CN109391390B

CN109391390B - Method for acquiring timing deviation and related equipment

Info

Publication number: CN109391390B
Application number: CN201710672745.6A
Authority: CN
Inventors: 林雁; 沈秀勇
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2017-08-08
Filing date: 2017-08-08
Publication date: 2022-04-05
Anticipated expiration: 2037-08-08
Also published as: WO2019029583A1; CN109391390A

Abstract

The embodiment of the invention discloses a method for acquiring timing deviation and related equipment. Wherein, the method comprises the following steps: the communication device receives a measurement request from a first network device; measuring timing offset information between the first system and the second system in response to the measurement request and based on the first reference signal and the second reference signal, the timing offset information comprising: SFN deviations and boundary deviations, the boundary deviations including deviations of at least one of subframe boundaries or deviations of slot boundaries, and deviations of frame boundaries, wherein the deviations of subframe boundaries include a real number of slots, the deviations of slot boundaries include a real number of minislots or an integer number of minimum time units, or the deviations of slot boundaries include a real number of minislots and an integer number of minimum time units; and sending the measurement result of the timing deviation information to the first network equipment. By adopting the embodiment of the invention, the reliability of the acquired timing deviation between the systems can be improved, and the synchronization performance between the systems can be enhanced.

Description

Method for acquiring timing deviation and related equipment

Technical Field

The present application relates to the field of communications technologies, and in particular, to a method for acquiring a timing offset and a related device.

Background

Currently, communication technology is rapidly developed to meet the increasing communication demands of users. For example, in order to meet the capacity demand and coverage demand of users, a Dual Connection (abbreviated as DC) technology is widely used. The dual connectivity technology is a technology for providing a service for a User Equipment through a plurality of base stations, a Long Term Evolution (LTE) network is deployed in a dual connectivity manner, and the User Equipment (UE) can simultaneously establish a connection with a Master base station (MN) and a Secondary base Station (SN) to perform signaling and data interaction, so that the throughput of the UE, particularly the UE at the edge of a cell, can be effectively improved, and the handover failure rate of the UE can be greatly reduced by maintaining the connection of the Master base station, thereby reducing the signaling of the UE facing a core network, which is generated by frequent handover. Under the framework, the UE measures and reports timing deviation information between the MN and the SN to the MN, so that the MN can determine system configuration parameters such as Discontinuous Reception (DRX) and power control modes according to the timing deviation information to enhance the synchronization performance between systems.

In order to meet the requirement of flexible deployment of the future 5G network, 3GPP defines different types of subcarrier spacing configurations, including 15KHz, 30KHz, 60KHz, 120KHz, 240KHz, and so on; while LTE networks only define one type of subcarrier spacing configuration, namely 15 KHz. Currently, in an LTE network, a UE can measure three measurement results, namely SFN deviation, Frame boundary deviation and Subframe boundary deviation, by measuring a System Frame Number (SFN) and a Subframe Timing deviation (SSTD) between a primary serving cell of an MN and a primary serving cell of an SN, and report the measurement results to the MN. Wherein the SFN bias comprises an integer number of system frames; the deviation of the frame boundary includes an integer number of subframes; the deviation of the subframe boundary includes an integer number of 10Ts, 1 Ts being 1/(15000 × 2048) seconds. However, with the continuous development of communication networks, the Transmission Time Interval (abbreviated as TTI) of a future 5G network is shortened to one timeslot, which requires a lower communication processing delay, and if the inter-system timing offset still includes only SFN offset and subframe timing offset, the processing Time accuracy requirement of the 5G network cannot be met, which results in lower reliability of the acquired inter-system timing offset.

Disclosure of Invention

The embodiment of the invention provides a method and related equipment for acquiring timing deviation, which can improve the reliability of the acquired timing deviation between systems and enhance the synchronization performance between the systems.

In a first aspect, an embodiment of the present invention provides a method for acquiring a timing offset, including:

the communication device receives a measurement request from a first network device; responding to the measurement request, and measuring timing deviation information between the first system and the second system according to the first reference signal and the second reference signal, wherein the timing deviation information comprises: SFN deviation and boundary deviation, the boundary deviation including at least one of deviation of a subframe boundary or deviation of a slot boundary, and deviation of a frame boundary, wherein the deviation of the subframe boundary includes a real number of slots, the deviation of the slot boundary includes a real number of minislots or an integer number of minimum time units, or the deviation of the slot boundary includes a real number of minislots and an integer number of minimum time units, and the timing deviation information is determined according to subcarrier spacing configuration information of each of the first system and the second system; the communication device sends the measurement result of the timing deviation information to the first network device.

The communication device accesses a first system through a first network device and accesses a second system through a second network device respectively, and receives a first reference signal from the first network device and a second reference signal from the second network device.

In the technical solution claimed in the present application, when receiving a measurement request sent by a network device, a communication device may measure SFN deviation and boundary deviation, where the boundary deviation includes at least one of a deviation of a subframe boundary or a deviation of a slot boundary and timing deviation information of the deviation of the frame boundary, and report a measurement result of the timing deviation information to the network device, so that the network device obtains more accurate timing deviation information, reliability of the obtained inter-system timing deviation may be improved, and synchronization performance between systems may be enhanced.

In one design, the communication device measures timing offset information between the first system and the second system according to the first reference signal and the second reference signal, and may specifically be: the communication equipment carries out timing on a first system through a first reference signal so as to obtain at least one of a subframe boundary or a time slot boundary of the first system and a frame boundary; the communication equipment carries out timing on the second system through the second reference signal so as to obtain at least one of a subframe boundary or a time slot boundary of the second system and a frame boundary; the communication equipment respectively calculates the difference value between the timing information of each boundary of the first system and the timing information of each boundary of the second system, and the distance between each boundary of the second system and each boundary of the first system is shortest; and the communication equipment processes the difference values to obtain the boundary deviation.

In one design, the communication device may further take a frame boundary, a subframe boundary, or a slot boundary of the first system as a first boundary and a frame boundary, a subframe boundary, or a slot boundary of the second system as a second boundary; determining a measurement boundary for acquiring timing deviation information according to subcarrier interval configuration information of a first system and a second system respectively; wherein the measurement boundary is a first boundary, and/or a second boundary.

In one design, the subcarrier spacing configuration information of each of the first system and the second system is different, the measurement boundary is a frame boundary, a subframe boundary, or a slot boundary of the first system, the subcarrier spacing of the first system is smaller than the subcarrier spacing of the second system, and each boundary of the first system is temporally aligned with a corresponding boundary of the second system.

In one design, the communication device measures timing offset information between the first system and the second system according to the first reference signal and the second reference signal, and may specifically be: the communication equipment takes the frame boundary, the subframe boundary or the time slot boundary of the first system as a first boundary and takes the frame boundary, the subframe boundary or the time slot boundary of the second system as a second boundary; determining a measurement boundary, wherein the measurement boundary is a first boundary or a second boundary; the communication equipment records first timing information of a system where the measurement boundary is located, and records second timing information of the measurement boundary corresponding to another system; the communication device calculates a difference between the first timing information and the second timing information; the communication equipment processes the difference value to obtain the boundary deviation.

In one design, the communication device measures timing offset information between the first system and the second system according to the first reference signal and the second reference signal, and may specifically be: the communication equipment records absolute time through a clock; the communication equipment determines a first time of a measurement boundary of a first system relative to an absolute time and determines a second time of a measurement boundary of a second system relative to the absolute time, wherein the measurement boundary of the first system is a frame boundary, a subframe boundary or a time slot boundary of the first system, and the measurement boundary of the second system is a frame boundary, a subframe boundary or a time slot boundary of the second system; the communication device calculating a difference between the first time and the second time; the communication equipment processes the difference value to obtain the boundary deviation.

In one design, the communication device may further send, to the first network device, first indication information indicating that the length of a time unit corresponding to each offset included in the timing offset information is the same as the length of a time unit of the first system or a time unit of the second system, where the time unit includes a frame, a subframe, a slot, a minislot, or a minimum time unit.

In one design, the timing offset information may include a length of a time unit corresponding to each offset that is the same as a length of a time unit of the designated subcarrier spacing configuration information.

In one design, the timing offset information may further include an offset of a minislot boundary, the offset of the minislot boundary including an integer number of minimum time units.

In one design, the communication device may further measure timing deviation information between the first system and a third system, and/or timing deviation information between the third system and the second system, where the third system is a system in which a third network device is located, and the communication device is further connected to the third network device.

In one design, the communication device compares timing offset information between the third system and the first system with timing offset information between the first system and the second system to obtain first difference information; and/or comparing the timing deviation information between the third system and the second system with the timing deviation information between the first system and the second system to obtain second difference information; the communication device sends the measurement result of the first difference information and/or the second difference information to the first network device.

In a second aspect, an embodiment of the present invention provides a method for acquiring a timing offset, including:

the first network equipment sends a measurement request to the communication equipment; the first network equipment receives a measurement result of timing deviation information from the communication equipment, wherein the timing deviation information is the timing deviation information between the first system and the second system; the communication device accesses the first system through the first network device and accesses the second system through the second network device, and the timing deviation information includes: SFN deviation and boundary deviation, the boundary deviation comprising at least one of deviation of a subframe boundary or deviation of a slot boundary, and deviation of a frame boundary, wherein the deviation of the subframe boundary comprises a real number of slots, the deviation of the slot boundary comprises a real number of minislots or an integer number of minimum time units, or the deviation of the slot boundary comprises a real number of minislots and an integer number of minimum time units, and the timing deviation information is determined according to subcarrier spacing configuration information of each of the first system and the second system.

In one design, the first network device may further receive first indication information from the communication device, where the first indication information is used to indicate that the length of a time unit corresponding to each offset included in the timing offset information is the same as the length of a time unit of the first system or a time unit of the second system, and the time unit includes a frame, a subframe, a slot, a minislot, or a minimum time unit.

In one design, the timing offset information may further include timing offset information between the first system and a third system, and/or timing offset information between the third system and the second system, where the third system is a system in which a third network device is located, and the communication device is further connected to the third network device.

In one design, the measurement result may further include first difference information and/or second difference information, the first difference information being obtained by comparing, by the communication device, timing offset information between the third system and the first system with timing offset information between the first system and the second system, and the second difference information being obtained by comparing, by the communication device, timing offset information between the third system and the second system with timing offset information between the first system and the second system.

In a third aspect, an embodiment of the present invention provides a computer storage medium for storing computer software instructions for the communication device, which includes a program designed to execute the first aspect.

In a fourth aspect, an embodiment of the present invention provides a computer storage medium for storing computer software instructions for the network device, which includes a program designed to execute the second aspect.

In a fifth aspect, an embodiment of the present invention provides a communication device, where the communication device has a function of implementing a behavior of the communication device in the method example of acquiring a timing offset according to the first aspect. The functions can be realized by hardware, and the functions can also be realized by executing corresponding software by hardware. The hardware or software includes one or more units or modules corresponding to the above functions.

In one design, the communication device may structurally include a receiving unit, a processing unit, and a transmitting unit, where the processing unit is configured to support the communication device to perform corresponding functions in the method for acquiring a timing offset according to the first aspect. The receiving unit and the sending unit are used for supporting communication between the communication equipment and other equipment. The communication device may further comprise a memory unit for coupling with the processing unit, which stores program instructions and data necessary for the communication device. As an example, the processing unit may be a processor, the receiving unit may be a receiver, the transmitting unit may be a transmitter, and the storing unit may be a memory.

In a sixth aspect, an embodiment of the present invention provides a network device, where the network device has a function of implementing the behavior of the network device in the example of the method for acquiring a timing offset according to the second aspect. The functions can be realized by hardware, and the functions can also be realized by executing corresponding software by hardware. The hardware or software includes one or more units or modules corresponding to the above functions.

In one design, the network device may include a receiving unit, a processing unit, and a transmitting unit in a structure, where the processing unit is configured to support the network device to perform corresponding functions in the method for acquiring a timing offset according to the second aspect. The receiving unit and the sending unit are used for supporting communication between the network equipment and other equipment. The network device may also include a storage unit for coupling with the processing unit that stores program instructions and data necessary for the network device. As an example, the processing unit may be a processor, the receiving unit may be a receiver, the transmitting unit may be a transmitter, and the storing unit may be a memory.

In a seventh aspect, an embodiment of the present invention provides a computer program product containing instructions, which when run on a computer, causes the computer to execute the method for acquiring a timing offset according to the first aspect.

In an eighth aspect, an embodiment of the present invention provides a computer program product containing instructions, which when run on a computer, causes the computer to execute the method for acquiring a timing offset according to the second aspect.

In a ninth aspect, an embodiment of the present invention provides a system for acquiring a timing offset, including a communication device, a first network device, and a second network device, where the communication device accesses a first system through the first network device and accesses a second system through the second network device, respectively, and the communication device receives a first reference signal from the first network device and a second reference signal from the second network device, where:

the first network device sending a measurement request to the communication device;

the communication device responds to the measurement request and measures timing deviation information between the first system and the second system according to the first reference signal and the second reference signal, wherein the timing deviation information comprises: a System Frame Number (SFN) deviation and a boundary deviation, the boundary deviation including at least one of a deviation of a subframe boundary or a deviation of a slot boundary, and a deviation of a frame boundary, wherein the deviation of the subframe boundary includes a real number of slots, the deviation of the slot boundary includes a real number of minislots or an integer number of minimum time units, or the deviation of the slot boundary includes a real number of minislots and an integer number of minimum time units, the timing deviation information is determined according to subcarrier spacing configuration information of each of the first system and the second system;

and the communication equipment sends the measurement result of the timing deviation information to the first network equipment.

In one design, the system may further include other devices interacting with the communication device or the network device in the scheme provided in the embodiment of the present invention.

In a tenth aspect, embodiments of the present invention provide a chip system, which includes a processor, and is used for a communication device to implement the functions referred to in the above aspects, for example, to generate or process data and/or information referred to in the above methods.

In one design, the system-on-chip further includes a memory to hold program instructions and data necessary for the communication device. The chip system may be formed by a chip, or may include a chip and other discrete devices.

In an eleventh aspect, embodiments of the present invention provide a chip system, which includes a processor, and is configured to enable a network device to implement the functions recited in the above aspects, for example, to receive or process data and/or information recited in the above methods.

In one design, the system-on-chip further includes a memory to hold program instructions and data necessary for the network device. The chip system may be formed by a chip, or may include a chip and other discrete devices.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments or the background art of the present invention, the drawings required to be used in the embodiments or the background art of the present invention will be described below.

FIG. 1 is an architecture diagram of a system provided by an embodiment of the present invention;

fig. 2 is an interactive schematic diagram of a method for acquiring a timing offset according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of a timing offset according to an embodiment of the present invention;

FIG. 4 is a schematic diagram of a timing deviation information measurement structure according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of another timing offset information measurement structure provided by an embodiment of the present invention;

FIG. 6 is an interactive diagram illustrating another method for obtaining a timing offset according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a communication device according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of another communication device provided in the embodiment of the present invention;

fig. 9 is a schematic structural diagram of another communication device provided in an embodiment of the present invention;

fig. 10 is a schematic structural diagram of a network device according to an embodiment of the present invention;

fig. 11 is a schematic structural diagram of another network device provided in the embodiment of the present invention;

fig. 12 is a schematic structural diagram of another network device according to an embodiment of the present invention.

Detailed Description

The embodiments of the present invention will be described below with reference to the drawings.

It should be understood that the solution of the present application may be applied in various systems, for example: the Global System for Mobile communications (GSM), Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), Time Division Synchronous Code Division Multiple Access (Time Division-Synchronous Code Division Multiple Access (TD-SCDMA), Universal Mobile System (Universal Mobile telecommunications System, UMTS), LTE, etc. with The development of Communication Technology, The solution of The present application can also be used in future networks, such as The Fifth Generation Mobile Communication Technology (The Fifth Generation Mobile Communication Technology, 5G), The New Radio (NR, 852, or The Device System (852, 3583), the present application is not limited.

The present application is described with reference to a network device, which may be a base station, a Transmission Point (TP), a Transmission And reception Point (TRP), a relay device, or other network devices with a function of a base station.

In this application, a communication device is a device with communication functionality and may include a handheld device with wireless communication functionality, an in-vehicle device, a wearable device, a computing device or other processing device connected to a wireless modem, or the like. Communication devices in different networks may be called different names, for example: user Equipment (UE), terminal Equipment, mobile station, subscriber unit, station, cellular telephone, personal digital assistant, wireless modem, wireless communication device, handheld device, laptop, cordless telephone, wireless local loop station, etc. The communication device may refer to a wireless communication device, a wired communication device. The wireless communication device may be a device that provides voice and/or data connectivity to a user, a handheld device with wireless connectivity, or other processing device connected to a wireless modem that may communicate with one or more core networks via a Radio Access Network (e.g., RAN).

In this application, a base station may also be referred to as a base station device, which is a device deployed in a radio access network to provide wireless communication functions. The names of the Base stations may be different in different radio access systems, for example, the Base Station may be a Base Station in GSM or CDMA, such as a Base Transceiver Station (BTS), a Base Station in WCDMA, such as a NodeB, an evolved Node b in LTE, such as an eNB or an e-NodeB (evolved Node b), a Base Station in 5G system, such as an NR (or referred to as a gNB, or referred to as another name), an evolved Node b in LTE that can support both LTE and 5G services after being upgraded, or a Base Station in a future network, which is not listed herein.

In this application, a time unit may refer to a unit corresponding to a time unit. The Time unit refers to a Time unit or a scheduling unit in a Time domain for information Transmission, where the Time unit includes an integer number of symbols in the Time domain, and for example, the Time unit may refer to a system frame (e.g., a radio frame), a subframe, a Slot (Slot), a Mini-Slot (or Sub-Slot), a plurality of aggregated slots, a plurality of aggregated subframes, a symbol, and the like, and may also refer to a Transmission Time Interval (TTI), which is not limited in this application. For example, one or more time unit time domains of one time unit may include real time units of another time unit, or one or more time unit time domain of one time unit may have a length equal to a length of a time unit of another time unit of real time unit, and for example, one timeslot/subframe/system frame may include an integer number of symbols, one timeslot/subframe/system frame may include a real number of timeslots, one subframe/system frame may include a real number of timeslots, and one system frame may include an integer number of subframes, or the like, or in a future frame structure, the rest may also exist, including examples, which is not limited in this application.

Referring to fig. 1, fig. 1 is a schematic diagram of a system according to an embodiment of the present invention. Specifically, as shown in fig. 1, the system may include a communication device, a first network device, and a second network device, where the communication device may establish a connection with the first network device and the second network device at the same time, and may perform information transmission with the first network device and the second network device, respectively. Optionally, the first network device and the second network device may be deployed co-sited, that is, the first network device and the second network device may be deployed in one network device; alternatively, the first network device and the second network device may be deployed in different stations, that is, the first network device and the second network device may be deployed independently. Optionally, the first network device and the second network device may communicate with the communication device in a dual connection mode, that is, the communication device may operate in a system in which the first network device is located (i.e., a first system) and a system in which the second network device is located (i.e., a second system) at the same time. Regarding the first network device and the second network device, one of which is MN and the other is SN, there is a timing deviation between the UE and MN and SN, i.e. there is timing deviation information.

Further optionally, the radio access technologies used in the first system and the second system may be the same or different, that is, the types of the network devices of the first network device and the second network device may be the same or different. For example, taking a network device as a base station as an example, the first system and the second system may use LTE technology and 5G NR technology, respectively, that is, the first base station and the second base station may be an LTE base station eNB and a 5G base station gNB, respectively; alternatively, the first system and the second system both use 5G technology, i.e. the first base station and the second base station may both be a gNB, etc., which are not listed here. Further optionally, the subsequent evolution of the 5G system also considers the deployment of multiple connections, and the communication device may further establish connections with multiple (greater than 2) network devices, for example, base stations, and the multiple base stations may communicate with one communication device in a multiple connection mode, that is, the communication device may establish connections with one MN and multiple SNs simultaneously, and under the architecture, multiple timing offset information exists between the UE and the MN and between the UE and the multiple SNs. In this mode, only one MN exists in the plurality of base stations, and the rest of the base stations are SNs.

In this application, the subcarrier spacing configurations of the first system and the second system may be the same or different, or the downlink subcarrier spacing configuration and the uplink subcarrier spacing configuration of the first system or the second system may be the same or different. Different subcarrier interval configurations correspond to different time slot, micro-slot and other time unit lengths. Further, the timing offset information may be used to indicate a difference between timing information (time) received by the communication device at a boundary of each time unit (e.g., system frame, subframe, slot, minislot, etc.) of the first system and timing information received at a boundary of each time unit (e.g., system frame, subframe, slot, minislot, etc.) of the second system, i.e., a boundary offset. The timing offset information may include an SFN offset and a boundary offset, the boundary offset includes at least one of an offset of a subframe boundary or an offset of a slot boundary, and an offset of a frame boundary, and the boundary offset may further include an offset of a micro-slot boundary, and the like.

The application discloses a method, a communication device, a network device and a system for acquiring timing deviation, which are beneficial to improving the reliability of the acquired timing deviation between systems and enhancing the synchronization performance between the systems. The details are described below.

Fig. 2 is an interactive schematic view of a method for acquiring a timing offset according to an embodiment of the present invention. The communication equipment is respectively accessed to a first system through first network equipment and a second system through second network equipment, receives a first reference signal from the first network equipment, and obtains the timing of the first system through the first reference signal; and receiving a second reference signal from the second network device, and obtaining timing with a second system through the second reference signal. When the first network device is a MN, the second network device may be a SN; optionally, when the first network device is an SN, the second network device may be an MN. Specifically, the communication device may establish a connection with a Primary serving Cell (PCell) of the MN and a Primary serving Cell (PSCell) of the SN, receive a first reference signal from the PCell of the MN, and receive a second reference signal from the PSCell of the SN, and the communication device is in a connected state. The first Reference Signal includes a Primary Synchronization Signal (PSS), a Secondary Synchronization Signal (SSS), a Demodulation Reference Signal (DM-RS), and the like, and the second Reference Signal is similar to the first Reference Signal.

Specifically, as shown in fig. 2, the method for acquiring a timing offset according to an embodiment of the present invention may include the following steps:

201. the first network device sends a measurement request to the communication device.

Specifically, after the communication device accesses the first system through the first network device and accesses the second system through the second network device, the first network device may send a measurement request to the communication device, instruct the communication device to measure and report timing offset information between the two systems. It should be noted that, in the embodiment of the present invention, the first network device sends a measurement request to the communication device, and receives a measurement result reported by the communication device; in other optional embodiments, the second network device may also send a measurement request to the communication device, and receive a measurement result reported by the communication device, that is, a reporting object of the measurement result may be consistent with a sender of the measurement request.

Optionally, the measurement request may include designated subcarrier spacing configuration information. The first network device may instruct the communication device to measure a difference between timing information of two systems connected to the communication device by transmitting a measurement request to the communication device; and the communication equipment converts the difference value into the deviation of each boundary contained in the timing deviation information according to the length of each time unit corresponding to the specified subcarrier interval configuration information, and reports the measurement result of the boundary deviation to the communication equipment. The length of a time unit may include a unit duration of a frame, a subframe, a slot, a micro-slot, a minimum time unit, etc.

Further optionally, the measurement request may be a signaling sent by the first network device, such as a base station, for example, a Radio Resource Control (RRC) signaling, which is not limited in this application.

202. The communication device responds to the measurement request and measures timing offset information between the first system and the second system based on the first reference signal and the second reference signal.

Wherein the timing offset information may include: SFN deviation and boundary deviation, the boundary deviation may include at least one of deviation of a subframe boundary or deviation of a slot boundary, and deviation of a frame boundary, and the timing deviation information is determined according to subcarrier spacing configuration information of each of the first system and the second system.

Optionally, the communication device may obtain SFN information of the first system according to the first reference signal, and obtain SFN information of the second system according to the second reference signal; and calculating a difference value between the SFN information of the first system and the SFN information of the second system, and further acquiring the SFN deviation.

Wherein, regarding the SFN deviation, the terminal device obtains timing synchronization with the first system through the first reference signals (e.g. PSS and SSS), and obtains the MIB message through the first reference signal (e.g. DM-RS) demodulation PBCH, and further obtains the SFN of the first system through the MIB message. The terminal equipment obtains timing synchronization with the second system through a second reference signal (such as PSS and SSS), demodulates PBCH through the second reference signal (such as DM-RS) to obtain an MIB message, and further obtains the SFN of the second system through the MIB message. The terminal device calculates a difference between the SFN of the first system and the SFN of the second system, and then obtains the SFN offset included in the timing offset information. The deviation of the SFN needs to take a module value of 1024, or the deviation of the SFN between the first system and the second system needs to take a module value of 1024 × 1024 considering that NR has a hyper frame number.

Optionally, the communication device measures timing offset information between the first system and the second system according to the first reference signal and the second reference signal, and specifically may be: the communication equipment carries out timing on a first system through a first reference signal so as to obtain at least one of a subframe boundary or a time slot boundary of the first system and a frame boundary; timing the second system through the second reference signal to obtain at least one of a subframe boundary or a time slot boundary of the second system and a frame boundary; respectively calculating the difference value between the timing information of each boundary of the first system and the timing information of each boundary of the second system, wherein the distance between each boundary of the second system and each boundary of the first system is shortest; and processing each difference value to obtain boundary deviation.

In regard to the deviation of the frame boundary, after the communication device performs the conversion processing, an integer number of subframes is obtained, and the deviation may be a deviation of 10 subframes at most, that is, the length of a time unit corresponding to one system frame is smaller than or equal to the length of a time unit corresponding to one system frame.

The communication device obtains real number of time slots, namely integer number or fractional number of time slots, after conversion processing on the deviation of the subframe boundary, and the deviation of the subframe boundary is smaller than or equal to the length of a time unit corresponding to one subframe, namely 1 ms. For example, if the length of a time unit (i.e., a slot) for the deviation process of the subframe boundary is small, i.e., corresponds to large subcarrier spacing configuration information, the deviation of the subframe boundary may include an integer number of slots; the communication device may round down the difference between the timing information of the two system subframe boundaries according to the slot granularity, thereby obtaining the deviation of the subframe boundaries. If the length of the time unit (i.e., slot) for processing is large, i.e., corresponding to small subcarrier spacing configuration information, the deviation of the subframe boundary may include a fraction of a slot; the communication device may select one of the following ratios, for example, 0, 1/8, 1/4, 3/8, 1/2, 5/8, 3/4, 7/8, etc., according to the slot granularity truncation, where M/(2, power N), and M and N are integers, to obtain the subframe boundary deviation. The ratio between different subcarrier spacing configuration information is fixed to the power N of 2.

And the communication equipment obtains a plurality of real micro time slots, or an integer number of minimum time units, or a plurality of real micro time slots and an integer number of minimum time units after conversion processing on the deviation of the time slot boundary. A micro-slot is defined as an integer number of Orthogonal Frequency Division Multiplexing (OFDM) symbols, wherein the integer number may take the

value

1 or 2, etc. Similar to the scaling process of the deviation of the subframe boundary, if the length of the time unit (i.e., the micro slot) for the deviation process of the slot boundary is small, i.e., corresponds to the large subcarrier spacing configuration information, the deviation of the slot boundary may include an integer number of micro slots; the communication device may round down the difference between the timing information of the two system slot boundaries according to the micro-slot granularity, thereby obtaining an integer number of micro-slots contained in the deviation of the slot boundaries. If the length of the time unit (i.e., the micro slot) for the deviation process of the slot boundary is large, i.e., corresponds to the small subcarrier spacing configuration information, the deviation of the slot boundary may include a fractional micro slot; the communication device may select one of the ratios, for example, 0, 1/8, 1/4, 3/8, 1/2, 5/8, 3/4, 7/8, etc., by truncating the difference between the timing information of the two system slot boundaries according to the granularity of the micro-slots, i.e., M/(power N of 2), where M and N are both integers, to obtain a fraction of the micro-slots in the deviation of the slot boundaries. In addition, the deviation of the slot boundary may also include an integer number of minimum time units, i.e., the deviation of the remaining slot boundary. Wherein the minimum time unit is defined as 1/(480000 4096) seconds.

Optionally, the timing offset information may further include an offset of the minislot boundary, and the offset of the minislot boundary may include an integer number of minimum time units.

Optionally, if the subframe length is equal to the slot length, the offset of the subframe boundary does not need to be obtained, and the system overhead can be reduced. That is, when the subframe length is equal to the slot length, the timing offset information measured by the communication device may include: SFN deviation, deviation of frame boundary and deviation of slot boundary, where the deviation of subframe boundary defaults to 0.

Optionally, the communication device uses a frame boundary, a subframe boundary, or a slot boundary of the first system as the first boundary, and uses a frame boundary, a subframe boundary, or a slot boundary of the second system as the second boundary; determining a measurement boundary for acquiring timing deviation information according to subcarrier interval configuration information of a first system and a second system respectively; wherein the measurement boundary is a first boundary, and/or a second boundary.

Optionally, the subcarrier spacing configuration information of the first system and the subcarrier spacing configuration information of the second system are different, the measurement boundary is a frame boundary, a subframe boundary or a slot boundary of the first system, the subcarrier spacing of the first system is smaller than the subcarrier spacing of the second system, and each boundary of the first system is aligned with a corresponding boundary of the second system in time.

Taking the schematic diagram of the timing offset structure shown in fig. 3 as an example, a system with 15KHz subcarrier spacing, a system with 30KHz subcarrier spacing, and a system with 60KHz subcarrier spacing satisfy the requirement of time alignment at the #0 subframe boundary; a system with a subcarrier spacing of 30KHz is satisfied with being aligned in time at the 1-slot boundary of the #1 subframe with a system with a subcarrier spacing of 60KHz at the 3-slot boundary of the #1 subframe. In addition, the system with 30KHz subcarrier spacing does not meet the time alignment at the 1-slot boundary of the #1 subframe with the system with 60KHz subcarrier spacing at the 2-slot boundary of the #1 subframe.

Optionally, the measuring, by the communication device, timing offset information between the first system and the second system according to the first reference signal and the second reference signal may specifically be: the communication equipment takes the frame boundary, the subframe boundary or the time slot boundary of the first system as a first boundary and takes the frame boundary, the subframe boundary or the time slot boundary of the second system as a second boundary; determining a measurement boundary, wherein the measurement boundary is a first boundary or a second boundary; recording first timing information of a system where the measurement boundary is located, and recording second timing information of the measurement boundary corresponding to another system; calculating a difference between the first timing information and the second timing information; and processing the difference to obtain the boundary deviation between the first system and the second system.

Taking the schematic structural diagram of Timing deviation information measurement shown in fig. 4 as an example, the communication device determines a subframe boundary of the LTE system as a measurement boundary according to the LTE system Timing (LTE Timing), records first Timing information of the LTE system where the subframe boundary of the LTE system is located, and records second Timing information of the NR system where the subframe boundary of the LTE system corresponds to the subframe boundary of the NR system, where the second Timing information belongs to the NR system Timing (NR Timing). The communication device calculates a difference between the first timing information and the second timing information, and obtains timing deviation information through a conversion process.

It should be noted that the first timing information may include an integer number of SFN, an integer number of subframes, an integer number of timeslots, and a sum of an integer number of minimum time units, and may further include an integer number of minislots. The second timing information may include a sum of an integer number of SFNs, an integer number of subframes, an integer number of slots, and an integer number of minimum time units, and may further include an integer number of minislots. Obtaining SFN deviation included by the timing deviation information through a difference value between the SFN of the first timing information and the SFN of the second timing information; the difference between the remaining first timing information and the remaining second timing information needs to be converted according to the length of each time unit (including subframe, slot, micro-slot, etc.), so as to obtain the boundary deviation included in the timing deviation information, that is, the deviation includes at least one of the deviation of the subframe boundary or the deviation of the slot boundary, and the deviation of the frame boundary.

Optionally, the communication device measures timing offset information between the first system and the second system according to the first reference signal and the second reference signal, and specifically may be: the communication equipment records absolute time through a clock; determining a first time of a measurement boundary of a first system relative to an absolute time, and determining a second time of a measurement boundary of a second system relative to the absolute time, wherein the measurement boundary of the first system is a frame boundary, a subframe boundary or a time slot boundary of the first system, and the measurement boundary of the second system is a frame boundary, a subframe boundary or a time slot boundary of the second system; calculating a difference between the first time and the second time; the communication equipment processes the difference value to obtain the boundary deviation between the first system and the second system. Optionally, the clock is typically a high precision clock.

Taking the schematic diagram of the timing deviation information measurement shown in fig. 5 as an example, the communication device records the absolute time by one clock (e.g., high-precision clock MC). The communication equipment determines a subframe boundary of an LTE system according to LTE system Timing (LTE Timing) and determines a subframe boundary of an NR system according to NR system Timing (NR Timing) to be used as a measurement boundary, records a first time of the subframe boundary of the LTE system relative to MC absolute time and a second time of the subframe boundary of the NR system relative to MC absolute time, calculates a difference value between the first time and the second time, and obtains Timing deviation information by converting the difference value.

It should be noted that, the difference is rounded down according to the length of the time unit of the system frame to obtain the SFN offset included in the timing offset information; the remaining difference values are converted according to the length of each time unit (including subframe, slot, micro-slot, etc.) to obtain the boundary deviation included in the timing deviation information, that is, the deviation includes at least one of the deviation of the subframe boundary or the deviation of the slot boundary, and the deviation of the frame boundary. For example, if the slot boundary is determined as the measurement boundary, the slot boundary of the LTE system is determined as [10, 2, 3], and the slot boundary of the NR system is determined as [10, 2, 3], then the difference between the first time of the slot boundary of the LTE relative to the absolute time of the MC and the second time of the slot boundary of the NR relative to the absolute time of the MC is obtained through the conversion processing to obtain the timing offset information; if the position of the slot boundary of the LTE system is determined as [10, 2, 3] and the position of the slot boundary of the NR system is determined as [11, 3, 3], the difference between the first time and the second time needs to be deducted by the difference [1, 1, 0] between the positions of the slot boundaries, and then the timing offset information is obtained through a conversion process. Wherein [10, 2, 3] indicates SFN equal to 10, subframe equal to 2, and slot equal to 3; [11, 3, 3] indicates SFN equal to 11, sub-frame equal to 3, time slot equal to 3; [1, 1, 0] indicates SFN equals 1, sub-frame equals 1, and slot equals 0.

It should be noted that, the communication device may combine the schematic diagrams of the timing deviation information measurement shown in fig. 4 and fig. 5 to perform the measurement of the timing deviation information, for example: the communication equipment can record absolute time through an MC clock; taking a frame boundary, a subframe boundary or a time slot boundary of a first system as a first boundary, and taking a frame boundary, a subframe boundary or a time slot boundary of a second system as a second boundary; determining a measurement boundary, wherein the measurement boundary is a first boundary and a second boundary; recording first timing information of a system where a first boundary is located and first time relative to MC absolute time, and recording second timing information of a system where a second boundary is located and second time relative to MC absolute time; calculating a first difference between the first timing information and the second timing information, and a second difference between the first timing and the second timing; the second difference may be calibrated for possible timing errors by the first difference because the expiration of the absolute clock may result in a full clear; and converting the second difference to obtain timing deviation information.

Optionally, the communication device may further send, to the first network device, first indication information, where the first indication information is used to indicate that lengths of time units corresponding to the respective offsets included in the timing offset information are the same as lengths of time units of the first system or time units of the second system, and each time unit includes a frame, a subframe, a slot, a minislot, or a minimum time unit. Further optionally, when the first indication information is used to indicate that the length of the time unit corresponding to each offset included in the timing offset information is the same as the length of the time unit of the second system, the first network device may scale each boundary offset included in the timing offset information sent by the communication device according to the length of the time unit of the second system.

Optionally, the length of the time unit corresponding to each offset included in the timing offset information is the same as the length of the time unit of the designated subcarrier spacing configuration information.

It should be noted that the subcarrier spacing configuration information may also be specified by a default protocol, for example, the subcarrier spacing configuration information is specified to be 480KHz, 240KHz, 120KHz, etc. The communication equipment can convert the difference between the timing information of the two systems according to the length of each time unit corresponding to the default subcarrier interval configuration information to obtain the boundary deviation contained in the timing deviation information; accordingly, the first network device may scale the boundary offset included in the timing offset information sent by the communication device according to the length of each time unit corresponding to the default subcarrier spacing configuration information.

203. The communication device sends the measurement result of the timing deviation information to the first network device.

Optionally, the first indication information may be carried in the timing deviation information and sent to the first network device.

In this embodiment, when receiving a measurement request sent by a first network device, a communication device can obtain more accurate timing offset information by obtaining timing offset information between two systems, which specifically includes at least one of a deviation of a subframe boundary or a deviation of a slot boundary, an SFN deviation, and a deviation of a frame boundary, and sending a measurement result of the timing offset information to the first network device, so as to improve reliability of the obtained timing offset between the systems and enhance synchronization performance between the systems.

Fig. 6 is an interactive schematic diagram of another method for obtaining a timing offset according to an embodiment of the present invention. The communication equipment can be respectively accessed to a first system through first network equipment, a second system through second network equipment and a third system through third network equipment, receives a first reference signal from the first network equipment, and obtains the timing of the first system through the first reference signal; receiving a second reference signal from the second network device, and obtaining timing with a second system through the second reference signal; and receiving a third reference signal from the third network device, the timing with the third system being obtained by the third reference signal. When the first network device is a MN, the second network device may be SN1, and the third network device may be SN2 (or the second network device is SN2 and the third network device is SN 1); optionally, when the first network device is SN1, the second network device may be a MN, and the third network device may be SN2 (or the second network device is SN2, and the third network device is a MN); alternatively, when the first network device is SN2, the second network device may be a MN, and the third network device may be SN1 (or the second network device is SN1 and the third network device is a MN). Specifically, the communication device may establish a Multi-Connection (MC) with the primary serving cell of the MN, the primary serving cell of the SN1, and the primary serving cell of the SN2, receive a first reference signal from the PCELL of the MN, receive a second reference signal from the PSCELL of the SN1, and receive a third reference signal from the PSCELL of the SN2, and the communication device is in a connected state. The first reference signal comprises PSS, SSS, DM-RS and the like, and the second reference signal and the third reference signal are respectively similar to the first reference signal.

Specifically, as shown in fig. 6, the method for acquiring a timing offset according to the embodiment of the present invention may include the following steps:

601. the first network device sends a measurement request to the communication device.

Specifically, after the communication device accesses the first system through the first network device, accesses the second system through the second network device, and accesses the third system through the third network device, the first network device may send a measurement request to the communication device, instruct the communication device to measure and report timing offset information between the three systems. It should be noted that, in the embodiment of the present invention, the first network device sends a measurement request to the communication device, and receives a measurement result reported by the communication device; in other optional embodiments, the second network device may send a measurement request to the communication device and receive a measurement result reported by the communication device, or the third network device sends a measurement request to the communication device and receives a measurement result reported by the communication device. That is, the reporting object of the measurement result may be consistent with the sender of the measurement request.

Optionally, the measurement request may include designated subcarrier spacing configuration information. The first network equipment can indicate the communication equipment to measure the difference between the timing information of every two of the three systems connected with the communication equipment by sending a measurement request to the communication equipment, and various pairwise combination modes exist, so that a plurality of differences exist; and the communication equipment converts the multiple difference values into deviations of all boundaries contained in the timing deviation information respectively according to the lengths of all time units corresponding to the appointed subcarrier interval configuration information, and reports the measurement results of the boundary deviations to the communication equipment. The length of a time unit may include a unit duration of a frame, a subframe, a slot, a micro-slot, a minimum time unit, etc.

Further optionally, the measurement request may be a signaling sent by the first network device, such as a base station, for example, an RRC signaling, which is not limited in this application.

602. The communication device responds to the measurement request and measures timing deviation information between each two systems according to the first reference signal, the second reference signal and the third reference signal.

Specifically, the communication device may measure timing offset information between the first system and the second system according to the first reference signal and the second reference signal, where the timing offset information between the first system and the second system is determined according to subcarrier spacing configuration information of each of the first system and the second system; measuring timing deviation information between the first system and the third system according to the first reference signal and the third reference signal, wherein the timing deviation information between the first system and the third system is determined according to subcarrier interval configuration information of the first system and the third system; and measuring timing deviation information between the second system and the third system according to the second reference signal and the third reference signal, wherein the timing deviation information between the second system and the third system is determined according to the subcarrier spacing configuration information of the second system and the third system respectively.

Wherein any of the timing offset information may include: SFN deviation and boundary deviation, which may include at least one of deviation of subframe boundary or deviation of slot boundary, and deviation of frame boundary.

Optionally, the communication device may obtain SFN information of the first system according to the first reference signal, and obtain SFN information of the second system according to the second reference signal; and calculating a difference value between the SFN information of the first system and the SFN information of the second system, and further acquiring the SFN deviation between the first system and the second system. Similarly, the communication device may obtain SFN information of the first system according to the first reference signal, and obtain SFN information of the third system according to the third reference signal; and calculating a difference value between the SFN information of the first system and the SFN information of the third system, and further acquiring the SFN deviation between the first system and the third system. The communication device may obtain SFN information of the second system according to the second reference signal, and obtain SFN information of the third system according to the third reference signal; and calculating a difference value between the SFN information of the second system and the SFN information of the third system, and further acquiring the SFN deviation between the second system and the third system.

Wherein, regarding deviation of SFN between the first system and the second system, the terminal equipment obtains timing synchronization with the first system through the first reference signals (e.g. PSS and SSS), and obtains MIB message through the first reference signal (e.g. DM-RS) demodulation of PBCH, and further obtains SFN of the first system through the MIB message. The terminal equipment obtains timing synchronization with the second system through a second reference signal (such as PSS and SSS), demodulates PBCH through the second reference signal (such as DM-RS) to obtain an MIB message, and further obtains the SFN of the second system through the MIB message. The terminal device calculates a difference between the SFN of the first system and the SFN of the second system, and further obtains the SFN offset between the first system and the second system included in the timing offset information. The deviation of the SFN between the first system and the second system needs to take a module value of 1024, or the deviation of the SFN between the first system and the second system needs to take a module value of 1024 × 1024 considering that NR has a hyper frame number. It should be noted that the above-mentioned specific manner of measuring the SFN deviation between the first system and the second system is also applicable to measuring the SFN deviation between the first system and the third system, or the SFN deviation between the second system and the third system.

Optionally, the communication device measures timing offset information between the first system and the second system according to the first reference signal and the second reference signal, and specifically may be: the communication equipment carries out timing on a first system through a first reference signal so as to obtain at least one of a subframe boundary or a time slot boundary of the first system and a frame boundary; timing the second system through the second reference signal to obtain at least one of a subframe boundary or a time slot boundary of the second system and a frame boundary; respectively calculating the difference value between the timing information of each boundary of the first system and the timing information of each boundary of the second system, wherein the distance between each boundary of the second system and each boundary of the first system is shortest; and processing each difference value to obtain the boundary deviation between the first system and the second system. It should be noted that the above-mentioned specific manner of measuring the boundary deviation between the first system and the second system is also applicable to measuring the boundary deviation between the first system and the third system, or the boundary deviation between the second system and the third system.

The communication device obtains real number of time slots, namely integer number or fractional number of time slots, after conversion processing on the deviation of the subframe boundary, and the deviation of the subframe boundary is smaller than or equal to the length of a time unit corresponding to one subframe, namely 1 ms. For example, if the length of a time unit (i.e., a slot) for the deviation process of the subframe boundary is small, i.e., corresponds to large subcarrier spacing configuration information, the deviation of the subframe boundary may include an integer number of slots; the communication device may round down the difference between the timing information of every two system subframe boundaries according to the slot granularity, thereby obtaining the deviation of the subframe boundaries. If the length of the time unit (i.e., slot) for processing is large, i.e., corresponding to small subcarrier spacing configuration information, the deviation of the subframe boundary may include a fraction of a slot; the communication device may select one of the following ratios, for example, 0, 1/8, 1/4, 3/8, 1/2, 5/8, 3/4, 7/8, etc., according to the slot granularity truncation, where M/(2, power N), and M and N are integers, to obtain the subframe boundary deviation, where the difference between the timing information of every two system subframe boundaries. The ratio between different subcarrier spacing configuration information is fixed to the power N of 2.

And the communication equipment obtains a plurality of real micro time slots, or an integer number of minimum time units, or a plurality of real micro time slots and an integer number of minimum time units after conversion processing on the deviation of the time slot boundary. A minislot is defined as an integer number of OFDM symbols, where the integer may take the

value

1 or 2, and so on. Similar to the scaling process of the deviation of the subframe boundary, if the length of the time unit (i.e., the micro slot) for the deviation process of the slot boundary is small, i.e., corresponds to the large subcarrier spacing configuration information, the deviation of the slot boundary may include an integer number of micro slots; the communication device may round down the difference between the timing information of every two system slot boundaries according to the micro-slot granularity, thereby obtaining an integer number of micro-slots contained in the deviation of the slot boundaries. If the length of the time unit (i.e., the micro slot) for the deviation process of the slot boundary is large, i.e., corresponds to the small subcarrier spacing configuration information, the deviation of the slot boundary may include a fractional micro slot; the communication device may select one of the following ratios, for example, 0, 1/8, 1/4, 3/8, 1/2, 5/8, 3/4, 7/8, etc., by truncating the difference between the timing information of every two system slot boundaries according to the granularity of the micro-slots, i.e., M/(2 to the power of N), where M and N are integers, to obtain a fraction of the micro-slots in the deviation of the slot boundaries. In addition, the deviation of the slot boundary may also include an integer number of minimum time units, i.e., the deviation of the remaining slot boundary. Wherein the minimum time unit is defined as 1/(480000 4096) seconds.

Optionally, the timing deviation information may further include a deviation of a micro slot boundary, and the deviation of the micro slot boundary may include an integer number of minimum time units.

Optionally, the communication device root takes the frame boundary, the subframe boundary or the slot boundary of the first system as the first boundary, and takes the frame boundary, the subframe boundary or the slot boundary of the second system as the second boundary; determining a measurement boundary for acquiring timing deviation information according to subcarrier interval configuration information of a first system and a second system respectively; wherein the measurement boundary is a first boundary, and/or a second boundary. It should be noted that the specific manner of determining the measurement boundary of the timing deviation information between the first system and the second system described above is also applicable to determining the measurement boundary of the timing deviation information between the first system and the third system, or determining the measurement boundary of the timing deviation information between the second system and the third system.

Optionally, the subcarrier spacing configuration information of each of the first system and the second system is different, the measurement boundary of the timing offset information between the first system and the second system is a frame boundary, a subframe boundary or a slot boundary of the first system, the subcarrier spacing of the first system is smaller than the subcarrier spacing of the second system, and each boundary of the first system is aligned with the corresponding boundary of the second system in time. It should be noted that the specific manner of determining the measurement boundary of the timing deviation information between the first system and the second system described above is also applicable to determining the measurement boundary of the timing deviation information between the first system and the third system, or determining the measurement boundary of the timing deviation information between the second system and the third system.

Optionally, the communication device measures timing offset information between the first system and the second system according to the first reference signal and the second reference signal, and specifically may be: the communication equipment takes the frame boundary, the subframe boundary or the time slot boundary of the first system as a first boundary and takes the frame boundary, the subframe boundary or the time slot boundary of the second system as a second boundary; determining a measurement boundary, wherein the measurement boundary is a first boundary or a second boundary; recording first timing information of a system where the measurement boundary is located, and recording second timing information of the measurement boundary corresponding to another system; calculating a difference between the first timing information and the second timing information; and processing the difference to obtain the boundary deviation between the first system and the second system. It should be noted that the above-mentioned specific manner of measuring the boundary deviation between the first system and the second system is also applicable to measuring the boundary deviation between the first system and the third system, or the boundary deviation between the second system and the third system.

Optionally, the communication device measures timing offset information between the first system and the second system according to the first reference signal and the second reference signal, and specifically may be: the communication equipment records absolute time through a clock; determining a first time of a measurement boundary of a first system relative to an absolute time, and determining a second time of a measurement boundary of a second system relative to the absolute time, wherein the measurement boundary of the first system is a frame boundary, a subframe boundary or a time slot boundary of the first system, and the measurement boundary of the second system is a frame boundary, a subframe boundary or a time slot boundary of the second system; calculating a difference between the first time and the second time; the communication equipment processes the difference value to obtain the boundary deviation between the first system and the second system. Optionally, the clock is typically a high precision clock. It should be noted that the above-mentioned specific manner of measuring the boundary deviation between the first system and the second system is also applicable to measuring the boundary deviation between the first system and the third system, or the boundary deviation between the second system and the third system.

Optionally, the communication device may further send, to the first network device, first indication information, where the first indication information is used to indicate that lengths of time units corresponding to the respective offsets included in the timing offset information are the same as lengths of a time unit of the first system, a time unit of the second system, or a time unit of the third system, and the time unit includes a frame, a subframe, a slot, a minislot, or a minimum time unit.

It should be noted that the subcarrier spacing configuration information may also be specified by a default protocol, for example, the subcarrier spacing configuration information is specified to be 480KHz, 240KHz, 120KHz, etc. The communication equipment can convert the difference between the timing information of every two systems according to the length of each time unit corresponding to the default subcarrier interval configuration information to obtain the boundary deviation contained in the timing deviation information; accordingly, the first network device may scale the boundary offset included in the timing offset information sent by the communication device according to the length of each time unit corresponding to the default subcarrier spacing configuration information.

603. The communication device sends the measurement result of the timing deviation information to the first network device.

Specifically, the communication device may send at least one of timing offset information between the first system and the second system, timing offset information between the first system and the third system, or timing offset information between the third system and the second system to the first network device.

Optionally, after the communication device measures the timing deviation information between the first system and the second system and the timing deviation information between the first system and the third system, the communication device may compare the timing deviation information between the first system and the third system with the timing deviation information between the first system and the second system to obtain first difference information, and send a measurement result of the first difference information to the first network device.

Optionally, after the communication device measures the timing deviation information between the first system and the second system and the timing deviation information between the third system and the second system, the communication device may compare the timing deviation information between the third system and the second system with the timing deviation information between the first system and the second system to obtain second difference information, and send a measurement result of the second difference information to the first network device.

Optionally, after the communication device measures the timing deviation information between the first system and the second system, the timing deviation information between the first system and the third system, and the timing deviation information between the third system and the second system, the timing deviation information between the first system and the third system and the timing deviation information between the first system and the second system may be compared to obtain first difference information, the timing deviation information between the third system and the second system and the timing deviation information between the first system and the second system may be compared to obtain second difference information, and a measurement result of the first difference information and a measurement result of the second difference information are sent to the first network device.

In this embodiment, when receiving a measurement request sent by a first network device, a communication device can obtain more accurate timing offset information by obtaining timing offset information between every two systems in three systems, specifically including at least one of a deviation of a subframe boundary or a deviation of a slot boundary, an SFN deviation, and a deviation of a frame boundary, and sending a measurement result of the timing offset information to the first network device, so as to improve reliability of the obtained timing offset between the systems and enhance synchronization performance between the systems.

Referring to fig. 7, which is a schematic diagram of a possible structure of a communication device according to an embodiment of the present invention, referring to fig. 7, the communication device may include: a receiving unit 701, a processing unit 702 and a transmitting unit 703. The communication device accesses a first system through a first network device and accesses a second system through a second network device, respectively, and receives a first reference signal from the first network device and a second reference signal from the second network device. Wherein these units may perform the respective functions of the communication device in the above method examples, e.g. the receiving unit 701, configured to receive a measurement request from a first network device; a processing unit 702, configured to respond to the measurement request and measure timing offset information between the first system and the second system according to the first reference signal and the second reference signal, where the timing offset information includes: an SFN bias and a boundary bias, the boundary bias including at least one of a bias of a subframe boundary or a bias of a slot boundary, and a bias of a frame boundary, wherein the bias of the subframe boundary includes a real number of slots, the bias of the slot boundary includes a real number of minislots or an integer number of minimum time units, or the bias of the slot boundary includes a real number of minislots and an integer number of minimum time units, the timing bias information is determined according to subcarrier spacing configuration information of each of the first system and the second system; a sending unit 703, configured to send the measurement result of the timing offset information to the first network device.

Optionally, the processing unit 702 may be specifically configured to:

timing the first system with the first reference signal to obtain at least one of a subframe boundary or a slot boundary of the first system and a frame boundary;

timing the second system by the second reference signal to obtain at least one of a subframe boundary or a slot boundary of the second system and a frame boundary;

respectively calculating the difference value between the timing information of each boundary of the first system and the timing information of each boundary of the second system, wherein the distance between each boundary of the second system and each boundary of the first system is shortest;

and processing each difference value to obtain the boundary deviation.

Optionally, the processing unit 702 is further configured to use a frame boundary, a subframe boundary, or a slot boundary of the first system as a first boundary, and use a frame boundary, a subframe boundary, or a slot boundary of the second system as a second boundary;

the processing unit 702 is further configured to determine a measurement boundary for acquiring the timing offset information according to subcarrier spacing configuration information of each of the first system and the second system;

wherein the measurement boundary is the first boundary, and/or the second boundary.

Optionally, the processing unit 702 may be specifically configured to:

taking the frame boundary, the subframe boundary or the time slot boundary of the first system as a first boundary, and taking the frame boundary, the subframe boundary or the time slot boundary of the second system as a second boundary;

determining a measurement boundary, the measurement boundary being the first boundary or the second boundary;

recording first timing information of a system where the measurement boundary is located, and recording second timing information of the measurement boundary corresponding to another system;

calculating a difference between the first timing information and the second timing information;

and processing the difference to obtain the boundary deviation.

Optionally, the processing unit 702 is specifically configured to:

recording absolute time through a clock;

determining a first time of a measurement boundary of the first system relative to the absolute time, and determining a second time of a measurement boundary of the second system relative to the absolute time, wherein the measurement boundary of the first system is a frame boundary, a subframe boundary or a slot boundary of the first system, and the measurement boundary of the second system is a frame boundary, a subframe boundary or a slot boundary of the second system;

calculating a difference between the first time and the second time;

and processing the difference to obtain the boundary deviation.

Optionally, the sending unit 703 is further configured to send first indication information to the first network device, where the first indication information is used to indicate that the length of a time unit corresponding to each offset included in the timing offset information is the same as the length of a time unit of the first system or the length of a time unit of the second system, and the time unit includes a frame, a subframe, a time slot, a minislot, or a minimum time unit.

Optionally, the timing deviation information further includes a deviation of a micro-slot boundary, where the deviation of the micro-slot boundary includes an integer number of minimum time units.

Optionally, the processing unit 702 is further configured to measure timing deviation information between the first system and a third system, and/or timing deviation information between the third system and the second system, where the third system is a system where a third network device is located, and the communication device is further connected to the third network device.

Optionally, the processing unit 702 is further configured to compare timing deviation information between a third system and the first system with timing deviation information between the first system and the second system to obtain first difference information; and/or comparing the timing deviation information between the third system and the second system with the timing deviation information between the first system and the second system to obtain second difference information;

the sending unit 703 is further configured to send the measurement result of the first difference information and/or the second difference information to the first network device.

It should be noted that the division of the unit in the embodiment of the present invention is schematic, and is only a logic function division, and there may be another division manner in actual implementation. Each functional unit 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 integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

In the case of an integrated unit, fig. 8 shows another possible structural diagram of the communication device involved in the above embodiment, and as shown in fig. 8, the communication device may include: a processing unit 802, a receiving unit 803, and a transmitting unit 804. Processing unit 802 may be used to control and manage actions of a communication device, e.g., processing unit 802 may be used to support the communication device performing process 202 in fig. 2, process 302 in fig. 3, etc., and/or other processes for the techniques described herein. The receiving unit 803 and the sending unit 804 may be used to support communication between the communication device and other network entities, for example, the functional units (or modules) or network entities shown in fig. 2 to 7. The communication device may further comprise a memory unit 801 for storing program codes and data of the communication device.

The Processing Unit 802 may be a Processor or a controller, such as a Central Processing Unit (CPU), a general-purpose Processor, a Digital Signal Processor (DSP), an Application-Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA), or other Programmable logic device, a transistor logic device, a hardware component, or any combination thereof. Which may implement or perform the various illustrative logical blocks, modules, and circuits described in connection with the disclosure. The processor may also be a combination of computing functions, e.g., comprising one or more microprocessors, DSPs, and microprocessors, among others. The receiving unit 803 may be a receiver and the transmitting unit 804 may be a transmitter, or the receiving unit 803 and the transmitting unit 804 may be integrated into a transceiver. The storage unit 801 may be a memory.

When the processing unit 802 is a processor, the receiving unit 803 and the transmitting unit 804 are integrated into a transceiver, and the storage unit 801 is a memory, the communication device according to the embodiment of the present invention may be the communication device shown in fig. 9.

Referring to fig. 9, the terminal device may include: a processor 902, a transceiver 903, a memory 901, and a bus 904. Wherein, the transceiver 903, the processor 902 and the memory 901 are connected to each other by a bus 904; the bus 904 may be a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in FIG. 9, but this does not indicate only one bus or one type of bus.

Referring to fig. 10, a schematic diagram of a possible structure of a network device according to an embodiment of the present invention is shown, and referring to fig. 10, the network device may include: a transmitting unit 1001 and a receiving unit 1002. Wherein these units may perform the respective functions of the network device in the above method examples, e.g. a sending unit 1001 for sending a measurement request to the communication device; a receiving unit 1002, configured to receive a measurement result of timing offset information from the communication device, where the timing offset information is timing offset information between a first system and a second system; wherein the communication device accesses the first system through the first network device and accesses the second system through the second network device, respectively, and the timing offset information includes: an SFN offset and a boundary offset, the boundary offset comprising an offset of a subframe boundary or an offset of a slot boundary, and an offset of a frame boundary, wherein the offset of the subframe boundary comprises a real number of slots, the offset of the slot boundary comprises a real number of minislots or an integer number of minimum time units, or the offset of the slot boundary comprises a real number of minislots and an integer number of minimum time units, and the timing offset information is determined according to subcarrier spacing configuration information of each of the first system and the second system.

Optionally, the receiving unit 1002 is further configured to receive first indication information from the communication device, where the first indication information is used to indicate that lengths of time units corresponding to the respective offsets included in the timing offset information are the same as lengths of time units of the first system or time units of the second system, where the time units include frames, subframes, slots, minislots, or minimum time units.

Optionally, the timing deviation information further includes timing deviation information between the first system and a third system, and/or timing deviation information between the third system and the second system, where the third system is a system in which a third network device is located, and the communication device is further connected to the third network device.

Optionally, the measurement result further includes first difference information and/or second difference information, where the first difference information is obtained by comparing, by the communication device, timing offset information between a third system and the first system with timing offset information between the first system and the second system, and the second difference information is obtained by comparing, by the communication device, timing offset information between the third system and the second system with timing offset information between the first system and the second system.

In the case of an integrated unit, fig. 11 shows another possible structural diagram of the network device involved in the foregoing embodiments, and as shown in fig. 11, the network device may include: a processing unit 1102, a receiving unit 1103 and a sending unit 1104. Processing unit 1102 may be used to control management of actions of network devices, and/or other processes for the techniques described herein. The receiving unit 1103, the sending unit 1104 may be used to support communication between the network device and other network entities, for example, communication between the functional units (or modules) or network entities shown in fig. 2 to 10. The communication device may further comprise a storage unit 1101 for storing program codes and data of the network device.

The processing unit 1102 may be a processor or a controller, such as a CPU, general purpose processor, DSP, ASIC, FPGA or other programmable logic device, transistor logic device, hardware component, or any combination thereof. Which may implement or perform the various illustrative logical blocks, modules, and circuits described in connection with the disclosure. The processor may also be a combination of computing functions, e.g., comprising one or more microprocessors, DSPs, and microprocessors, among others. The receiving unit 1103 may be a receiver and the sending unit 1104 may be a transmitter, or the receiving unit 1103 and the sending unit 1104 may be integrated as a transceiver. The storage unit 1101 may be a memory.

When the processing unit 1102 is a processor, the receiving unit 1103 and the sending unit 1104 are integrated into a transceiver, and the storage unit 1101 is a memory, the network device according to the embodiment of the present invention may be the network device shown in fig. 12.

Referring to fig. 12, the network device may include: a processor 1202, a transceiver 1203, a memory 1201 and a bus 1204. Wherein, the transceiver 1203, the processor 1202 and the memory 1201 are connected to each other by a bus 1204; the bus 1204 may be a PCI bus or an EISA bus, etc. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in FIG. 12, but this is not intended to represent only one bus or type of bus.

The steps of a method or algorithm described in connection with the disclosure herein may be embodied in hardware or in software instructions executed by a processor. The software instructions may be comprised of corresponding software modules that may be stored in Random Access Memory (RAM), flash Memory, Read Only Memory (ROM), Erasable Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), registers, a hard disk, a removable hard disk, a compact disc Read Only Memory (CD-ROM), or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. Of course, the storage medium may also be integral to the processor. The processor and the storage medium may reside in an ASIC. Additionally, the ASIC may reside in an associated device. Of course, the processor and the storage medium may reside as discrete components in an associated apparatus.

In implementation, the steps of the above method may be performed by integrated logic circuits of hardware in a processor or instructions in the form of software. The steps of a method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in a 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 a memory, and a processor reads information in the memory and completes the steps of the method in combination with hardware of the processor. To avoid repetition, it is not described in detail here.

It should also be understood that reference herein to first, second, third, fourth, and various numerical designations is made only for ease of description and should not be used to limit the scope of the present application.

It should be understood that the term "and/or" herein is merely one type of association relationship that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

It should be understood that, in the various embodiments of the present application, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of the processes should be determined by the functions and the inherent logic, and should not constitute any limitation to the implementation process of the present application.

Those of ordinary skill in the art will appreciate that the various illustrative logical blocks and steps (step) 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 above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the procedures or functions described in accordance with the present application are generated, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website site, computer, server, or data center to another website site, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.

Claims

1. A method for obtaining timing deviation is applied to a communication device, wherein the communication device accesses a first system through a first network device and accesses a second system through a second network device, and the communication device receives a first reference signal from the first network device and a second reference signal from the second network device;

the method comprises the following steps:

the communication device receiving a measurement request from the first network device;

the communication device measuring timing offset information between the first system and the second system in response to the measurement request and based on the first reference signal and the second reference signal,

the timing offset information is determined according to subcarrier spacing configuration information of each of the first system and the second system, and includes: when the subframe lengths of the first system and the second system are equal to a slot length, the timing offset information includes a System Frame Number (SFN) offset and a boundary offset, the boundary offset includes an offset of a subframe boundary or an offset of a slot boundary, and an offset of a frame boundary;

when the subframe lengths of the first system and the second system are unequal to the time slot length, the timing deviation information comprises a System Frame Number (SFN) deviation and a boundary deviation, and the boundary deviation comprises a deviation of a subframe boundary, a deviation of a time slot boundary and a deviation of a frame boundary;

wherein the deviation of the subframe boundary comprises a real number of slots, the deviation of the slot boundary comprises a real number of minislots or an integer number of minimum time units, or the deviation of the slot boundary comprises a real number of minislots and an integer number of minimum time units;

2. The method of claim 1, wherein the measuring timing offset information between the first system and the second system based on the first reference signal and the second reference signal comprises:

the communication device timing the first system through the first reference signal to obtain a frame boundary and at least one of a subframe boundary or a slot boundary of the first system;

the communication equipment timing the second system through the second reference signal to obtain at least one of a subframe boundary or a slot boundary of the second system and a frame boundary;

the communication equipment respectively calculates the difference value between the timing information of each boundary of the first system and the timing information of each boundary of the second system, wherein the distance between each boundary of the second system and each boundary of the first system is shortest;

and the communication equipment processes each difference value to obtain the boundary deviation.

3. The method of claim 1, further comprising:

the communication device takes the frame boundary, the subframe boundary or the slot boundary of the first system as a first boundary and takes the frame boundary, the subframe boundary or the slot boundary of the second system as a second boundary;

the communication equipment determines a measurement boundary for acquiring the timing deviation information according to the subcarrier spacing configuration information of the first system and the second system;

4. The method of claim 3, wherein the subcarrier spacing configuration information of each of the first system and the second system is different, wherein the measurement boundary is a frame boundary, a subframe boundary or a slot boundary of the first system, wherein the subcarrier spacing of the first system is smaller than the subcarrier spacing of the second system, and wherein each boundary of the first system is time-aligned with a corresponding boundary of the second system.

5. The method of claim 1, wherein the measuring timing offset information between the first system and the second system based on the first reference signal and the second reference signal comprises:

the communication device determining a measurement boundary, the measurement boundary being the first boundary or the second boundary;

the communication equipment records first timing information of a system where the measurement boundary is located, and records second timing information of the measurement boundary corresponding to another system;

the communication device calculating a difference between the first timing information and the second timing information;

and the communication equipment processes the difference value to obtain the boundary deviation.

6. The method of claim 1, wherein the measuring timing offset information between the first system and the second system based on the first reference signal and the second reference signal comprises:

the communication equipment records absolute time through a clock;

the communication equipment determines a first time of a measurement boundary of the first system relative to the absolute time and determines a second time of a measurement boundary of the second system relative to the absolute time, wherein the measurement boundary of the first system is a frame boundary, a subframe boundary or a slot boundary of the first system, and the measurement boundary of the second system is a frame boundary, a subframe boundary or a slot boundary of the second system;

the communication device calculating a difference between the first time and the second time;

7. The method of claim 1, further comprising:

the communication device sends first indication information to the first network device, where the first indication information is used to indicate that the length of a time unit corresponding to each offset included in the timing offset information is the same as the length of a time unit of the first system or the length of a time unit of the second system, and the time unit includes a frame, a subframe, a slot, a minislot, or a minimum time unit.

8. The method of claim 1, wherein the timing offset information comprises a length of a time unit corresponding to each offset that is the same as a length of a time unit of the designated subcarrier spacing configuration information.

9. The method of claim 1, wherein the timing offset information further comprises a deviation of a minislot boundary, the deviation of the minislot boundary comprising an integer number of minimum time units.

10. The method according to any one of claims 1-9, further comprising:

the communication equipment measures timing deviation information between the first system and a third system, and/or timing deviation information between the third system and the second system, wherein the third system is a system where third network equipment is located, and the communication equipment is further connected with the third network equipment.

11. The method according to any one of claims 1-9, further comprising:

the communication equipment compares timing deviation information between a third system and the first system with timing deviation information between the first system and the second system to obtain first difference value information; and/or comparing the timing deviation information between the third system and the second system with the timing deviation information between the first system and the second system to obtain second difference information;

and the communication equipment sends the measurement result of the first difference information and/or the second difference information to the first network equipment.

12. A method of acquiring a timing offset, the method comprising:

the first network equipment sends a measurement request to the communication equipment;

the first network equipment receives a measurement result of timing deviation information from the communication equipment, wherein the timing deviation information is the timing deviation information between a first system and a second system;

the communication equipment is respectively accessed to the first system through the first network equipment and the second system through the second network equipment;

when the subframe lengths of the first system and the second system are unequal to the time slot length, the timing deviation information comprises a System Frame Number (SFN) deviation and a boundary deviation, and the boundary deviation comprises a deviation of a subframe boundary, a deviation of a time slot boundary and a deviation of a frame boundary; wherein the deviation of the subframe boundary comprises a real number of slots, the deviation of the slot boundary comprises a real number of minislots or an integer number of minimum time units, or the deviation of the slot boundary comprises a real number of minislots and an integer number of minimum time units.

13. A communication device that accesses a first system through a first network device and a second system through a second network device, respectively, the communication device receiving a first reference signal from the first network device and a second reference signal from the second network device, the communication device comprising: a receiver, a processor and a transmitter,

the receiver is configured to receive a measurement request from the first network device;

the processor is used for responding to the measurement request and measuring timing deviation information between the first system and the second system according to the first reference signal and the second reference signal;

the transmitter is configured to send the measurement result of the timing offset information to the first network device.

14. The communications device of claim 13, wherein the processor is specifically configured to:

and processing each difference value to obtain the boundary deviation.

15. The communication device of claim 13,

the processor is further configured to use a frame boundary, a subframe boundary, or a slot boundary of the first system as a first boundary, and use a frame boundary, a subframe boundary, or a slot boundary of the second system as a second boundary;

the processor is further configured to determine a measurement boundary for acquiring the timing offset information according to subcarrier spacing configuration information of each of the first system and the second system;

16. The communications device of claim 15, wherein the subcarrier spacing configuration information of each of the first system and the second system is different, wherein the measurement boundary is a frame boundary, a subframe boundary or a slot boundary of the first system, wherein the subcarrier spacing of the first system is smaller than the subcarrier spacing of the second system, and wherein each boundary of the first system is time-aligned with a corresponding boundary of the second system.

17. The communications device of claim 13, wherein the processor is specifically configured to:

and processing the difference to obtain the boundary deviation.

18. The communications device of claim 13, wherein the processor is specifically configured to:

recording absolute time through a clock;

calculating a difference between the first time and the second time;

and processing the difference to obtain the boundary deviation.

19. The communication device of claim 13,

the transmitter is further configured to send first indication information to the first network device, where the first indication information is used to indicate that a length of a time unit corresponding to each offset included in the timing offset information is the same as a length of a time unit of the first system or a length of a time unit of the second system, and the time unit includes a frame, a subframe, a timeslot, a minislot, or a minimum time unit.

20. The communications device of claim 13, wherein the timing offset information includes a length of a time unit corresponding to each offset that is the same as a length of a time unit of the designated subcarrier spacing configuration information.

21. The communications device of claim 13, wherein the timing offset information further includes an offset of a minislot boundary, the offset of a minislot boundary including an integer number of minimum time units.

22. The communication device according to any of claims 13-21,

the processor is further configured to measure timing deviation information between the first system and a third system, and/or timing deviation information between the third system and the second system, where the third system is a system in which a third network device is located, and the communication device is further connected to the third network device.

23. The communication device according to any of claims 13-21,

the processor is further configured to compare timing offset information between a third system and the first system with timing offset information between the first system and the second system to obtain first difference information; and/or comparing the timing deviation information between the third system and the second system with the timing deviation information between the first system and the second system to obtain second difference information;

the transmitter is further configured to send the measurement result of the first difference information and/or the second difference information to the first network device.

24. A network device, characterized in that the network device comprises: a transmitter and a receiver, wherein the transmitter and the receiver,

the transmitter is used for sending a measurement request to the communication equipment;

the receiver is used for receiving a measurement result of timing deviation information from the communication equipment, wherein the timing deviation information is the timing deviation information between a first system and a second system;

wherein the communication device accesses the first system through a first network device and accesses the second system through a second network device, respectively,

wherein the deviation of the subframe boundary comprises a real number of slots, the deviation of the slot boundary comprises a real number of minislots or an integer number of minimum time units, or the deviation of the slot boundary comprises a real number of minislots and an integer number of minimum time units.

25. A chip system, comprising a processor for implementing the method of acquiring timing offset according to any one of claims 1 to 11.

26. A chip system, comprising a processor for implementing the method of obtaining timing offset of claim 12.

27. A system for acquiring a timing offset, comprising a communication device, a first network device and a second network device, wherein the communication device accesses a first system through the first network device and accesses a second system through the second network device, respectively, and the communication device receives a first reference signal from the first network device and a second reference signal from the second network device, wherein:

the communication equipment responds to the measurement request and measures timing deviation information between the first system and the second system according to the first reference signal and the second reference signal;