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 PDFInfo
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- 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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- carrier
- base station
- user equipment
- cell
- hybrid
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- 238000000034 method Methods 0.000 title claims abstract description 176
- 238000006243 chemical reaction Methods 0.000 title claims abstract description 138
- 230000005540 biological transmission Effects 0.000 claims abstract description 29
- 239000000969 carrier Substances 0.000 claims description 59
- 230000008859 change Effects 0.000 claims description 29
- 238000012545 processing Methods 0.000 claims description 28
- 108010076504 Protein Sorting Signals Proteins 0.000 claims description 5
- 238000004891 communication Methods 0.000 claims description 4
- 230000007704 transition Effects 0.000 abstract description 25
- 238000005259 measurement Methods 0.000 description 27
- 238000010586 diagram Methods 0.000 description 16
- 230000011664 signaling Effects 0.000 description 12
- 230000008569 process Effects 0.000 description 9
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000009977 dual effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010295 mobile communication Methods 0.000 description 2
- 238000012559 user support system Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/06—Reselecting a communication resource in the serving access point
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0055—Transmission or use of information for re-establishing the radio link
- H04W36/0066—Transmission 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0055—Transmission or use of information for re-establishing the radio link
- H04W36/0072—Transmission or use of information for re-establishing the radio link of resource information of target access point
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/12—Wireless traffic scheduling
- H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/08—Access point devices
- H04W88/10—Access 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
Description
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Priority Applications (6)
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CN201380079466.9A CN105519186A (zh) | 2013-09-13 | 2013-09-13 | 载波转换方法、装置和系统 |
PCT/CN2013/083473 WO2015035608A1 (zh) | 2013-09-13 | 2013-09-13 | 载波转换方法、装置和系统 |
EP13893438.5A EP3046367A4 (en) | 2013-09-13 | 2013-09-13 | Method, device, and system for carrier conversion |
KR1020167009118A KR101782393B1 (ko) | 2013-09-13 | 2013-09-13 | 캐리어 변환을 위한 방법 및 장치 및 시스템 |
JP2016541757A JP2016534661A (ja) | 2013-09-13 | 2013-09-13 | キャリア変換方法、装置及びシステム |
US15/068,780 US20160198371A1 (en) | 2013-09-13 | 2016-03-14 | Method and Apparatus for Transforming Carrier and System |
Applications Claiming Priority (1)
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PCT/CN2013/083473 WO2015035608A1 (zh) | 2013-09-13 | 2013-09-13 | 载波转换方法、装置和系统 |
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US15/068,780 Continuation US20160198371A1 (en) | 2013-09-13 | 2016-03-14 | Method and Apparatus for Transforming Carrier and System |
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EP (1) | EP3046367A4 (zh) |
JP (1) | JP2016534661A (zh) |
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Cited By (1)
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CN107846711A (zh) * | 2016-09-20 | 2018-03-27 | 北京信威通信技术股份有限公司 | 一种载波切换方法及装置 |
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US20190380066A1 (en) * | 2017-01-04 | 2019-12-12 | Sony Corporation | Handover of terminal between nodes supporting two rats |
EP3641439A4 (en) * | 2017-06-16 | 2021-01-06 | Beijing Xiaomi Mobile Software Co., Ltd. | PROCESS AND DEVICE FOR TRANSMISSION OF INFORMATION |
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- 2013-09-13 CN CN201380079466.9A patent/CN105519186A/zh active Pending
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EP3046367A4 (en) | 2017-10-04 |
KR101782393B1 (ko) | 2017-09-28 |
EP3046367A1 (en) | 2016-07-20 |
JP2016534661A (ja) | 2016-11-04 |
KR20160053982A (ko) | 2016-05-13 |
CN105519186A (zh) | 2016-04-20 |
US20160198371A1 (en) | 2016-07-07 |
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