WO2013104334A1

WO2013104334A1 - Data transmission method and device

Info

Publication number: WO2013104334A1
Application number: PCT/CN2013/070378
Authority: WO
Inventors: 徐伟杰; 邢艳萍; 贾民丽
Original assignee: 电信科学技术研究院
Priority date: 2012-01-12
Filing date: 2013-01-11
Publication date: 2013-07-18
Also published as: CN103209441A; CN103209441B

Abstract

Disclosed are a data transmission method and device, the method comprising: a network side device allocates a plurality of frequency points in the uplink system bandwidth or the data area of the downlink system bandwidth of a long term evolution (LTE) system; the network side device indicates via a signaling the frequency point for a terminal device to initiate data transmission. The present invention solves the problem of insufficient frequency point capacity with a single small bandwidth.

Description

The present invention claims the priority of the Chinese Patent Application entitled "A Data Transmission Method and Apparatus", which is filed on January 12, 2012, the Chinese Patent Office, Application No. 201210008803.2, the entire contents of which is incorporated herein by reference. This is incorporated herein by reference. Technical field

The present invention relates to the field of wireless communications, and in particular, to a data transmission method and device. Background technique

M2M (Machine-to-machine) communication is a new communication concept. Its purpose is to combine many different types of communication technologies, such as: machine-to-machine communication, machine control communication, human-computer interaction communication, Mobile internet communication to promote social production and lifestyle development.

Current mobile communication networks are designed for communication between people, such as the determination of network capacity. If you want to use mobile communication networks to support small-bandwidth system communication, you need to optimize the mechanism of the mobile communication system according to the characteristics of small-bandwidth system communication, so that when traditional human-to-human communication is not affected or less affected. To better achieve small bandwidth system communication.

Some of the features that are currently recognized for MTC (Machine Type Communications) communications are:

MTC terminals have low mobility;

The time for data transmission between the MTC terminal and the network side is controllable; that is, the MTC terminal can only access during the time period specified by the network.

When data is transmitted between the MTC network and the network side, the real-time performance of data transmission is not high, that is: time-tolerant; MTC terminals are energy limited and require very low power consumption;

Only small amount of information is transmitted between the MTC terminal and the network side;

MTC terminals can be managed in groups.

An actual MTC terminal can have one or more of the above characteristics.

In order to support the operation of a small-bandwidth terminal device in an LTE (Long Term Evolution) system, the existing solution considers separately opening an area for data area outside the control area of the existing LTE system within the bandwidth of the small bandwidth system. A downlink control channel dedicated to small bandwidth terminal equipment. According to the mapping between the control area and the data area of the small bandwidth system, there are two options:

Option 1: TDM solution

The TDM (Time Division Multiplex) scheme refers to the control area and data area used for small-bandwidth transmission occupying the traditional LTE system control area (including PBCH (Physical) in the working bandwidth of the small-bandwidth system. Broadcast channel, broadcast channel), other resources other than the channel, PSS (Primary Synchronizing Signal), SSS channel (Secondary synchronization signal). Considering that the control channel of the LTE system can occupy the first M (M=2 or 3 or 4) time domain symbols of the first time slot in one subframe, the small bandwidth system can only be from the Mth in its bandwidth. +1 (M=2 or 3 or 4) symbols start to occupy N consecutive time-domain symbols (N is controlled by the PCFICH (Physical Control Format Indicator Channel) channel of the small bandwidth system, PCFICH is The resource mapping location in the small bandwidth system control area has been fixed and the network and terminal devices have agreed, see description below) as its control region. The control area of the small-bandwidth terminal device carries its downlink control channel, such as PCFICH, PHICH (Physical hybrid-ARQ indicator channel), and Physical downlink control channel (PDCCH). These control channels are small. Bandwidth system The distribution within the bandwidth supported by the system (for example, 5MHz), the resource distribution is shown in Figure 1.

Option 2: FDM solution

The FDM (Frequency Division Multiplex) scheme refers to a control area and a data area for small-bandwidth transmission occupying a traditional system control area (including a PBCH channel, in a frequency division multiplexing manner) within a small bandwidth system bandwidth. Other resources outside the PSS, SSS channel). As with the TDM scheme, the control region of the small bandwidth system begins with the M+1th (M=2 or 3 or 4) time domain symbol of the first time slot of each service subframe. Different from the TDM mode, in the FDM mode, the control region is distributed in a continuous frequency band, and in the time domain, the small bandwidth control region occupies from the M+1 in one subframe (M=2 or 3 or 4) All subsequent symbols from the symbol. The downlink control channel is carried in the control area of the small-bandwidth terminal device, including PCFICH, PHICH, and PDCCH. The resource distribution is as shown in Figure 2 below.

In the above two schemes, the number of control channels that can be supported in a limited bandwidth, such as a PHICH channel, a PDCCH channel, and a PUCCH (Physical uplink shared channel) channel, is relatively limited; Resources for transmitting business data will also be limited. If only a small bandwidth area is configured for the MTC terminal in the broadband LTE system, the demand for the mass MTC terminal to use the network at the same time may not be met; therefore, it is necessary to consider how to simultaneously support more MTC terminals to work simultaneously in the LTE system. Summary of the invention

The embodiment of the invention provides a data transmission method and device to solve the problem of insufficient capacity of a single small band wide frequency point. To this end, the present invention adopts the following technical solutions:

A data transmission method includes:

The network side device configures multiple frequency points in the data area or the uplink system bandwidth of the downlink system bandwidth of the Long Term Evolution (LTE) system; The network side device indicates, by signaling, a frequency point at which the terminal device performs data transmission. A data transmission method includes:

The terminal device acquires frequency point information of multiple frequency points configured by the network side device in the data area of the downlink bandwidth of the LTE system or the uplink system bandwidth;

The terminal device determines a frequency point for performing data transmission according to the indication signaling sent by the network side device. A network side device, including:

a configuration module, configured to configure multiple frequency points in a data area of the downlink system bandwidth of the Long Term Evolution (LTE) system or an uplink system bandwidth;

The indication module is configured to indicate, by signaling, a frequency point at which the terminal device performs data transmission. A terminal device, comprising:

Obtaining the frequency information of the multiple frequency points configured by the network side device in the data area of the downlink bandwidth of the LTE system or the uplink system bandwidth;

a receiving module, configured to receive indication signaling sent by the network side device;

And a processing module, configured to determine, according to the indication signaling sent by the network side device, a frequency point for performing data transmission.

In the foregoing embodiment of the present invention, the network side device configures multiple frequency points in the data area of the downlink system bandwidth of the LTE system or the uplink system bandwidth, and indicates the frequency point of the data transmission by the terminal device by using the indication signaling, so that the terminal device The frequency of data transmission is determined according to the received indication signaling, and the problem of insufficient capacity of a single small bandwidth frequency point is solved. DRAWINGS

1 is a schematic diagram of resource distribution in the prior art; 2 is a schematic diagram of resource distribution in the prior art;

3 is a schematic flowchart of a data transmission method according to an embodiment of the present invention;

4 is a schematic diagram of a sequential multi-frequency point configuration manner according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of a multi-frequency point arrangement manner of back-to-back arrangement according to an embodiment of the present invention; FIG.

6 is a schematic diagram of a multi-frequency point configuration manner of a composite arrangement according to an embodiment of the present invention;

7 is a schematic diagram of a multi-frequency point configuration manner in which an odd number of frequency points are mixed and arranged according to an embodiment of the present invention;

FIG. 8 is a schematic diagram of an uplink multi-frequency point configuration manner according to an embodiment of the present invention; FIG. 9 is a schematic structural diagram of a network side device according to an embodiment of the present invention; FIG. Schematic diagram of the device. detailed description

For the above problems existing in the prior art, the embodiments of the present invention provide a technical solution for data transmission, by configuring multiple frequency points for transmitting control signaling in the bandwidth of the LTE system, and using control signals for each frequency point. The data transmission resource at the frequency or other frequency points is scheduled to solve the problem of insufficient capacity of a single small bandwidth frequency point in the prior art, and the utilization rate of the internal frequency point resource is improved.

For the downlink multi-frequency point data transmission scheme, multiple frequency points for control signaling transmission may be configured in the data domain of the existing LTE system; for the uplink multi-frequency point data transmission scheme, the existing LTE system may be used. A plurality of frequency points for transmitting control signaling are configured in the entire bandwidth. The data field of the LTE system is a physical downlink shared channel (PDSCH) resource area of the LTE system.

The embodiments of the present invention are described in detail below with reference to the accompanying drawings. As shown in FIG. 3, it is a schematic flowchart of a data transmission method according to an embodiment of the present invention, where the process may include:

Step 301: The network side device configures multiple frequency points in the data area of the downlink system bandwidth of the LTE system or the uplink system bandwidth.

Specifically, the terminal device is an MTC terminal as an example for description. In the embodiment of the present invention, a plurality of frequency points for transmitting control signaling are configured in a data area or an uplink system bandwidth of a downlink system bandwidth of the LTE system, and control signaling of each frequency point is used to schedule the frequency point or other frequency. The data resource on the point. The frequency point information of each frequency point may be notified by the network side device through the high layer signaling to the MTC terminal or pre-agreed by the network side device and the MTC terminal. The frequency point information may include, but is not limited to, a frequency point number, a frequency band size, a frequency point position, and a number of the initial access frequency point. The MTC terminal initiates a random access request to the network side device at the initial access frequency according to the received or pre-agreed frequency point information.

Step 302: The network side device indicates, by signaling, a frequency at which the terminal device performs data transmission.

Specifically, the network side device may indicate, by signaling, the initial access of the terminal device and the frequency of the initial data transmission, and may also indicate the target frequency of the frequency point migration by the terminal device by using signaling.

The network side instructs the terminal device to perform frequency point migration. On the one hand, in consideration of the user who may have initial access at any time, in order to ensure that the initial access frequency of the network configuration has sufficient resources to supply initial signaling or data to the user. The transmission uses, when the remaining resources on the frequency point are lower than the threshold, the network side device needs to migrate some users of the frequency point to other frequency points.

When the network side device determines that the remaining resources of the initial access frequency of the terminal device to initiate the random access request are lower than the threshold, the network side device sends an indication message to the terminal device to indicate that the terminal device migrates to the remaining resources. Frequency point. On the other hand, in order to save system resources and improve the intra-frequency utilization of the system, when the network-side device discovers that the number of users in the system is small, the network-side device can concentrate the users in the system to work at one or several frequency points.

Correspondingly, in the embodiment of the present invention, the network side device detecting that the network requirement changes may include, but is not limited to, one or more of the following situations:

Case 1: When the network side device receives the random access request initiated by the terminal device at the preset initial access frequency, and determines that the remaining resources on the initial access frequency point are lower than the first threshold, the network side device sends the The terminal device sends a first indication message, indicating that the terminal device migrates to a specified frequency point;

Case 2: When the network side device determines that the number of terminal devices of a certain frequency point (such as frequency point A) in the system is lower than the second threshold, and the remaining resources of another frequency point (such as frequency point B) exceed the third threshold The network side device sends a second indication message to the terminal device of the frequency point A, indicating that the terminal device at the frequency point migrates to the frequency point B.

Step 303: The terminal device determines, according to the indication signaling sent by the network side, a frequency point for performing data transmission.

Specifically, the terminal device performs initial access and initial data transmission at the initial access frequency according to the indication signaling sent by the network side device. When the terminal device receives the indication signaling sent by the network device to indicate that the terminal device performs frequency point migration, the terminal device migrates to the designated frequency point according to the received indication signaling, and performs data transmission at the designated frequency point.

In the embodiment of the present invention, the configuration of the downlink multi-frequency point may include, but is not limited to, the following manners (where the MTC terminal is taken as an example):

Method 1, multi-frequency point ordering

Referring to FIG. 4, it is a schematic diagram of a sequential multi-frequency point configuration manner adopted by an embodiment of the present invention. In the figure, the frequency configuration of two TDM schemes is taken as an example (the actual number of frequency points can be set as needed, and is also applicable to the FDM scheme). At each small bandwidth At the point, the control area of the small bandwidth system is mapped to the data area in the existing LTE system; each frequency point is sequentially arranged. In order to reduce resource fragmentation, each frequency point may be arranged in a sequential order, and the number of frequency points appearing in sequence may be sequentially recorded as 0, 1, 2, 3..·, information of each frequency point (including frequency point number, frequency band) The size and frequency point location are notified by the network side device through the high layer signaling that the MTC terminal or the network side device and the MTC terminal are pre-agreed. The high layer signaling may include, but is not limited to, system broadcast messages or RRC signaling.

Mode 2, multi-frequency point back to back arrangement

FIG. 5 is a schematic diagram of a multi-frequency point configuration manner of back-to-back arrangement according to an embodiment of the present invention. At each small bandwidth frequency point, the control region of the small bandwidth system maps to all time domain symbols on a portion of the frequency band of the data region in the existing LTE system. The number of frequency points in the back-to-back mode may be 0, 1, 2, 3..·, and the frequency information of the adjacent frequency points is notified by the network side device through the high layer signaling to the MTC terminal or the network side device and the MTC terminal. Among them, the control area of the small bandwidth system and the size of the data area can be extended unidirectionally with the increase of system users (the extended range is limited to the bandwidth of the MTC system). In order to reduce resource fragmentation, in the multi-frequency point configuration mode, two adjacent frequency points are arranged in a back-to-back manner: that is, control areas of two frequency points are adjacently placed, and the size of the control area increases with the increase of users. The frequency domain is extended in two directions; the data regions of the two frequency points are respectively extended to the two sides of the frequency domain outside the respective control regions.

Mode 3, multi-frequency point composite arrangement

FIG. 6 is a schematic diagram of a multi-frequency point configuration manner of a composite arrangement according to an embodiment of the present invention. In the figure, two frequency points are configured as an example. At each small bandwidth frequency point, the control region of the small bandwidth system maps to all time domain symbols on a portion of the frequency band of the data region in the existing LTE system. The adjacent pair of frequency points are also arranged in a "back-to-back" manner, but the control regions of the adjacent pair of frequency points are combined to perform resource mapping to increase the control signal. The interleaving range of the channel (such as PDCCH) improves the interleaving gain. At the same time, the PRB (Physical Resource Block) resource of the public information such as the PCH (Paging Channel) and the SIB (System Information Block) of the user of the adjacent pair of frequency points can be Share.

Wherein, assuming that the maximum value of the control region of the adjacent pair of frequency points is limited to PRB_Public_Max (determined according to the simulation, the performance of the most edge user is satisfied), then the frequency domain coincidence region of the adjacent frequency points is PRB_Control_Max+PRB_Public_Max; The frequency number of adjacent frequency points in the mode is 0, 1, 2, 3...; the starting position of the control area of the adjacent frequency point pair, the size of the frequency band occupied by the control area, and/or the public information transmission area The size of the frequency band is notified by the network side device through the high layer signaling to the MTC terminal or the network side device and the MTC terminal.

Mode 4, an odd number of frequency points mixed arrangement

Based on modes 2 and 3 in the multi-frequency point configuration mode, when the number of frequency points configured on the network side is an odd number greater than 1, one frequency point cannot be paired with other frequency points, and the frequency point can be separately configured. The control area can be on the high frequency side or on the low frequency side. FIG. 7 is a schematic diagram of a multi-frequency point arrangement manner of an odd number of frequency points mixed arrangement according to an embodiment of the present invention; wherein, in a configuration of three frequency points, two frequency points are “back to back”, and the remaining one The single frequency point control area is exemplified on the high frequency point side.

Corresponding to the above-mentioned downlink multi-frequency point arrangement, in the embodiment of the present invention, the configuration manner of the uplink multi-frequency point may also include a sequential arrangement manner, a multi-frequency point "back-to-back" arrangement manner, a adjacent frequency point composite arrangement manner, and The odd-numbered frequency points are mixed and arranged, and the specific implementation is similar to the downlink multi-frequency point configuration, and is not described here--detailed. The difference from the downlink multi-frequency point configuration mode is that, in the uplink multi-frequency point configuration mode, the control area of the small bandwidth system can be mapped to the entire bandwidth of the existing LTE system at each small bandwidth frequency point; For a small bandwidth frequency, the control area of the small bandwidth system can On either side of the data area, it can also be on one side of the data area. The multi-frequency point arrangement mode and the control area are on both sides of the data area. The schematic diagram of the multi-frequency point configuration mode can be as shown in FIG. 8.

In the embodiment of the present invention, the manner in which the network side device notifies the frequency point to which the MTC needs to be migrated may include, but is not limited to, the following manners:

Mode 1, high-level signaling notification method

In the RRC (Radio Resource Control) connection establishment process, if the network side device determines that the remaining resources on the initial access frequency of the MTC terminal initiated the random access request are lower than the threshold, the network side device may pass the RRC. The SETUP message informs the specified frequency point (target frequency point) to which the MTC terminal needs to migrate.

When the network side device determines that there are few MTC terminals in the system, the MTC terminal working at other frequency points can be moved back to a certain frequency point or some frequency points by using the RRC connection reconfiguration command to save system resources. Reduce the impact on LTE system transmission.

Mode 2: Physical layer signaling notification method

In this mode, the MTC terminal may initiate a random access procedure at the initial access frequency point (such as the frequency point 0), and the network side device performs scheduling on the QoS channel at the frequency point 0, indicating the location of the data service resource of the MTC terminal. . At the same time, the PDCCH can pass N (N is determined by the number of small bandwidth frequency requirements, N bits can indicate 2 N-th power frequency points, taking two bits as an example, 00 means frequency 0, 01 means frequency 1 Point) bits indicate the target frequency to be migrated to. Similar to the high-level signaling notification mode, when the network-side device determines that there are fewer MTC terminals in the system, the total number of required frequency points can be reduced, and the network-side device can cancel data transmission on some small-bandwidth frequency points. If the MTC terminal is performing service transmission on the frequency, the network side device may notify the MTC terminal to move back to the 0th frequency point or concentrate to some frequency points through the PDCCH signaling.

Mode 3, PDCCH order (command) mode When the network side device determines that the MTC terminal needs to perform the frequency shift, the MTC terminal may send a PDCCH order carrying the handover frequency information, and instruct the MTC terminal to initiate a non-contention random access procedure at the target frequency, where the random The accessed PRACH (Physical Random Access Channel) resource and the Preamble (preamble) information may be carried in the PDCCH order. After receiving the PDCCH order, the MTC terminal switches to the working frequency point specified by the network side device according to the indication of the PDCCH order, and initiates the non-contention random access process by using the specified Preamble on the designated PRACH resource according to the requirements of the network side device. . If the network side device correctly receives the Preamble information sent by the MTC terminal at the target frequency, the MTC terminal has successfully completed the frequency point transfer, and the network side device sends the downlink acknowledgement information to the MTC terminal; if the network side device does not correctly receive the Preamble information The network side device needs to receive the Preamble information on the next PRACH resource, and simultaneously sends the PDCCH order to the MTC terminal at the initial access frequency (source frequency point) until the random access procedure succeeds.

It should be understood that the foregoing multi-frequency point configuration mode and the manner in which the network side device notifies the MTC terminal that the frequency of the MTC terminal needs to be migrated are only a few specific implementation manners of the technical solutions provided by the embodiments of the present invention, and are not intended to protect the scope of the present invention. On the basis of the technical solutions provided by the embodiments of the present invention, all other multi-frequency point configuration methods obtained by those skilled in the art without creative labor and the network side devices notify the MTC terminal that the MTC terminal needs to be migrated. The manner of frequency points is within the scope of protection of the present invention. At the same time, the technical solutions provided by the embodiments of the present invention are not only applicable to the FDM and TDM solutions, but also can be applied to other solutions.

The foregoing description may be made that, in the technical solution provided by the embodiment of the present invention, by using the data range of the LTE system (for downlink multi-frequency point data transmission) or the entire system bandwidth of the LTE system (for uplink multi-frequency point data transmission), Configure multiple frequency points for control letters For the transmission of the command, the control information of each frequency point respectively schedules the data transmission resources at the frequency point or other frequency points, and the network side device indicates the frequency of the data transmission by the terminal device by signaling, thereby solving the single point in the prior art. The problem of insufficient capacity of the small bandwidth frequency point and the utilization of the internal frequency point resource of the system.

Based on the same inventive concept as the foregoing method, the network side device is further provided in the embodiment of the present invention. As shown in FIG. 9, the network side device includes:

The configuration module 901 is configured to configure multiple frequency points in a data area or an uplink system bandwidth of a downlink system bandwidth of the Long Term Evolution (LTE) system;

The indication module 902 is configured to indicate, by signaling, a frequency point at which the terminal device performs data transmission. Each of the plurality of frequency points is configured with control signaling for scheduling data resources at the frequency point or data resources at other frequency points.

The indication module 902 is specifically configured to: indicate, by signaling, a frequency point at which the terminal device performs initial access and initial data transmission; or/and, indicates, by signaling, a target frequency point of the terminal device to perform frequency point migration.

The indication module 902 is specifically configured to: when the network side device receives a random access request initiated by the terminal device at a preset initial access frequency point, and determines remaining resources on the initial access frequency point. When the threshold is lower than the first threshold, the first indication signaling is sent to the terminal device, indicating that the terminal device migrates to a specified frequency point; or/and,

When the network side device determines that there is a frequency point in the system where the number of terminal devices is lower than the second threshold, and there are other frequency points where the remaining resources are greater than the third threshold, sending the second indication signaling to the terminal device of the frequency point. Instructing the terminal device to migrate to the other frequency points.

The configuration manner of the multiple frequency points includes:

The sequential arrangement mode, the back-to-back arrangement of adjacent frequency points, the composite transmission mode of adjacent frequency points, and the mixed arrangement of odd frequency points.

The configuration manner of the multiple frequency points includes: The sequential arrangement mode, the back-to-back arrangement of adjacent frequency points, the composite transmission mode of adjacent frequency points, and the mixed arrangement of odd frequency points.

The method for back-to-back arrangement of the adjacent frequency points includes:

a frequency band occupied by a control region of each of the plurality of frequency points extends from a boundary of the two frequency points to both sides of the frequency band, and the data area extends from outside the control region to the outer side of the frequency band; The data area occupied by the frequency point and the bandwidth occupied by the control area do not exceed the bandwidth supported by the frequency point.

The method for the composite transmission of the adjacent frequency points specifically includes:

The control regions of each of the two adjacent frequency points are combined in the same segment of the common control region, and the data regions of the two frequency points are respectively extended to the outside of the common control region band; wherein, the frequency The data area occupied by the point and the control area occupy no more bandwidth than the bandwidth supported by the frequency point.

The data resource area of one of the adjacent frequency points transmits the common information shared by the two frequency points.

Wherein, when the number of the plurality of frequency points is an odd number, a control region of the frequency points not paired with the other frequency points of the plurality of frequency points is on a high frequency side or a low frequency side of the frequency point.

The frequency point information is notified by the network side device to the terminal device by using high layer signaling;

Or, the network side device and the terminal device pre-arrange.

The high layer signaling includes: a system broadcast message or a radio resource control RRC signaling.

The frequency point information includes: a frequency point number, a frequency band size, a frequency point position, and an initial access frequency point number.

The frequency point information further includes: when the control area of each of the two adjacent frequency points is combined in the same common control area frequency band, the frequency point information further includes: The starting position of the zone, the size of the band occupied by the control zone, and/or the size of the frequency of the common information transmission zone.

The indication module 902 is specifically configured to notify, by using high layer signaling or physical layer control signaling, a specified frequency point to which the terminal device needs to migrate.

The indication module is specifically configured to: add a frequency indication bit in the downlink physical layer control signaling to notify the specified frequency point that the terminal device needs to migrate to.

The indication module 902 is specifically configured to: send, to the terminal device, a physical downlink control channel command PDCCH order that carries a frequency indication bit, to instruct the terminal device to initiate a non-contention random access request to the designated frequency point;

The network side device further includes:

The processing module 903 is configured to receive a non-contention random access request initiated by the terminal device at the specified frequency point, and determine, according to the non-contention random access process of the terminal device, whether the terminal device correctly completes the frequency point. Transfer.

Based on the same inventive concept as the above method, the embodiment of the present invention further provides a terminal device. As shown in FIG. 10, the terminal device includes:

The obtaining block 1001 is configured to obtain frequency point information of a plurality of frequency points configured by the network side device in a data area of a downlink bandwidth of the LTE system or an uplink system bandwidth;

The receiving module 1002 is configured to receive the indication signaling sent by the network side device, and the processing module 1003 is configured to determine, according to the indication signaling sent by the network side device, a frequency point for performing data transmission.

Each of the plurality of frequency points is configured with control signaling for scheduling data resources at the frequency point or data resources at other frequency points.

The processing module 1003 is specifically configured to: determine, according to the indication signaling sent by the network side device, a frequency point for performing initial access and initial service data transmission; or/and, according to the indication sent according to the network side device Signaling determines the target for frequency migration Frequency.

The processing module 1003 is specifically configured to: when the receiving module receives the first indication signaling sent by the network side device, determine, according to the first indication signaling, a target frequency point for performing frequency point migration; When the network side device receives the random access request initiated by the terminal device at the preset initial access frequency, and determines that the remaining resources on the initial access frequency point are lower than the first threshold, the The network side device sends the first indication signaling to the terminal device; or/and,

When the receiving module receives the second indication signaling sent by the network side device, determining, according to the second indication signaling, a target frequency point for performing frequency point migration; wherein, when the network side device determines system memory The network side device sends the second indication signaling to the terminal device of the frequency point when the frequency of the terminal device is lower than the second threshold, and the remaining frequency is greater than the third threshold.

The configuration manner of the multiple frequency points includes:

The sequence arrangement includes:

The plurality of frequency points are arranged in a sequential arrangement according to frequency point numbers; wherein the sequential arrangement is arranged in a sequential order or a non-continuous order.

Control regions of each of the two adjacent frequency points of the plurality of frequency points are combined in the same segment The data areas of the two frequency points are respectively extended to the outside of the common control area band; wherein the data area occupied by the frequency point and the bandwidth occupied by the control area do not exceed the bandwidth supported by the frequency point.

Or, the network side device and the terminal device pre-arrange.

Wherein, when the control regions of each of the two adjacent frequency points are combined in the same common control region frequency band, the frequency point information further includes: starting of the control region of the adjacent frequency point pair The location, the size of the band occupied by the control area, and/or the frequency of the common information transmission area.

The receiving module 1002 is specifically configured to: receive the indication signaling that is sent by the network side device by using the high layer signaling or the physical layer control signaling to indicate that the terminal device needs to migrate to the specified frequency point.

The indication signaling is a downlink physical layer control signal with a frequency indication bit added.

The indication signaling is a physical downlink control channel command PDCCH order carrying a frequency indication bit; The processing module 1003 is further configured to: after the receiving module 1002 receives the indication signaling, initiate non-contention random access according to the PDCCH order at the specified frequency point; wherein, the network side device Determining, according to the non-contention random access procedure of the terminal device, whether the terminal device correctly completes the transfer of frequency points.

Those skilled in the art can understand that the modules in the apparatus in the embodiments may be distributed in the apparatus of the embodiment according to the description of the embodiments, or may be correspondingly changed in one or more apparatuses different from the embodiment. The modules of the above embodiments may be combined into one module, or may be further split into a plurality of sub-modules.

Through the description of the above embodiments, those skilled in the art can clearly understand that the present invention can be implemented by means of software plus a necessary general hardware platform, and of course, can also be through hardware, but in many cases, the former is a better implementation. the way. Based on such understanding, the technical solution of the present invention, which is essential or contributes to the prior art, may be embodied in the form of a software product stored in a storage medium, including a plurality of instructions for causing a The terminal device (which may be a mobile phone, a personal computer, a server, or a network device, etc.) performs the methods described in various embodiments of the present invention.

The above description is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can also make several improvements and retouchings without departing from the principles of the present invention. The scope of protection of the invention should be considered.

Claims

Rights request

A data transmission method, comprising:

The network side device configures multiple frequency points in the data area of the downlink system bandwidth of the LTE system or the uplink system bandwidth;

The network side device indicates, by signaling, a frequency point at which the terminal device performs data transmission.

2. The method according to claim 1, wherein each of the plurality of frequency points is configured with control signaling for scheduling data resources on the frequency point or other frequency points. Data resources.

The method according to claim 1, wherein the network side device indicates, by signaling, a frequency point at which the terminal device performs data transmission, which specifically includes:

The network side device indicates, by signaling, a frequency point at which the terminal device performs initial access and initial data transmission; or / and,

The network side device indicates, by signaling, a target frequency of the frequency point migration of the terminal device.

The method according to claim 3, wherein the network side device instructs the terminal device to perform frequency point transfer by signaling, specifically:

When the network side device receives the random access request initiated by the terminal device at the preset initial access frequency, and determines that the remaining resources on the initial access frequency point are lower than the first threshold, the network side The device sends the first indication signaling to the terminal device, indicating that the terminal device migrates to a specified frequency point; or/and,

When the network side device determines that the number of terminal devices in the system is lower than a second threshold And the network side device sends a second indication signaling to the terminal device of the frequency point, indicating that the terminal device migrates to the other frequency point, when there is another frequency point that the remaining resource is greater than the third threshold. .

5. The method according to claim 1, wherein the configuration of the plurality of frequency points comprises:

The method according to claim 5, wherein the sequential arrangement comprises:

The method according to claim 5, wherein the adjacent frequency points are arranged in a back-to-back manner, and specifically include:

The method according to claim 5, wherein the adjacent frequency point composite transmission manner comprises:

The control regions of each of the two adjacent frequency points are combined in the same segment of the common control region, and the data regions of the two frequency points are respectively extended to the outside of the common control region band; wherein, the frequency The data area occupied by the point and the control area occupy no more bandwidth The bandwidth supported by this frequency.

9. The method according to claim 8, wherein the common information shared by the two frequency points is transmitted in a data resource region of one of the adjacent frequency points.

The method according to any one of claims 7 to 9, wherein when the number of the plurality of frequency points is an odd number, the frequency points of the plurality of frequency points that are not paired with the other frequency points The control area is on the high frequency side or the low frequency side of the frequency point.

The method according to any one of claims 1 to 9, wherein the frequency point information is notified by the network side device to the terminal device through high layer signaling;

Or, the network side device and the terminal device pre-arrange.

The method according to claim 11, wherein the high layer signaling includes: a system broadcast message or a radio resource control RRC signaling.

The method according to claim 11, wherein the frequency point information comprises: a frequency point number, a frequency band size, a frequency point position, and an initial access frequency point number.

The method according to claim 13, wherein when the control regions of each of the plurality of frequency points are combined in the same segment of the common control region, the frequency information is The method further includes: a start position of a control region of the adjacent frequency point pair, a frequency band occupied by the control region, and/or a frequency point occupied by the common information transmission region.

The method according to any one of claims 1 to 9, wherein the network side device notifies the specified frequency point to which the terminal device needs to migrate through high layer signaling or physical layer control signaling.

The method according to claim 15, wherein the network side device notifies the specified frequency point that the terminal device needs to migrate to by using physical layer control signaling, specifically For:

The network side device adds a frequency indication bit to the downlink physical layer control signaling to notify the specified frequency point to which the terminal device needs to migrate.

The method according to claim 15, wherein the network side device notifies the specified frequency point that the terminal device needs to migrate to, by using physical layer signaling, specifically: the network side device to the terminal The device sends a physical downlink control channel command PDCCH order carrying the frequency indication bit to instruct the terminal device to initiate a non-contention random access request to the designated frequency point;

The method also includes:

Receiving, by the network side device, the non-contention random access request initiated by the terminal device at the specified frequency point, and determining, according to the non-contention random access process of the terminal device, whether the terminal device correctly completes the frequency point transfer .

18. A data transmission method, comprising:

The terminal device determines a frequency point for performing data transmission according to the indication signaling sent by the network side device.

The method according to claim 18, wherein each of the plurality of frequency points is configured with control signaling for scheduling data resources on the frequency point or other frequency points. Data resources.

20. The method of claim 18, wherein the terminal device root Determining, according to the indication signaling sent by the network side device, a frequency point for performing data transmission, specifically:

Determining, by the terminal device, a frequency point for performing initial access and initial service data transmission according to the indication signaling sent by the network side device; or / and,

The terminal device determines a target frequency point for performing frequency point migration according to the indication signaling sent by the network side device.

The method according to claim 20, wherein the terminal device determines a target frequency point for performing frequency point migration according to the indication signaling of the network side, specifically: when the terminal device receives the When the first indication signaling is sent by the network side device, the terminal device determines, according to the first indication signaling, a target frequency point for performing frequency point migration; wherein, when the network side device receives the terminal device at a preset The network side device sends the first indication signaling to the terminal device, when the initial access to the random access request initiated by the frequency point is determined, and the remaining resource on the initial access frequency is determined to be lower than the first threshold; And/or, when the terminal device receives the second indication signaling sent by the network side device, the terminal device determines, according to the second indication signaling, a target frequency point for performing frequency point migration; When the network side device determines that there is a frequency point in the system where the number of the terminal devices is lower than the second threshold, and the remaining resources are greater than the third threshold, the network side device sends the frequency to the frequency The terminal device of the point sends the second indication signaling.

The method according to claim 18, wherein the configuring manner of the multiple frequency points comprises:

The method according to claim 22, wherein the sequential arrangement comprises:

The method according to claim 22, wherein the adjacent frequency points are arranged in a back-to-back manner, and specifically include:

The method according to claim 22, wherein the adjacent frequency point composite transmission manner comprises:

The method according to claim 25, wherein the common information shared by the two frequency points is transmitted in a data resource region of one of the adjacent frequency points.

The method according to any one of claims 24 to 26, wherein when the number of the plurality of frequency points is an odd number, the frequency points of the plurality of frequency points that are not paired with the other frequency points The control area is on the high frequency side or the frequency side of the frequency point.

The method according to any one of claims 18 to 26, characterized in that the frequency point letter The network side device notifies the terminal device by high layer signaling; or is pre-agreed by the network side device and the terminal device.

The method according to claim 28, wherein the high layer signaling comprises: a system broadcast message or a radio resource control RRC signaling.

The method according to claim 28, wherein the frequency point information comprises: a frequency point number, a frequency band size, a frequency point position, and an initial access frequency point number.

The method according to claim 30, wherein when the control regions of each of the plurality of frequency points are combined in the same segment of the common control region, the frequency information is The method further includes: a start position of a control region of the adjacent frequency point pair, a frequency band occupied by the control region, and/or a frequency point occupied by the common information transmission region.

The method according to any one of claims 18 to 26, wherein the terminal device receives, by the network side device, the high-level signaling or the physical layer control signaling, that the terminal device needs to be migrated to Indication signaling for a specified frequency point.

33. The method according to claim 32, wherein the indication signaling is downlink physical layer control signaling with a frequency indication bit added.

The method according to claim 32, wherein the indication signaling is a physical downlink control channel command carrying a frequency indication bit PDCCH order;

After receiving the indication signaling, the terminal device further includes:

The terminal device initiates non-contention random access according to the PDCCH order at the specified frequency point; wherein, the network side device determines, according to the non-contention random access procedure of the terminal device, whether the terminal device is correct Complete the transfer of frequency points.

35. A network side device, comprising:

The indication module is configured to indicate, by signaling, a frequency point at which the terminal device performs data transmission.

The network side device according to claim 35, wherein each of the plurality of frequency points is configured with control signaling for scheduling data resources or other frequency points on the frequency point. Data resources on.

37. The network side device according to claim 35, wherein

The indication module is specifically configured to: indicate, by signaling, the initial access of the terminal device and the frequency of the initial data transmission; or/and, indicate, by signaling, a target frequency point of the terminal device to perform frequency point migration.

The network side device according to claim 37, wherein the indication module is specifically configured to: when the network side device receives a random access request initiated by the terminal device at a preset initial access frequency point And determining that the remaining resources on the initial access frequency are lower than the first threshold, sending, by the terminal device, first indication signaling, indicating that the terminal device migrates to a specified frequency point; or/and,

The network side device according to claim 35, wherein the configuration manner of the multiple frequency points comprises:

Sequential arrangement, adjacent frequency point back-to-back arrangement, adjacent frequency point composite transmission And an odd number of frequency points mixed arrangement.

The network side device according to claim 39, wherein the sequential arrangement comprises:

The network side device according to claim 39, wherein the adjacent frequency points are arranged in a back-to-back manner, and specifically:

The network side device according to claim 39, wherein the adjacent frequency point composite transmission manner specifically includes:

The network side device according to claim 42, wherein a common resource shared by the two frequency points is transmitted in a data resource region of one of the adjacent frequency points

The network side device according to any one of claims 41 to 43 wherein, when the number of the plurality of frequency points is an odd number, the plurality of frequency points are not paired with other frequency points. The control area of the frequency point is on the high frequency side or the frequency side of the frequency point.

The network side device according to any one of claims 35 to 43, wherein the frequency point information is notified by the network side device to the terminal device by using high layer signaling;

Or, the network side device and the terminal device pre-arrange.

The network side device according to claim 45, wherein the high layer signaling comprises: a system broadcast message or a radio resource control RRC signaling.

The network side device according to claim 45, wherein the frequency point information comprises: a frequency point number, a frequency band size, a frequency point position, and an initial access frequency point number.

The network side device according to claim 47, wherein when the control regions of each of the plurality of frequency points are combined in the same segment of the common control region, the frequency is The point information further includes: a start position of the control area of the adjacent frequency point pair, a frequency band occupied by the control area, and/or a frequency point occupied by the common information transmission area.

The network side device according to any one of claims 35-43, wherein the indication module is specifically configured to notify, by using high layer signaling or physical layer control signaling, that the terminal device needs to be migrated to a designation. Frequency.

The network side device according to claim 49, wherein the indication module is specifically configured to: add a frequency indication bit in the downlink physical layer control signaling to notify the terminal device that the migration needs to be specified Frequency.

The network side device according to claim 49, wherein the indication module is specifically configured to send, to the terminal device, a physical downlink control channel command PDCCH order carrying a frequency point indication bit, to indicate the terminal The device initiates a non-contention random access request to the designated frequency point; The network side device further includes:

a processing module, configured to receive a non-contention random access request initiated by the terminal device at the specified frequency point, and determine, according to the non-contention random access process of the terminal device, whether the terminal device correctly completes the frequency point transfer .

52. A terminal device, comprising:

The terminal device according to claim 52, wherein each of the plurality of frequency points is configured with control signaling for scheduling data resources or other frequency points on the frequency point. Data resources.

54. The terminal device of claim 52, wherein

The processing module is specifically configured to: determine, according to the indication signaling sent by the network side device, a frequency point for performing initial access and initial service data transmission; or/and, determining according to the indication signaling sent according to the network side device The target frequency of the frequency point migration.

The terminal device according to claim 54, wherein the processing module is configured to: when the receiving module receives the first indication signaling sent by the network side device, according to the first Instructing signaling to determine a target frequency point for performing frequency point migration; wherein, when the network side device receives a random access request initiated by the terminal device at a preset initial access frequency point, and determining the initial access frequency point When the remaining resources above are below the first threshold, The network side device sends the first indication signaling to the terminal device; or/and, when the receiving module receives the second indication signaling sent by the network side device, according to the second indication signaling Determining a target frequency point for performing frequency point migration; wherein, when the network side device determines that there is a frequency point in the system where the number of terminal devices is lower than a second threshold, and the remaining resources are greater than a third threshold, the The network side device sends the second indication signaling to the terminal device of the frequency point.

The terminal device according to claim 52, wherein the configuration manner of the multiple frequency points comprises:

The terminal device according to claim 56, wherein the sequential arrangement manner specifically includes:

The terminal device according to claim 56, wherein the adjacent frequency points are arranged in a back-to-back manner, which specifically includes:

The terminal device according to claim 56, wherein the adjacent frequency point composite transmission manner specifically includes: The control regions of each of the two adjacent frequency points are combined in the same segment of the common control region, and the data regions of the two frequency points are respectively extended to the outside of the common control region band; wherein, the frequency The data area occupied by the point and the control area occupy no more bandwidth than the bandwidth supported by the frequency point.

The terminal device according to claim 59, wherein the data resource region of one of the adjacent frequency points transmits the common information shared by the two frequency points.

The terminal device according to any one of claims 58 to 60, wherein when the number of the plurality of frequency points is an odd number, a frequency of the plurality of frequency points not paired with other frequency points The control area of the point is on the high frequency side or the frequency side of the frequency point.

The terminal device according to any one of claims 52 to 60, wherein the frequency point information is notified by the network side device to the terminal device by using high layer signaling;

Or, the network side device and the terminal device pre-arrange.

The terminal device according to claim 62, wherein the high layer signaling comprises: a system broadcast message or a radio resource control RRC signaling.

The terminal device according to claim 62, wherein the frequency point information comprises: a frequency point number, a frequency band size, a frequency point position, and an initial access frequency point number.

The terminal device according to claim 64, wherein when the control regions of each of the plurality of frequency points are combined in the same segment of the common control region, the frequency point is The information further includes: a starting position of the control area of the adjacent frequency point pair, a frequency band occupied by the control area, and/or a frequency point occupied by the common information transmission area.

The terminal device according to any one of claims 52 to 60, wherein the receiving module is specifically configured to receive, by the network side device, a high layer signaling or a physical layer control The signaling signal indicating the specified frequency point to which the terminal device needs to migrate.

The terminal device according to claim 66, wherein the indication signal is downlink physical layer control signaling with a frequency indication bit added.

The terminal device according to claim 66, wherein the indication signaling is a physical downlink control channel command PDCCH order carrying a frequency indication bit; the processing module is further configured to: when the receiving module After receiving the indication signaling, the non-contention random access is initiated according to the PDCCH order at the specified frequency point; wherein, the network side device determines, according to the non-contention random access process of the terminal device, Whether the terminal device correctly completes the transfer of frequency points.