CN109862615A - A kind of transmission method of paging control information, base station and terminal - Google Patents
A kind of transmission method of paging control information, base station and terminal Download PDFInfo
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Abstract
The present invention provides a kind of transmission method of paging control information, base station and terminals, wherein the method applied to base station includes: that the target data Channel holding time Dwell according to default paging cycle, in paging window of opportunity POW sends paging control information MPDCCH；Wherein, POW includes the radio frames mFrame at least one unauthorized frequency range enhancing machine type communication eMTC-U；One mFrame includes an a pilot channel Dwell and data channel Dwell；MPDCCH scrambling has paging mark P-RNTI.The embodiment of the present invention realizes the transmission of MPDCCH in eMTC-U system.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a transmission method of paging control information, a base station, and a terminal.
Background
MulteFire is a radio access technology that extends LTE to unlicensed bands, in which unlicensed band carriers can independently provide services without the help of licensed band carriers. In order to fairly occupy the unlicensed band channel and avoid mutual interference between other unlicensed band devices (e.g., WiFi devices), the mf (multe fire) physical layer introduces a Listen Before Talk (LBT) mechanism of carrier sensing technology similar to WiFi. When the base station or the terminal monitors that the unlicensed frequency band channel is occupied, namely LBT fails, the signal is stopped being sent, and when the channel is monitored to be idle, namely LBT succeeds, the signal is sent.
In order to improve the transmission efficiency of downlink common control signals of a base station under an LBT mechanism, MulteFire introduces a Discovery Reference Signal (DRS), and the DRS includes main downlink common control signals including system broadcast, Primary Synchronization Signal (PSS), Secondary Synchronization Signal (SSS), enhanced Primary synchronization Signal (ePSS), enhanced Secondary synchronization Signal (eSSS), Cell Reference Signal (CRS), main system Information Block (MIB) and enhanced system Information Block (SIB-MF). Wherein, the DRS occupies 12 or 14 symbols (symbols) in one downlink subframe.
In order to better support the internet of things service in the unlicensed frequency band, the multefer organization has researched an enhanced machine type communication (eMTC) technology in the unlicensed frequency band, namely, eMTC-U, and the eMTC technology is introduced into the unlicensed frequency band. The eMTC-U is a frequency modulation system working at 2.4GHz, 56 data channel frequency points and 3 pilot channel frequency points are provided in total, the bandwidth of each frequency point is 1.4MHz (approximately accounting for 80MHz in total), and the longest service time of a base station and a terminal for sending downlink or uplink at one data channel frequency point is 75 ms. The base station sends a 5ms pilot channel or an anchor channel (anchor channel) in the middle of the two frequency hopping, the pilot channel is fixed, the DRS in the eMTC-U needs to occupy 4 subframes, and the base station sends the DRS in the pilot channel. One pilot channel occupation time (dwell) and one data channel occupation time dwell are one mFrame (80 ms). The base station needs to perform channel access Detection (LBT) before jumping to a data channel and sending a pilot channel, after the LBT of the data channel succeeds, the base station firstly sends 12 Detection reference signals (Detection signals) of symbols to the UE, then uplink and downlink transmission can be started, the maximum channel occupation time of the base station is 60ms, and if the maximum channel occupation time exceeds 60ms, the base station still needs to send downlink data and needs to perform LBT again. The UE can judge that the LBT of the base station succeeds through the detected Detection Signal. The UE transmits the UL without LBT. The length of a frequency hopping sequence of the eMTC-U is 1024, the time of the system for traversing one frequency hopping sequence is 1024 x 80ms, the base station and the terminal determine the frequency hopping sequence according to the physical cell identification, and then determine the current frequency hopping point according to the frequency hopping point set, the current frame number and the hyper frame number.
In the eMTC-U, a base station sends Paging to UE in a Paging Opportunity Window (POW) of the UE according to a certain Paging cycle, in a data channel dwell where the POW of the UE is located, if LBT of the base station is successful, a Paging message of the UE is sent, and the UE in an idle state detects Paging control information (MPDCCH) scrambled by a Paging-Radio network temporary Identity (P-RNTI) in the POW occurring periodically.
However, because the eMTC-U frame format may be different from the eMTC frame format, the Paging transmission mode and the formula for calculating the Paging opportunity location (PO) in the existing eMTC technology are not suitable for the eMTC-U, and the eMTC-U system needs a new Paging transmission mode and a formula for calculating the Paging opportunity window location of the UE.
Disclosure of Invention
The embodiment of the invention provides a transmission method, a base station and a terminal of paging control information, and aims to solve the problems that in the prior eMTC technology, a paging transmission mode and a formula for calculating PO are not suitable for an eMTC-U, so that the eMTC-U cannot realize paging transmission and determine the position of a paging opportunity window of UE, and the communication reliability cannot be ensured.
In order to solve the foregoing technical problem, in a first aspect, an embodiment of the present invention provides a method for transmitting paging control information, which is applied to a base station, and includes:
according to a preset paging cycle, sending paging control information MPDCCH in target data channel occupation time Dwell in a paging opportunity window POW;
the POW comprises a wireless frame mFrame in at least one unlicensed frequency band enhanced machine type communication (eMTC-U); one mFrame includes one pilot channel Dwell and one data channel Dwell;
MPDCCH is scrambled with paging identification P-RNTI.
In a second aspect, an embodiment of the present invention provides a method for transmitting paging control information, which is applied to a terminal, and includes:
receiving paging control information MPDCCH in a target data channel occupation time Dwell in a paging opportunity window POW according to a preset paging cycle;
the POW comprises a wireless frame mFrame in at least one unlicensed frequency band enhanced machine type communication (eMTC-U); one mFrame includes one pilot channel Dwell and one data channel Dwell;
MPDCCH is scrambled with paging identification P-RNTI.
In a third aspect, an embodiment of the present invention provides a base station, including:
the first sending module is used for sending paging control information MPDCCH in a target data channel occupation time Dwell in a paging opportunity window POW according to a preset paging cycle;
the POW comprises a wireless frame mFrame in at least one unlicensed frequency band enhanced machine type communication (eMTC-U); one mFrame includes one pilot channel Dwell and one data channel Dwell;
MPDCCH is scrambled with paging identification P-RNTI.
In a fourth aspect, an embodiment of the present invention provides a base station, including a memory, a processor, and a computer program stored in the memory and executable on the processor, where the processor implements the steps of the transmission method of paging control information according to the first aspect when executing the program.
In a fifth aspect, an embodiment of the present invention provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps of the transmission method of paging control information according to the first aspect.
In a sixth aspect, an embodiment of the present invention provides a terminal, including:
the first receiving module is used for receiving paging control information MPDCCH in a target data channel occupation time Dwell in a paging opportunity window POW according to a preset paging cycle;
the POW comprises a wireless frame mFrame in at least one unlicensed frequency band enhanced machine type communication (eMTC-U); one mFrame includes one pilot channel Dwell and one data channel Dwell;
MPDCCH is scrambled with paging identification P-RNTI.
In a seventh aspect, an embodiment of the present invention provides a terminal, including a memory, a processor, and a computer program stored in the memory and executable on the processor, where the processor implements the steps of the transmission method of paging control information according to the second aspect when executing the program.
In an eighth aspect, the present invention provides a computer-readable storage medium, on which a computer program is stored, where the computer program is executed by a processor to implement the steps of the transmission method of paging control information according to the second aspect.
In the embodiment of the invention, the MPDCCH is transmitted on the target data channel Dwell in the POW according to the preset paging cycle, so that the MPDCCH can be transmitted in an Emtc-U system, and the problems that when the paging transmission mode in the existing eMTC technology is not suitable for the eMTC-U due to the fact that the eMTC-U frame format and the eMTC frame format are possibly different, the eMTC-U cannot realize paging transmission and cannot ensure the communication reliability are solved.
Drawings
Fig. 1 is a schematic flow chart illustrating paging control information applied to a base station in an embodiment of the present invention;
fig. 2 shows a first transmission diagram of MPDCCH in an embodiment of the present invention;
fig. 3 is a diagram illustrating a second transmission of MPDCCH in an embodiment of the present invention;
fig. 4 is a flowchart illustrating paging control information applied to a terminal according to an embodiment of the present invention;
FIG. 5 shows a block diagram of a base station in an embodiment of the invention;
fig. 6 shows a block diagram of a base station in an embodiment of the invention;
fig. 7 shows a block diagram of modules of a terminal in an embodiment of the invention;
fig. 8 shows a block diagram of a terminal in an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
As shown in fig. 1, an embodiment of the present invention provides a method for transmitting paging control information, which is applied to a base station, and includes:
step 101, according to a preset paging cycle, sending paging control information MPDCCH in a target data channel occupation time Dwell in a paging opportunity window POW.
The POW comprises a wireless frame mFrame in at least one unlicensed frequency band enhanced machine type communication (eMTC-U); one mFrame includes one pilot channel Dwell and one data channel Dwell; MPDCCH is scrambled with paging identification P-RNTI.
Here, the target data channel Dwell is any data channel Dwell that has successfully listened to before the LBT. Alternatively, the target data channel Dwell is the data channel Dwell for which the first LBT was successful.
When the paging control information MPDCCH is sent according to a preset paging cycle in the target data channel occupation time Dwell in the paging opportunity window POW, the starting MPDCCH may also be sent according to the preset paging cycle in the target downlink DL subframe in the target data channel Dwell in the POW. MPDCCH may be transmitted repeatedly up to 16 times, each transmission occupying one DL subframe.
Here, the DL subframe is a DL subframe in which the discovery reference signal DRS and the system broadcast are not transmitted on any one of the target data channels Dwell. Or, the target DL subframe is a DL subframe in which the first one of the target data channels Dwell does not transmit the DRS and the system broadcast.
Of course, as shown in fig. 2, before the paging control information MPDCCH is sent on the target data channel occupation time Dwell in the paging opportunity window POW according to the preset paging cycle, a sounding reference Signal Detection Signal needs to be sent on the data channel Dwell after LBT succeeds, so that the terminal determines, by detecting the Detection Signal, that LBT of the base station succeeds on the target data channel Dwell, and thus receives the MPDCCH on the target data channel Dwell.
Specifically, in eMTC-U, a base station sends a page to a UE in POW of the UE at a certain paging cycle, and in a data channel dwell (75ms) included in the POW of the UE, as shown in fig. 2, if LBT of the base station succeeds, the base station first sends a detective signal, and then the base station sends an MPDCCH of a UE paging message, and an idle-state UE detects an MPDCCH scrambled by a P-RNTI in the POW occurring periodically.
The POW is defined as a time window where a starting subframe for sending the MPDCCH is located, and the UE detects the MPDCCH in the POW. POWs of different UEs are not overlapped, and UEs with the same POW position multiplex the same paging message (PDSCH transmission block). In the eMTC-U system, the POW of the UE may include one or more mframes (i.e., one POW has a length of N × 80ms, where N is a positive integer). As shown in fig. 2, the preset paging cycle (T) includes 2 mframes, and the POW length is one mFrame.
Further, before transmitting the paging control information MPDCCH according to the preset paging cycle and the target data channel occupation time Dwell in the paging opportunity window POW, the method further includes:
determining the length of the POW, the minimum interval of POW starting wireless frames of different terminal UE in a preset paging cycle and the repetition times of the MPDCCH, wherein the minimum interval of the POW starting wireless frames of the different terminal UE in the preset paging cycle is greater than or equal to the length of the POW; the length of the POW, the minimum interval information of POW initial wireless frames of different UEs in a preset paging cycle and the number of times of repetition of the MPDCCH are sent to the UEs through system broadcast information; wherein the minimum interval information includes a paging parameter nB.
Therefore, the length of the POW, the minimum interval information of POW starting wireless frames of different UEs in a preset paging cycle and the repetition times of the MPDCCH are sent to the UE through system broadcast information, so that the UE is convenient for receiving the MPDCCH.
When the minimum interval of POW initial wireless frames of different UEs in a preset paging cycle is determined, the value of nB is required to be determined, wherein nB is more than or equal to 1 and less than or equal to T/8; and then according to the value of nB and the preset paging cycle, determining the minimum interval D of the initial wireless frames of POWs of different UEs in the preset paging cycle by the following formula: d is T/nB; wherein D represents the minimum interval of the initial wireless frames of the POWs of different UEs in the preset paging cycle; t denotes a preset paging cycle in units of radio frame numbers.
The nB parameter can determine the minimum interval of the start frames of POWs of different UEs in the preset paging cycle, and therefore nB should be less than or equal to T/8 and greater than or equal to 1, so that the minimum interval of the start frames of POWs of different UEs can be ensured to be not less than 80ms, and the minimum interval of the start radio frames of POWs of different UEs in the preset paging cycle is less than or equal to the preset paging cycle. Meanwhile, nB should be able to guarantee that the minimum interval of the start frames of POWs of different UEs is not less than the length of the POW, i.e., the length of the POW is less than or equal to T/nB.
Furthermore, before transmitting the paging control information MPDCCH according to the preset paging cycle and the target data channel occupation time Dwell in the paging opportunity window POW, the method further includes:
calculating a system frame number SFN of an initial wireless frame of the POW according to a preset paging cycle, a terminal identification UE _ ID and a paging parameter nB by the following formula, and determining the POW according to the system frame number; wherein,
SFN mod T＝(T div N)*(UE_ID mod N)；
wherein, the SFN represents the system frame number of the initial wireless frame of the POW;
t represents a preset paging cycle in units of radio frame numbers;
the value of N is min (T, nB), and the value of nB is less than or equal to T/8;
the UE _ ID takes the value calculated by the international mobile subscriber identity IMSI mod 16384.
Specifically, T may take the value of 16, 32, 64, or 128; nB can take the value of T/8, T/16, T/32, T/64, T/128 or T/256. Of course, the values of T and nB are not specifically limited herein.
The system frame number SFN of the initial wireless frame of the POW is determined through the formula, so that the initial wireless frame of the POW can be determined according to the system frame number, and the problem that when the formula for calculating PO by the eMTC is not suitable for the eMTC-U due to the fact that the eMTC-U frame format is possibly different from the eMTC frame format, the eMTC-U cannot calculate the position of the POW is solved.
For example, if the preset paging cycle T of the UE is 64, the length of the POW is 80ms (i.e., 1 mFrame), nB is T/16 (the interval of the POW start frame is guaranteed to be 160ms), and the start radio frame number of the POW satisfies SFN mod 64 ═ 0, 16, 32, and 48.
For another example, the preset paging cycle T of the UE is 16, the length of the POW is 160ms (2 mframes), nB is T/16, and the starting radio frame interval of the POW of different UEs is 160ms, then the starting frame number of the POW satisfies SFN mod 64 ═ 0, as shown in fig. 3, the base station may attempt to send mPDCCH on 2 data channels Dwell of the POW, that is, send mPDCCH when LBT succeeds.
In addition, further, after the paging control information MPDCCH is transmitted according to a preset paging cycle and in the target data channel occupation time Dwell in the paging opportunity window POW, the method further includes:
transmitting a paging message in a DL subframe after two subframes after the MPDCCH is transmitted; the paging message comprises paging information used for sending to target UE, and the target UE is UE with the same position as the POW used for sending the MPDCCH.
And the base station transmits the paging message through the DL subframe after the MPDCCH is transmitted, so that the transmission of the paging message in the eMTC-U system is realized, and the reliability of communication is ensured.
The UE in the embodiment of the present invention may be a mobile phone (or a mobile phone), or other devices capable of sending or receiving wireless signals, including a user equipment (terminal), a personal digital assistant PDA, a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless phone, a Wireless Local Loop (WLL) station, a CPE or Mifi capable of converting a mobile signal into a wifi signal, an intelligent appliance, or other devices capable of autonomously communicating with a mobile communication network without human operation.
The transmission method of the paging control information of the embodiment of the invention realizes the transmission of the MPDCCH in the eMTC-U system by sending the MPDCCH in the target data channel Dwell in the POW according to the preset paging cycle, and solves the problems that when the paging transmission mode in the prior eMTC technology is not suitable for the eMTC-U due to the fact that the eMTC-U frame format and the eMTC frame format are possibly different, the eMTC-U can not realize the paging transmission and can not ensure the communication reliability.
As shown in fig. 4, an embodiment of the present invention provides a method for transmitting paging control information, which is applied to a terminal, and the method includes:
step 401, according to a preset paging cycle, receiving paging control information MPDCCH in a target data channel occupation time Dwell in a paging opportunity window POW.
The POW comprises a wireless frame mFrame in at least one unlicensed frequency band enhanced machine type communication (eMTC-U); one mFrame includes one pilot channel Dwell and one data channel Dwell; MPDCCH is scrambled with paging identification P-RNTI.
Here, the target data channel Dwell is a data channel Dwell for which any one base station listens before says that LBT succeeds. Alternatively, the target data channel Dwell is the data channel Dwell successfully transmitted by the first base station LBT.
When receiving the paging control information MPDCCH in the target data channel occupation time Dwell in the paging opportunity window POW according to the preset paging cycle, the starting MPDCCH may also be received in the target downlink DL subframe in the target data channel Dwell in the POW according to the preset paging cycle. The terminal may receive a maximum of 16 repeated transmissions of MPDCCH, each transmission occupying one DL subframe.
Here, the DL subframe is a DL subframe in which the discovery reference signal DRS and the system broadcast are not transmitted on any one of the target data channels Dwell. Or, the target DL subframe is a DL subframe in which the first one of the target data channels Dwell does not transmit the DRS and the system broadcast.
Of course, as shown in fig. 2, before receiving the paging control information MPDCCH according to the preset paging cycle in the target data channel occupation time Dwell in the paging opportunity window POW, the sounding reference Signal Detection Signal is received on the target data channel Dwell to determine that the LBT of the base station on the target data channel Dwell is successful. Specifically, when the UE receives the MPDCCH in the POW, Detection Signal Detection needs to be performed on the data channel Dwell in the POW to determine the target data channel in the POW, that is, the data channel Dwell successfully received by the base station LBT, so as to receive the MPDCCH on the target data channel Dwell.
As shown in fig. 2, a base station sends a page to a UE in a POW of the UE at a certain paging cycle, and in a data channel Dwell (75ms) included in the POW of the UE, if a base station LBT succeeds, a Detection Signal is sent first, then the base station sends an MPDCCH of a UE paging message, and an idle-state UE performs Detection of the Detection Signal on a data channel Dwell in the POW occurring periodically, and if the Detection Signal is successfully detected, it is determined that the base station LBT succeeds, and then detects the MPDCCH scrambled by a P-RNTI in a DL subframe in the data channel Dwell.
The POW is defined as a time window where a starting subframe for sending the MPDCCH is located, and the UE detects the MPDCCH in the POW. POWs of different UEs are not overlapped, and UEs with the same POW position multiplex the same paging message (PDSCH transmission block). In the eMTC-U system, the POW of the UE may include one or more mframes (i.e., one POW has a length of N × 80ms, where N is a positive integer). As shown in fig. 2, the preset paging cycle (T) includes 2 mframes, and the POW length is one mFrame.
Further, before receiving the paging control information MPDCCH according to the preset paging cycle and the target data channel occupation time Dwell in the paging opportunity window POW, the method further includes:
receiving the length of a POW (point of sale) sent by a base station, the minimum interval information of POW initial radio frames of different UEs in a preset paging cycle and the number of times of repetition of an MPDCCH (multi-program control channel) through system broadcast information; wherein the minimum interval information includes a paging parameter nB.
Therefore, the UE is convenient for receiving the MPDCCH through the length of the POW sent by the system broadcast information receiving base station, the minimum interval information of POW starting radio frames of different UEs in a preset paging cycle and the repetition times of the MPDCCH.
Furthermore, before receiving the paging control information MPDCCH according to the preset paging cycle and the target data channel occupation time Dwell in the paging opportunity window POW, the method further includes:
calculating a system frame number SFN of an initial wireless frame of the POW according to a preset paging cycle, a terminal identification UE _ ID and a paging parameter nB by the following formula, and determining the POW according to the system frame number; wherein,
SFN mod T＝(T div N)*(UE_ID mod N)；
wherein, the SFN represents the system frame number of the initial wireless frame of the POW;
t represents a preset paging cycle in units of radio frame numbers;
the value of N is min (T, nB), and the value of nB is less than or equal to T/8;
the UE _ ID takes the value calculated by the international mobile subscriber identity IMSI mod 16384.
Specifically, T may take the value of 16, 32, 64, or 128; nB can take the value of T/8, T/16, T/32, T/64, T/128 or T/256. Of course, the values of T and nB are not specifically limited herein.
The system frame number SFN of the initial wireless frame of the POW is determined through the formula, so that the initial wireless frame of the POW can be determined according to the system frame number, and the problem that when the formula for calculating PO by the eMTC is not suitable for the eMTC-U due to the fact that the eMTC-U frame format is possibly different from the eMTC frame format, the eMTC-U cannot calculate the position of the POW is solved.
For example, if the preset paging cycle T of the UE is 64, the length of the POW is 80ms (i.e., 1 mFrame), nB is T/16 (the interval of the POW start frame is guaranteed to be 160ms), and the start radio frame number of the POW satisfies SFN mod 64 ═ 0, 16, 32, and 48.
For another example, the preset paging cycle T of the UE is 16, the length of the POW is 160ms (2 mframes), nB is T/16, and the starting radio frame interval of the POW of different UEs is 160ms, then the starting frame number of the POW satisfies SFN mod 64 ═ 0, as shown in fig. 3, the base station may attempt to send mPDCCH on 2 data channels Dwell of the POW, that is, send mPDCCH when LBT succeeds.
In addition, further, after receiving the paging control information MPDCCH according to the preset paging cycle and at the target data channel occupation time Dwell in the paging opportunity window POW, the method further includes:
receiving a paging message in a DL subframe after two subframes after the MPDCCH is received; the paging message includes paging information sent to the terminal.
The terminal receives the paging message through the DL subframe after the MPDCCH is received, so that the paging message in the eMTC-U system is received, and the reliability of communication is ensured.
In the transmission method of paging control information provided in this embodiment, the MPDCCH is received on the target data channel Dwell in the POW according to the preset paging cycle, so that transmission of the MPDCCH in the eMTC-U system is achieved, and the problems that when a paging transmission mode in the existing eMTC technology is not suitable for the eMTC-U due to the fact that an eMTC-U frame format and an eMTC frame format may be different, the eMTC-U cannot achieve paging transmission and cannot guarantee communication reliability are solved.
As shown in fig. 5, an embodiment of the present invention further provides a base station, including:
a first sending module 501, configured to send paging control information MPDCCH in a target data channel occupation time Dwell in a paging opportunity window POW according to a preset paging cycle;
the POW comprises a wireless frame mFrame in at least one unlicensed frequency band enhanced machine type communication (eMTC-U); one mFrame includes one pilot channel Dwell and one data channel Dwell;
MPDCCH is scrambled with paging identification P-RNTI.
Optionally, the target data channel Dwell is any data channel Dwell that successfully listens before says LBT.
Optionally, the target data channel Dwell is a data channel Dwell for which the first LBT succeeds.
Optionally, the base station further includes:
and a second sending module, configured to send the sounding reference signal on the data channel Dwell after the LBT is successful.
Optionally, the first sending module is further configured to send the starting MPDCCH in a target downlink DL subframe in a target data channel Dwell in the POW according to a preset paging cycle.
Optionally, the target DL subframe is a DL subframe in which any one of the target data channels Dwell does not transmit the discovery reference signal DRS and the system broadcast.
Optionally, the target DL subframe is a DL subframe in which the first one of the target data channels Dwell does not transmit the DRS and the system broadcast.
Optionally, the base station further includes:
the calculation module is used for calculating a system frame number SFN of the initial wireless frame of the POW according to a preset paging cycle, a terminal identification UE _ ID and a paging parameter nB by the following formula and determining the POW according to the system frame number; wherein,
SFN mod T＝(T div N)*(UE_ID mod N)；
wherein the SFN represents a system frame number of a starting wireless frame of the POW;
t represents a preset paging cycle in units of radio frame numbers;
the value of N is min (T, nB), and the value of nB is less than or equal to T/8;
the UE _ ID takes the value calculated by the international mobile subscriber identity IMSI mod 16384.
Optionally, the base station further includes:
the determining module is used for determining the length of the POW, the minimum interval of POW starting wireless frames of different terminal UEs in a preset paging cycle and the repetition times of the MPDCCH, wherein the minimum interval of the POW starting wireless frames of the different terminal UEs in the preset paging cycle is greater than or equal to the length of the POW;
the third sending module is used for sending the length of the POW, the minimum interval information of POW starting wireless frames of different UEs in a preset paging cycle and the repetition times of the MPDCCH to the UEs through system broadcast information; wherein the minimum interval information includes a paging parameter nB.
Optionally, the determining module includes:
a first determining unit, configured to determine a value of nB, where nB is greater than or equal to 1 and less than or equal to T/8;
a second determining unit, configured to determine, according to the value of nB and the preset paging cycle, a minimum interval D of starting radio frames of POWs of different UEs in the preset paging cycle by using the following formula:
D＝T/nB；
wherein D represents the minimum interval of the initial wireless frames of the POWs of different UEs in the preset paging cycle;
t denotes a preset paging cycle in units of radio frame numbers.
Optionally, the base station further includes:
a fourth sending module, configured to send a paging message in a DL subframe after two subframes after the MPDCCH is sent; the paging message comprises paging information sent to target UE, and the target UE is UE with the same position as the POW used for sending the MPDCCH.
The base station of the embodiment of the invention transmits the MPDCCH in the target data channel Dwell in the POW according to the preset paging cycle, so that the transmission of the MPDCCH can be realized in an eMTC-U system, and the problems that when the paging transmission mode in the existing eMTC technology is not suitable for the eMTC-U due to the fact that the eMTC-U frame format and the eMTC frame format are possibly different, the eMTC-U cannot realize paging transmission and cannot ensure the communication reliability are solved.
It should be noted that the base station of the embodiment of the present invention can implement the steps in the above-mentioned method embodiment applied to the base station, and can achieve the same technical effect.
In an embodiment of the present invention, there is also provided a base station, comprising a memory, a processor and a computer program stored on the memory and executable on the processor; the processor implements the procedures of the transmission method embodiment of the paging control information applied to the base station as described above when executing the program, and can achieve the same effect, and is not described here again to avoid repetition.
The embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored, and when the computer program is executed by a processor, the computer program implements each process of the transmission method for paging control information, and can achieve the same technical effect, and is not described herein again to avoid repetition. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.
Preferably, referring to fig. 6, an embodiment of the present invention further provides a base station, including:
a processor 601, configured to control the transceiver 602 to send paging control information MPDCCH in a target data channel occupation time Dwell in a paging opportunity window POW according to a preset paging cycle; the POW comprises a wireless frame mFrame in at least one unlicensed frequency band enhanced machine type communication (eMTC-U); one mFrame includes one pilot channel Dwell and one data channel Dwell; MPDCCH is scrambled with paging identification P-RNTI.
The processor 601 in the embodiment of the present invention may be configured to implement the functions implemented by all the modules in the foregoing base station embodiment, and may also achieve the same technical effects as those achieved by the foregoing base station embodiment.
As shown in fig. 7, an embodiment of the present invention further provides a terminal, including:
a first receiving module 701, configured to receive paging control information MPDCCH in a target data channel occupation time Dwell in a paging opportunity window POW according to a preset paging cycle;
the POW comprises a wireless frame mFrame in at least one unlicensed frequency band enhanced machine type communication (eMTC-U); one mFrame includes one pilot channel Dwell and one data channel Dwell;
MPDCCH is scrambled with paging identification P-RNTI.
Optionally, the target data channel Dwell is a data channel Dwell for which any base station listens before says LBT succeeds.
Optionally, the target data channel Dwell is a data channel Dwell successfully received by the first base station LBT.
Optionally, the terminal further includes:
a second receiving module, configured to receive a sounding reference signal on the target data channel Dwell to determine that LBT of the base station on the target data channel Dwell is successful.
Optionally, the first receiving module is configured to receive, according to a preset paging cycle, the starting MPDCCH in a target downlink DL subframe in a target data channel Dwell in the POW.
Optionally, the target DL subframe is a DL subframe in which any one of the target data channels Dwell does not transmit the discovery reference signal DRS and the system broadcast.
Optionally, the target DL subframe is a DL subframe in which the first one of the target data channels Dwell does not transmit the DRS and the system broadcast.
Optionally, the terminal further includes:
the calculation module is used for calculating a system frame number SFN of the initial wireless frame of the POW according to a preset paging cycle, a terminal identification UE _ ID and a paging parameter nB by the following formula and determining the POW according to the system frame number; wherein,
SFN mod T＝(T div N)*(UE_ID mod N)；
wherein the SFN represents a system frame number of a starting wireless frame of the POW;
t represents a preset paging cycle in units of radio frame numbers;
the value of N is min (T, nB), and the value of nB is less than or equal to T/8;
the UE _ ID takes the value calculated by the international mobile subscriber identity IMSI mod 16384.
Optionally, the terminal further includes:
the third receiving module is used for receiving the length of the POW, the minimum interval information of POW initial radio frames of different UEs in a preset paging cycle and the number of times of repeating the MPDCCH, which are sent by the base station through system broadcast information; wherein the minimum interval information includes a paging parameter nB.
Optionally, the terminal further includes:
a fourth receiving module, configured to receive a paging message in a DL subframe after two subframes after the MPDCCH is received; wherein the paging message includes paging information sent to the terminal.
It should be noted that the terminal according to the embodiment of the present invention can implement the steps in the above-mentioned method embodiment applied to the terminal, and can achieve the same technical effect.
In an embodiment of the present invention, there is also provided a terminal, including a memory, a processor, and a computer program stored on the memory and executable on the processor; the processor implements the processes of the transmission method embodiment of the paging control information when executing the program, and can achieve the same technical effect, and for avoiding repetition, the details are not repeated here.
The embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored, and when the computer program is executed by a processor, the computer program implements each process of the transmission method for paging control information, and can achieve the same technical effect, and is not described herein again to avoid repetition. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.
Preferably, as shown in fig. 8, an embodiment of the present invention further provides a terminal, including:
a processor 801, configured to control the transceiver 802 to receive the paging control information MPDCCH in a target data channel occupation time Dwell in the paging opportunity window POW according to a preset paging cycle; the POW comprises a wireless frame mFrame in at least one unlicensed frequency band enhanced machine type communication (eMTC-U); one mFrame includes one pilot channel Dwell and one data channel Dwell; MPDCCH is scrambled with paging identification P-RNTI.
The processor of the embodiment of the present invention may be configured to implement the functions implemented by all the modules in the terminal embodiment, and may also achieve the same technical effects as those achieved by the terminal embodiment.
In various embodiments of the present invention, it should be understood that the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
A1, a method for transmitting paging control information, applied to a base station, comprising:
according to a preset paging cycle, sending paging control information MPDCCH in target data channel occupation time Dwell in a paging opportunity window POW;
the POW comprises a wireless frame mFrame in at least one unlicensed frequency band enhanced machine type communication (eMTC-U); one mFrame includes one pilot channel Dwell and one data channel Dwell;
MPDCCH is scrambled with paging identification P-RNTI.
A2, the method of claim a1, wherein the target data channel Dwell is any data channel Dwell which listens before says LBT succeeds.
A3, the method according to claim A1, wherein the target data channel Dwell is the first LBT successful data channel Dwell.
A4, the method according to claim a2 or A3, wherein the step of sending paging control information MPDCCH according to a preset paging cycle and in a target data channel occupation time Dwell in a paging opportunity window POW further comprises:
transmitting a sounding reference signal on a data channel Dwell after the LBT is successful.
A5, the method according to claim a1, wherein the step of sending paging control information MPDCCH according to a preset paging cycle in a target data channel occupation time Dwell in a paging opportunity window POW includes:
and according to a preset paging cycle, transmitting the starting MPDCCH in a target downlink DL subframe in a target data channel Dwell in the POW.
A6, the method according to claim a5, wherein the DL subframe is a DL subframe in which no discovery reference signal DRS and no system broadcast is transmitted in any one of the target data channels Dwell.
A7, the method of claim A5, wherein the DL subframe is the first DL subframe in a target data channel Dwell where DRS and system broadcast are not transmitted.
A8, the method according to claim a1, wherein the step of sending paging control information MPDCCH according to a preset paging cycle in a target data channel occupation time Dwell in a paging opportunity window POW further includes:
calculating a system frame number SFN of an initial wireless frame of the POW according to a preset paging cycle, a terminal identification UE _ ID and a paging parameter nB by the following formula, and determining the POW according to the system frame number; wherein,
SFN mod T＝(T div N)*(UE_ID mod N)；
wherein the SFN represents a system frame number of a starting wireless frame of the POW;
t represents a preset paging cycle in units of radio frame numbers;
the value of N is min (T, nB), and the value of nB is less than or equal to T/8;
the UE _ ID takes the value calculated by the international mobile subscriber identity IMSI mod 16384.
A9, the method according to claim a1, wherein the step of sending paging control information MPDCCH according to a preset paging cycle in a target data channel occupation time Dwell in a paging opportunity window POW further includes:
determining the length of the POW, the minimum interval of POW starting wireless frames of different terminal UEs in a preset paging cycle and the repetition times of the MPDCCH, wherein the minimum interval of the POW starting wireless frames of the different UEs in the preset paging cycle is greater than or equal to the length of the POW;
sending the length of the POW, the minimum interval information of POW initial radio frames of different UEs in a preset paging cycle and the repetition times of the MPDCCH to the UEs through system broadcast information; wherein the minimum interval information includes a paging parameter nB.
A10, the method according to claim A9, wherein the step of determining the length of the POW, the minimum interval of the POW start radio frames of different terminals UE in a preset paging cycle, and the number of times of repetition of the MPDCCH comprises:
determining the value of nB, wherein nB is more than or equal to 1 and less than or equal to T/8;
according to the value of nB and the preset paging cycle, determining the minimum interval D of the initial wireless frames of POWs of different UEs in the preset paging cycle by the following formula:
D＝T/nB；
wherein D represents the minimum interval of the initial wireless frames of the POWs of different UEs in the preset paging cycle;
t denotes a preset paging cycle in units of radio frame numbers.
A11, the method according to claim a1, wherein the step of sending paging control information MPDCCH according to a preset paging cycle in a target data channel occupation time Dwell in a paging opportunity window POW further includes:
transmitting a paging message in a DL subframe after two subframes after the MPDCCH is transmitted; the paging message comprises paging information sent to target UE, and the target UE is UE with the same position as the POW used for sending the MPDCCH.
B12, a method for transmitting paging control information, applied to a terminal, comprising:
receiving paging control information MPDCCH in a target data channel occupation time Dwell in a paging opportunity window POW according to a preset paging cycle;
the POW comprises a wireless frame mFrame in at least one unlicensed frequency band enhanced machine type communication (eMTC-U); one mFrame includes one pilot channel Dwell and one data channel Dwell;
MPDCCH is scrambled with paging identification P-RNTI.
B13, the method of claim B12, wherein the target data channel Dwell is a data channel Dwell for which any base station listens before says LBT succeeds.
B14, the method of claim B12, wherein the target data channel Dwell is a data channel Dwell successfully transmitted by the first base station LBT.
B15, the method according to claim B13 or B14, wherein the step of receiving paging control information MPDCCH according to a preset paging cycle at a target data channel occupation time Dwell in a paging opportunity window POW further comprises:
receiving sounding reference signals on the target data channel Dwell to determine that the LBT of the base station is successful on the target data channel Dwell.
B16, the method according to claim B12, wherein the step of receiving paging control information MPDCCH according to a preset paging cycle and in a target data channel occupation time Dwell in a paging opportunity window POW comprises:
and according to a preset paging cycle, receiving a starting MPDCCH in a target downlink DL subframe in a target data channel Dwell in the POW.
B17, the method according to claim B16, wherein the target DL sub-frame is a DL sub-frame in which no discovery reference signal DRS or system broadcast is transmitted in any one of target data channels Dwell.
B18, the method of claim B16, wherein the DL subframe is a DL subframe in which DRS and system broadcast are not transmitted in the first Dwell of the target data channel.
B19, the method according to claim B12, wherein the step of receiving paging control information MPDCCH according to a preset paging cycle at a target data channel occupation time Dwell in a paging opportunity window POW further comprises:
calculating a system frame number SFN of an initial wireless frame of the POW according to a preset paging cycle, a terminal identification UE _ ID and a paging parameter nB by the following formula, and determining the POW according to the system frame number; wherein,
SFN mod T＝(T div N)*(UE_ID mod N)；
wherein the SFN represents a system frame number of a starting wireless frame of the POW;
t represents a preset paging cycle in units of radio frame numbers;
the value of N is min (T, nB), and the value of nB is less than or equal to T/8;
the UE _ ID takes the value calculated by the international mobile subscriber identity IMSI mod 16384.
B20, the method according to claim B12, wherein the step of receiving paging control information MPDCCH according to a preset paging cycle at a target data channel occupation time Dwell in a paging opportunity window POW further comprises:
receiving the length of the POW, the minimum interval information of POW initial radio frames of different terminal UEs in a preset paging cycle and the repetition times of the MPDCCH, which are sent by a base station through system broadcast information; wherein the minimum interval information includes a paging parameter nB.
B21, the method according to claim B12, wherein the step of receiving paging control information MPDCCH according to a preset paging cycle at a target data channel occupation time Dwell in a paging opportunity window POW further comprises:
receiving a paging message in a DL subframe after two subframes after the MPDCCH is received; wherein the paging message includes paging information sent to the terminal.
C22, a base station, comprising:
the first sending module is used for sending paging control information MPDCCH in a target data channel occupation time Dwell in a paging opportunity window POW according to a preset paging cycle;
the POW comprises a wireless frame mFrame in at least one unlicensed frequency band enhanced machine type communication (eMTC-U); one mFrame includes one pilot channel Dwell and one data channel Dwell;
MPDCCH is scrambled with paging identification P-RNTI.
C23, the base station of claim C22, wherein the target data channel Dwell is any data channel Dwell which listens before says that LBT succeeds.
C24, the base station of claim C22, wherein the target data channel Dwell is the first LBT successful data channel Dwell.
C25, the base station of claim C23 or C24, wherein the base station further comprises:
and a second sending module, configured to send a sounding reference signal on the data channel Dwell after the LBT is successful.
C26, the base station according to claim C22, wherein the first sending module is further configured to send the starting MPDCCH in a target downlink DL subframe in a target data channel Dwell in the POW according to a preset paging cycle.
C27, the base station according to claim C26, wherein the DL subframe is a DL subframe in which no discovery reference signal DRS or system broadcast is transmitted on any one of the target data channels Dwell.
C28, the base station of claim C26, wherein the DL subframe of interest is a DL subframe in which the DRS and system broadcast are not transmitted in the first DL subframe of the object data channel Dwell.
C29, the base station of claim C22, wherein the base station further comprises:
the calculation module is used for calculating a system frame number SFN of the initial wireless frame of the POW according to a preset paging cycle, a terminal identification UE _ ID and a paging parameter nB by the following formula and determining the POW according to the system frame number; wherein,
SFN mod T＝(T div N)*(UE_ID mod N)；
wherein the SFN represents a system frame number of a starting wireless frame of the POW;
t represents a preset paging cycle in units of radio frame numbers;
the value of N is min (T, nB), and the value of nB is less than or equal to T/8;
the UE _ ID takes the value calculated by the international mobile subscriber identity IMSI mod 16384.
C30, the base station of claim C22, wherein the base station further comprises:
the determining module is used for determining the length of the POW, the minimum interval of POW starting wireless frames of different terminal UEs in a preset paging cycle and the repetition times of the MPDCCH, wherein the minimum interval of the POW starting wireless frames of the different terminal UEs in the preset paging cycle is greater than or equal to the length of the POW;
the third sending module is used for sending the length of the POW, the minimum interval information of POW starting wireless frames of different UEs in a preset paging cycle and the repetition times of the MPDCCH to the UEs through system broadcast information; wherein the minimum interval information includes a paging parameter nB.
C31, the base station of claim C30, wherein the determining module comprises:
a first determining unit, configured to determine a value of nB, where nB is greater than or equal to 1 and less than or equal to T/8;
a second determining unit, configured to determine, according to the value of nB and the preset paging cycle, a minimum interval D of starting radio frames of POWs of different UEs in the preset paging cycle by using the following formula:
D＝T/nB；
wherein D represents the minimum interval of the initial wireless frames of the POWs of different UEs in the preset paging cycle;
t denotes a preset paging cycle in units of radio frame numbers.
C32, the base station of claim C22, wherein the base station further comprises:
a fourth sending module, configured to send a paging message in a DL subframe after two subframes after the MPDCCH is sent; the paging message comprises paging information sent to target UE, and the target UE is UE with the same position as the POW used for sending the MPDCCH.
D33, a base station comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor when executing the program implementing the steps of the method of transmission of paging control information according to any of claims a1-a 11.
E34, a computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method for transmission of paging control information according to any one of claims a1-a 11.
F35, a terminal, comprising:
the first receiving module is used for receiving paging control information MPDCCH in a target data channel occupation time Dwell in a paging opportunity window POW according to a preset paging cycle;
the POW comprises a wireless frame mFrame in at least one unlicensed frequency band enhanced machine type communication (eMTC-U); one mFrame includes one pilot channel Dwell and one data channel Dwell;
MPDCCH is scrambled with paging identification P-RNTI.
F36, the terminal of claim F35, wherein the target data channel Dwell is a data channel Dwell for which any base station listens before says that LBT succeeds.
F37, the terminal of claim F35, wherein the target data channel Dwell is a data channel Dwell successfully transmitted by the first base station LBT.
F38, terminal according to claim F36 or F37, characterized in that the terminal further comprises:
a second receiving module, configured to receive a sounding reference signal on the target data channel Dwell to determine that LBT of the base station on the target data channel Dwell is successful.
F39, the terminal of claim F35, wherein the first receiving module is configured to receive the starting MPDCCH in a target downlink DL subframe in a target data channel Dwell in the POW according to a preset paging cycle.
F40, the terminal of claim F39, wherein the DL subframe is a DL subframe in which no discovery reference signal DRS or system broadcast is transmitted on any one of the target data channels Dwell.
F41, the terminal of claim F39, wherein the DL subframe is a DL subframe in which DRS and system broadcast are not transmitted in the first of target data channels Dwell.
F42, the terminal according to claim F35, further comprising:
the calculation module is used for calculating a system frame number SFN of the initial wireless frame of the POW according to a preset paging cycle, a terminal identification UE _ ID and a paging parameter nB by the following formula and determining the POW according to the system frame number; wherein,
SFN mod T＝(T div N)*(UE_ID mod N)；
wherein the SFN represents a system frame number of a starting wireless frame of the POW;
t represents a preset paging cycle in units of radio frame numbers;
the value of N is min (T, nB), and the value of nB is less than or equal to T/8;
the UE _ ID takes the value calculated by the international mobile subscriber identity IMSI mod 16384.
F43, the terminal according to claim F35, further comprising:
the third receiving module is used for receiving the length of the POW, the minimum interval information of POW initial wireless frames of different terminals UE in a preset paging cycle and the number of times of repeating the MPDCCH, which are sent by the base station through system broadcast information; wherein the minimum interval information includes a paging parameter nB.
F44, the terminal according to claim F35, further comprising:
a fourth receiving module, configured to receive a paging message in a DL subframe after two subframes after the MPDCCH is received; wherein the paging message includes paging information sent to the terminal.
G45, a terminal comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor when executing the program implementing the steps of the method for transmission of paging control information according to any of claims B12-B21.
H46, a computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method for transmission of paging control information according to any of claims B12-B21.
Claims (10)
1. A transmission method of paging control information is applied to a base station, and is characterized by comprising the following steps:
according to a preset paging cycle, sending paging control information MPDCCH in target data channel occupation time Dwell in a paging opportunity window POW;
the POW comprises a wireless frame mFrame in at least one unlicensed frequency band enhanced machine type communication (eMTC-U); one mFrame includes one pilot channel Dwell and one data channel Dwell;
MPDCCH is scrambled with paging identification P-RNTI.
2. The method of claim 1, wherein the target data channel Dwell is any data channel Dwell that is successful in listen before talk, LBT.
3. The method of claim 1, wherein the step of sending paging control information MPDCCH in the paging opportunity window POW for the target data channel occupation time Dwell according to the preset paging cycle comprises:
and according to a preset paging cycle, transmitting the starting MPDCCH in a target downlink DL subframe in a target data channel Dwell in the POW.
4. The method of claim 3, wherein the target DL subframe is a DL subframe in which no Discovery Reference Signal (DRS) and no system broadcast are transmitted on any one of target data channels (Dwell).
5. A transmission method of paging control information is applied to a terminal, and is characterized by comprising the following steps:
receiving paging control information MPDCCH in a target data channel occupation time Dwell in a paging opportunity window POW according to a preset paging cycle;
the POW comprises a wireless frame mFrame in at least one unlicensed frequency band enhanced machine type communication (eMTC-U); one mFrame includes one pilot channel Dwell and one data channel Dwell;
MPDCCH is scrambled with paging identification P-RNTI.
6. The method of claim 5 wherein the target data channel Dwell is a data channel Dwell in which any base station listens before says LBT succeeds.
7. The method of claim 5, wherein the step of receiving paging control information MPDCCH according to a preset paging cycle and a target data channel occupation time Dwell in a paging opportunity window POW comprises:
and according to a preset paging cycle, receiving a starting MPDCCH in a target downlink DL subframe in a target data channel Dwell in the POW.
8. The method of claim 7, wherein the target DL subframe is a DL subframe in which no Discovery Reference Signal (DRS) and no system broadcast are transmitted on any one of target data channels (Dwell).
9. A base station, comprising:
the first sending module is used for sending paging control information MPDCCH in a target data channel occupation time Dwell in a paging opportunity window POW according to a preset paging cycle;
the POW comprises a wireless frame mFrame in at least one unlicensed frequency band enhanced machine type communication (eMTC-U); one mFrame includes one pilot channel Dwell and one data channel Dwell;
MPDCCH is scrambled with paging identification P-RNTI.
10. A terminal, comprising:
the first receiving module is used for receiving paging control information MPDCCH in a target data channel occupation time Dwell in a paging opportunity window POW according to a preset paging cycle;
the POW comprises a wireless frame mFrame in at least one unlicensed frequency band enhanced machine type communication (eMTC-U); one mFrame includes one pilot channel Dwell and one data channel Dwell;
MPDCCH is scrambled with paging identification P-RNTI.
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| CN114788334A (en) * | 2020-01-03 | 2022-07-22 | 华为技术有限公司 | Method and device for determining evaluation duration of downlink transmission quality detection |
| CN114788334B (en) * | 2020-01-03 | 2024-10-11 | 华为技术有限公司 | Method and device for determining evaluation duration of downlink transmission quality detection |
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