CN106900054B - Multi-carrier transmission method, user equipment and base station - Google Patents
Multi-carrier transmission method, user equipment and base station Download PDFInfo
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- CN106900054B CN106900054B CN201710214167.1A CN201710214167A CN106900054B CN 106900054 B CN106900054 B CN 106900054B CN 201710214167 A CN201710214167 A CN 201710214167A CN 106900054 B CN106900054 B CN 106900054B
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Abstract
The application discloses a multi-carrier transmission method, user equipment and a base station, wherein the method comprises the following steps: user equipment acquires a carrier synchronization clock selection standard, wherein the carrier synchronization clock selection standard comprises a selection standard of a synchronization clock for the user equipment to carry out multi-carrier transmission; the user equipment selects a synchronous clock according to the carrier synchronous clock selection standard; and the user equipment carries out multi-carrier transmission according to the selected synchronous clock. The user equipment selects the synchronous clock during the multi-carrier transmission according to the acquired carrier synchronous clock selection standard, so that the user equipment can realize the multi-carrier transmission with other user equipment according to the selected synchronous clock during the multi-carrier transmission with other user equipment.
Description
Technical Field
The present application relates to the field of communications technologies, and in particular, to a multi-carrier transmission method, a user equipment, and a base station.
Background
D2D (full name of english: Device to Device, chinese name: Device direct connection) is a technology for establishing a direct communication link between mobile terminals to transmit services, and has transmission characteristics of short link distance, high channel quality, high speed, low time delay, and low power consumption. The adjacent mobile terminals can communicate through the D2D technology, and therefore information sharing is achieved.
Specifically, when communication is performed between mobile terminals, a synchronous clock is generally determined in advance, and communication is performed based on the determined synchronous clock. For example, when the mobile terminal is located within the signal coverage of the base station, the base station may provide a synchronization clock, and after synchronization between the mobile terminal and the base station is completed, clock preparation may be provided for communication between the mobile terminal and other mobile terminals; as another example, when a mobile terminal is out of signal coverage of a base station, the mobile terminal may be used as a synchronous clock and provide clock preparation for communications between the mobile terminal and other mobile terminals.
In the prior art, when determining a synchronization clock and synchronizing, mobile terminals are generally synchronized in a single carrier manner, and information transmission between the mobile terminals is realized by only one carrier. With the increase of the amount of information transmitted between mobile terminals, the information transmission between the mobile terminals is generally required to be realized in a multi-carrier manner.
However, in the application scenario of multiple carriers, there is still no method for determining the multi-carrier synchronization clock in the prior art.
Disclosure of Invention
The embodiment of the application provides a multi-carrier transmission method, user equipment and a base station, which are used for solving the problem that a synchronous clock of multiple carriers cannot be determined when mobile terminals communicate in a multi-carrier mode in the prior art.
The embodiment of the application provides a multi-carrier transmission method, which comprises the following steps:
user equipment acquires a carrier synchronization clock selection standard, wherein the carrier synchronization clock selection standard comprises a selection standard of a synchronization clock for the user equipment to carry out multi-carrier transmission;
the user equipment selects a synchronous clock according to the carrier synchronous clock selection standard;
and the user equipment carries out multi-carrier transmission according to the selected synchronous clock.
The embodiment of the present application further provides a multi-carrier transmission method, including:
a base station determines a carrier synchronization clock selection standard, wherein the carrier synchronization clock selection standard comprises a selection standard of a synchronization clock for user equipment to carry out multi-carrier transmission;
and the base station sends the carrier synchronization clock selection standard to the user equipment so that the user equipment can select the synchronization clock for multi-carrier transmission according to the carrier synchronization clock selection standard.
An embodiment of the present application provides a user equipment, including:
the acquisition module is used for acquiring a carrier synchronization clock selection standard, wherein the carrier synchronization clock selection standard comprises a selection standard of a synchronization clock for the user equipment to carry out multi-carrier transmission;
the processing module selects a synchronous clock according to the carrier synchronous clock selection standard;
and the communication module is used for carrying out multi-carrier transmission according to the selected synchronous clock.
An embodiment of the present application provides a base station, including:
the processing module is used for determining a carrier synchronization clock selection standard, wherein the carrier synchronization clock selection standard comprises a selection standard of a synchronization clock for user equipment to carry out multi-carrier transmission;
and the sending module is used for sending the carrier synchronization clock selection standard to the user equipment so that the user equipment can select the synchronization clock for multi-carrier transmission according to the carrier synchronization clock selection standard.
The embodiment of the application adopts at least one technical scheme which can achieve the following beneficial effects:
according to the technical scheme provided by the embodiment of the application, the user equipment acquires a carrier synchronization clock selection standard which is used for selecting a synchronization clock for multi-carrier transmission by the user equipment; the user equipment selects a synchronous clock according to the carrier synchronous clock selection standard; and the user equipment carries out multi-carrier transmission according to the selected synchronous clock. The user equipment selects the synchronous clock during the multi-carrier transmission according to the acquired carrier synchronous clock selection standard, so that the user equipment can realize the multi-carrier transmission with other user equipment according to the selected synchronous clock during the multi-carrier transmission with other user equipment.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
fig. 1 is a flowchart illustrating a multi-carrier transmission method according to an embodiment of the present application;
fig. 2 is a flowchart illustrating another multicarrier transmission method according to an embodiment of the present application;
fig. 3 is a flowchart illustrating another multi-carrier transmission method according to an embodiment of the present application;
fig. 4 is a schematic diagram of a user equipment performing multi-carrier transmission according to an embodiment of the present application;
fig. 5 is a schematic structural diagram of a user equipment according to an embodiment of the present application;
fig. 6 is a schematic structural diagram of a base station according to an embodiment of the present application;
fig. 7 is a schematic structural diagram of another user equipment according to an embodiment of the present application;
fig. 8 is a schematic structural diagram of another base station according to an embodiment of the present application.
Detailed Description
The technical solutions of the present application will be described clearly and completely below with reference to the specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The technical scheme of the invention can be applied to Long Term Evolution (LTE), a 5G new air interface technology thereof and the like.
To facilitate understanding of the embodiments of the present application, several elements that will be introduced in the description of the embodiments of the present application are first introduced herein.
User Equipment (UE), also referred to as Mobile Terminal (Mobile Terminal), Mobile User Equipment (ms), etc., may communicate with one or more core networks via a Radio Access Network (e.g., RAN), and may be Mobile terminals, such as Mobile phones (or "cellular" phones) and computers having Mobile terminals, such as portable, pocket, hand-held, computer-included, or vehicle-mounted Mobile devices, which exchange language and/or data with the Radio Access Network.
The Base Station may be a Base Transceiver Station (BTS) in GSM or CDMA, a Base Station (NodeB) in WCDMA, or an evolved Node B (eNB or e-NodeB) in LTE, but the present invention is not limited thereto, and for convenience of description, the following embodiments use eNB as an example for explanation.
The technical solutions provided by the embodiments of the present application are described in detail below with reference to the accompanying drawings.
Fig. 1 is a flowchart illustrating a multi-carrier transmission method according to an embodiment of the present application. The method is as follows. The execution subject of the embodiment of the application may be a user equipment.
Step 101: the user equipment obtains a carrier synchronization clock selection criterion.
The carrier synchronization clock selection criterion includes a selection criterion of a synchronization clock for the user equipment to perform multi-carrier transmission.
In step 101, before performing multicarrier aggregation transmission, the ue may obtain a carrier synchronization clock selection criterion, where the carrier synchronization clock selection criterion may include a selection criterion of a synchronization clock for performing multicarrier transmission by the ue, so that the ue selects the synchronization clock for performing multicarrier transmission according to the carrier synchronization clock selection criterion.
In the embodiment of the present application, the manner for the ue to obtain the carrier synchronization clock selection criterion at least includes the following two cases:
in the first case: and the carrier synchronization clock selection standard acquired by the user equipment is sent by a base station.
Namely, the base station determines the carrier synchronization clock selection standard in advance, and sends the carrier synchronization clock selection standard to the user equipment, and the user equipment acquires the carrier synchronization clock selection standard issued by the base station.
The base station may send the carrier synchronization clock selection criterion to the user equipment in a system information broadcast manner.
In the second case: and the selection standard of the carrier synchronization clock acquired by the user equipment is preset.
In the second case, the carrier synchronization clock selection criterion may be preset by the base station and the ue, or may be preset by a protocol, which is not specifically limited, so that the ue may obtain the carrier synchronization clock selection criterion according to a preset manner.
In another embodiment provided by the present application, if the carrier synchronization clock selection criterion acquired by the ue is sent by the base station, before the ue acquires the carrier synchronization clock selection criterion, the method further includes:
the user equipment sends the characteristic information of the user equipment to a base station, wherein the characteristic information is used for representing whether the user equipment meets a multi-carrier transmission condition and/or whether the user equipment requires multi-carrier transmission;
and the user equipment receives a carrier synchronization clock selection standard sent by the base station, wherein the carrier synchronization clock selection standard is sent by the base station after the user equipment is determined to meet a multi-carrier transmission condition and/or the user equipment requires multi-carrier transmission.
That is to say, the ue may report in advance whether the ue meets a multi-carrier transmission condition (may be capability information of the ue for multi-carrier transmission), and/or whether the ue requires multi-carrier transmission (may be priority setting information of the ue for multi-carrier transmission) to the base station, and the base station may send the carrier synchronization clock selection criterion to the ue when determining that the ue meets the multi-carrier transmission condition, or determining that the ue requires multi-carrier transmission, or determining that the ue meets both the multi-carrier transmission condition and the multi-carrier transmission, at this time, the ue may receive and obtain the carrier synchronization clock selection criterion.
Based on the content recorded in step 101, the ue may perform step 102 after acquiring the carrier synchronization clock selection criterion.
Step 102: and the user equipment selects a synchronous clock according to the carrier synchronous clock selection standard.
In step 102, after obtaining the carrier synchronization clock selection criterion, the ue may select a synchronization clock for performing multi-carrier transmission according to the carrier synchronization clock selection criterion.
In this embodiment, the method for selecting the synchronous clock by the user equipment according to the carrier synchronous clock selection criterion may include at least the following two methods:
the first method comprises the following steps: the user equipment selects a clock of a carrier which meets the carrier synchronization clock selection standard in at least one carrier of the user equipment as a synchronization clock;
the second method comprises the following steps: the user equipment selects a synchronization signal of a Global Navigation Satellite System (GNSS) as the synchronization clock.
For a first method:
at least one carrier of the user equipment may be pre-allocated by the base station. After the user equipment acquires the carrier synchronization clock selection standard, the user equipment may compare the at least one carrier obtained by the distribution of the carrier synchronization clock selection standard with the carrier synchronization clock selection standard, and select a clock of a carrier meeting the carrier synchronization clock selection standard as the synchronization clock.
The carrier synchronization clock selection criterion may include signal strength of a carrier, and may also include carrier frequency load information of the carrier, which is not specifically limited herein.
For example, when the carrier synchronization clock selection criterion includes signal strength of a carrier, the carrier synchronization clock selection criterion may be a set range of signal strength, and when the carrier synchronization clock selection criterion includes carrier frequency load information of the carrier, the carrier synchronization clock selection criterion may be a set range of carrier frequency load.
Thus, when comparing the at least one carrier with the carrier synchronous clock selection criterion, at least the following cases can be distinguished (one carrier of the at least one carrier can be taken as an example for explanation):
in the first case: and the user equipment compares the signal intensity of the carrier with the signal intensity of a set range contained in the carrier synchronous clock selection standard.
Specifically, if the carrier synchronization clock selection criterion is specifically signal strengths a to B within a set range, the ue may determine whether the signal strength of the carrier is between a and B, and if so, the carrier conforms to the carrier synchronization clock selection criterion; if not, the carrier wave does not accord with the carrier wave synchronous clock selection standard.
In the second case: and the user equipment compares the carrier frequency load information of the carrier with the carrier frequency load information contained in the carrier synchronization clock selection standard.
Specifically, if the carrier synchronization clock selection standard is specifically smaller than a carrier frequency load a, the user equipment may determine whether carrier frequency load information of the carrier is smaller than a, and if so, the carrier conforms to the carrier synchronization clock selection standard; if not, the carrier wave does not accord with the carrier wave synchronous clock selection standard.
In the third case: and the user equipment compares the signal intensity and the carrier frequency load information of the carrier with the signal intensity of a set range and the carrier frequency load information of the set range contained in the carrier synchronization clock selection standard.
Specifically, if the carrier synchronization clock selection standard is specifically signal strength a to B within a set range and is smaller than carrier frequency load a, the user equipment may determine whether the signal strength of the carrier is between a and B and whether carrier frequency load information is smaller than a, and if so, the carrier conforms to the carrier synchronization clock selection standard; if not, the carrier wave does not accord with the carrier wave synchronous clock selection standard.
In practical applications, as a preferable mode, if the number of the carriers of which the at least one carrier meets the signal strength is greater than 1, a clock of one of the carriers with a lower carrier frequency load may be selected as the synchronous clock, so as to implement load balancing of the carriers.
In this embodiment of the present application, when it is determined that at least one carrier of the user equipment satisfies any one of the above conditions, the user equipment may select a clock of the carrier that meets the carrier synchronization clock selection criterion as the synchronization clock.
For the second method:
the carrier synchronous clock selection criterion may be that a synchronous signal of the GNSS is used as a synchronous clock. Because there is only one GNSS synchronization signal, which is different from the case of too many multicarrier synchronization signals, when the user equipment performs multicarrier transmission, at this time, after the user equipment acquires the carrier synchronization clock selection criterion, the GNSS synchronization signal may be determined as a synchronization clock performing multicarrier transmission.
It should be noted that, in this embodiment of the present application, the ue may be located within a coverage area of a base station, or located outside the coverage area of the base station, and when the ue is located within the coverage area of the base station, the ue may determine a synchronization clock for performing multicarrier transmission according to the first method described above, or may determine a synchronization clock for performing multicarrier transmission according to the second method described above, which is not specifically limited herein; when the ue is out of the coverage of the base station, the ue may determine the synchronization clock for performing the multicarrier transmission according to the second method described above.
In another embodiment provided by the present application, after the user equipment selects the synchronization clock according to the carrier synchronization clock selection criterion, the method further includes:
the user equipment receives configuration information sent by a base station, wherein the configuration information is sent by the base station after the user equipment is determined to be in a connection state, the configuration information comprises a set carrier frequency, and the configuration information is used for representing and selecting a clock of a carrier wave of the set carrier frequency as a synchronous clock;
and the user equipment selects the clock of the carrier wave with the set carrier frequency as a synchronous clock for carrying out multi-carrier transmission.
In practical application, if the ue is in a connected state, the base station may further determine configuration information for changing a synchronization clock of the ue according to an actual situation of the ue (for example, available resources of different carrier frequencies, an interference situation of a location where the ue is located, and the like), where the configuration information may include a set carrier frequency.
After determining the configuration information, the base station may send the configuration information to the user equipment, that is, the base station may configure the synchronization clock of the set carrier frequency broadcast by the user equipment, so as to change the synchronization clock selected by the user equipment according to the carrier synchronization clock selection standard. The base station may send the configuration information to the ue through dedicated signaling, and for different ues, the base station may use different dedicated signaling.
At this time, the ue may receive the configuration information sent by the base station, and select a clock of the carrier with the set carrier frequency as a synchronization clock for performing multi-carrier transmission.
Step 103: and the user equipment carries out multi-carrier transmission according to the selected synchronous clock.
In step 103, after selecting the synchronization clock for performing the multi-carrier transmission, the ue may perform the multi-carrier transmission with other ues according to the synchronization clock.
According to the technical scheme provided by the embodiment of the application, user equipment acquires a carrier synchronization clock selection standard, wherein the carrier synchronization clock selection standard comprises a selection standard of a synchronization clock for the user equipment to carry out multi-carrier transmission; the user equipment selects a synchronous clock according to the carrier synchronous clock selection standard; and the user equipment carries out multi-carrier transmission according to the selected synchronous clock. The user equipment selects the synchronous clock during the multi-carrier transmission according to the acquired carrier synchronous clock selection standard, so that the user equipment can realize the multi-carrier transmission with other user equipment according to the selected synchronous clock during the multi-carrier transmission with other user equipment.
Fig. 2 is a flowchart illustrating another multicarrier transmission method according to an embodiment of the present application. The method is as follows. The execution subject of the embodiment of the present application may be a base station.
Step 201: the base station determines a carrier synchronization clock selection criterion.
The carrier synchronization clock selection standard comprises a selection standard of a synchronization clock for the user equipment to perform multi-carrier transmission.
In step 201, in a scenario of multicarrier transmission, a base station may determine a carrier synchronization clock selection criterion, where the carrier synchronization clock selection criterion may include a selection criterion of a synchronization clock for multicarrier transmission by a user equipment, and thus, the base station may provide the selection criterion of the synchronization clock for the user equipment based on the carrier synchronization clock selection criterion.
The mode of determining the carrier synchronization clock selection standard by the base station may be generating the carrier synchronization clock selection standard according to an actual situation, or may be determined in a mode agreed in advance with the user equipment, or may be determined according to a protocol, which is not specifically limited herein.
The carrier synchronization clock selection criterion may include signal strength of a carrier and/or carrier frequency load information of the carrier, and may also select a synchronization signal of a global navigation satellite system GNSS as the synchronization clock.
Step 202: and the base station sends the carrier synchronization clock selection standard to the user equipment so that the user equipment can select the synchronization clock for multi-carrier transmission according to the carrier synchronization clock selection standard.
In step 202, after determining the carrier synchronization clock selection criterion, the base station may send the carrier synchronization clock selection criterion to the user equipment, so that the user equipment may select a synchronization clock for performing multi-carrier transmission according to the carrier synchronization clock selection criterion.
In another embodiment provided by the present application, the sending, by the base station, the carrier synchronization clock selection criterion to the user equipment includes:
the base station determines the characteristic information of the user equipment, wherein the characteristic information is used for representing whether the user equipment meets the multi-carrier transmission condition and/or whether the user equipment requires multi-carrier transmission;
and the base station sends the carrier synchronization clock selection standard to the user equipment when determining that the user equipment meets the multi-carrier transmission condition and/or the user equipment requires multi-carrier transmission according to the characteristic information.
That is, before sending the carrier synchronization clock selection criterion to the ue, the base station may determine whether the ue satisfies a multicarrier transmission condition (may be capability information of the ue for multicarrier transmission), and/or requires multicarrier transmission (may be priority setting information of the ue for multicarrier transmission), and when determining that the ue satisfies the multicarrier transmission condition, and/or requires multicarrier transmission, may send the carrier synchronization clock selection criterion to the ue, so that the ue determines a carrier providing a synchronization clock according to the carrier synchronization clock selection criterion.
The characteristic information of the ue may be obtained actively by the base station, or may be sent to the base station by the ue, which is not specifically limited herein.
In this embodiment, the base station may allocate at least one carrier to the ue in advance, so that the ue may use the at least one carrier for transmission, and meanwhile, when determining that the ue meets a multicarrier transmission condition and/or requires multicarrier transmission, the base station may send a determined carrier synchronization clock selection criterion to the ue, so as to select a clock of one carrier as a synchronization clock for the ue according to the carrier synchronization clock selection criterion.
In another embodiment provided by the present application, after the base station sends the carrier synchronization clock selection criterion to the user equipment, the method further includes:
determining whether the user equipment is in a connected state;
and if the user equipment is determined to be in a connection state, sending configuration information to the user equipment, wherein the configuration information comprises a set carrier frequency, and the configuration information is used for representing and selecting a clock of a carrier wave of the set carrier frequency as a synchronous clock.
That is to say, after the base station sends the carrier synchronization clock selection criterion to the user equipment, if the user equipment is in a connected state, the base station may further determine configuration information for changing the synchronization clock of the user equipment according to actual conditions of the user equipment (for example, available resources of different carrier frequencies, an interference condition of a location where the user equipment is located, and the like), and send the configuration information to the user equipment, so that the user equipment changes the synchronization clock according to the configuration information.
The configuration information may be determined based on a dedicated signaling, where the configuration information may include a set carrier frequency, and the configuration information is used to characterize that a clock of a carrier of the set carrier frequency is determined as a synchronous clock for the ue to perform multi-carrier transmission.
It should be noted that, when the base station sends the carrier synchronization clock selection criterion to the user equipment, the base station may use a system information broadcast mode, and at this time, the user equipment may be in an idle state or a connected state; when the base station sends the configuration information to the user equipment in a connected state, the base station may use a dedicated signaling mode, and the base station may use different dedicated signaling for different user equipments.
According to the technical scheme provided by the embodiment of the application, a base station determines to obtain a carrier synchronization clock selection standard, wherein the carrier synchronization clock selection standard comprises a selection standard of a synchronization clock for multi-carrier transmission of user equipment; and the base station sends the carrier synchronization clock selection standard to the user equipment so that the user equipment can select the synchronization clock for multi-carrier transmission according to the carrier synchronization clock selection standard. Therefore, the base station sends the carrier synchronization clock selection standard of the synchronization clock for the user equipment to carry out multi-carrier transmission to the user equipment, so that the user equipment can select the synchronization clock for carrying out multi-carrier transmission after receiving the carrier synchronization clock selection standard, and thus, when the user equipment carries out multi-carrier transmission with other user equipment, the user equipment can realize multi-carrier transmission with other user equipment according to the selected synchronization clock.
Fig. 3 is a flowchart illustrating another multicarrier transmission method according to an embodiment of the present application. The method is as follows. The embodiment of the present application takes the case that the ue is in the coverage of the base station as an example.
Step 301: the base station allocates at least one carrier to the user equipment.
Step 302: the base station determines a carrier synchronization clock selection criterion.
The carrier synchronization clock selection criterion includes a selection criterion of a synchronization clock for the user equipment to perform multi-carrier transmission.
Step 303: and the user equipment sends the characteristic information of the user equipment to the base station.
The characteristic information is used for representing whether the user equipment meets a multi-carrier transmission condition and/or whether the user equipment requires multi-carrier transmission.
Step 304: and the base station receives the characteristic information sent by the user equipment.
Step 305: the base station determines whether the user equipment meets a multi-carrier transmission condition and/or whether the user equipment requires multi-carrier transmission.
In step 305, if the base station determines that the ue meets the multi-carrier transmission condition and/or the ue requires multi-carrier transmission, then step 306 is executed; if the ue of the base station does not satisfy the multi-carrier transmission condition and the ue does not require multi-carrier transmission, step 314 is executed.
Step 306: and the base station sends the carrier synchronization clock selection standard to the user equipment.
Step 307: and the user equipment receives the carrier synchronization clock selection standard sent by the base station.
Step 308: and the user equipment determines the clock of the carrier meeting the carrier synchronization clock selection standard in the at least one carrier obtained by distribution as the synchronization clock for multi-carrier transmission.
Step 309: the base station determines whether the user equipment is in a connected state.
In step 309, the base station may determine whether the ue is in a connected state, and if so, may perform step 310; if not, go to step 314.
Step 310: and the base station sends the configuration information to the user equipment.
The configuration information comprises a set carrier frequency, and the configuration information is used for representing and selecting a clock of the carrier frequency of the set carrier frequency as a synchronous clock.
Step 311: and the base station receives the configuration information sent by the base station.
Step 312: and the user equipment takes the clock of the carrier wave with the set carrier frequency contained in the configuration information as a synchronous clock for carrying out multi-carrier transmission.
Step 313: and the user equipment carries out multi-carrier transmission according to the synchronous clock.
Step 314: and (6) ending.
According to the technical scheme provided by the embodiment of the application, a base station determines a carrier synchronization clock selection standard, wherein the carrier synchronization clock selection standard comprises a selection standard of a synchronization clock for multi-carrier transmission of user equipment; the base station sends the carrier synchronization clock selection standard to user equipment; and the user equipment receives the carrier synchronization clock selection standard, takes the clock of the carrier meeting the carrier synchronization clock selection standard in at least one carrier of the user equipment as a synchronization clock, and carries out multi-carrier transmission according to the synchronization clock. Therefore, when the user equipment carries out multi-carrier transmission with other user equipment, the multi-carrier transmission with other user equipment can be realized according to the selected synchronous clock.
Specific implementation of the embodiment of the present application can refer to the embodiment shown in fig. 1 and the embodiment shown in fig. 2.
Fig. 4 is a schematic diagram of a user equipment performing multi-carrier transmission according to an embodiment of the present application.
The base station 1 and the base station 2 shown in fig. 4 may be connected together by means of ideal Backhaul or co-side, where the user equipment a is located within the coverage of the base station 1, the user equipment B is located within the coverage of the base station 2, and the user equipment C and the user equipment D are both located outside the coverage of the base station 1 and the base station 2.
The communication scenario between the ue shown in fig. 4 can be divided into three cases, i.e., in-coverage (communication between the ue a and the ue B), out-of-coverage (communication between the ue C and the ue D), and partial coverage (communication between the ue B and the ue C).
Specifically, for an application scenario within coverage, when the ue a performs multi-carrier transmission with the ue B, and the base station 1 determines that the ue a satisfies a multi-carrier transmission condition, it may broadcast a carrier synchronization clock selection criterion including a carrier signal strength to the ue a, and when the ue a receives the carrier synchronization clock selection criterion, it may use a clock of a carrier meeting the carrier signal strength as a synchronization clock, and implement multi-carrier transmission with the ue B according to the synchronization clock.
Further, if the base station 1 determines that the user equipment a is currently in a connected state, the base station 1 may also reconfigure the synchronization clock of the specific carrier frequency broadcast by the user equipment a according to the carrier frequency resource of the user equipment a or the interference situation of the location of the user equipment a.
In addition, the base station 2 may broadcast a carrier synchronization clock selection criterion containing the carrier signal strength to the user equipment B, so that the user equipment B can determine the synchronization clock for multicarrier transmission with the user equipment a.
For a partially covered application scenario, when the ue B performs multi-carrier communication with the ue C, the base station 2 may broadcast the carrier synchronization clock selection criteria to the ue B by using the above-mentioned method, so that the ue B may determine the synchronization clock, thereby implementing multi-carrier transmission with the ue C.
For an out-of-coverage application scenario, when the user equipment C and the user equipment D perform multi-carrier transmission, the user equipment C may determine a synchronization signal synchronization clock of the GNSS, and since there is only one synchronization signal of the GNSS, the user equipment C may implement multi-carrier transmission with the user equipment D based on the synchronization signal.
Specific implementation of the embodiment of the present application may refer to the embodiment shown in fig. 1, the embodiment shown in fig. 2, and/or the embodiment shown in fig. 3, and a description thereof is not repeated here.
Fig. 5 is a schematic structural diagram of a user equipment according to an embodiment of the present application. The user equipment includes: an acquisition module 51, a processing module 52 and a communication module 53, wherein:
an obtaining module 51, configured to obtain a carrier synchronization clock selection standard, where the carrier synchronization clock selection standard includes a selection standard of a synchronization clock for performing multi-carrier transmission by the ue;
the processing module 52 selects a synchronous clock according to the carrier synchronous clock selection standard;
and a communication module 53 for performing multicarrier transmission according to the selected synchronous clock.
In this embodiment, the selecting, by the processing module 52, a synchronous clock according to the carrier synchronous clock selection criterion includes:
selecting a clock of a carrier meeting the carrier synchronization clock selection standard from at least one carrier of the user equipment as a synchronization clock; the carrier synchronization clock selection standard comprises the signal strength of the carrier and/or the carrier frequency load information of the carrier.
In another embodiment provided by the present application, the selecting, by the processing module 52, a synchronous clock according to the carrier synchronous clock selection criterion includes:
and selecting a synchronization signal of a Global Navigation Satellite System (GNSS) as the synchronous clock, wherein the carrier synchronous clock selection standard takes the synchronization signal of the GNSS as the synchronous clock.
The user equipment further comprises: a sending module 54, wherein:
the sending module 54 sends the characteristic information of the ue to the base station before the obtaining module 51 obtains the carrier synchronization clock selection criterion, where the characteristic information is used to characterize whether the ue meets a multi-carrier transmission condition and/or whether the ue requires multi-carrier transmission;
the obtaining module 51 receives a carrier synchronization clock selection criterion sent by the base station, where the carrier synchronization clock selection criterion is sent by the base station after determining that the ue meets a multi-carrier transmission condition and/or that the ue requires multi-carrier transmission.
The processing module 52 is further configured to receive configuration information sent by a base station after selecting a synchronization clock according to the carrier synchronization clock selection standard, where the configuration information is sent by the base station after determining that the user equipment is in a connected state, the configuration information includes a set carrier frequency, and the configuration information is used to represent a clock for selecting a carrier of the set carrier frequency as the synchronization clock; and selecting the clock of the carrier wave with the set carrier frequency as a synchronous clock for carrying out multi-carrier transmission.
Fig. 6 is a schematic structural diagram of a base station according to an embodiment of the present application. The base station includes: a processing module 61 and a sending module 62, wherein:
the processing module 61 determines a carrier synchronization clock selection standard, where the carrier synchronization clock selection standard includes a selection standard of a synchronization clock for the user equipment to perform multi-carrier transmission;
a sending module 62, configured to send the carrier synchronization clock selection criterion to the ue, so that the ue selects a synchronization clock for multicarrier transmission according to the carrier synchronization clock selection criterion.
The sending module 62 sends the carrier synchronization clock selection criterion to the ue, including:
determining characteristic information of user equipment, wherein the characteristic information is used for representing whether the user equipment meets a multi-carrier transmission condition and/or whether the user equipment requires multi-carrier transmission;
and when the user equipment is determined to meet the multi-carrier transmission condition and/or the user equipment is required to carry out multi-carrier transmission according to the characteristic information, the carrier synchronization clock selection standard is sent to the user equipment.
The sending module 62 is further configured to determine whether the ue is in a connected state after sending the carrier synchronization clock selection criterion to the ue;
and if the user equipment is determined to be in a connection state, sending configuration information to the user equipment, wherein the configuration information comprises a set carrier frequency, and the configuration information is used for representing and selecting a clock of a carrier wave of the set carrier frequency as a synchronous clock.
Fig. 7 is a schematic structural diagram of a user equipment 700 according to an embodiment of the present application. Base station 700 may include a processor 702, a transmitter 701, and a receiver 704. Optionally, a memory 703 is included. In particular applications, transmitter 701 and receiver 704 may be coupled to an antenna 705.
The memory 703 is used for storing programs. In particular, the program may include program code comprising computer operating instructions. Memory 703 may include both read-only memory and random-access memory, and provides instructions and data to processor 702. The memory 703 may comprise high-speed RAM memory, and may also include non-volatile memory (non-volatile memory), such as at least one disk memory.
The processor 702 is configured to execute the following operations, optionally, to execute a program stored in the memory 703, and specifically to execute the following operations:
acquiring a carrier synchronization clock selection standard, wherein the carrier synchronization clock selection standard comprises a selection standard of a synchronization clock for the user equipment to carry out multi-carrier transmission;
the user equipment selects a synchronous clock according to the carrier synchronous clock selection standard;
and the user equipment carries out multi-carrier transmission according to the selected synchronous clock.
The method described above as performed by the user equipment in any of the embodiments of fig. 1, fig. 3 and fig. 4 of the present application may be applied to the processor 702, or implemented by the processor 702. The processor 702 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be performed by integrated logic circuits of hardware or instructions in the form of software in the processor 702. The Processor 702 may be a general-purpose Processor, and includes a Central Processing Unit (CPU), a Network Processor (NP), and the like; but may also be a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components. The various methods, steps, and logic blocks disclosed in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in the memory 703, and the processor 702 reads the information in the memory 703 and performs the steps of the above method in combination with the hardware thereof.
Embodiments of the present application also provide a computer-readable storage medium storing one or more programs, the one or more programs comprising instructions, which when executed by a portable electronic device comprising a plurality of application programs, enable the portable electronic device to perform the method of any of the embodiments shown in fig. 1 and 3.
Fig. 8 is a schematic structural diagram of a base station 800 according to an embodiment of the present application. Base station 800 may include a processor 802, a transmitter 801, and a receiver 804. Optionally, a memory 803 is included. In particular applications, the transmitter 801 and receiver 804 may be coupled to an antenna 805.
The memory 803 stores programs. In particular, the program may include program code comprising computer operating instructions. The memory 803 may include both read-only memory and random-access memory, and provides instructions and data to the processor 802. The memory 803 may comprise high-speed RAM memory, and may also include non-volatile memory (non-volatile memory), such as at least one disk memory.
A processor 802 configured to execute the following operations, optionally, the program stored in the memory 803, and specifically configured to execute the following operations:
determining a carrier synchronization clock selection standard, wherein the carrier synchronization clock selection standard comprises a selection standard of a synchronization clock for user equipment to perform multi-carrier transmission;
and sending the carrier synchronization clock selection standard to the user equipment so that the user equipment can select the synchronization clock for multi-carrier transmission according to the carrier synchronization clock selection standard.
The method described above as performed by the base station in any of the embodiments of fig. 2, fig. 3 and fig. 4 of the present application may be applied in the processor 802, or implemented by the processor 802. The processor 802 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be performed by integrated logic circuits of hardware or instructions in the form of software in the processor 802. The Processor 802 may be a general-purpose Processor, and includes a Central Processing Unit (CPU), a Network Processor (NP), and the like; but may also be a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components. The various methods, steps, and logic blocks disclosed in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in the memory 803, and the processor 802 reads the information in the memory 803 and performs the steps of the above method in combination with the hardware thereof.
Embodiments of the present application also provide a computer-readable storage medium storing one or more programs, the one or more programs comprising instructions, which when executed by a portable electronic device comprising a plurality of application programs, enable the portable electronic device to perform the method of any of the illustrated embodiments of fig. 2 and 3.
A communication system provided in the embodiment of the present application may include the user equipment described in the embodiment shown in fig. 5 and the base station described in the embodiment shown in fig. 6; the communication system may also include the user equipment described in the embodiment shown in fig. 7 and the base station described in the embodiment shown in fig. 8.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention or a part thereof, which essentially contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network side device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (14)
1. A multi-carrier transmission method, comprising:
user equipment acquires a carrier synchronization clock selection standard, wherein the carrier synchronization clock selection standard comprises a selection standard of a synchronization clock for the user equipment to carry out multi-carrier transmission;
the user equipment selects a synchronous clock according to the carrier synchronous clock selection standard;
and the user equipment carries out multi-carrier transmission with other user equipment according to the selected synchronous clock.
2. The method of claim 1, wherein the user equipment selecting a synchronization clock according to the carrier synchronization clock selection criteria comprises:
and the user equipment selects a clock of a carrier which meets the carrier synchronization clock selection standard in at least one carrier of the user equipment as a synchronization clock, wherein the carrier synchronization clock selection standard comprises the signal strength of the carrier and/or the carrier frequency load information of the carrier.
3. The method of claim 1, wherein the user equipment selecting a synchronization clock according to the carrier synchronization clock selection criteria comprises:
the user equipment selects a synchronization signal of a Global Navigation Satellite System (GNSS) as the synchronous clock, wherein the carrier synchronous clock selection standard takes the synchronization signal of the GNSS as the synchronous clock.
4. The method of any of claims 1 to 3, wherein the user equipment, prior to acquiring the carrier-synchronized clock selection criterion, the method further comprises:
the user equipment sends the characteristic information of the user equipment to a base station, wherein the characteristic information is used for representing whether the user equipment meets a multi-carrier transmission condition and/or whether the user equipment requires multi-carrier transmission;
and the user equipment receives a carrier synchronization clock selection standard sent by the base station, wherein the carrier synchronization clock selection standard is sent by the base station after the user equipment is determined to meet a multi-carrier transmission condition and/or the user equipment requires multi-carrier transmission.
5. The method of claim 2, wherein after the user equipment selects a synchronization clock according to the carrier synchronization clock selection criteria, the method further comprises:
the user equipment receives configuration information sent by a base station, wherein the configuration information is sent by the base station after the user equipment is determined to be in a connection state, the configuration information comprises a set carrier frequency, and the configuration information is used for representing and selecting a clock of a carrier wave of the set carrier frequency as a synchronous clock;
and the user equipment selects the clock of the carrier wave with the set carrier frequency as a synchronous clock for carrying out multi-carrier transmission.
6. A multi-carrier transmission method, comprising:
a base station determines a carrier synchronization clock selection standard, wherein the carrier synchronization clock selection standard comprises a selection standard of a synchronization clock for user equipment to carry out multi-carrier transmission;
and the base station sends the carrier synchronization clock selection standard to the user equipment so that the user equipment can select the synchronization clock for carrying out multi-carrier transmission with other user equipment according to the carrier synchronization clock selection standard.
7. The method of claim 6, wherein the base station transmitting the carrier synchronization clock selection criteria to the user equipment comprises:
the base station determines the characteristic information of the user equipment, wherein the characteristic information is used for representing whether the user equipment meets the multi-carrier transmission condition and/or whether the user equipment requires multi-carrier transmission;
and the base station sends the carrier synchronization clock selection standard to the user equipment when determining that the user equipment meets the multi-carrier transmission condition and/or the user equipment requires multi-carrier transmission according to the characteristic information.
8. The method of claim 6 or 7, wherein after the base station transmits the carrier synchronization clock selection criteria to the user equipment, the method further comprises:
determining whether the user equipment is in a connected state;
and if the user equipment is determined to be in a connection state, sending configuration information to the user equipment, wherein the configuration information comprises a set carrier frequency, and the configuration information is used for representing and selecting a clock of a carrier wave of the set carrier frequency as a synchronous clock.
9. A user device, comprising:
the acquisition module is used for acquiring a carrier synchronization clock selection standard, wherein the carrier synchronization clock selection standard comprises a selection standard of a synchronization clock for the user equipment to carry out multi-carrier transmission;
the processing module selects a synchronous clock according to the carrier synchronous clock selection standard;
and the communication module is used for carrying out multi-carrier transmission with other user equipment according to the selected synchronous clock.
10. The user equipment of claim 9, wherein the processing module selects a synchronous clock according to the carrier synchronous clock selection criteria, comprising:
and selecting a clock of a carrier which meets the carrier synchronization clock selection standard in at least one carrier of the user equipment as a synchronization clock, wherein the carrier synchronization clock selection standard comprises the signal strength of the carrier and/or the carrier frequency load information of the carrier.
11. The user equipment of claim 9, wherein the processing module selects a synchronous clock according to the carrier synchronous clock selection criteria, comprising:
and selecting a synchronization signal of a Global Navigation Satellite System (GNSS) as the synchronous clock, wherein the carrier synchronous clock selection standard takes the synchronization signal of the GNSS as the synchronous clock.
12. The user equipment of any of claims 9 to 11, wherein the user equipment further comprises a sending module, wherein:
the sending module sends the characteristic information of the user equipment to a base station before the acquisition module acquires the carrier synchronization clock selection standard, wherein the characteristic information is used for representing whether the user equipment meets the requirement of multi-carrier transmission and/or whether the user equipment requires multi-carrier transmission;
the obtaining module receives a carrier synchronization clock selection standard sent by the base station, wherein the carrier synchronization clock selection standard is sent by the base station after the user equipment is determined to meet a multi-carrier transmission condition and/or the user equipment requires multi-carrier transmission.
13. The user equipment of claim 10,
the processing module receives configuration information sent by a base station after selecting a synchronous clock according to the carrier synchronous clock selection standard, wherein the configuration information is sent by the base station after determining that the user equipment is in a connection state, the configuration information comprises a set carrier frequency, and the configuration information is used for representing and selecting a clock of the carrier of the set carrier frequency as the synchronous clock; and selecting the clock of the carrier wave with the set carrier frequency as a synchronous clock for carrying out multi-carrier transmission.
14. A base station, comprising:
the processing module is used for determining a carrier synchronization clock selection standard, wherein the carrier synchronization clock selection standard comprises a selection standard of a synchronization clock for user equipment to carry out multi-carrier transmission;
and the sending module is used for sending the carrier synchronization clock selection standard to the user equipment so that the user equipment can select the synchronization clock for carrying out multi-carrier transmission with other user equipment according to the carrier synchronization clock selection standard.
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| CN109379781B (en) * | 2017-08-11 | 2022-08-19 | 华为技术有限公司 | Information sending method and equipment |
| WO2019153237A1 (en) * | 2018-02-09 | 2019-08-15 | Oppo广东移动通信有限公司 | Synchronized carrier configuration method, device, and computer storage medium |
| CN110417501B (en) * | 2018-04-28 | 2020-12-18 | 华为技术有限公司 | Communication method and communication device |
| CN110474728B (en) * | 2018-05-11 | 2022-02-08 | 大唐移动通信设备有限公司 | Selection method and terminal for synchronous message sending carrier |
| WO2020019218A1 (en) * | 2018-07-25 | 2020-01-30 | 北京小米移动软件有限公司 | Transmission configuration method and apparatus |
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