are different according to the scenario of the carrier type conversion. The different scenarios combined with the carrier type conversion are described in detail below.
  • the base station if the converted carrier is a hybrid carrier, the base station also stops scheduling the UE on a subframe carrying a carrier that does not support UE access. For example, in the case of converting from BCT to hybrid carrier, for the first type of users and the second type of users, since they do not support NCT, the base station stops scheduling the two types of users on the bearer-bearing NCT subframe of the hybrid carrier.
  • the base station if the converted carrier is a hybrid carrier, and the UE supports only one of the hybrid carriers, the base station also stops the carrier that carries the carrier that does not support the UE access. The UE is scheduled on the frame. For example, for the case of converting from NCT to hybrid carrier, for the fourth type of user, since it only supports NCT, the base station stops stopping scheduling such users on the BCT-bearing subframe of the hybrid carrier.
  • the converted carrier is a hybrid carrier
  • the two carriers on the hybrid carrier have the same cell identifier (referred to as a hybrid carrier with the same cell identifier)
  • the user supports the hybrid carrier.
  • the user can use the hybrid carrier as its serving cell, and the base station can schedule the user on any subframe in the hybrid carrier.
  • the converted carrier is a hybrid carrier
  • the cell identifiers of the two carriers on the hybrid carrier are different (referred to as hybrid carriers with different cell identifiers)
  • the user supports the hybrid carrier.
  • the user can use only one of the carriers as its serving cell, or the two carriers can be used as its serving cell.
  • the user implements dual-connectivity with the two cells.
  • the base station may schedule the user on the subframe in which the carrier corresponding to the serving cell of the user is located after determining the serving cell of the user.
  • the base station may schedule the user in a subframe in which each carrier of the hybrid carrier is located in a time division multiplexing manner.
  • the base station may first change the carrier class to be changed according to the current cell before sending the carrier conversion indication message to the user of the local cell.
  • Type switching users who are not able to provide services to carriers that can serve them.
  • the specific switching method is the same as the existing standard, and is not described here.
  • the conversion from BCT to NCT, the conversion from NCT to BCT, the conversion from BCT to the hybrid carrier, and the conversion from NCT to the hybrid carrier can be realized.
  • the base station may first switch the first type and the second type of users, because the first type of users and the second type of users do not support. NCT, then perform carrier conversion according to the method of FIG.
  • the base station sends the carrier switching indication message to the user of the cell (where the user of the cell is still able to continue to serve the user).
  • the base station may transmit synchronization signals (e.g., PSS/SSS) and/or cell-specific signals (e.g., cell-specific pilot signals) and/or corresponding system information on the new NCT carrier.
  • synchronization signals e.g., PSS/SSS
  • cell-specific signals e.g., cell-specific pilot signals
  • the base station may also switch the first type and the second type of users first, and then perform carrier conversion according to the method of FIG.
  • the base station sends the carrier switching indication message to the user of the cell, that is, the user who can still continue to serve the same, and the carrier switching indication message may include the cell identifier of the new carrier.
  • the base station may send a synchronization signal (such as PSS/SSS) and/or a cell-specific signal (such as a cell-specific pilot signal) and/or a new cell identity on the new NCT carrier. Or corresponding system information.
  • the base station may first switch the fourth type of user out, because the user does not support the BCT, and then performs carrier conversion according to the method of FIG. .
  • the base station sends the carrier switching indication message to the user of the cell, that is, the user who can continue to serve the user.
  • the base station may transmit synchronization signals (e.g., PSS/SSS) and/or cell-specific signals (e.g., cell-specific pilot signals) and/or corresponding system information on the new BCT carrier.
  • synchronization signals e.g., PSS/SSS
  • cell-specific signals e.g., cell-specific pilot signals
  • the base station may also switch the fourth type of user first, and then perform carrier conversion according to the method of FIG.
  • the base station sends the carrier switching indication message to the user of the cell, that is, the user that can still continue to serve the same, and the carrier switching indication message may include the cell identifier of the new carrier.
  • the base station may send a synchronization with the new cell identity on the new BCT carrier. Signals (eg, PSS/SSS) and/or cell-specific signals (eg, cell-specific pilot signals) and/or corresponding system information.
  • Signals eg, PSS/SSS
  • cell-specific signals eg, cell-specific pilot signals
  • the base station may first switch the first type of user out because the first type of user does not support the NCT and cannot use the subframe.
  • the mode of the pattern performs RRM measurement on the BCT carrier, and then performs carrier conversion according to the method of FIG.
  • the base station sends the carrier switching indication message to the user of the cell, that is, the user that can still continue to serve the same, and the hybrid carrier is non-transparent, because it can continue to If the user that is served and the hybrid carrier is non-transparent may be the third or fourth type of user, the carrier switching indication message may include a subframe pattern of the subframe carrying the BCT and/or a subframe of the subframe carrying the NCT. Frame pattern.
  • the base station may transmit a separate synchronization signal (eg, PSS/SSS) and/or a cell-specific signal (eg, cell-specific pilot signal) and/or system information on the new NCT carrier.
  • a separate synchronization signal eg, PSS/SSS
  • a cell-specific signal eg, cell-specific pilot signal
  • the base station may also modify the BCT carrier system information to indicate that it is a hybrid carrier.
  • non-transparent means that the user knows that the converted carrier is a hybrid carrier, the same below.
  • the base station may first switch the first type of user out because the first type of user does not support the NCT and cannot use the subframe.
  • the mode of the pattern performs RRM measurement on the BCT carrier, and then performs carrier conversion according to the method of FIG.
  • the base station sends the carrier switching indication message to the user of the cell, that is, the user who can still continue to serve the same, and the hybrid carrier is non-transparent.
  • the carrier switching indication message may include a subframe pattern of a subframe carrying the BCT, and the user may still be a third class or a fourth class of users that may continue to be served for the hybrid carrier.
  • the carrier switching indication message may further include a cell identifier of the new NCT carrier.
  • the base station may transmit a separate synchronization signal (eg, PSS/SSS) and/or a cell-specific signal (eg, cell-specific pilot signal) and/or system information on the new NCT carrier. This can be indicated in the NCT system information as a hybrid carrier.
  • the base station may also modify the BCT carrier system information to indicate that it is a hybrid carrier.
  • the cell identifier does not change. Since the current carrier is an NCT, the user served by the NCT does not include the first type and the second type of users.
  • the base station Carrier conversion can be performed directly in accordance with the method of FIG.
  • the base The station transmits the carrier switch indication message to the user of the cell, that is, the user who can still continue to serve the user and the hybrid carrier is non-transparent.
  • the carrier switching indication message may include a subframe pattern of a subframe carrying the BCT, and the user may still be a third class or a fourth class of users that may continue to be served for it and the hybrid carrier is non-transparent.
  • the base station may transmit separate synchronization signals (e.g., PSS/SSS) and/or cell-specific signals (e.g., cell-specific pilot signals) and/or system information on the new BCT carrier.
  • PSS/SSS synchronization signals
  • cell-specific signals e.g., cell-specific pilot signals
  • system information e.g., cell-specific pilot signals
  • the base station may also modify the NCT carrier system information to indicate that it is a hybrid carrier.
  • the cell identity changes, and since the current carrier is the NCT, the user served by the NCT does not include the first class and the second class of users.
  • Carrier conversion can be performed directly in accordance with the method of FIG.
  • the base station sends the carrier switch indication message to the user of the cell, that is, the user who can still continue to serve the user and the hybrid carrier is non-transparent.
  • the carrier switching indication message may include a subframe pattern of a subframe carrying the BCT, and the user may still be a third class or a fourth class of users that may continue to be served for it and the hybrid carrier is non-transparent.
  • the carrier switching indication message may further include a cell identifier of the new NCT carrier and/or the BCT carrier.
  • the base station may transmit a separate synchronization signal (e.g., PSS/SSS) and/or a cell-specific signal (e.g., cell-specific pilot signal) and/or system information on the new BCT carrier.
  • a separate synchronization signal e.g., PSS/SSS
  • a cell-specific signal e.g., cell-specific pilot signal
  • system information of the BCT carrier which is a hybrid carrier.
  • the base station may also modify the mixed carrier system information so that it can indicate that it is a hybrid carrier.
  • the base station may first switch the fourth type of user out, because the fourth type of user does not support the BCT, and then according to FIG.
  • the method performs carrier conversion.
  • the base station sends the carrier switch indication message to a user that can continue to serve it and the hybrid carrier is non-transparent.
  • the base station may modify the system information of the BCT to remove the part indicating the hybrid carrier.
  • the base station may first switch the second type of users out, and then perform carrier conversion according to the method of FIG.
  • the base station sends the carrier switching indication message to a user that can still continue to serve the same, and the hybrid carrier is non-transparent.
  • the base station may modify the system information of the NCT to remove the part indicating the hybrid carrier.
  • the base station may first switch the fourth type of user out, and then perform the method according to FIG. Carrier conversion.
  • the base station sends the carrier switching indication message to a user that can still continue to serve it and the hybrid carrier is non-transparent.
  • the base station may modify the system information of the BCT to remove the part indicating the hybrid carrier.
  • the base station may first switch the second type of users out, and then perform carrier conversion according to the method of FIG.
  • the base station sends the carrier switch indication message to a user who can continue to serve it and the hybrid carrier is non-transparent.
  • the base station may modify the system information of the NCT to remove the part indicating the hybrid carrier.
  • the carrier conversion method of the embodiment of the present invention can better utilize the advantages of BCT and NCT, and achieve a smooth transition of the carrier service user.
  • the embodiment of the present invention further provides a carrier conversion method, which is a process on the user side corresponding to the method of Embodiment 1.
  • 2 is a flow chart of the method. Referring to FIG. 2, the method includes:
  • Step 201 After receiving the carrier conversion indication message sent by the base station, the user equipment determines the carrier conversion time point according to the time indication information carried in advance or the carrier conversion indication message;
  • Step 202 The user equipment performs carrier conversion at a determined carrier switching time point.
  • the base station and the user may pre-agreed the carrier conversion time point, and may also carry the time indication information by using the carrier conversion indication message, and indicate the carrier conversion time point by using the time indication information, thereby the user may Carrier conversion is performed at a determined carrier switching time point.
  • the user equipment may use the cell identifier included in the carrier switching indication message at the time of the carrier transition (the carrier conversion indication message carries the cell identifier of the new cell or the cell identifier of the original cell, and the cell identifier changes. Or no change) or use the original cell identity (carrier conversion indication message did not).
  • the carrier conversion indication message did not There is a carried cell identifier, the cell identifier does not change, the cell system message is received, the cell common signal and the downlink control signal are received, and the scrambling code sequence and the reference signal sequence related to the cell identifier in the uplink signal of the user equipment are changed. . I will not repeat them here.
  • the converted carrier is a hybrid carrier with the same cell identifier, and the user equipment supports all carriers in the hybrid carrier, the user equipment may use the hybrid carrier as Its serving cell, at this time, the base station can schedule the user on any subframe of the hybrid carrier.
  • the user equipment may be Two carriers of the hybrid carrier are used as their serving cells to implement dual connectivity of cells corresponding to the two carriers, and the base station schedules the users on two carriers in a time division multiplexing manner; the user equipment may also be in the hybrid One of the carriers is used as the serving cell, and only the subframe in which the carrier is located is used. After the base station determines the serving cell of the user, the base station schedules the user in the subframe in which the carrier corresponding to the cell is located.
  • the converted carrier is a hybrid carrier
  • the current carrier is before the hybrid carrier, the current carrier is already the serving cell of the UE,
  • the UE directly uses the hybrid carrier as its serving cell, as long as the base station avoids scheduling the UE in the subframe that does not support UE access; in another embodiment, if the serving cell of the UE does not use the hybrid carrier
  • the serving cell of the UE may first configure the UE to measure the carrier supported by the UE in the hybrid subframe in a subframe pattern manner, and then, according to the measurement result, switch the UE that meets the condition into the hybrid carrier.
  • the UE is configured to use the cell that uses the hybrid carrier as its serving cell.
  • the base station of the new cell avoids scheduling the UE in the subframe that does not support UE access.
  • the UE if the UE is in use After the coverage of the cell of the hybrid carrier is started, the UE discovers and measures the cell in the manner of a normal carrier. As a result, the UE can successfully access the cell, and the base station of the cell can avoid scheduling the UE in the subframe that does not support the UE access.
  • the UE supports the carrier system.
  • the available resources of the transmitting P ACH preamble carried in the information are all at the subframe used to carry the carrier.
  • the carrier conversion indication message has been described in detail in Embodiment 1, and will not be described again.
  • the carrier conversion method of the embodiment of the present invention can better utilize the advantages of the BCT and the NCT, and achieve a smooth transition of the carrier service user.
  • Example 3
  • FIG. 3 is a flow chart of the method, please refer to Figure 3, the method includes:
  • Step 301 The base station switches all the UEs in the local cell to the carrier that can provide the service to the UE.
  • the specific switching method is the same as the existing standard, and details are not described herein again.
  • Step 302 The base station converts the carrier type, and modifies the content and/or the sending manner of the corresponding system information and the sequence and/or sending manner of the common signal.
  • a carrier that can serve the UE of the current cell outside the current carrier is used as a transition, and all UEs are switched out before the carrier type is converted, and then the carrier type is switched. Then, the base stations that can provide services for the UE (that is, the base stations corresponding to the carriers that serve the UE, for convenience of explanation and understanding, hereinafter referred to as transition carriers) are switched back to the UE according to actual conditions.
  • transition carriers The processing of the base station corresponding to the transition carrier will be described in another embodiment.
  • the UE that switches out for carrier conversion and switches to the converted carrier after carrier conversion can work on the converted carrier.
  • the base station stops at the bearer that does not support UE access.
  • the UE is scheduled on a subframe of the carrier. For example, if the first type of user and the second type of user do not support the NCT, the base station stops scheduling the UE on the subframe carrying the NCT after switching to the hybrid carrier. For example, if the fourth type of user does not support the BCT, the base station is converting. After the hybrid carrier is transmitted, the UE is scheduled to be scheduled on the subframe carrying the BCT.
  • the converted carrier is a hybrid carrier with the same cell identity
  • the UE supports all carriers in the hybrid carrier, and the UE may use the hybrid carrier as its serving cell, and the base station may schedule the UE in any subframe of the hybrid carrier.
  • the converted carrier is a hybrid carrier with different cell identifiers
  • the UE may use one of the carriers as its serving cell. Determining, by the base station, the serving cell of the UE, scheduling the UE in a subframe in which the carrier corresponding to the serving cell of the UE is located; the UE may also use the two carriers as the serving cell, and time division multiplexed
  • the method implements dual connectivity with the two cells. At this time, the base station schedules the UE in a subframe in which each carrier of the hybrid carrier is located in a time division multiplexing manner.
  • the conversion from BCT to NCT the conversion from NCT to BCT, BCT can be realized. Conversion to a hybrid carrier, and conversion of the NCT to a hybrid carrier.
  • the base station may send a synchronization signal (eg, PSS/SSS) and/or a cell-specific signal (eg, cell-specific) on the new NCT carrier corresponding to step 302. Pilot signal) and / or corresponding system information.
  • a synchronization signal eg, PSS/SSS
  • a cell-specific signal eg, cell-specific
  • the base station may send a synchronization signal (eg, PSS/SSS) and/or cell-specific on the new NCT carrier that is consistent with the new cell identity.
  • a synchronization signal eg, PSS/SSS
  • Signals eg, cell-specific pilot signals
  • corresponding system information e.g., cell-specific pilot signals
  • the base station may send a synchronization signal (eg, PSS/SSS) and/or a cell-specific signal (eg, cell-specific) on the new BCT carrier corresponding to step 302. Pilot signal) and / or corresponding system information.
  • a synchronization signal eg, PSS/SSS
  • a cell-specific signal eg, cell-specific
  • the base station may send a synchronization signal (eg, PSS/SSS) and/or cell-specific on the new BCT carrier that is consistent with the new cell identity.
  • a synchronization signal eg, PSS/SSS
  • Signals eg, cell-specific pilot signals
  • corresponding system information e.g., cell-specific pilot signals
  • the base station may send a separate synchronization signal (eg, PSS/SSS) and/or cell-specific on the new NCT carrier.
  • Signals eg, cell-specific pilot signals
  • the NCT system information may indicate that this is a hybrid carrier.
  • the base station may also modify the BCT carrier system information to indicate that it is a hybrid carrier.
  • the base station may send a separate synchronization signal (eg, PSS/SSS) and/or a cell-specific signal on the new NCT carrier. (eg cell-specific pilot signals) and/or system information.
  • a separate synchronization signal eg, PSS/SSS
  • a cell-specific signal e.g cell-specific pilot signals
  • system information may indicate that this is a hybrid carrier.
  • the base station may also modify the BCT carrier system information to indicate that it is a hybrid carrier.
  • the base station may send a separate synchronization signal (eg, PSS/SSS) and/or cell-specific on the new BCT carrier.
  • Signals eg, cell-specific pilot signals
  • system information may be indicated in the system information of the BCT carrier, which is a hybrid carrier.
  • the base station may also modify the NCT carrier system information to indicate that it is a hybrid carrier.
  • the base station may transmit a separate synchronization signal (e.g., PSS/SSS) and/or a cell-specific signal (e.g., cell-specific pilot signal) and/or system information on the new BCT carrier.
  • a separate synchronization signal e.g., PSS/SSS
  • a cell-specific signal e.g., cell-specific pilot signal
  • system information e.g., cell-specific pilot signal
  • the base station may also modify the NCT carrier system information to indicate that it is a hybrid carrier.
  • the base station may modify the system information of the BCT to remove the part indicating the hybrid carrier.
  • the base station may modify the system information of the NCT to remove the part indicating the hybrid carrier.
  • the cell identity changes, corresponding to step 302.
  • the base station may modify the system information of the BCT to remove the part indicating the hybrid carrier.
  • the cell identity changes, corresponding to step 302.
  • the base station may modify the system information of the NCT to remove the part indicating the hybrid carrier.
  • the carrier conversion method of the embodiment of the present invention can better utilize the advantages of BCT and NCT, and achieve a smooth transition of the carrier service user.
  • Embodiments of the present invention provide a carrier conversion method, which is a process of a transient carrier corresponding to the method of Embodiment 3.
  • 4 is a flow chart of the method. Referring to FIG. 4, the method includes:
  • Step 401 The base station sends a measurement configuration message to the UE, and indicates that the UE performs measurement on the specified carrier.
  • the base station may carry the measurement configuration message by using the RRC signaling, that is, the UE is configured to measure the specified carrier by using the RRC signaling.
  • the base station may configure the UE to perform measurement on the converted carrier of the base station of Embodiment 2.
  • the UE may be the UE that the base station of the embodiment 3 switches to the UE of the base station of the embodiment, and the UE supports the converted carrier; the UE may also be the cell determined by the base station according to the embodiment according to its own policy.
  • the UE in the embodiment is not limited thereto.
  • Step 402 The base station determines, according to the measurement report of the specified carrier by the UE, whether to switch the UE to the specified carrier.
  • Step 403 The base station sends a handover command and handover assistance information to the UE to switch the UE to the designated carrier, when determining, according to the measurement report, that the UE can be handed over to the designated carrier.
  • the base station in this embodiment may provide the UE with some auxiliary information required for handover (in this embodiment, referred to as handover assistance information), in order to speed up the handover of the UE to the carrier converted by the base station of Embodiment 3.
  • the handover assistance information may be included in the above-mentioned handover command, and may be carried by the above-mentioned handover command, or may be carried by other messages. This embodiment is not limited thereto. Specific embodiments of the auxiliary information will be described in the following embodiments.
  • the content configured in step 401 is different according to different switching scenarios of Embodiment 3.
  • the base station may configure, by using the foregoing RRC signaling, the UE to measure the converted carrier by using the NCT, regardless of whether the cell identifier is changed.
  • the base station may configure, by using the foregoing RRC signaling, the UE to measure the converted carrier by using a BCT.
  • the base station may configure a subframe pattern of a subframe used to carry the BCT to the UE, so that the UE adopts The subframe pattern is used to measure the converted carrier in a BCT manner; and/or, the base station may also configure a subframe pattern of the subframe used to carry the NCT to the UE, so that the UE uses the subframe pattern to measure the converted using the NCT method. Carrier.
  • the base station may configure, by using the foregoing RRC signaling, the UE to measure the converted carrier by using the BCT.
  • the base station may configure, by using the foregoing RRC signaling, the UE to measure the converted carrier by using the NCT.
  • the carrier conversion method of the embodiment of the present invention can better utilize the advantages of BCT and NCT, and achieve a smooth transition of the carrier service user.
  • the embodiment further provides a carrier conversion method, which corresponds to the processing on the UE side of Embodiment 4.
  • Figure 5 is a flow chart of the method. Referring to Figure 5, the method includes:
  • Step 501 The user equipment receives measurement configuration information sent by the base station, and performs measurement on the specified carrier according to the measurement configuration information.
  • the measurement configuration information can be carried by the RRC signaling, as described in Embodiment 4, and details are not described herein again.
  • the UE feeds back the measurement report to the base station, and the base station determines whether to switch the UE to the specified carrier.
  • Step 502 After receiving the handover command and the handover assistance information sent by the base station, the user equipment switches to the designated carrier according to the handover assistance information.
  • the handover command is sent to the user equipment in this embodiment.
  • the handover assistance command may be carried in the handover command, or may be carried in other messages.
  • the auxiliary information is switched, whereby the user equipment can use the handover assistance information to switch to the carrier designated by the base station, thereby speeding up the handover process.
  • the handover assistance information will be described in detail in the following embodiments.
  • the carrier conversion method of the embodiment of the present invention can better utilize the advantages of BCT and NCT, and achieve a smooth transition of the carrier service user.
  • Figure 6 is a flow chart of the method, please refer to Figure 6, the method includes:
  • Step 601 The base station stops scheduling the user equipment on a part of the subframe of the current carrier.
  • Step 602 The base station converts a carrier type of the part of the subframe, and modifies a content and/or a sending manner of the corresponding system information, and a sequence and/or a sending manner of the common signal.
  • Step 603 The base station switches a user equipment that can be switched to the converted carrier in the current cell to the converted carrier.
  • Step 604 The base station converts a carrier type of the subframe of the current carrier other than the foregoing part of the subframe into the converted carrier.
  • the cell identity change may occur, all UEs may have to be switched to other carriers during the handover process, and then they are switched back.
  • the hybrid carrier is used as a transition state, so that the influence of other cells can be avoided, and the handover of the UE from the old carrier to the new carrier is implemented in the local cell.
  • the base station may first change the carrier type according to the current cell.
  • a UE that is not ready to be served is switched to a carrier that can provide services for it.
  • the UE is scheduled to be scheduled on a part of the subframe of the current carrier, and the purpose of this is to perform carrier conversion on the part of the subframe.
  • the base station may send, to the UE, configuration information including a subframe pattern that carries subframes other than the foregoing partial subframe, so as to The UE performs RRM measurement in a subframe pattern according to the subframe pattern.
  • the configuration information can be implemented by using RRC signaling.
  • the modification of the system information and the common signal may refer to Embodiment 1, and details are not described herein again.
  • the base station may first configure the UE to measure the converted carrier in a subframe pattern by using RRC signaling, for example, send carrier measurement configuration information to the user equipment in the local cell, and indicate that the user equipment is converted. The carrier is measured, and then the UE is switched to the converted carrier according to the measurement result of the UE on the converted carrier. The base station switches the user equipment in the cell that cannot be switched to the converted carrier to a carrier that can provide services for the user equipment. And switching the user equipment in the cell that can switch to the converted carrier to the converted carrier.
  • the base station may also send handover assistance information to the UE, so that the user equipment switches to the converted carrier according to the handover assistance information. Thereby, the handover of the UE can be calculated.
  • the embodiment of the handover assistance information will be described in the following embodiments.
  • the base station may send, to the user equipment, configuration information including a subframe pattern of a subframe carrying the converted carrier, so as to support the high-level UE that works in a subframe pattern manner, so that The user equipment works in a subframe pattern according to the subframe pattern (for example, the UE monitors a PDCCH (Physical Downlink Control Channel) only on a subframe carrying the carrier it accesses; or if not The ePDCCH (enhanced-PDCCH, enhanced physical downlink control channel) is separately configured, and the UE monitors the ePDCCH only in the subframe carrying the carrier to which it is connected.
  • the configuration information may be carried by the message of the handover process, for example, in the configuration switching information or in the message 2 of the random access procedure, which is not limited by this embodiment. Thus, a higher version of the UE can operate on the converted carrier.
  • the base station may schedule the user equipment in the part of the subframe. For example, the base station may send, to the user equipment, configuration information including a subframe pattern of a subframe carrying the converted carrier, so that the user equipment operates in a subframe pattern according to the subframe pattern.
  • the The base station can schedule user equipment on all subframes.
  • the base station may send a notification message to the user equipment of the local cell, and notify the user equipment that it may be scheduled in any subframe.
  • a notification message to the user equipment of the local cell, and notify the user equipment that it may be scheduled in any subframe.
  • the conversion of the BCT to the NCT (cell identity change) and the conversion of the NCT to the BCT (cell identity change) can be implemented.
  • the base station may first switch the first type of user and the second type of user, because the first type of user and the second type of user do not support NCT. . Thereafter, corresponding to step 602, the base station may send a synchronization signal (eg, PSS/SSS) and/or a cell-specific signal (eg, a cell-specific pilot signal) and/or corresponding system information consistent with the new cell identity on the new NCT carrier. .
  • a synchronization signal eg, PSS/SSS
  • a cell-specific signal eg, a cell-specific pilot signal
  • the base station may first switch the fourth type of user out because the fourth type of user does not support the BCT. Thereafter, corresponding to step 602, the base station may send a synchronization signal (eg, PSS/SSS) and/or a cell-specific signal (eg, a cell-specific pilot signal) and/or corresponding system information consistent with the new cell identity on the new BCT carrier. .
  • a synchronization signal eg, PSS/SSS
  • a cell-specific signal eg, a cell-specific pilot signal
  • the processing on the UE side corresponding to the base station side in this embodiment may be implemented by the method in Embodiment 5, and details are not described herein again.
  • the carrier conversion method of the embodiment of the present invention can better utilize the advantages of BCT and NCT, and achieve a smooth transition of the carrier service user.
  • FIG. 7 is the flow of the method. Referring to Figure 7, the method includes:
  • Step 701 The base station sends a handover command and handover assistance information to the user equipment, so that the user equipment converts the current carrier type into the carrier type specified by the base station according to the handover assistance information.
  • the base station when the base station decides to switch the UE to another cell corresponding to the carrier supported by the UE, for example, the scenario of Embodiment 4 or the scenario of Embodiment 6, the base station accelerates by sending some handover assistance information to the UE. The handover of the UE.
  • the handover assistance information may be information related to downlink synchronization, information related to uplink random access, or indication information indicating whether the current carrier and the converted carrier are in the same state. Or any combination of the above information, this embodiment is not limited thereto.
  • the information about the downlink synchronization may be used to indicate that the downlink timing of the UE after the UE is converted is the same as the current carrier (the carrier before the conversion), thereby speeding up the handover of the UE, for example, the auxiliary information. It enables the UE to quickly locate the location of the synchronization signal.
  • the foregoing information related to the uplink random access may indicate that the UE can still reuse the TA (Timing Advance) of the pre-conversion carrier in the converted carrier, and convert The C-RNTI (Cell Radio Network Temporary Identifier) used in the previous carrier, whereby the UE can remove the random access in the target carrier (converted carrier) and directly switch to the new carrier.
  • TA Timing Advance
  • C-RNTI Cell Radio Network Temporary Identifier
  • two carriers may be defined in a state in which two carriers may be considered to have the same uplink and downlink timings; or, two carriers may be defined to be in a state in which the two carriers are in a state.
  • the UE may not perform random access, and directly switch from one carrier to another after receiving the handover command.
  • the base station may directly notify the UE whether the carrier before the conversion and the converted carrier are in the foregoing state.
  • the UE may directly save or accelerate the downlink synchronization or the uplink synchronization. Process, or switch directly to the target carrier.
  • the embodiment of the present invention further provides a carrier conversion method, which is corresponding to the processing on the UE side of Embodiment 7.
  • the method includes:
  • Step 801 The user equipment receives the handover command and the handover assistance information sent by the base station.
  • Step 801 The user equipment converts a current carrier type into a carrier type specified by the base station according to the handover assistance information.
  • the switching assistance information has been described in Embodiment 7, and the content thereof is incorporated herein, and details are not described herein again.
  • the UE is accelerated to switch to the new carrier.
  • the embodiment of the present invention further provides a base station, as described in the following Embodiment 9, the principle of solving the problem is similar to the method of Embodiment 1, and the specific implementation may refer to the implementation of the method in Embodiment 1, The description of the content is not repeated.
  • FIG. 9 is a schematic diagram of the composition of the base station.
  • the base Station includes:
  • the sending unit 91 sends a carrier switching indication message to the UE of the local cell, and indicates that the carrier type of the local cell of the UE is about to change by using the carrier switching indication message;
  • the processing unit 92 converts the carrier type, modifies the content and/or the transmission mode of the corresponding system information, and the sequence and/or transmission mode of the common signal.
  • the base station further includes:
  • the switching unit 93 before the sending unit 91 sends a carrier switching indication message to the UE of the local cell, according to the carrier type that the cell is about to change, switches the UE that cannot be served for the UE to the carrier that can provide the service. .
  • the carrier conversion indication message includes a cell identifier of a carrier type to be changed and/or a subframe pattern of a subframe carrying a BCT and/or a subframe pattern of a subframe carrying an NCT.
  • the base station further includes:
  • the first scheduling unit 94 stops scheduling the UE on a subframe carrying a carrier that does not support UE access when the converted carrier is a hybrid carrier.
  • the base station further includes:
  • the second scheduling unit 95 when the converted carrier is a hybrid carrier, and the UE only supports one of the hybrid carriers, stops scheduling the UE on a subframe carrying a carrier that does not support UE access.
  • the base station further includes:
  • the third scheduling unit 96 is configured to: when the converted carrier is a hybrid carrier with the same cell identifier, and the UE supports all carriers in the hybrid carrier, scheduling the UE in any subframe of the hybrid carrier.
  • the base station further includes:
  • a fourth scheduling unit 97 where the converted carrier is a hybrid carrier with different cell identifiers, and when the UE supports all carriers in the hybrid carrier, determining a serving cell of the UE, corresponding to a serving cell of the UE Scheduling the UE in a subframe in which the carrier is located; or scheduling the UE in a subframe in which each carrier of the hybrid carrier is located in a time division multiplexing manner.
  • the advantages of the BCT and the NCT can be better utilized, and a smooth transition of the carrier service user can be realized.
  • the embodiment of the present invention further provides a user equipment, as described in the following embodiment 10.
  • the principle of the user equipment is similar to that of the second embodiment. Therefore, the specific implementation may refer to the method of the second embodiment. The implementation of the law, the same content will not be repeated.
  • FIG. 10 is a schematic diagram of the composition of the user equipment.
  • the user equipment includes:
  • a determining unit 1001 after receiving the carrier switching indication message sent by the base station, determining a carrier switching time point according to a pre-agreed or time indication information carried in the carrier switching indication message;
  • the switching unit 1002 performs carrier conversion at a carrier switching time point determined by the determining unit 1001.
  • the switching unit 1002 uses the cell identifier of the converted carrier to identify a cell system message at the carrier switching time point when the carrier conversion indication information includes a cell identifier of the converted carrier. And receiving a cell common signal and a downlink control signal, and changing a scrambling code sequence and a reference signal sequence related to the cell identifier in the uplink signal of the user equipment.
  • the user equipment further includes:
  • the first selecting unit 1003 is configured to use the hybrid carrier as its serving cell when the converted carrier is a hybrid carrier with the same cell identifier, and the user equipment supports all carriers in the hybrid carrier.
  • the user equipment further includes:
  • a second selecting unit 1004 where the converted carrier is a hybrid carrier with different cell identifiers, and the user equipment supports all the carriers in the hybrid carrier, and uses the hybrid carrier as its serving cell; or One of the hybrid carriers is used as its serving cell.
  • the advantages of the BCT and the NCT can be better utilized, and a smooth transition of the carrier service user can be realized.
  • the embodiment of the present invention further provides a base station.
  • the principle of the problem solved by the base station is similar to that of the third embodiment. Therefore, the specific implementation may refer to the implementation of the method in Embodiment 3. The description of the content is not repeated.
  • FIG. 11 is a schematic diagram of the structure of the base station.
  • the base station includes:
  • the base station further includes:
  • a first scheduling unit 1003 where the converted carrier is a hybrid carrier, and the UE that switches to the converted carrier only supports one of the hybrid carriers, and stops at a carrier that does not support UE access.
  • the UE is scheduled on a subframe.
  • the base station further includes:
  • a second scheduling unit 1004 where the converted carrier is a hybrid carrier with the same cell identifier, and the UE supports all the carriers in the hybrid carrier, scheduling the UE in any subframe of the hybrid carrier .
  • the base station further includes:
  • a third scheduling unit 1005 where the converted carrier is a hybrid carrier with different cell identifiers, and when the UE supports all carriers in the hybrid carrier, determining a serving cell of the UE, in the UE Scheduling the UE in a subframe in which the carrier corresponding to the serving cell is located; or scheduling the UE in a subframe in which each carrier of the hybrid carrier is located in a time division multiplexing manner.
  • the advantages of the BCT and the NCT can be better utilized, and a smooth transition of the carrier service user can be realized.
  • the embodiment of the present invention further provides a base station, as described in the following Embodiment 12.
  • the principle of solving the problem is similar to the method of Embodiment 4. Therefore, the specific implementation may refer to the implementation of the method in Embodiment 4. The description of the content is not repeated.
  • FIG. 12 is a schematic diagram of the structure of the base station.
  • the base station includes:
  • a first sending unit 1201 which sends a measurement configuration message to the UE, instructing the UE to perform a determining unit 1202 on the specified carrier, and determining, according to the measurement report of the specified carrier by the UE, whether to switch the UE to the specified Carrier wave
  • the embodiment of the present invention further provides a user equipment, as described in Embodiment 13 below. Since the principle of the user equipment is similar to that of Embodiment 5, the specific implementation may refer to the method of Embodiment 5. Implementation, content is the same and will not be repeated.
  • FIG. 13 is a schematic diagram of the composition of the user equipment.
  • the user equipment includes:
  • a measuring unit 1301, configured to measure a carrier wave specified by the base station according to the measured configuration information sent by the received base station;
  • the switching unit 1302 after receiving the handover command and the handover assistance information sent by the base station, switches to the designated carrier according to the handover assistance information.
  • the advantages of the BCT and the NCT can be better utilized, and a smooth transition of the carrier service user can be realized.
  • the embodiment of the present invention further provides a base station, as described in the following Embodiment 14.
  • the principle of solving the problem is similar to the method of Embodiment 6. Therefore, the specific implementation may refer to the implementation of the method in Embodiment 6. The description of the content is not repeated.
  • FIG. 14 is a schematic diagram of the composition of the base station.
  • the base station includes:
  • the first scheduling unit 1401 stops scheduling the user equipment on a part of the subframe of the current carrier; the first processing unit 1402 converts the carrier type of the part of the subframe, and modifies the content and/or the sending manner of the corresponding system information and The sequence and/or transmission method of the public signal;
  • a first switching unit 1403 which switches a user equipment that can be switched to the converted carrier in the current cell to the converted carrier;
  • the second processing unit 1404, the base station converts a carrier type of the subframe of the current carrier other than the part of the subframe to the converted carrier.
  • the base station further includes:
  • the first scheduling unit 1401 includes:
  • a first sending module 14011 configured to send, to the user equipment, configuration information that includes a subframe pattern that carries subframes other than the foregoing part of the subframe, so that the user equipment works in a subframe pattern according to the subframe pattern.
  • the base station further includes:
  • a determining unit 1407 which determines, according to the measurement report of the converted carrier by the user equipment, whether to switch the user equipment to the converted carrier;
  • the third switching unit 1408 switches the user equipment in the current cell that cannot be switched to the converted carrier to the carrier that can provide the service.
  • the first switching unit 1403 includes:
  • the second sending module 14031 sends the handover assistance information to the user equipment, so that the user equipment switches to the converted carrier according to the handover assistance information.
  • the first switching unit 1403 includes:
  • the third sending module 14032 sends, to the user equipment, configuration information including a subframe pattern of a subframe that carries the converted carrier, so that the user equipment works in a subframe pattern according to the subframe pattern.
  • the base station further includes:
  • the second scheduling unit 1409 after the first processing unit 1402 converts the carrier type of the part of the subframe, schedules the user equipment in the part of the subframe.
  • the second scheduling unit 1409 includes:
  • the fourth sending module 14091 sends configuration information of the subframe pattern of the subframe that carries the converted carrier to the user equipment, so that the user equipment works in a subframe pattern according to the subframe pattern.
  • the base station further includes:
  • the third scheduling unit 1410 after the second processing unit 1404 converts the other subframes into the converted subframe, schedules the user equipment on all subframes.
  • the base station further includes:
  • a second sending unit 1411 which sends a notification message to the user equipment of the local cell, to notify the user equipment of the May be scheduled in any subframe.
  • the advantages of the BCT and the NCT can be better utilized, and a smooth transition of the carrier service user can be realized.
  • the embodiment of the present invention further provides a base station, as described in the following Embodiment 15.
  • the principle of the problem solved by the base station is similar to the method of Embodiment 7. Therefore, the specific implementation may refer to the implementation of the method of Embodiment 7. The description of the content is not repeated.
  • FIG. 15 is a schematic diagram of the structure of the base station.
  • the base station includes:
  • the sending unit 1501 sends a handover command and handover assistance information to the user equipment, so that the user equipment converts the current carrier type into the carrier type specified by the base station according to the handover assistance information.
  • the switching assistance information includes:
  • the handover of the UE can be accelerated.
  • the embodiment of the present invention further provides a user equipment, as described in the following embodiment 16.
  • the principle of the user equipment is similar to that of the eighth embodiment. Therefore, the specific implementation may refer to the method of the eighth embodiment. Implementation, content is the same and will not be repeated.
  • FIG. 16 is a schematic diagram of the composition of the user equipment.
  • the user equipment includes:
  • the receiving unit 1601 receives the handover command and the handover assistance information sent by the base station;
  • the converting unit 1602 converts the current carrier type into the carrier type specified by the base station according to the handover assistance information.
  • the handover can be accelerated.
  • the embodiment of the present invention further provides a communication system, where the system includes the base station according to Embodiment 9 and the UE described in Embodiment 10, or the base station described in Embodiments 11 and 12, and Embodiment 13 UE, or the base station described in Embodiment 14 and the UE described in Embodiment 13, or the base described in Embodiment 15 Station and the UE described in Embodiment 16.
  • Embodiments of the present invention also provide a computer readable program, wherein when the program is executed in a base station, the program causes a computer to perform carrier conversion according to Embodiment 1, 3, 4, 6 or 7 in the base station method.
  • the embodiment of the present invention further provides a storage medium storing a computer readable program, wherein the computer readable program causes the computer to execute the carrier conversion method of Embodiment 1, 3, 4, 6 or 7 in a base station.
  • the embodiment of the present invention further provides a computer readable program, wherein when the program is executed in the terminal device, the program causes the computer to execute the carrier conversion method described in Embodiment 2, 5 or 8 in the terminal device.
  • the embodiment of the present invention further provides a storage medium storing a computer readable program, wherein the computer readable program causes the computer to execute the carrier conversion method described in Embodiment 2, 5 or 8 in the terminal device.
  • the above apparatus and method of the present invention may be implemented by hardware, or may be implemented by hardware in combination with software.
  • the present invention relates to a computer readable program that, when executed by a logic component, enables the logic component to implement the apparatus or components described above, or to cause the logic component to implement the various methods described above Or steps.
  • Logic components such as field programmable logic components, microprocessors, processors used in computers, and the like.
  • the present invention also relates to a storage medium for storing the above program, such as a hard disk, a magnetic disk, an optical disk, a DVD, a flash memory, or the like.

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Abstract

本发明实施例提供了一种载波转换方法、装置和系统,其中,所述方法包括:基站向本小区的UE发送载波转换指示消息,通过所述载波转换指示消息指示所述UE本小区的载波类型即将改变;所述基站转换载波类型,修改相应的系统信息的内容和/或发送方式以及公共信号的序列和/或发送方式。通过本发明实施例的载波转换方法,能更好的发挥BCT和NCT的优点,实现载波服务用户的平稳过渡。

Description

载波转换方法、 装置和系统 技术领域
本发明涉及通信领域, 尤其涉及一种载波转换(transform或者 switch)方法、 装 置和系统。 背景技术
近些年, 移动数据业务需求量迅速增长, 据预计, 相比 2010年, 2020年的数据 业务需求量将增长至 1000倍。 如何演进现在的移动通信网络并发展新技术去支持增 长如此迅速的业务已经成为移动通信领域的主要关注点之一。
在众多可能的解决方案中, 一种方案是采用 Small cell (小小区) 增加物理资源 复用率。 此外, 在覆盖面积相同的前提下, 用多个 small cell代替一个 macro cell (宏 小区) 也可以有效的节省电力开销。 Small cell是一种更为节能的绿色技术。 同时, Small cell更利于灵活部署, 可以根据用户量和业务数据量灵活的开启和关闭。
为了减少不必要的小区专用信号开销(例如, 即使没有下行用户数据传输, 小区 专用信号也会全带宽满功率发送), LTE (Long Term Evolution, 长期演进)标准版本 12 (Release 12) 的讨论中, 一种新型载波 (NCT, new carrier type) 正在被考虑。 相 对 NCT, 传统载波被称为 BCT (backwards compatibility carrier type)。 与 BCT相比, NCT还能够有效减少由不必要的小区专用信号造成的小区间干扰, 因此 NCT更适合 密集部署场景, 例如密集部署的 small cell采用 NCT能够有效提高用户接收信号的 SIN ( Signal to Interference plus Noise Ratio, 信号与干扰加噪声比), 从而进一步提 高小区容量。但是,由于 NCT不具有后向兼容性,因此 LTE版本 12以前的用户(UE, User Equipment, 也称为用户设备或终端设备或终端) 是不能够接入 NCT载波的。
应该注意, 上面对技术背景的介绍只是为了方便对本发明的技术方案进行清楚、 完整的说明, 并方便本领域技术人员的理解而阐述的。不能仅仅因为这些方案在本发 明的背景技术部分进行了阐述而认为上述技术方案为本领域技术人员所公知。 发明内容
本发明实施例的目的在于提供一种载波转换方法、 装置和系统, 以更好的发挥 BCT和 NCT的优点, 实现载波服务用户的平稳过渡。
根据本发明实施例的第一方面,提供了一种载波转换方法,其中,所述方法包括: 基站向本小区的 UE发送载波转换指示消息, 通过所述载波转换指示消息指示所 述 UE本小区的载波类型即将改变;
所述基站转换载波类型,修改相应的系统信息的内容和 /或发送方式以及公共信号 的序列和 /或发送方式。
根据本发明实施例的第二方面,提供了一种载波转换方法,其中,所述方法包括: 用户设备在接收到基站发送的载波转换指示消息后, 根据预先约定或者所述载波 转换指示消息携带的时间指示信息确定载波转换时间点;
所述用户设备在确定的载波转换时间点进行载波转换。
根据本发明实施例的第三方面,提供了一种载波转换方法,其中,所述方法包括: 基站将本小区的所有 UE切换到可以为所述 UE提供服务的载波;
所述基站转换载波类型,修改相应的系统信息的内容和 /或发送方式以及公共信号 的序列和 /或发送方式。
根据本发明实施例的第四方面,提供了一种载波转换方法,其中,所述方法包括: 基站停止在当前载波的一部分子帧上调度用户设备;
所述基站转换所述一部分子帧的载波类型,修改相应的系统信息的内容和 /或发送 方式以及公共信号的序列和 /或发送方式;
所述基站将本小区内能切换到转换后的载波的用户设备切换到所述转换后的载 波;
所述基站将所述当前载波的除上述一部分子帧以外的其他子帧的载波类型转换 为所述转换后的载波。
根据本发明实施例的第五方面,提供了一种载波转换方法,其中,所述方法包括: 基站向用户设备发送切换命令和切换辅助信息, 以便所述用户设备根据所述切换 辅助信息将当前的载波类型转换为所述基站指定的载波类型。
根据本发明实施例的第六方面,提供了一种载波转换方法,其中,所述方法包括: 用户设备接收基站发送的切换命令和切换辅助信息;
所述用户设备根据所述切换辅助信息将当前的载波类型转换为所述基站指定的 载波类型。 根据本发明实施例的第七方面, 提供了一种基站, 其中, 所述基站包括: 发送单元, 其向本小区的 UE发送载波转换指示消息, 通过所述载波转换指示消 息指示所述 UE本小区的载波类型即将改变;
处理单元,其转换载波类型,修改相应的系统信息的内容和 /或发送方式以及公共 信号的序列和 /或发送方式。
根据本发明实施例的第八方面,提供了一种用户设备,其中,所述用户设备包括: 确定单元, 其在接收到基站发送的载波转换指示消息后, 根据预先约定或者所述 载波转换指示消息携带的时间指示信息确定载波转换时间点;
切换单元, 其在所述确定单元确定的载波转换时间点进行载波转换。
根据本发明实施例的第九方面, 提供了一种基站, 其中, 所述基站包括: 切换单元, 其将本小区的所有 UE切换到可以为所述 UE提供服务的载波; 处理单元,其转换载波类型,修改相应的系统信息的内容和 /或发送方式以及公共 信号的序列和 /或发送方式。
根据本发明实施例的第十方面, 提供了一种基站, 其中, 所述基站包括: 第一调度单元, 其停止在当前载波的一部分子帧上调度用户设备;
第一处理单元, 其转换所述一部分子帧的载波类型, 修改相应的系统信息的内容 和 /或发送方式以及公共信号的序列和 /或发送方式;
第一切换单元, 其将本小区内能切换到转换后的载波的用户设备切换到所述转换 后的载波;
第二处理单元, 其将所述当前载波的除上述一部分子帧以外的其他子帧的载波类 型转换为所述转换后的载波。
根据本发明实施例的第十一方面, 提供了一种基站, 其中, 所述基站包括: 发送单元, 其向用户设备发送切换命令和切换辅助信息, 以便所述用户设备根据 所述切换辅助信息将当前的载波类型转换为所述基站指定的载波类型。
根据本发明实施例的第十二方面, 提供了一种用户设备, 其中, 所述用户设备包 括:
接收单元, 其接收基站发送的切换命令和切换辅助信息;
转换单元, 其根据所述切换辅助信息将当前的载波类型转换为所述基站指定的载 波类型。 根据本发明实施例的其他方面, 提供了一种通信系统, 其中, 所述系统包括第七 方面所述基站和第八方面所述的 UE, 或者包括第九方面所述的基站以及 UE, 或者 包括第十方面所述的基站以及 UE, 或者包括第十一方面所述的基站和第十二方面所 述的 UE。
根据本发明实施例的其他方面,提供了一种计算机可读程序,其中当在基站中执 行该程序时, 该程序使得计算机在所述基站中执行第一方面、 第三方面、 第四方面、 第五方面、 第六方面中任一方面所述的载波转换方法。
根据本发明实施例的其他方面, 提供了一种存储有计算机可读程序的存储介质, 其中该计算机可读程序使得计算机在基站中执行第一方面、第三方面、第四方面、第 五方面、 第六方面中任一方面所述的载波转换方法。
根据本发明实施例的其他方面,提供了一种计算机可读程序,其中当在终端设备 中执行该程序时,该程序使得计算机在所述终端设备中执行第二方面或第七方面所述 的载波转换方法。
根据本发明实施例的其他方面, 提供了一种存储有计算机可读程序的存储介质, 其中该计算机可读程序使得计算机在终端设备中执行第二方面或第七方面所述的载 波转换方法。
本发明实施例的有益效果在于:通过本发明实施例的载波转换方法、装置和系统, 能更好的发挥 BCT和 NCT的优点, 实现载波服务用户的平稳过渡。
参照后文的说明和附图,详细公开了本发明的特定实施方式,指明了本发明的原 理可以被采用的方式。应该理解, 本发明的实施方式在范围上并不因而受到限制。在 所附权利要求的精神和条款的范围内,本发明的实施方式包括许多改变、修改和等同。
针对一种实施方式描述和 /或示出的特征可以以相同或类似的方式在一个或更多 个其它实施方式中使用, 与其它实施方式中的特征相组合, 或替代其它实施方式中的 特征。
应该强调, 术语"包括 /包含"在本文使用时指特征、 整件、 步骤或组件的存在, 但并不排除一个或更多个其它特征、 整件、 步骤或组件的存在或附加。 附图说明
参照以下的附图可以更好地理解本发明的很多方面。附图中的部件不是成比例绘 制的, 而只是为了示出本发明的原理。 为了便于示出和描述本发明的一些部分, 附图 中对应部分可能被放大或缩小。在本发明的一个附图或一种实施方式中描述的元素和 特征可以与一个或更多个其它附图或实施方式中示出的元素和特征相结合。此外,在 附图中,类似的标号表示几个附图中对应的部件, 并可用于指示多于一种实施方式中 使用的对应部件。 在附图中:
图 1是本发明实施例 1的载波转换方法的流程图;
图 2是对应图 1的方法的 UE侧的处理的流程图;
图 3是本发明实施例 3的载波转换方法的流程图;
图 4是对应图 3的方法的过渡载波的处理的流程图;
图 5是对应图 4的方法的 UE侧的处理的流程图;
图 6是本发明实施例 6的载波转换方法的流程图;
图 7是本发明实施例 7的载波转换方法的流程图;
图 8是对应图 7的方法的 UE侧的处理流程图;
图 9是对应图 1的方法的基站的组成示意图;
图 10是对应图 2的方法的 UE的组成示意图;
图 11是对应图 3的方法的基站的组成示意图;
图 12是对应图 4的方法的基站的组成示意图;
图 13是对应图 5的方法的 UE的组成示意图;
图 14是对应图 6的方法的基站的组成示意图;
图 15是对应图 7的方法的基站的组成示意图;
图 16是对应图 8的方法的 UE的组成示意图。 具体实施方式
参照附图, 通过下面的说明, 本发明实施例的前述以及其它特征将变得明显。这 些实施方式只是示例性的, 不是对本发明的限制。
发明人在实现本发明的过程中发现,如果将 Small cell的灵活部署与 BCT和 NCT 载波相结合, 将会得到更好的效果。例如, 在某商业区密集部署了很多 small cell。在 早晨(非高峰期), 该区域用户很少, 只有很少的 small cell处于激活状态为用户提供 服务。 这时, 由于处于激活状态的 small cell数目较少, 小区间干扰水平较低。 为了 服务更多的用户, 包括新版本用户和传统用户, small cell采用 BCT载波。 随着时间 变化, 该区域用户数越来越多, 随着被激活的 small cell数目的增加, 该区域小区间 干扰水平上升, 当干扰水平上升到一定程度的时候, small cell可以从 BCT载波转换 至 NCT载波以降低小区间干扰水平更好的服务用户。用户逐渐增加,最后所有的 small cell都可以转换为 NCT载波。 随着时间推移, 用户数在达到顶峰之后逐渐减少, 处 于激活状态的 small cell越来越少, 该区域小区间干扰也越来越少。 当干扰水平降低 到一定程度以后, 处于激活状态的 small cell可以将载波转换为 BCT载波, 以便服务 更多的用户。
如何从 BCT转换为 NCT或者从 NCT转换为 BCT或者从 BCT转换为混合载波 或者从 NCT转换为混合载波, 是本发明的研究重点。
为了使本发明实施例更加清楚易懂,以下先对本发明实施例涉及到的几个概念进 行说明。
在本发明实施例中, 涉及到以下四种类型的用户设备:
第一类, 支持 BCT, 不支持 NCT, 不支持以子帧图案 (Subframe pattern) 进行 RRM ( adio Resource Management,无线资源管理)测量的用户,例如 LTE 版本 8 和 版本 9的用户。
第二类, 支持 BCT, 不支持 NCT, 可以支持以子帧图案进行 RRM测量的用户, 例如 LTE版本 10和版本 11的用户。
第三类, 支持 BCT, 也支持 NCT, 可以支持以子帧图案进行 RRM测量的用户。 第四类, 不支持 BCT, 仅支持 NCT, 可以支持以子帧图案进行 RRM测量的用 户。
在本发明实施例中, 涉及到的载波类型有以下四类:
第一类, 后向兼容性载波 (BCT)。
第二类, 新型载波 (NCT)
第三类, 第一类混合型载波, 它的一部分子帧承载 BCT载波, 另一部分子帧承 载 NCT载波, 且其所承载的 BCT载波和 NCT载波的工作频带彼此重叠, BCT载波 和 NCT载波的小区标识 (Cell_ID ) 相同。
第四类, 第二类混合型载波, 它的一部分子帧承载 BCT载波, 另一部分子帧承 载 NCT载波, 且其所承载的 BCT载波和 NCT载波的工作频带彼此重叠, BCT载波 和 NCT载波的 Cell_ID不同。
在本实施例中, 对于混合载波, 承载 BCT载波的子帧(简称 BCT子帧) 中包含 适用于 BCT的广播信息以及公共信号,例如公共参考信号,承载 NCT载波的子帧(简 称 NCT子帧) 中包含适用于 NCT的广播信息和公共信号。
在这里, 对于第一类混合载波(也即前述第三类载波), 还可以通过 BCT子帧和
NCT子帧承载不同的辅助信号(例如 PSS/SSS和小区专用导频信号), 以使得用户设 备可以根据 BCT子帧和 NCT子帧各自的辅助信号搜索到他们。
例如, 对于第一类混合载波, BCT 子帧上的广播信息可以指示这一个混合型载 波, BCT和 NCT具有相同的小区标识以及小区标识的具体取值, 以及可以进一步携 带该 BCT工作的子帧图案, 例如用 Bitmap 的形式进行指示。 在本实施例中, BCT 子帧上承载的这些信息放置在传统(Legacy)用户(如上述第一类用户和第二类用户) 不会读取的位置, 即这些信息只能服务于有能力识别该载波为混合载波的用户, 且该 信息不会影响 Legacy用户在该 BCT载波上的使用。 对于第一类型混合载波, NCT 子帧上的广播信息可以指示这是一个混合型载波, BCT和 NCT具有相同的小区标识 以及小区标识的具体取值, 以及可以进一步携带该 NCT工作的子帧图案, 例如用位 图 (Bitmap) 的形式进行指示。 同样的, NCT 子帧上的这些信息的放置不能妨碍上 述第四类用户在这个 NCT上的工作。
在这里,对于第二类混合载波(也即前述第四类载波),还提供 BCT子帧和 NCT 子帧承载不同的辅助信号 (例如 PSS/SSS和小区专用导频信号), 以使得用户设备可 以根据 BCT子帧和 NCT子帧各自的辅助信号搜索到他们。
再例如, 对于第二类混合载波, BCT 子帧上的广播信息可以指示这是一个非全 子帧工作的 BCT载波, BCT载波的小区标识, 以及可以进一步携带该 BCT工作的子 帧图案, 例如用 Bitmap的形式进行指示。 在本实施例中, BCT子帧上承载的这些信 息也放置在 Legacy用户 (如上述第一类用户和第二类用户) 不会读取的位置, 即这 些信息只能服务于有能力识别该载波为混合载波的用户, 且该信息不会影响 Legacy 用户在该 BCT载波上的使用。 对于第二类型混合载波, NCT子帧上的广播信息可以 指示这是一个非全子帧工作的 NCT载波, NCT载波的小区标识, 以及可以进一步携 带该 NCT工作的子帧图案, 例如用 Bitmap的形式进行指示。 同样的, NCT子帧上 的这些信息的放置不能妨碍上述第四类用户在这个 NCT上的工作。 在本实施例中, 以混合载波包含两种类型的载波为例,但本实施例并不以此作为 限制, 本实施例的方法同样适用于混合载波包含两种以上类型的载波的情况。
以下结合附图和具体实施例对本发明的方法和装置进行详细说明。
实施例 1
本发明实施例提供了一种载波转换方法。 图 1是该方法的流程图, 请参照图 1, 该方法包括:
步骤 101 : 基站向本小区的 UE发送载波转换指示消息, 通过所述载波转换指示 消息指示所述 UE本小区的载波类型即将改变;
步骤 102: 所述基站转换载波类型, 修改相应的系统信息的内容和 /或发送方式以 及公共信号的序列和 /或发送方式。
在步骤 101 中, 该载波转换指示消息可以通过 RRC信令承载, 但本实施例并不 以此作为限制, 通过该 RRC信令, 该基站可以通知本小区的用户, 本小区载波类型 即将发生变化, 例如本小区载波即将由载波类型 A转换为载波类型 3。 除此之外, 该 RRC信令还可以承载一些其他的相应的信息, 以便用户识别和处理。
步骤 101中, 如果当前载波和转换后的载波的小区标识发生了变化, 该载波转换 指示消息还可以携带小区新的标识, 也即转换后的载波的小区标识。此时, 基站和用 户可以预先约定好载波转换时机, 也即, 小区会在何时更换小区标识以及做出相应改 变,例如在用户收到该载波转换指示消息后的下一个帧的第一个子帧, 由此用户可以 根据约定好的载波转换时机在相应的时间点进行载波转换的相应处理。在另一个实施 方式中,可以通过该载波转换指示消息承载上述载波转换时机, 也即承载小区将在什 么时间点更换小区标识以及做出相应改变,例如延迟若干个子帧后, 由此用户可以根 据该载波转换时机在相应的时间点进行载波转换的相应处理。例如,用户在收到该载 波转换指示消息后,会在上述指定的时间点利用收到的新的小区标识识别小区系统信 息, 接收小区公共信号, 下行控制信道, 以及变更自己的上行信号中与小区标识有关 的扰码序列以及参考信号序列等载波转换的相应处理。以上载波转换的相应处理只是 举例说明, 本实施例并不以此作为限制。
在步骤 101中, 如果当前载波和转换后的载波的小区标识没有发生变化, 则该载 波转换指示消息可以不携带小区标识, 也可以携带小区标识,本实施例并不以此作为 限制。 在步骤 101中, 如果转换后的载波为混合载波, 则该载波转换指示消息还可以携 带承载 BCT的子帧的子帧图案和 /或承载 NCT的子帧的子帧图案, 以便基站在此承 载 BCT的子帧上或者承载 NCT的子帧上调度相应的用户。
在步骤 102中, 在通知了 UE载波类型即将发生变化之后, 该基站即可转换载波 类型, 例如修改相应的系统信息的内容和 /或发送方式以及公共信号的序列和 /或发送 方式。其中, 由于载波类型转换的场景不同, 需要修改的系统信息和公共信号的内容 也不相同, 具体将结合载波类型转换的不同场景在以下进行详细说明。
在本实施例的一个实施方式中, 如果转换后的载波为混合载波, 则该基站还要停 止在承载不支持 UE接入的载波的子帧上调度该 UE。例如, 对于从 BCT转换为混合 载波的情况, 对于第一类用户和第二类用户, 由于其不支持 NCT, 则基站要停止在 该混合载波的承载 NCT的子帧上调度这两类用户。
在本实施例的另一个实施方式中, 如果转换后的载波为混合载波, 并且 UE仅支 持所述混合载波中的一种,则该基站还要停止在承载不支持 UE接入的载波的子帧上 调度该 UE。例如, 对于从 NCT转换为混合载波的情况, 对于第四类用户, 由于其仅 支持 NCT, 则基站要停止在该混合载波的承载 BCT的子帧上调度这类用户。
在本实施例的另一个实施方式中, 如果转换后的载波为混合载波, 并且该混合载 波上的两个载波的小区标识相同 (简称为小区标识相同的混合载波), 并且用户支持 该混合载波上的所有载波, 则该用户可以以该混合载波作为其服务小区, 该基站可以 在该混合载波中的任意子帧上调度该用户。
在本实施例的另一个实施方式中, 如果转换后的载波为混合载波, 并且该混合载 波上的两个载波的小区标识不同 (简称为小区标识不同的混合载波), 并且用户支持 该混合载波上的所有载波, 则用户可以仅以其中任何一个载波作为其服务小区, 也可 以以这两个载波作为其服务小区。当用户以这两个载波作为其服务小区时, 该用户实 现了与两个小区的双连接 ( dual-connectivity)。 如果用户以其中一个载波作为其服务 小区, 则该基站在确定了该用户的服务小区之后,可以在该用户的服务小区对应的载 波所在的子帧上调度该用户。如果用户以这两个载波作为其服务小区, 则基站可以以 时分复用的方式, 在该混合载波的各个载波所在的子帧上调度该用户。
在本实施例中, 为了保证载波转换后, 本小区内的用户都能被服务, 基站可以在 向本小区的用户发送上述载波转换指示消息之前, 先根据本小区即将改变的载波类 型, 将即将不能为其提供服务的用户切换到能够为其提供服务的载波。其中, 具体的 切换方法与现有标准相同, 在此不再赘述。
通过本实施例的方法,可以实现 BCT向 NCT的转换, NCT向 BCT的转换, BCT 向混合载波的转换, 以及 NCT向混合载波的转换。
在从 BCT到 NCT进行转换的实施方式中, 如果小区标识没有发生变化, 则基站 可以先将上述第一类和第二类用户切换出去,原因在于第一类用户和第二类用户都不 支持 NCT, 再按照图 1的方法进行载波转换。 在该实施方式中, 对应步骤 101, 该基 站向本小区用户(这里的本小区用户为仍然可以继续为其服务的用户)发送所述载波 转换指示消息。 在该实施方式中, 对应步骤 102, 该基站可能在新的 NCT载波上发 送同步信号 (例如 PSS/SSS) 和 /或小区专用信号 (例如小区专用导频信号) 和 /或相 应系统信息。
在从 BCT到 NCT进行转换的实施方式中, 如果小区标识发生变化, 则基站同样 可以先将上述第一类和第二类用户切换出去, 再按照图 1的方法进行载波转换。在该 实施方式中, 对应步骤 101, 该基站向本小区用户, 也即仍然可以继续为其服务的用 户发送所述载波转换指示消息, 该载波转换指示消息可以包含新载波的小区标识。在 该实施方式中, 对应步骤 102, 该基站可能在新的 NCT载波上发送与新小区标识一 致的同步信号 (例如 PSS/SSS ) 和 /或小区专用信号 (例如小区专用导频信号) 和 /或 相应系统信息。
在从 NCT到 BCT进行转换的实施方式中, 如果小区标识没有发生变化, 则基站 可以先将上述第四类用户切换出去, 原因在于这类用户不支持 BCT, 再按照图 1 的 方法进行载波转换。 在该实施方式中, 对应步骤 101, 该基站向本小区用户, 也即仍 然可以继续为其服务的用户发送所述载波转换指示消息。在该实施方式中,对应步骤 102, 该基站可能在新的 BCT载波上发送同步信号(例如 PSS/SSS)和 /或小区专用信 号 (例如小区专用导频信号) 和 /或相应系统信息。
在从 NCT到 BCT进行转换的实施方式中, 如果小区标识发生变化, 则基站同样 可以先将上述第四类用户切换出去, 再按照图 1的方法进行载波转换。在该实施方式 中, 对应步骤 101, 该基站向本小区用户, 也即仍然可以继续为其服务的用户发送所 述载波转换指示消息, 该载波转换指示消息可以包含新载波的小区标识。在该实施方 式中, 对应步骤 102, 该基站可能在新的 BCT载波上发送与新小区标识一致的同步 信号 (例如 PSS/SSS) 和 /或小区专用信号 (例如小区专用导频信号) 和 /或相应系统 信息。
在从 BCT到第一类混合载波进行切换的实施方式中, 小区标识没有发生变化, 则基站可以先将上述第一类用户切换出去, 原因在于第一类用户不支持 NCT, 且不 能以子帧图案的方式对 BCT载波进行 RRM测量, 再按照图 1的方法进行载波转换。 在该实施方式中, 对应步骤 101, 该基站向本小区用户, 也即仍然可以继续为其服务 的、且混合载波对其是非透明的用户发送所述载波转换指示消息, 由于仍然可以继续 为其服务的、且混合载波对其是非透明的用户可能是第三类或第四类用户, 则该载波 转换指示消息可以包含承载 BCT的子帧的子帧图案和 /或承载 NCT的子帧的子帧图 案。 在该实施方式中, 对应步骤 102, 该基站可能在新的 NCT载波上发送单独的同 步信号 (例如 PSS/SSS) 和 /或小区专用信号 (例如小区专用导频信号) 和 /或系统信 息, NCT系统信息中可以指示这是一个混合载波。 可选的, 该基站还可能修改 BCT 载波系统信息, 使其可以指示这是一个混合载波。在该实施方式中, 非透明是指用户 知道转换后的载波是一个混合载波, 下同。
在从 BCT到第二类混合载波进行转换的实施方式中, 小区标识发生了变化, 则 基站可以先将上述第一类用户切换出去, 原因在于第一类用户不支持 NCT, 且不能 以子帧图案的方式对 BCT载波进行 RRM测量, 再按照图 1的方法进行载波转换。 在该实施方式中, 对应步骤 101, 该基站向本小区用户, 也即仍然可以继续为其服务 的、 且混合载波对其是非透明的用户发送所述载波转换指示消息。在这里, 由于仍然 可以继续为其服务的、 且混合载波对其是非透明的用户可能是第三类或第四类用户, 则该载波转换指示消息可以包含承载 BCT的子帧的子帧图案和 /或承载 NCT的子帧 的子帧图案。 另外, 由于小区标识发生了变化, 该载波转换指示消息还可以包含新的 NCT载波的小区标识。 在该实施方式中, 对应步骤 102, 该基站可能在新的 NCT载 波上发送单独的同步信号 (例如 PSS/SSS ) 和 /或小区专用信号 (例如小区专用导频 信号) 和 /或系统信息, NCT系统信息中可以指示这是一个混合载波。 可选的, 该基 站还可能修改 BCT载波系统信息, 使其可以指示这是一个混合载波。
在从 NCT到第一类混合载波进行转换的实施方式中, 小区标识没有发生变化, 由于当前载波为 NCT, 则被该 NCT服务的用户不包含第一类和第二类用户, 此时, 基站可以直接按照图 1的方法进行载波转换。 在该实施方式中, 对应步骤 101, 该基 站向本小区的用户, 也即仍然可以继续为其服务的、且混合载波对其是非透明的用户 发送所述载波转换指示消息。在这里, 由于仍然可以继续为其服务的、 且混合载波对 其是非透明的用户可能是第三类或第四类用户,则该载波转换指示消息可以包含承载 BCT的子帧的子帧图案和 /或承载 NCT的子帧的子帧图案。在该实施方式中,对应步 骤 102, 该基站可能在新的 BCT载波上发送单独的同步信号 (例如 PSS/SSS) 和 /或 小区专用信号 (例如小区专用导频信号) 和 /或系统信息。 可选地, 可以在 BCT载波 的系统信息中指示, 这是一个混合载波。 可选的, 该基站还可能修改 NCT载波系统 信息, 使其可以指示这是一个混合载波。
在从 NCT到第二类混合载波进行转换的实施方式中, 小区标识发生变化, 同样 由于当前载波为 NCT, 则被该 NCT服务的用户不包含第一类和第二类用户, 此时, 基站可以直接按照图 1的方法进行载波转换。 在该实施方式中, 对应步骤 101, 该基 站向本小区的用户, 也即仍然可以继续为其服务的、且混合载波对其是非透明的用户 发送所述载波转换指示消息。在这里, 由于仍然可以继续为其服务的、 且混合载波对 其是非透明的用户可能是第三类或第四类用户,则该载波转换指示消息可以包含承载 BCT的子帧的子帧图案和 /或承载 NCT的子帧的子帧图案。另外, 由于小区标识发生 了变化, 该载波转换指示消息还可以包含新的 NCT载波和 /或 BCT载波的小区标识。 在该实施方式中, 对应步骤 102, 该基站可能在新的 BCT载波上发送单独的同步信 号 (例如 PSS/SSS) 和 /或小区专用信号 (例如小区专用导频信号) 和 /或系统信息。 可选地, 可以在 BCT载波的系统信息中指示, 这是一个混合载波。 可选的, 该基站 还可能修改混合载波系统信息, 使其可以指示这是一个混合载波。
在从第一类混合载波到 BCT进行转换的实施方式中, 小区标识没有发生变化, 则基站可以先将上述第四类用户切换出去, 原因在于第四类用户不支持 BCT, 再按 照图 1的方法进行载波转换。 在该实施方式中, 对应步骤 101, 该基站向仍然可以继 续为其服务的、且混合载波对其是非透明的用户发送所述载波转换指示消息。在该实 施方式中, 对应步骤 102, 可选的, 基站可以对 BCT的系统信息进行修改, 去掉指 示混合载波的部分。
在从第一类混合载波到 NCT进行转换的实施方式中, 小区标识没有发生变化。 考虑到被第一类混合载波服务的用户只可能是第二类,第三类以及第四类用户, 则基 站可以先将上述第二类用户切换出去, 再按照图 1的方法进行载波转换。在该实施方 式中, 对应步骤 101, 该基站向仍然可以继续为其服务的、 且混合载波对其是非透明 的用户发送所述载波转换指示消息。 在该实施方式中, 对应步骤 102, 基站可以对 NCT的系统信息进行修改, 去掉指示混合载波的部分。
在从第二类混合载波到 BCT进行转换的实施方式中, 小区标识发生变化, 则由 于第四类用户不支持 BCT, 基站可以先将上述第四类用户切换出去, 再按照图 1 的 方法进行载波转换。 在该实施方式中, 对应步骤 101, 该基站向仍然可以继续为其服 务的、且混合载波对其是非透明的用户发送所述载波转换指示消息。在该实施方式中, 对应步骤 102, 可选的, 基站可以对 BCT的系统信息进行修改, 去掉指示混合载波 的部分。
在从第二类混合载波到 NCT进行转换的实施方式中, 小区标识没有发生变化。 考虑到被第一类混合载波服务的用户只可能是第二类,第三类以及第四类用户, 则基 站可以先将上述第二类用户切换出去, 再按照图 1的方法进行载波转换。在该实施方 式中, 对应步骤 101, 该基站向仍然可以继续为其服务的、 且混合载波对其是非透明 的用户发送所述载波转换指示消息。 在该实施方式中, 对应步骤 102, 基站可以对 NCT的系统信息进行修改, 去掉指示混合载波的部分。
通过本发明实施例的载波转换方法, 能更好的发挥 BCT和 NCT的优点, 实现载 波服务用户的平稳过渡。
实施例 2
本发明实施例还提供了一种载波转换方法,该方法是对应实施例 1的方法的用户 侧的处理。 图 2是该方法的流程图, 请参照图 2, 该方法包括:
步骤 201 : 用户设备在接收到基站发送的载波转换指示消息后, 根据预先约定或 者所述载波转换指示消息携带的时间指示信息确定载波转换时间点;
步骤 202: 所述用户设备在确定的载波转换时间点进行载波转换。
在步骤 201中, 如实施例 1所述, 基站和用户可以预先约定载波转换时间点, 也 可以通过载波转换指示消息携带时间指示信息,通过该时间指示信息指示载波转换时 间点, 由此用户可以在确定的载波转换时间点进行载波转换。
在步骤 202中, 用户设备可以在所述载波转换时间点利用所述载波转换指示消息 所包含的小区标识(载波转换指示消息携带有新小区的小区标识或者原小区的小区标 识, 小区标识发生变化或没有发生变化)或者利用原小区标识(载波转换指示消息没 有携带小区标识, 小区标识没有发生变化), 识别小区系统消息、 接收小区公共信号 和下行控制信号、以及变更所述用户设备的上行信号中与小区标识有关的扰码序列以 及参考信号序列等等。 在此不再赘述。
在本实施例的一个实施方式中, 如果转换后的载波为小区标识相同的混合载波, 并且所述用户设备支持所述混合载波中的所有载波,则所述用户设备可以以所述混合 载波作为其服务小区, 此时, 基站可以在该混合载波的任意子帧上调度该用户。
在本实施例的另外一个实施方式中, 如果所述转换后的载波为小区标识不同的混 合载波, 并且所述用户设备支持所述混合载波中的所有载波, 则所述用户设备可以以 所述混合载波的两个载波作为其服务小区, 实现与该两个载波对应的小区的双连接, 基站以时分复用的方式在两个载波上调度该用户;所述用户设备也可以以所述混合载 波中的其中一个载波作为其服务小区, 仅使用该载波所在的子帧,基站确定了该用户 的服务小区后, 在该小区对应的载波所在的子帧调度该用户。
在本实施例中, 如果转换后的载波为混合载波, 对于无法识别混合载波的 UE, 在一个实施方式中, 如果当前载波在变为混合载波之前, 该当前载波已经是该 UE的 服务小区, 则该 UE 直接将该混合载波作为其服务小区, 只要基站避免在该不支持 UE接入的子帧调度该 UE即可; 在另一个实施方式中, 如果该 UE的服务小区不是 使用该混合载波的小区, 则 UE的服务小区可以先配置 UE以子帧图案的方式对该混 合子帧中该 UE所支持的载波进行测量, 而后, 根据测量结果, 将满足条件的 UE切 换进该混合载波, 使该 UE以该使用混合载波的小区作为其服务小区, 此时, 新的小 区的基站避免在该不支持 UE接入的子帧调度该 UE; 在另外一个实施方式中, 如果 该 UE在使用该混合载波的小区的覆盖范围内开机, 则 UE以正常载波的方式发现和 测量该小区, 如果测量结果满足接入条件, UE可以顺利接入该小区, 此时, 该小区 的基站避免在该不支持 UE接入的子帧调度该 UE即可, 在该实施方式中, UE支持 的载波的系统信息中承载的可用的发送 P ACH preamble的资源均在用来承载该载波 的子帧处。
在本实施例中, 关于载波转换指示消息, 已经在实施例 1做了详细说明, 在此不 再赘述。
通过本发明实施例的载波转换方法, 能更好的发挥 BCT和 NCT的优点, 实现载 波服务用户的平稳过渡。 实施例 3
本发明实施例还提供了一种载波转换方法。 图 3是该方法的流程图,请参照图 3, 该方法包括:
步骤 301 : 基站将本小区的所有 UE切换到可以为所述 UE提供服务的载波; 其中, 具体的切换方法与现有标准相同, 在此不再赘述。
步骤 302: 所述基站转换载波类型, 修改相应的系统信息的内容和 /或发送方式以 及公共信号的序列和 /或发送方式。
在本实施例中, 以当前载波外可以为本小区的 UE提供服务的载波作为过渡, 在 转换载波类型之前, 先将所有 UE切换出去, 再进行载波类型的转换。 而后, 各个可 以为该 UE提供服务的基站 (也即为该 UE提供服务的载波所对应的基站, 为了方便 说明和理解, 下面简称为过渡载波)再视实际情况将这些 UE切换回来。 关于该过渡 载波对应的基站的处理, 将在另外的实施例中加以说明。
在本实施例中, 对于为了进行载波转换而切换出去、 并且载波转换之后又切换到 转换后的载波的 UE, 可以在转换后的载波上工作。
在一个实施方式中, 如果转换后的载波为混合载波, 并且切换到所述转换后的载 波的 UE仅支持所述混合载波中的一种, 则所述基站停止在承载不支持 UE接入的载 波的子帧上调度该 UE。例如第一类用户和第二类用户不支持 NCT, 则基站在转换到 混合载波后,停止在承载 NCT的子帧上调度该 UE,再例如,第四类用户不支持 BCT, 则基站在转换到混合载波后, 停止在承载 BCT的子帧上调度该 UE。
在另一个实施方式中, 如果转换后的载波为小区标识相同的混合载波, 并且所述
UE支持所述混合载波中的所有载波, 则 UE可以以该混合载波作为其服务小区, 所 述基站可以在所述混合载波中的任意子帧上调度所述 UE。
在另一个实施方式中, 如果所述转换后的载波为小区标识不同的混合载波, 并且 所述 UE支持所述混合载波中的所有载波, 则 UE可以以其中一个载波作为其服务小 区, 此时, 所述基站确定所述 UE的服务小区, 在所述 UE的服务小区对应的载波所 在的子帧上调度所述 UE; UE 也可以以这两个载波作为其服务小区, 以时分复用的 方式实现与这两个小区的双连接, 此时, 所述基站以时分复用的方式, 在所述混合载 波的各个载波所在的子帧上调度所述 UE。
通过本实施例的方法,可以实现 BCT向 NCT的转换, NCT向 BCT的转换, BCT 向混合载波的转换, 以及 NCT向混合载波的转换。
在从 BCT向 NCT进行转换的实施方式中,如果小区标识不变,则对应步骤 302, 基站可以在新的 NCT载波上发送同步信号 (例如 PSS/SSS) 和 /或小区专用信号 (例 如小区专用导频信号) 和 /或相应系统信息。
在从 BCT向 NCT进行转换的实施方式中,如果小区标识改变,则对应步骤 302, 基站可以在新的 NCT载波上发送与新小区标识一致的同步信号 (例如 PSS/SSS) 和 / 或小区专用信号 (例如小区专用导频信号) 和 /或相应系统信息。
在从 NCT到 BCT进行转换的实施方式中,如果小区标识不变,则对应步骤 302, 基站可以在新的 BCT载波上发送同步信号 (例如 PSS/SSS) 和 /或小区专用信号 (例 如小区专用导频信号) 和 /或相应系统信息。
在从 NCT到 BCT进行转换的实施方式中,如果小区标识改变,则对应步骤 302, 基站可以在新的 BCT载波上发送与新小区标识一致的同步信号 (例如 PSS/SSS) 和 / 或小区专用信号 (例如小区专用导频信号) 和 /或相应系统信息。
在从 BCT到第一类混合载波进行转换的实施方式中, 小区标识不变, 则对应步 骤 302, 基站可以在新的 NCT载波上发送单独的同步信号 (例如 PSS/SSS) 和 /或小 区专用信号 (例如小区专用导频信号) 和 /或系统信息。 可选的, NCT系统信息中可 以指示这是一个混合载波。 可选的, 该基站还可以修改 BCT载波系统信息, 使其可 以指示这是一个混合载波。
在从 BCT到第二类混合载波进行转换的实施方式中, 小区标识改变, 则对应步 骤 302, 基站可以在新的 NCT载波上发送单独的同步信号 (例如 PSS/SSS) 和 /或小 区专用信号 (例如小区专用导频信号) 和 /或系统信息。 可选的, NCT系统信息中可 以指示这是一个混合载波。 可选的, 该基站还可以修改 BCT载波系统信息, 使其可 以指示这是一个混合载波。
在从 NCT到第一类混合载波进行转换的实施方式中, 小区标识不变, 则对应步 骤 302, 基站可以在新的 BCT载波上发送单独的同步信号 (例如 PSS/SSS) 和 /或小 区专用信号 (例如小区专用导频信号) 和 /或系统信息。 可选的, 可以在 BCT载波的 系统信息中指示, 这是一个混合载波。 可选的, 该基站还可以修改 NCT载波系统信 息, 使其可以指示这是一个混合载波。
在从 NCT到第二类混合载波进行转换的实施方式中, 小区标识改变, 则对应步 骤 302, 基站可以在新的 BCT载波上发送单独的同步信号 (例如 PSS/SSS) 和 /或小 区专用信号 (例如小区专用导频信号) 和 /或系统信息。 可选的, 可以在 BCT载波的 系统信息中指示, 这是一个混合载波。 可选的, 该基站还可以修改 NCT载波系统信 息, 使其可以指示这是一个混合载波。
在从第一类混合载波到 BCT进行转换的实施方式中, 小区标识不变, 则对应步 骤 302, 可选的, 基站可以对 BCT的系统信息进行修改, 去掉指示混合载波的部分。
在从第一类混合载波到 NCT进行转换的实施方式中, 小区标识不变, 则对应步 骤 302, 可选的, 基站可以对 NCT的系统信息进行修改, 去掉指示混合载波的部分。
在从第二类混合载波到 BCT进行转换的实施方式中, 小区标识改变, 则对应步 骤 302, 可选的, 基站可以对 BCT的系统信息进行修改, 去掉指示混合载波的部分。
在从第二类混合载波到 NCT进行转换的实施方式中, 小区标识改变, 则对应步 骤 302, 可选的, 基站可以对 NCT的系统信息进行修改, 去掉指示混合载波的部分。
通过本发明实施例的载波转换方法, 能更好的发挥 BCT和 NCT的优点, 实现载 波服务用户的平稳过渡。
实施例 4
本发明实施例提供了一种载波转换方法,该方法是对应实施例 3的方法的过渡载 波的处理。 图 4是该方法的流程图, 请参照图 4, 该方法包括:
步骤 401 : 基站向 UE发送测量配置消息, 指示所述 UE对指定载波进行测量; 其中, 基站可以通过 RRC信令承载该测量配置消息, 也即通过该 RRC信令配置 该 UE测量指定载波。
其中, 对应实施例 3的方法, 该基站可以配置该 UE对实施例 2的基站转换后的 载波进行测量。 其中, 该 UE可以是实施例 3的基站切换到本实施例的基站的 UE, 并且该 UE支持上述转换后的载波; 该 UE也可以是本实施例的基站根据自己的策略 所决定的其小区内的 UE, 本实施例并不以此作为限制。
步骤 402:所述基站根据所述 UE对所述指定载波的测量报告决定是否将所述 UE 切换到所述指定载波;
其中, 具体的决定方法可以参照现有标准, 在此不再赘述。
步骤 403:所述基站在根据测量报告确定可以将所述 UE切换到所述指定载波时, 向所述 UE发送切换命令和切换辅助信息, 以将所述 UE切换到所述指定载波。 其中, 为了加速该 UE切换回实施例 3的基站转换后的载波, 本实施例的基站可 以向该 UE提供一些切换所需的辅助信息 (在本实施例中, 称为切换辅助信息), 该 切换辅助信息可以包含在上述切换命令中,通过上述切换命令承载, 也可以通过其他 消息承载, 本实施例并不以此作为限制。对于该辅助信息的具体实施方式, 将在下面 的实施例中进行说明。
在本实施例中,对应实施例 3的不同的切换场景, 步骤 401所配置的内容有所不 同。
在从 BCT 向 NCT进行转换的实施方式中, 不管小区标识是否改变, 对应步骤 401,基站可以通过上述 RRC信令配置 UE采用 NCT的方式测量上述转换后的载波。
在从 NCT到 BCT进行转换的实施方式中, 不管小区标识是否改变, 对应步骤
401, 基站可以通过上述 RRC信令配置 UE采用 BCT的方式测量上述转换后的载波。
在从 BCT或 NCT到第一类混合载波或第二类混合载波进行转换的实施方式中, 对应步骤 401, 基站可以将用来承载 BCT的子帧的子帧图案配置给该 UE, 以便 UE 采用子帧图案用 BCT 方式测量上述转换后的载波; 和 /或, 基站也可以将用来承载 NCT的子帧的子帧图案配置给该 UE, 以便 UE采用子帧图案用 NCT方式测量转换 后的载波。
在从第一类混合载波或第二类混合载波到 BCT进行转换的实施方式中, 对应步 骤 401, 基站可以通过上述 RRC信令配置 UE采用 BCT的方式测量转换后的载波。
在从第一类混合载波或第二类混合载波到 NCT进行转换的实施方式中, 对应步 骤 401, 基站可以通过上述 RRC信令配置 UE采用 NCT的方式测量转换后的载波。
通过本发明实施例的载波转换方法, 能更好的发挥 BCT和 NCT的优点, 实现载 波服务用户的平稳过渡。
实施例 5
本实施例还提供了一种载波转换方法, 该方法对应实施例 4的 UE侧的处理。 图 5是该方法的流程图, 请参照图 5, 该方法包括:
步骤 501 : 用户设备接收基站发送的测量配置信息, 根据所述测量配置信息对指 定的载波进行测量;
其中, 该测量配置信息可以通过 RRC信令承载, 如实施例 4所述, 在此不再赘 述。 其中, 测量完毕后, 该 UE会将测量报告反馈给该基站, 基站据此决定是否将该 UE切换到上述指定载波。
步骤 502: 所述用户设备在接收到所述基站发送的切换命令和切换辅助信息后, 根据所述切换辅助信息切换到所述指定载波。
其中, 如果基站决定将该 UE切换到上述指定载波, 则向本实施例的用户设备发 送切换命令, 为了加快切换过程, 可以在该切换命令中携带切换辅助信息, 也可以在 其他消息中携带该切换辅助信息, 由此,用户设备可以利用该切换辅助信息切换到该 基站指定的载波上, 由此加快了切换过程。
其中, 对于该切换辅助信息将在以下的实施例中进行详细说明。
通过本发明实施例的载波转换方法, 能更好的发挥 BCT和 NCT的优点, 实现载 波服务用户的平稳过渡。
实施例 6
本发明实施例提供了一种载波转换方法。 图 6是该方法的流程图, 请参照图 6, 该方法包括:
步骤 601 : 基站停止在当前载波的一部分子帧上调度用户设备;
步骤 602: 所述基站转换所述一部分子帧的载波类型, 修改相应的系统信息的内 容和 /或发送方式以及公共信号的序列和 /或发送方式;
步骤 603: 所述基站将本小区内能切换到转换后的载波的用户设备切换到所述转 换后的载波;
步骤 604: 所述基站将所述当前载波的除上述一部分子帧以外的其他子帧的载波 类型转换为所述转换后的载波。
在本实施例中, 如果从一个 BCT载波到另一个 NCT载波的切换, 或者反过来, 可能发生小区标识的变化, 则切换过程中可能不得不将所有 UE切换至其它载波, 再 将它们切换回来。在本实施例中, 以混合载波作为一个过渡状态, 如此可以避免对其 它小区影响, 在本小区内实现 UE从旧载波到新载波的切换。
在本实施例的一个实施方式中, 为了避免本小区的某些 UE不支持转换后的载波 而无法继续为这部分 UE服务, 在步骤 601之前, 该基站可以先根据本小区即将改变 的载波类型, 将即将不能为其提供服务的 UE切换到能够为其提供服务的载波。 具体 的切换方法可以参考现有标准, 在此不再赘述。 在步骤 601 中, 停止在当前载波的一部分子帧上调度 UE, 这样做的目的是为了 先对这一部分子帧进行载波转换。在一个实施方式中,对于支持以子帧图案方式进行 RRM测量的高版本 UE,该基站可以向该 UE发送包含承载除上述一部分子帧以外的 其他子帧的子帧图案的配置信息, 以便所述 UE根据所述子帧图案, 以子帧图案的方 式进行 RRM测量。 其中, 该配置信息可以通过 RRC信令来实现。
在步骤 602中, 系统信息和公共信号的修改可以参考实施例 1, 在此不再赘述。 在步骤 603中,所述基站可以先通过 RRC信令配置 UE以子帧图案的方式测量转 换后的载波,例如向本小区内的用户设备发送载波测量配置信息,指示所述用户设备 对转换后的载波进行测量, 再根据 UE对转换后的载波的测量结果决定是否将该 UE 切换到上述转换后的载波。其中,所述基站将本小区内不能切换到所述转换后的载波 的用户设备切换到能为其提供服务的载波。并将本小区内能切换到转换后的载波的用 户设备切换到所述转换后的载波。
在步骤 603中, 与实施例 4类似, 该基站也可以向所述 UE发送切换辅助信息, 以便所述用户设备根据所述切换辅助信息切换到所述转换后的载波。 由此,可以计算 UE的切换。 另外, 该切换辅助信息的实施方式将在以下的实施例中进行说明。
在步骤 603中, 同样对于支持以子帧图案方式进行工作的高版本 UE, 所述基站 可以向所述用户设备发送包含承载转换后的载波的子帧的子帧图案的配置信息,以便 所述用户设备根据所述子帧图案, 以子帧图案的方式工作 (例如, UE仅在承载了其 所接入的载波的子帧监测 PDCCH (Physical Downlink Control Channel,物理下行控制 信道); 或者如果未对 ePDCCH (enhanced-PDCCH, 增强的物理下行控制信道)进行 单独配置, UE仅在承载了其所接入的载波的子帧监测 ePDCCH)。其中, 该配置信息 可以通过切换过程的消息承载, 例如在配置切换信息中或者在随机接入过程的消息 2 中承载, 本实施例并不以此作为限制。 由此, 高版本的 UE可以工作在转换后的载波 上。
在本实施例中, 在所述基站转换所述一部分子帧的载波类型之后, 所述基站可以 在所述一部分子帧调度用户设备。例如, 该基站可以向所述用户设备发送包含承载转 换后的载波的子帧的子帧图案的配置信息, 以便所述用户设备根据所述子帧图案, 以 子帧图案的方式工作。
在本实施例中, 在所述基站将所述其他子帧转换为所述转换后的子帧之后, 所述 基站可以在所有子帧上调度用户设备。此时,该基站可以向本小区的用户设备发送通 知消息, 通知所述用户设备其可能在任意子帧被调度。 由此, 对于支持以子帧图案方 式工作的高版本 UE, 可以停止其以子帧图案的方式工作。
通过本实施例的方法, 可以实现 BCT向 NCT的转换(小区标识改变) 以及 NCT 向 BCT的转换 (小区标识改变)。
在从 BCT到 NCT进行转换的实施方式中, 如果小区标识改变, 则基站可能先将 第一类用户和第二类用户切换出去, 原因在于, 第一类用户和第二类用户都不支持 NCT。 此后, 对应步骤 602, 该基站可以在新的 NCT载波上发送与新小区标识一致 的同步信号 (例如 PSS/SSS) 和 /或小区专用信号 (例如小区专用导频信号) 和 /或相 应系统信息。
在从 NCT到 BCT进行转换的实施方式中, 如果小区标识改变, 则基站可能先将 第四类用户切换出去, 原因在于, 第四类用户都不支持 BCT。 此后, 对应步骤 602, 该基站可以在新的 BCT载波上发送与新小区标识一致的同步信号 (例如 PSS/SSS) 和 /或小区专用信号 (例如小区专用导频信号) 和 /或相应系统信息。
在本实施例中, 对应本实施例的基站侧的 UE侧的处理, 可以通过实施例 5的方 法来实现, 在此不再赘述。
通过本发明实施例的载波转换方法, 能更好的发挥 BCT和 NCT的优点, 实现载 波服务用户的平稳过渡。
实施例 7
本发明实施例提供了一种载波转换方法。 图 7是该方法的流程, 请参照图 7, 该 方法包括:
步骤 701 : 基站向用户设备发送切换命令和切换辅助信息, 以便所述用户设备根 据所述切换辅助信息将当前的载波类型转换为所述基站指定的载波类型。
在本实施例中, 当基站决定将 UE切换到其他该 UE支持的载波对应的小区时, 例如实施例 4的场景或者实施例 6的场景,该基站通过向该 UE发送一些切换辅助信 息, 加速该 UE的切换。
在本实施例中, 该切换辅助信息可以是与下行同步有关的信息, 也可以是与上行 随机接入有关的信息,还可以是当前的载波与转换后的载波是否处于同一状态的指示 信息。 或者是上述信息的任何组合, 本实施例并不以此作为限制。 其中, 对应实施例 4和 6的场景, 可以通过上述与下行同步有关的信息指示 UE 转换后的载波的下行定时与当前载波 (转换前的载波) 相同, 由此加速 UE的切换, 例如辅助信息能够使得 UE快速定位同步信号的位置。
其中,对应实施例 4和 6的场景,可以通过上述与上行随机接入有关的信息指示 UE在转换后的载波中仍然可以重用转换前的载波的 TA( Timing Advance,时间提前), 以及在转换前的载波中使用的 C-RNTI (Cell Radio Network Temporary Identifier, 小 区无线网络临时标识), 由此, UE可以免去在目标载波(转换后的载波)中的随机接 入, 直接切换进入新载波。
其中, 在本实施例中, 还可以定义两个载波处于一种状态, 在该状态下, 两个载 波可以认为上下行定时均相同;或者,可以定义两个载波处于一种状态,在该状态下, UE可以不用进行随机接入, 在收到切换命令后直接从一个载波切换到另一个载波。 则对应实施例 4和 6的场景, 基站可以直接通知 UE, 转换前的载波和转换后的载波 是否处于上述状态, 当处于上述状态时, UE可以直接省去或加速下行同步和或上行 同步的过程, 或者直接切换进入目标载波。
通过本实施例的方法, 加速了 UE切换到新载波的过程。
实施例 8
本发明实施例还提供了一种载波转换方法,该方法是对应实施例 7的 UE侧的处 理, 请参照图 8, 该方法包括:
步骤 801 : 用户设备接收基站发送的切换命令和切换辅助信息;
步骤 801 : 所述用户设备根据所述切换辅助信息将当前的载波类型转换为所述基 站指定的载波类型。
在本实施例中, 该切换辅助信息已经在实施例 7做了说明, 其内容被合并于此, 在此不再赘述。
通过本实施例的方法, 加速了 UE切换到新载波。
本发明实施例还提供了一种基站, 如下面的实施例 9所述, 由于该基站解决问题 的原理与实施例 1的方法类似, 因此其具体的实施可以参照实施例 1的方法的实施, 内容相同之处不再重复说明。
实施例 9
本发明实施例提供了一种基站, 图 9是该基站的组成示意图, 请参照图 9, 该基 站包括:
发送单元 91, 其向本小区的 UE发送载波转换指示消息, 通过所述载波转换指示 消息指示所述 UE本小区的载波类型即将改变;
处理单元 92, 其转换载波类型, 修改相应的系统信息的内容和 /或发送方式以及 公共信号的序列和 /或发送方式。
在一个实施方式中, 该基站还包括:
切换单元 93,其在所述发送单元 91向本小区的 UE发送载波转换指示消息之前, 根据本小区即将改变的载波类型,将即将不能为其提供服务的 UE切换到能够为其提 供服务的载波。
在本实施例中, 所述载波转换指示消息包括即将改变的载波类型的小区标识和 / 或承载 BCT的子帧的子帧图案和 /或承载 NCT的子帧的子帧图案。
在一个实施方式中, 所述基站还包括:
第一调度单元 94, 其在转换后的载波是混合载波时, 停止在承载不支持 UE接入 的载波的子帧上调度该 UE。
在一个实施方式中, 所述基站还包括:
第二调度单元 95, 其在转换后的载波是混合载波, 并且 UE仅支持所述混合载波 中的一种时, 停止在承载不支持 UE接入的载波的子帧上调度该 UE。
在一个实施方式中, 所述基站还包括:
第三调度单元 96, 其在转换后的载波是小区标识相同的混合载波, 并且 UE支持 所述混合载波中的所有载波时, 在所述混合载波中的任意子帧上调度所述 UE。
在一个实施方式中, 所述基站还包括:
第四调度单元 97, 其在转换后的载波是小区标识不同的混合载波, 并且 UE支持 所述混合载波中的所有载波时, 确定所述 UE的服务小区, 在所述 UE的服务小区对 应的载波所在的子帧上调度所述 UE; 或者, 以时分复用的方式, 在所述混合载波的 各个载波所在的子帧上调度所述 UE。
通过本实施例的基站, 能更好的发挥 BCT和 NCT的优点, 实现载波服务用户的 平稳过渡。
本发明实施例还提供了一种用户设备, 如下面的实施例 10所述, 由于该用户设 备解决问题的原理与实施例 2的方法类似,因此其具体的实施可以参照实施例 2的方 法的实施, 内容相同之处不再重复说明。
实施例 10
本发明实施例提供了一种用户设备, 图 10是该用户设备的组成示意图, 请参照 图 10, 该用户设备包括:
确定单元 1001,其在接收到基站发送的载波转换指示消息后,根据预先约定或者 所述载波转换指示消息携带的时间指示信息确定载波转换时间点;
切换单元 1002, 其在所述确定单元 1001确定的载波转换时间点进行载波转换。 在一个实施方式中, 所述切换单元 1002在所述载波转换指示信息包括转换后的 载波的小区标识时,在所述载波转换时间点利用所述转换后的载波的小区标识, 识别 小区系统消息、接收小区公共信号和下行控制信号、 以及变更所述用户设备的上行信 号中与小区标识有关的扰码序列以及参考信号序列。
在一个实施方式中, 所述用户设备还包括:
第一选择单元 1003,其在所述转换后的载波为小区标识相同的混合载波,并且所 述用户设备支持所述混合载波中的所有载波时, 以所述混合载波作为其服务小区。
在一个实施方式中, 所述用户设备还包括:
第二选择单元 1004,其在所述转换后的载波为小区标识不同的混合载波,并且所 述用户设备支持所述混合载波中的所有载波时, 以所述混合载波作为其服务小区; 或 者, 以所述混合载波中的其中一个载波作为其服务小区。
通过本实施例的用户设备, 能更好的发挥 BCT和 NCT的优点, 实现载波服务用 户的平稳过渡。
本发明实施例还提供了一种基站, 如下面的实施例 11所述, 由于该基站解决问 题的原理与实施例 3的方法类似,因此其具体的实施可以参照实施例 3的方法的实施, 内容相同之处不再重复说明。
实施例 11
本发明实施例提供了一种基站, 图 11是该基站的组成示意图, 请参照图 11, 该 基站包括:
切换单元 1101, 其将本小区的所有 UE切换到可以为所述 UE提供服务的载波; 处理单元 1102, 其转换载波类型, 修改相应的系统信息的内容和 /或发送方式以 及公共信号的序列和 /或发送方式。 在一个实施方式中, 所述基站还包括:
第一调度单元 1003,其在转换后的载波为混合载波, 并且切换到所述转换后的载 波的 UE仅支持所述混合载波中的一种时, 停止在承载不支持 UE接入的载波的子帧 上调度该 UE。
在一个实施方式中, 所述基站还包括:
第二调度单元 1004, 其在转换后的载波为小区标识相同的混合载波, 并且所述 UE 支持所述混合载波中的所有载波时, 在所述混合载波中的任意子帧上调度所述 UE。
在一个实施方式中, 所述基站还包括:
第三调度单元 1005,其在所述转换后的载波为小区标识不同的混合载波,并且所 述 UE支持所述混合载波中的所有载波时, 确定所述 UE的服务小区, 在所述 UE的 服务小区对应的载波所在的子帧上调度所述 UE; 或者, 以时分复用的方式, 在所述 混合载波的各个载波所在的子帧上调度所述 UE。
通过本实施例的基站, 能更好的发挥 BCT和 NCT的优点, 实现载波服务用户的 平稳过渡。
本发明实施例还提供了一种基站, 如下面的实施例 12所述, 由于该基站解决问 题的原理与实施例 4的方法类似,因此其具体的实施可以参照实施例 4的方法的实施, 内容相同之处不再重复说明。
实施例 12
本发明实施例提供了一种基站, 图 12是该基站的组成示意图, 请参照图 12, 该 基站包括:
第一发送单元 1201, 其向 UE发送测量配置消息, 指示所述 UE对指定载波进行 判断单元 1202, 其根据所述 UE对所述指定载波的测量报告决定是否将所述 UE 切换到所述指定载波;
第二发送单元 1203, 其在所述判断单元 1202确定可以将所述 UE切换到所述指 定载波时, 向所述 UE发送切换辅助信息, 以将所述 UE切换到所述指定载波。
通过本实施例的基站, 能更好的发挥 BCT和 NCT的优点, 实现载波服务用户的 平稳过渡。 本发明实施例还提供了一种用户设备, 如下面的实施例 13所述, 由于该用户设 备解决问题的原理与实施例 5的方法类似,因此其具体的实施可以参照实施例 5的方 法的实施, 内容相同之处不再重复说明。
实施例 13
本发明实施例提供了一种用户设备, 图 13 是该用户设备的组成示意图, 请参照 图 13, 该用户设备包括:
测量单元 1301,其根据接收到的基站发送的测量配置信息,对所述基站指定的载 波进行测量;
切换单元 1302,其在接收到所述基站发送的切换命令和切换辅助信息后,根据所 述切换辅助信息切换到所述指定载波。
通过本实施例的用户设备, 能更好的发挥 BCT和 NCT的优点, 实现载波服务用 户的平稳过渡。
本发明实施例还提供了一种基站, 如下面的实施例 14所述, 由于该基站解决问 题的原理与实施例 6的方法类似,因此其具体的实施可以参照实施例 6的方法的实施, 内容相同之处不再重复说明。
实施例 14
本发明实施例提供了一种基站, 图 14是该基站的组成示意图, 请参照图 14, 该 基站包括:
第一调度单元 1401, 其停止在当前载波的一部分子帧上调度用户设备; 第一处理单元 1402,其转换所述一部分子帧的载波类型,修改相应的系统信息的 内容和 /或发送方式以及公共信号的序列和 /或发送方式;
第一切换单元 1403,其将本小区内能切换到转换后的载波的用户设备切换到所述 转换后的载波;
第二处理单元 1404,所述基站将所述当前载波的除上述一部分子帧以外的其他子 帧的载波类型转换为所述转换后的载波。
在一个实施方式中, 所述基站还包括:
第二切换单元 1405, 其在所述第一调度单元 1401停止在当前载波的一部分子帧 上调度用户设备之前,根据本小区即将改变的载波类型,将即将不能为其提供服务的 UE切换到能够为其提供服务的载波。 在一个实施方式中, 所述第一调度单元 1401包括:
第一发送模块 14011, 其向用户设备发送包含承载除上述一部分子帧以外的其他 子帧的子帧图案的配置信息, 以便所述用户设备根据所述子帧图案, 以子帧图案的方 式工作。
在一个实施方式中, 所述基站还包括:
第一发送单元 1406,其在所述第一切换单元将本小区内能切换到转换后的载波的 用户设备切换到所述转换后的载波之前,向本小区内的用户设备发送载波测量配置信 息, 指示所述用户设备对转换后的载波进行测量;
判断单元 1407,其根据所述用户设备对所述转换后的载波的测量报告决定是否将 所述用户设备切换到所述转换后的载波;
第三切换单元 1408,其将本小区内不能切换到所述转换后的载波的用户设备切换 到能为其提供服务的载波。
在一个实施方式中, 所述第一切换单元 1403包括:
第二发送模块 14031, 其向所述用户设备发送切换辅助信息, 以便所述用户设备 根据所述切换辅助信息切换到所述转换后的载波。
在一个实施方式中, 所述第一切换单元 1403包括:
第三发送模块 14032, 其向所述用户设备发送包含承载转换后的载波的子帧的子 帧图案的配置信息, 以便所述用户设备根据所述子帧图案, 以子帧图案的方式工作。
在一个实施方式中, 所述基站还包括:
第二调度单元 1409, 其在所述第一处理单元 1402转换所述一部分子帧的载波类 型之后, 在所述一部分子帧调度用户设备。
其中, 所述第二调度单元 1409包括:
第四发送模块 14091, 其向所述用户设备发送包含承载转换后的载波的子帧的子 帧图案的配置信息, 以便所述用户设备根据所述子帧图案, 以子帧图案的方式工作。
在一个实施方式中, 所述基站还包括:
第三调度单元 1410, 其在所述第二处理单元 1404将所述其他子帧转换为所述转 换后的子帧之后, 在所有子帧上调度用户设备。
在该实施方式中, 所述基站还包括:
第二发送单元 1411, 其向本小区的用户设备发送通知消息, 通知所述用户设备其 可能在任意子帧被调度。
通过本实施例的基站, 能更好的发挥 BCT和 NCT的优点, 实现载波服务用户的 平稳过渡。
本发明实施例还提供了一种基站, 如下面的实施例 15所述, 由于该基站解决问 题的原理与实施例 7的方法类似,因此其具体的实施可以参照实施例 7的方法的实施, 内容相同之处不再重复说明。
实施例 15
本发明实施例提供了一种基站, 图 15是该基站的组成示意图, 请参照图 15, 该 基站包括:
发送单元 1501,其向用户设备发送切换命令和切换辅助信息, 以便所述用户设备 根据所述切换辅助信息将当前的载波类型转换为所述基站指定的载波类型。
其中, 所述切换辅助信息包括:
与下行同步有关的信息; 和 /或
与上行随机接入有关的信息; 和 /或
当前的载波与转换后的载波是否处于同一状态的指示信息。
通过本实施例的基站, 能加速 UE的切换。
本发明实施例还提供了一种用户设备, 如下面的实施例 16所述, 由于该用户设 备解决问题的原理与实施例 8的方法类似,因此其具体的实施可以参照实施例 8的方 法的实施, 内容相同之处不再重复说明。
实施例 16
本发明实施例提供了一种用户设备, 图 16是该用户设备的组成示意图, 请参照 图 16, 该用户设备包括:
接收单元 1601, 其接收基站发送的切换命令和切换辅助信息;
转换单元 1602,其根据所述切换辅助信息将当前的载波类型转换为所述基站指定 的载波类型。
通过本实施例的用户设备, 能加速切换。
本发明实施例还提供了一种通信系统, 其中, 所述系统包括实施例 9所述基站和 实施例 10所述的 UE,或者包括实施例 11和 12所述的基站以及实施例 13所述的 UE, 或者包括实施例 14所述的基站和实施例 13所述的 UE,或者包括实施例 15所述的基 站和实施例 16所述的 UE。
本发明实施例还提供了一种计算机可读程序,其中当在基站中执行该程序时, 该 程序使得计算机在所述基站中执行实施例 1、 3、 4、 6或 7所述的载波转换方法。
本发明实施例还提供了一种存储有计算机可读程序的存储介质, 其中该计算机可 读程序使得计算机在基站中执行实施例 1、 3、 4、 6或 7所述的载波转换方法。
本发明实施例还提供了一种计算机可读程序, 其中当在终端设备中执行该程序 时, 该程序使得计算机在所述终端设备中执行实施例 2、 5或 8所述的载波转换方法。
本发明实施例还提供了一种存储有计算机可读程序的存储介质, 其中该计算机可 读程序使得计算机在终端设备中执行实施例 2、 5或 8所述的载波转换方法。
本发明以上的装置和方法可以由硬件实现, 也可以由硬件结合软件实现。本发明 涉及这样的计算机可读程序, 当该程序被逻辑部件所执行时, 能够使该逻辑部件实现 上文所述的装置或构成部件, 或使该逻辑部件实现上文所述的各种方法或步骤。逻辑 部件例如现场可编程逻辑部件、微处理器、计算机中使用的处理器等。本发明还涉及 用于存储以上程序的存储介质, 如硬盘、 磁盘、 光盘、 DVD、 flash存储器等。
以上结合具体的实施方式对本发明进行了描述,但本领域技术人员应该清楚,这 些描述都是示例性的, 并不是对本发明保护范围的限制。本领域技术人员可以根据本 发明的精神和原理对本发明做出各种变型和修改,这些变型和修改也在本发明的范围 内。

Claims

权 利 要 求 书
1、 一种载波转换方法, 其中, 所述方法包括:
基站向本小区的 UE发送载波转换指示消息, 通过所述载波转换指示消息指示所 述 UE本小区的载波类型即将改变;
所述基站转换载波类型,修改相应的系统信息的内容和 /或发送方式以及公共信号 的序列和 /或发送方式。
2、 根据权利要求 1 所述的方法, 其中, 所述载波转换指示消息包括即将改变的 载波类型的小区标识和 /或承载 BCT的子帧的子帧图案和 /或承载 NCT的子帧的子帧 图案。
3、 根据权利要求 1 所述的方法, 其中, 如果转换后的载波为小区标识相同的混 合载波, 并且 UE支持所述混合载波中的所有载波, 则所述方法还包括:
所述基站在所述混合载波中的任意子帧上调度所述 UE。
4、 根据权利要求 1 所述的方法, 其中, 如果转换后的载波为小区标识不同的混 合载波, 并且 UE支持所述混合载波中的所有载波, 则所述方法还包括:
所述基站确定所述 UE的服务小区, 在所述 UE的服务小区对应的载波所在的子 帧上调度所述 UE; 或者
所述基站以时分复用的方式, 在所述混合载波的各个载波所在的子帧上调度所述
UE。
5、 一种载波转换方法, 其中, 所述方法包括:
用户设备在接收到基站发送的载波转换指示消息后, 根据预先约定或者所述载波 转换指示消息携带的时间指示信息确定载波转换时间点;
所述用户设备在确定的载波转换时间点进行载波转换。
6、 根据权利要求 5所述的方法, 其中, 所述载波转换指示消息还包括转换后的 载波的小区标识, 则所述用户设备在确定的载波转换时间点进行载波转换的步骤包 括:
所述用户设备在所述载波转换时间点利用所述转换后的载波的小区标识, 识别小 区系统消息、接收小区公共信号和下行控制信号、 以及变更所述用户设备的上行信号 中与小区标识有关的扰码序列以及参考信号序列。
7、 根据权利要求 5所述的方法, 其中, 如果所述转换后的载波为小区标识相同 的混合载波,并且所述用户设备支持所述混合载波中的所有载波,则所述方法还包括: 所述用户设备以所述混合载波作为其服务小区。
8、 根据权利要求 5所述的方法, 其中, 如果所述转换后的载波为小区标识不同 的混合载波,并且所述用户设备支持所述混合载波中的所有载波,则所述方法还包括: 所述用户设备以所述混合载波作为其服务小区; 或者
所述用户设备以所述混合载波中的其中一个载波作为其服务小区。
9、 一种载波转换方法, 其中, 所述方法包括:
基站将本小区的所有 UE切换到可以为所述 UE提供服务的载波;
所述基站转换载波类型,修改相应的系统信息的内容和 /或发送方式以及公共信号 的序列和 /或发送方式。
10、 根据权利要求 9所述的方法, 其中, 如果所述转换后的载波为小区标识不同 的混合载波, 并且所述 UE支持所述混合载波中的所有载波, 则所述方法还包括: 所述基站确定所述 UE的服务小区, 在所述 UE的服务小区对应的载波所在的子 帧上调度所述 UE; 或者
所述基站以时分复用的方式, 在所述混合载波的各个载波所在的子帧上调度所述
UE。
11、 一种载波转换方法, 其中, 所述方法包括:
基站停止在当前载波的一部分子帧上调度用户设备;
所述基站转换所述一部分子帧的载波类型,修改相应的系统信息的内容和 /或发送 方式以及公共信号的序列和 /或发送方式;
所述基站将本小区内能切换到转换后的载波的用户设备切换到所述转换后的载 波;
所述基站将所述当前载波的除上述一部分子帧以外的其他子帧的载波类型转换 为所述转换后的载波。
12、 根据权利要求 11 所述的方法, 其中, 所述基站停止在当前载波的一部分子 帧上调度用户设备的步骤包括:
所述基站向用户设备发送包含承载除上述一部分子帧以外的其他子帧的子帧图 案的配置信息, 以便所述用户设备根据所述子帧图案, 以子帧图案的方式工作。
13、 根据权利要求 11 所述的方法, 其中, 所述基站将本小区内能切换到转换后 的载波的用户设备切换到所述转换后的载波的步骤包括:
所述基站向所述用户设备发送切换命令和切换辅助信息, 以便所述用户设备根据 所述切换辅助信息切换到所述转换后的载波。
14、 根据权利要求 11 所述的方法, 其中, 所述基站将本小区内能切换到转换后 的载波的用户设备切换到所述转换后的载波的步骤包括:
所述基站向所述用户设备发送包含承载转换后的载波的子帧的子帧图案的配置 信息, 以便所述用户设备根据所述子帧图案, 以子帧图案的方式工作。
15、 根据权利要求 11 所述的方法, 其中, 在所述基站转换所述一部分子帧的载 波类型之后, 所述方法还包括:
所述基站向所述用户设备发送包含承载转换后的载波的子帧的子帧图案的配置 信息, 以便所述用户设备根据所述子帧图案, 以子帧图案的方式工作。
16、 一种载波转换方法, 其中, 所述方法包括:
基站向用户设备发送切换命令和切换辅助信息, 以便所述用户设备根据所述切换 辅助信息将当前的载波类型转换为所述基站指定的载波类型。
17、 根据权利要求 16所述的方法, 其中, 所述切换辅助信息包括:
与下行同步有关的信息; 和 /或
与上行随机接入有关的信息; 和 /或
当前的载波与转换后的载波是否处于同一状态的指示信息。
18、 一种载波转换方法, 其中, 所述方法包括:
用户设备接收基站发送的切换命令和切换辅助信息;
所述用户设备根据所述切换辅助信息将当前的载波类型转换为所述基站指定的 载波类型。
19、 一种基站, 其中, 所述基站包括:
发送单元, 其向本小区的 UE发送载波转换指示消息, 通过所述载波转换指示消 息指示所述 UE本小区的载波类型即将改变;
处理单元,其转换载波类型,修改相应的系统信息的内容和 /或发送方式以及公共 信号的序列和 /或发送方式。
20、 根据权利要求 19所述的基站, 其中, 所述载波转换指示消息包括即将改变 的载波类型的小区标识和 /或承载 BCT的子帧的子帧图案和 /或承载 NCT的子帧的子 帧图案。
21、 根据权利要求 19所述的基站, 其中, 所述基站还包括:
第三调度单元, 其在转换后的载波是小区标识相同的混合载波, 并且 UE支持所 述混合载波中的所有载波时, 在所述混合载波中的任意子帧上调度所述 UE。
22、 根据权利要求 19所述的基站, 其中, 所述基站还包括:
第四调度单元, 其在转换后的载波是小区标识不同的混合载波, 并且 UE支持所 述混合载波中的所有载波时, 确定所述 UE的服务小区, 在所述 UE的服务小区对应 的载波所在的子帧上调度所述 UE; 或者, 以时分复用的方式, 在所述混合载波的各 个载波所在的子帧上调度所述 UE。
23、 一种用户设备, 其中, 所述用户设备包括:
确定单元, 其在接收到基站发送的载波转换指示消息后, 根据预先约定或者所述 载波转换指示消息携带的时间指示信息确定载波转换时间点;
切换单元, 其在所述确定单元确定的载波转换时间点进行载波转换。
24、 根据权利要求 23所述的用户设备, 其中, 所述切换单元在所述载波转换指 示消息包括转换后的载波的小区标识时,在所述载波转换时间点利用所述转换后的载 波的小区标识, 识别小区系统消息、接收小区公共信号和下行控制信号、 以及变更所 述用户设备的上行信号中与小区标识有关的扰码序列以及参考信号序列。
25、 根据权利要求 23所述的用户设备, 其中, 所述用户设备还包括: 第一选择单元, 其在所述转换后的载波为小区标识相同的混合载波, 并且所述用 户设备支持所述混合载波中的所有载波时, 以所述混合载波作为其服务小区。
26、 根据权利要求 23所述的用户设备, 其中, 所述用户设备还包括: 第二选择单元, 其在所述转换后的载波为小区标识不同的混合载波, 并且所述用 户设备支持所述混合载波中的所有载波时, 以所述混合载波作为其服务小区; 或者, 以所述混合载波中的其中一个载波作为其服务小区。
27、 一种基站, 其中, 所述基站包括:
切换单元, 其将本小区的所有 UE切换到可以为所述 UE提供服务的载波; 处理单元,其转换载波类型,修改相应的系统信息的内容和 /或发送方式以及公共 信号的序列和 /或发送方式。
28、 根据权利要求 27所述的基站, 其中, 所述基站还包括:
第三调度单元, 其在所述转换后的载波为小区标识不同的混合载波, 并且所述 UE支持所述混合载波中的所有载波时, 确定所述 UE的服务小区, 在所述 UE的服 务小区对应的载波所在的子帧上调度所述 UE; 或者, 以时分复用的方式, 在所述混 合载波的各个载波所在的子帧上调度所述 UE。
29、 一种基站, 其中, 所述基站包括:
第一调度单元, 其停止在当前载波的一部分子帧上调度用户设备;
第一处理单元, 其转换所述一部分子帧的载波类型, 修改相应的系统信息的内容 和 /或发送方式以及公共信号的序列和 /或发送方式;
第一切换单元, 其将本小区内能切换到转换后的载波的用户设备切换到所述转换 后的载波;
第二处理单元, 其将所述当前载波的除上述一部分子帧以外的其他子帧的载波类 型转换为所述转换后的载波。
30、 根据权利要求 29所述的基站, 其中, 所述第一调度单元包括:
第一发送模块, 其向用户设备发送包含承载除上述一部分子帧以外的其他子帧的 子帧图案的配置信息,以便所述用户设备根据所述子帧图案,以子帧图案的方式工作。
31、 根据权利要求 29所述的基站, 其中, 所述第一切换单元包括:
第二发送模块, 其向所述用户设备发送切换命令和切换辅助信息, 以便所述用户 设备根据所述切换辅助信息切换到所述转换后的载波。
32、 根据权利要求 29所述的基站, 其中, 所述第一切换单元包括:
第三发送模块, 其向所述用户设备发送包含承载转换后的载波的子帧的子帧图案 的配置信息, 以便所述用户设备根据所述子帧图案, 以子帧图案的方式工作。
33、 根据权利要求 29所述的基站, 其中, 所述基站还包括:
第四发送模块, 其在所述第一处理单元转换所述一部分子帧的载波类型之后, 向 所述用户设备发送包含承载转换后的载波的子帧的子帧图案的配置信息,以便所述用 户设备根据所述子帧图案, 以子帧图案的方式工作。
34、 一种基站, 其中, 所述基站包括:
发送单元, 其向用户设备发送切换命令和切换辅助信息, 以便所述用户设备根据 所述切换辅助信息将当前的载波类型转换为所述基站指定的载波类型。
35、 根据权利要求 34所述的基站, 其中, 所述切换辅助信息包括:
与下行同步有关的信息; 和 /或
与上行随机接入有关的信息; 和 /或
当前的载波与转换后的载波是否处于同一状态的指示信息。
36、 一种用户设备, 其中, 所述用户设备包括:
接收单元, 其接收基站发送的切换命令和切换辅助信息;
转换单元, 其根据所述切换辅助信息将当前的载波类型转换为所述基站指定的载 波类型。
37、 一种通信系统, 其中, 所述系统包括权利要求 19~22任一项所述基站和权利 要求 23~26任一项所述的 UE, 或者包括权利要求 27~28任一项所述的基站以及 UE, 或者包括权利要求 29~33任一项所述的基站以及 UE, 或者包括权利要求 34~35任一 项所述的基站和权利要求 36所述的 UE。
38、 一种计算机可读程序, 其中当在基站中执行该程序时, 该程序使得计算机在 所述基站中执行权利要求 1-4,9-10, 11-15,16-17中任一项所述的载波转换方法。
39、 一种存储有计算机可读程序的存储介质, 其中该计算机可读程序使得计算机 在基站中执行权利要求 1-4,9-10, 11-15,16-17中任一项所述的载波转换方法。
40、 一种计算机可读程序, 其中当在终端设备中执行该程序时, 该程序使得计算 机在所述终端设备中执行权利要求 5-8, 18任一项所述的载波转换方法。
41、 一种存储有计算机可读程序的存储介质, 其中该计算机可读程序使得计算机 在终端设备中执行权利要求 5-8,18任一项所述的载波转换方法。
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