CN108988996B - Data sending and receiving processing method and device for physical downlink control channel - Google Patents

Data sending and receiving processing method and device for physical downlink control channel Download PDF

Info

Publication number
CN108988996B
CN108988996B CN201710414787.XA CN201710414787A CN108988996B CN 108988996 B CN108988996 B CN 108988996B CN 201710414787 A CN201710414787 A CN 201710414787A CN 108988996 B CN108988996 B CN 108988996B
Authority
CN
China
Prior art keywords
data
pdcch
frame duration
frame
pdsch
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201710414787.XA
Other languages
Chinese (zh)
Other versions
CN108988996A (en
Inventor
徐宏
冯世英
卫琳
冯绍鹏
池连刚
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Potevio Information Technology Co Ltd
Original Assignee
Potevio Information Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Potevio Information Technology Co Ltd filed Critical Potevio Information Technology Co Ltd
Priority to CN201710414787.XA priority Critical patent/CN108988996B/en
Publication of CN108988996A publication Critical patent/CN108988996A/en
Application granted granted Critical
Publication of CN108988996B publication Critical patent/CN108988996B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1806—Go-back-N protocols

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The embodiment of the invention discloses a method and a device for processing data sending and receiving of a physical downlink control channel, wherein the method comprises the following steps: acquiring a data transmission period of a Physical Downlink Control Channel (PDCCH) and the repetition times of the PDCCH, and calculating to obtain a first frame duration of the PDCCH according to the repetition times; calculating to obtain a second frame time length of the Physical Downlink Shared Channel (PDSCH) according to the first frame time length and the data sending period; and sending the target PDCCH data of the first frame duration, the target PDSCH data of the second frame duration, the data sending period and the repetition times to a terminal. The embodiment of the invention calculates and distinguishes the PDCCH data and the PDSCH data in the data frame by canceling the PCFICH and the PHICH in the downlink channel of the base station and setting the data transmission period and the repetition times of the PDCCH, thereby increasing the actual data bit in the downlink channel of the base station and improving the utilization rate of the downlink channel of the base station.

Description

Data sending and receiving processing method and device for physical downlink control channel
Technical Field
The embodiment of the invention relates to the technical field of communication, in particular to a method and a device for processing data sending and receiving of a physical downlink control channel.
Background
With the rapid development of wireless communication technology, the support of wireless communication system to power service and its own industrialization degree have been greatly improved, and more power communication services can be considered to be carried by using wireless communication technology.
At present, the main feasible technical schemes of wireless broadband transmission of electric power are as follows: TD-LTE230 and TD-LTE 1800. The TD-LTE230 is a wireless communication system which is innovatively developed and developed based on TD-LTE (time Division Long term) technology, by combining advanced technologies such as spectrum sensing, carrier aggregation, interference demodulation, software radio and the like, and using discrete spectrum resources in 230MHz frequency band in the power industry. The service types supported by LTE230 include voice service, video service, load control service, data collection service, and network distribution automation service. The method is deeply customized according to the communication requirements of the power service, optimizes a public network TD-LTE technical system, a communication protocol and a networking structure, and improves the capacity of the terminal and the real-time performance of the service.
The existing LTE230 cell edge UE has low demodulation performance and cannot perform same-frequency networking, so as shown in fig. 1, a Downlink Channel uses a PCFICH (Physical Control Format Indicator Channel) to indicate whether a Downlink part of a radio frame is a PDSCH (Physical Downlink Shared Channel) or a PDCCH (Physical Downlink Control Channel); meanwhile, in order to receive feedback of uplink transmission, a PHICH (Physical Hybrid ARQ Indicator Channel) is used for automatic retransmission indication.
In the process of implementing the embodiment of the invention, the inventor finds that the PCFICH in the downlink channel of the existing base station occupies 2 downlink symbols to indicate whether the downlink part of a radio frame is a PDSCH or a PDCCH, and the PHICH with 2 symbols is adopted to perform automatic retransmission indication, thereby causing the waste of the downlink channel of the base station.
Disclosure of Invention
Because the existing method has the above problem, the embodiments of the present invention provide a method and an apparatus for processing data transmission and reception of a physical downlink control channel.
In a first aspect, an embodiment of the present invention provides a method for sending and processing data of a physical downlink control channel, where the method includes:
acquiring a data transmission period of a Physical Downlink Control Channel (PDCCH) and the repetition times of the PDCCH, and calculating to obtain a first frame duration of the PDCCH according to the repetition times;
calculating to obtain a second frame time length of the Physical Downlink Shared Channel (PDSCH) according to the first frame time length and the data sending period;
and sending the target PDCCH data of the first frame duration, the target PDSCH data of the second frame duration, the data sending period and the repetition times to a terminal.
Optionally, the acquiring a data transmission period of the physical downlink control channel PDCCH specifically includes:
and calculating the data transmission period of the PDCCH according to the maximum repetition times and the period factor of the PDCCH.
Optionally, the method further comprises:
and acquiring an initial position offset parameter of the PDCCH, and sending the initial position offset parameter to the terminal.
In a second aspect, an embodiment of the present invention provides a data receiving and processing method, including:
receiving a data frame, a data transmission period and repetition times sent by a base station;
determining a first frame duration of a Physical Downlink Control Channel (PDCCH) according to the repetition times;
calculating to obtain a second frame time length of the Physical Downlink Shared Channel (PDSCH) according to the first frame time length and the data sending period;
and analyzing the data frame according to the first frame duration and the second frame duration to obtain target PDCCH data and target PDSCH data.
Optionally, before analyzing the data frame according to the first frame duration and the second frame duration to obtain the target PDCCH data and the target PDSCH data, the method further includes:
receiving a starting position offset parameter of the PDCCH sent by the base station;
correspondingly, the analyzing the data frame according to the first frame duration and the second frame duration to obtain target PDCCH data and target PDSCH data specifically includes:
and analyzing the data frame according to the initial position offset parameter, the first frame duration and the second frame duration to obtain target PDCCH data and target PDSCH data.
In a third aspect, an embodiment of the present invention further provides a data sending and processing apparatus for a physical downlink control channel, including:
the device comprises a first frame duration calculation module, a first frame duration calculation module and a second frame duration calculation module, wherein the first frame duration calculation module is used for acquiring a data transmission period of a Physical Downlink Control Channel (PDCCH) and the repetition times of the PDCCH, and calculating to obtain the first frame duration of the PDCCH according to the repetition times;
a second frame duration calculation module, configured to calculate a second frame duration of the PDSCH according to the first frame duration and the data transmission period;
and the data sending module is used for sending the target PDCCH data of the first frame duration, the target PDSCH data of the second frame duration, the data sending period and the repetition times to a terminal.
Optionally, the first frame duration calculation module is specifically configured to calculate a data transmission period of the PDCCH according to the maximum repetition number and the period factor of the PDCCH.
Optionally, the apparatus further comprises:
and the offset parameter sending module is used for acquiring the initial position offset parameter of the PDCCH and sending the initial position offset parameter to the terminal.
In a fourth aspect, an embodiment of the present invention further provides a data receiving and processing apparatus, including:
the data receiving module is used for receiving data frames, data sending periods and repetition times sent by the base station;
a first frame duration determining module, configured to determine a first frame duration of a physical downlink control channel PDCCH according to the repetition times;
a second frame duration determining module, configured to calculate a second frame duration of the PDSCH according to the first frame duration and the data sending period;
and the data frame analysis module is used for analyzing the data frame according to the first frame duration and the second frame duration to obtain target PDCCH data and target PDSCH data.
Optionally, the apparatus further comprises:
an offset parameter receiving module, configured to receive an initial position offset parameter of the PDCCH sent by the base station;
correspondingly, the data frame parsing module is specifically configured to parse the data frame according to the initial position offset parameter, the first frame duration, and the second frame duration, so as to obtain target PDCCH data and target PDSCH data.
According to the technical scheme, the PCFICH and the PHICH in the downlink channel of the base station are cancelled, the PDCCH data and the PDSCH data in the data frame are calculated and distinguished by setting the data transmission period and the repetition times of the PDCCH, the actual data bits in the downlink channel of the base station are increased, and the utilization rate of the downlink channel of the base station is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an occupation situation of each channel in a downlink channel of a base station provided in the prior art;
fig. 2 is a flowchart illustrating a data transmission processing method for a physical downlink control channel according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a single subband frame structure provided in the prior art;
fig. 4 is a schematic diagram illustrating the number of repetitions of a PDCCH and the transmission of PDCCH dci data according to an embodiment of the present invention;
fig. 5 is a flowchart illustrating a data receiving and processing method according to another embodiment of the present invention;
FIG. 6 is a schematic diagram of a CSS-RA search cycle according to an embodiment of the present invention;
FIG. 7 is a search cycle diagram of a UE0-USS according to an embodiment of the present invention;
fig. 8 is a distribution diagram of a sub-band PDCCH search space according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of a data transmission processing apparatus for a physical downlink control channel according to an embodiment of the present invention;
fig. 10 is a schematic structural diagram of a data receiving and processing apparatus according to another embodiment of the present invention;
FIG. 11 is a logical block diagram of a first electronic device provided in accordance with one embodiment of the present invention;
fig. 12 is a logic block diagram of a second electronic device according to another embodiment of the invention.
Detailed Description
The following further describes embodiments of the present invention with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
Fig. 2 shows a flowchart of a data transmission processing method of a physical downlink control channel according to this embodiment, where the method includes:
s201, acquiring a data transmission period of a Physical Downlink Control Channel (PDCCH) and the repetition times of the PDCCH, and calculating to obtain a first frame duration of the PDCCH according to the repetition times.
The PDCCH (physical downlink control channel) is a channel indicating a transmission format, resource allocation, repetition number information, and the like related to the PDSCH (physical downlink shared channel) or the PUSCH (physical uplink shared channel).
The PDSCH (physical downlink shared channel) and PUSCH (physical uplink shared channel) are channels for transmitting data blocks.
The data transmission period is a period in which a downlink channel of the base station is used for transmitting PDCCH data or PDSCH data. When a base station sends data to the same terminal, the data sending period is generally unchanged, and in each period, a part of PDCCH data is sent fixedly, and the other part of PDCCH data is PDSCH data; when the base station sends data to different terminals, the data sending periods may be different.
The repetition times are the times of repeated transmission of the PDCCH data in the transmission process, and the data blocks received each time are combined into complete data. For example, if the number of repetitions of PDCCH data is 4, the PDCCH data needs to be divided into 4 data blocks and transmitted in 4 times.
The first frame duration is a frame duration used for representing PDCCH data in one data transmission period.
S202, calculating to obtain a second frame time length of the PDSCH according to the first frame time length and the data sending period.
Wherein the second frame duration is a frame duration used for representing PDSCH data in one data transmission period.
Specifically, the sum of the first frame duration and the second frame duration is a data transmission period.
S203, sending the target PDCCH data of the first frame duration, the target PDSCH data of the second frame duration, the data sending period and the repetition times to a terminal.
Specifically, the data transmission cycle and the number of repetitions of each terminal may be different or the same. For example, parameters such as the number of repetitions and the data transmission period may be set differently for each UE (terminal). These parameters are configured by RRC connection reconfiguration messages and may be changed during the service duration. The sending period and the repetition times of the same terminal in the data transmission process can be different or the same. If the sending period and the repetition times of the same terminal are kept unchanged, the data can not be sent in the process of sending the data to the terminal; and in the process of receiving the data, if the transmission cycle and the repetition times are not received, the terminal uses the previously received transmission cycle and the repetition times.
For example, a prior art single subband frame structure is shown in fig. 3: the number of the power authorization frequency points is 40, the power authorization frequency points are distributed in a discrete and unequal interval mode, the frequency points with the low frequency band of 15 are called a first cluster, the frequency points with the middle frequency band of 10 are called a second cluster, and the frequency points with the high frequency band of 15 are called a third cluster. And selecting a middle frequency point as a synchronous sub-band in each cluster, wherein the downlink resource is used for sending broadcast signals and performing cell search and synchronization, and the corresponding uplink resource is used for performing random access. The rest 37 frequency points are used as service sub-bands, every 40 wireless frames are a period, one frame is used as a synchronous frame, all service sub-bands send PN sequences for maintaining downlink synchronization, and the rest 39 wireless frames are used for transmitting service data (PCFICH and PHICH data).
The downlink resource is 13 symbols, which are 9 symbols of the subframe 0 and the first 4 symbols of the subframe 1. The uplink resource is the last 4 symbols of subframe 1 and subframe 2, subframe 3, and subframe 4.
The channels on the service sub-band are: a downlink channel PCFICH, PHICH, PDCCH and PDSCH; uplink channel SR, PUCCH, PUSCH. The PCFICH occupies the first two symbols of subframe 0; PHICH occupies the 3 rd and 4 th symbols of subframe 0, as shown in fig. 1; the remaining resources are used to transmit PDCCH or PDSCH, indicated by PCFICH. SR occupies the last 4 symbols of subframe 1; the PUCCH occupies the first 4 symbols of subframe 2; PUSCH occupies the last 5 symbols of subframe 2 and subframes 3 and 4.
The PCFICH channel is used for indicating whether the downlink part of the radio frame is a PDSCH or a PDCCH in a common subframe, and indicating whether the downlink part is SI authorization or DRX in a DRX frame; feeding back ACK and NACK of HARQ in a PHICH channel uplink transmission mode; the PDSCH channel is used for data transmission and is indicated through PCFICH; the PDCCH channel is used for DCI transmission and is indicated by PCFICH.
In this embodiment, the PCFICH and the PHICH are cancelled, the downlink symbols of the traffic channel are effectively used, the same data frame processing rule is used at the base station and the terminal, and the demodulation performance of each channel can be increased to support the same-frequency networking.
In the embodiment, the PCFICH channel and the PHICH channel in the downlink channel of the base station are cancelled, and the PDCCH data and the PDSCH data in the data frame are calculated and distinguished by setting the data transmission period and the repetition times of the PDCCH, so that the actual data bits in the downlink channel of the base station are increased, and the utilization rate of the downlink channel of the base station is improved.
Further, on the basis of the above method embodiment, the acquiring a data transmission period of the physical downlink control channel PDCCH in S201 specifically includes:
and calculating the data transmission period of the PDCCH according to the maximum repetition times and the period factor of the PDCCH.
Wherein the maximum repetition frequency of the PDCCH is the maximum repetition frequency of the PDCCH, and is represented by PDCCH-NumRepetitions, and a frame (25ms) is taken as a unit; take on values of {1,2,4,8,16,32,64,128,256,512,1024,2048 }.
The period factor is the ratio of the PDCCH period to the maximum repetition time and is expressed by PDCCH-StartF. The data transmission period of the PDCCH is the product of PDCCH-NumRepetitions and PDCCH-StartF; the value is {2,4,8,16,32,48,64 }.
The search spaces of the PDCCH comprise three types, namely a public search space-RA, a public search space-Paging and a UE-dedicated search space. The values of the three parameters in different spaces are different; wherein:
the common search space-RA (CSS-RA) includes PDCCH-NumRepetitions-RA (obtained by PDCCH-NumRepetitions factor-RA × prach-NumRepetitions) and PDCCH-StartF-RA.
The common search space-Paging (CSS-Paging) includes PDCCH-NumRepetitions-Paging and Paging-Periodicity.
The UE-specific search space (USS) includes PDCCH-NumRepetitions-USS, PDCCH-StartF-USS, and PDCCH-Offset-USS.
The UE (terminal) does not need to listen to the USS and the CSS simultaneously, nor to the CSS-RA and CSS-Paging simultaneously.
And calculating a data transmission period T of the PDCCH, namely PDCCH-NumRepetitions multiplied by PDCCH-StartF.
Further, on the basis of the above embodiment of the method, the method further comprises:
s204, obtaining the initial position offset parameter of the PDCCH, and sending the initial position offset parameter to the terminal.
The initial position Offset parameter is the Offset of the initial position of the PDCCH data in a data sending period and is represented by PDCCH-Offset; the value is {0,1/8,1/4,3/8 }.
For example, in one data transmission period, from the data bit of the initial position offset parameter, the data of the first frame duration is the target PDCCH data, and the data of the subsequent second frame duration is the target PDSCH data.
Calculating a starting position offset parameter of the PDCCH search space: nf mod T — PDCCH-Offset × T, where Nf is the radio frame number (SFN).
When the PDCCH repetition times are 1,2,4,8, the PDCCH DCI is sent in frames as shown in fig. 4; when the PDCCH repetition number is 16 or more, the PDCCH DCI is divided into 8 frames, and the transmission is repeated with 8 frames as one Cycle, as shown in fig. 4.
Fig. 5 shows a flow chart of a data receiving processing method provided in this embodiment, including:
s501, receiving a data frame, a data transmission period and repetition times sent by a base station.
The data frame is a frame which is sent by a base station and comprises PDCCH data and PDSCH data.
The data transmission period is a period in which a downlink channel of the base station is used for transmitting PDCCH data or PDSCH data. When a base station sends data to the same terminal, the data sending period is generally unchanged, and in each period, a part of PDCCH data is sent fixedly, and the other part of PDCCH data is PDSCH data; when a base station transmits data to different terminals, the data transmission periods are generally different.
The repetition times are the times of repeated transmission of the PDCCH data or the PDSCH data in the transmission process, and the data blocks received each time are combined into complete data. For example, if the number of repetitions of PDCCH data is 4, the PDCCH data needs to be divided into 4 data blocks and transmitted in 4 times.
S502, determining the first frame duration of the physical downlink control channel PDCCH according to the repetition times.
The first frame duration is a frame duration used for representing PDCCH data in one data transmission period.
Specifically, the first frame duration of the PDCCH is obtained by multiplying the preset frame length of each time by the repetition number.
S503, calculating to obtain a second frame time length of the PDSCH according to the first frame time length and the data sending period.
Wherein the second frame duration is a frame duration used for representing PDSCH data in one data transmission period.
Specifically, the subtraction of the first frame duration from the data transmission period is the second frame duration.
S504, analyzing the data frame according to the first frame duration and the second frame duration to obtain target PDCCH data and target PDSCH data.
Specifically, in one data transmission period, the first half of the first frame duration is target PDCCH data, and the second half of the second frame duration is target PDSCH data.
For the UE (terminal) to save power, the UE needs to be in DRX state and monitors paging messages according to a paging cycle. Because even if the PDCCH periodic search of the UE is configured, each UE is different, and there are long periods (edge users) and short periods (center users), and if monitoring is performed according to the PDCCH period, the short periods are relatively power-consuming.
CSS-Paging design can be referred to CSS-RA. The start position is Nf mod T ═ 0. Parameters of the CSS-Paging search space are configured in a broadcast channel, and the Paging period is configured in a broadcast message and has a value range of {16,32,64}, namely 400ms, 800ms and 1600 ms.
The parameters of the CSS-RA search space are obtained by multiplying the pdcch-numrepottionsfactor in the broadcast information by the PRACH-numrepottions in each PRACH configuration as cell level parameters.
According to different RSRPs calculated by UE, the parameter configuration of CSS-RA has at most three kinds, corresponding to the configuration of PRACH; the PDCCH-StartF-RA value is set according to the length of an RRC message during random access, can be configured by a network manager, is sent in a PBCH MIB, and takes {2,4,8}, and defaults to 2.
Assuming that the PDCCH-NumRepetitions-RA takes a value of {8,16,32} corresponding to 200ms, 400ms, and 800ms according to different coverage levels, and the PDCCH-StartF-RA takes a value of 2, the period of the CSS-RA is: TRA 16/32/64(400ms/800ms/1600ms), start search position: nf mod T is 0.
A schematic diagram of a CSS-RA search period for a first coverage class (TRA of 16) is shown in fig. 6, where the diagonal bits are PDCCH data and the blank bits are PDSCH data.
The parameters of the USS are configured to the UE in the RRC connection reconfiguration message. The configuration of the initial value of the USS is configured as follows: the UE transmits according to the repetition times indicated by the random access response RAR when transmitting the Msg3, the transmission times of the Msg4 can be configured according to the repetition times configured by the Msg3, and the transmission times can be always configured according to the repetition times configured by the Msg3 in the subsequent access process. The value of PDCCH-StartF-USS may be set according to the service characteristics of the UE and the location of the UE (the number of times of service channel repetition of edge UE is large), so as to calculate how many frames in one PDCCH period may transmit service data.
It should be noted that the number of repetitions of the PDCCH, the data transmission period, and the initial position offset parameter of each terminal at the base station side are adjusted according to the measurement report of each terminal.
In the embodiment, the PCFICH channel and the PHICH channel in the downlink channel of the base station are cancelled, and the PDCCH data and the PDSCH data in the data frame are calculated and distinguished by setting the data transmission period and the repetition frequency of the PDCCH, so that the actual data bits in the downlink channel of the base station are increased, the utilization rate of the downlink channel of the base station is improved, and the efficiency of the terminal for receiving the data frame is improved.
Further, on the basis of the above embodiment of the method, the method further comprises:
s5034, receiving the starting position offset parameter of the PDCCH sent by the base station.
Correspondingly, S504 specifically includes:
and analyzing the data frame according to the initial position offset parameter, the first frame duration and the second frame duration to obtain target PDCCH data and target PDSCH data.
The initial position Offset parameter is the Offset of the initial position of the PDCCH data in a data sending period and is represented by PDCCH-Offset; the value is {0,1/8,1/4,3/8 }.
For example, in one data transmission period, from the data bit of the initial position offset parameter, the data of the first frame duration is the target PDCCH data, and the data of the subsequent second frame duration is the target PDSCH data.
The search period and starting position are calculated by the following specific example:
the PDCCH-NumRepetitions-USS configured by the UE0 is 8 (more marginal), the PDCCH-StartF-USS is 2, and the PDCCH-Offset-USS is 0; then, the data transmission period T is 16, the starting position: nf mod 16 is 0(0 × 16).
The PDCCH-NumRepetitions-USS configured by the UE1 is 8 (more marginal), the PDCCH-StartF-USS is 2, and the PDCCH-Offset-USS is 1/8; then, the data transmission period T is 16, the starting position: nf mod 16 ═ 2(1/8 × 16).
The PDCCH-NumRepetitions-USS configured by the UE2 is 8 (more marginal), the PDCCH-StartF-USS is 2, and the PDCCH-Offset-USS is 1/4; then, the data transmission period T is 16, the starting position: nf mod 16 — 4(1/4 × 16).
The PDCCH-NumRepetitions-USS configured by the UE3 is 4, the PDCCH-StartF-USS is 4, and the PDCCH-Offset-USS is 1/8; then, the data transmission period T is 16, the starting position: nf mod 16 ═ 2(1/8 × 16).
The PDCCH-NumRepetitions-USS configured by the UE4 is 4, the PDCCH-StartF-USS is 4, and the PDCCH-Offset-USS is 1/4; then, the data transmission period T is 16, the starting position: nf mod 16 — 4(1/4 × 16).
Specifically, as shown in fig. 7, the diagonal bits are PDCCH data, and the blank bits are PDSCH data.
When the data transmission periods of the terminals are different, correspondingly, the data frame format in the downlink channel of the base station side is as shown in fig. 8, where the data transmission period of the UE0 is 8, the data transmission period of the UE1 is 8, the data transmission period of the UE2 is 4, the data transmission period of the UE3 is 8, and the data transmission period of the UE4 is 4. The diagonal bits are PDCCH data and the blank bits are PDSCH data.
Fig. 9 is a schematic structural diagram of a data transmission processing apparatus of a physical downlink control channel according to this embodiment, where the apparatus includes: a first frame duration calculation module 901, a second frame duration calculation module 902, and a data transmission module 903, where:
the first frame duration calculation module 901 is configured to obtain a data transmission period of a physical downlink control channel PDCCH and a repetition number of the PDCCH, and calculate a first frame duration of the PDCCH according to the repetition number;
the second frame duration calculation module 902 is configured to calculate a second frame duration of the PDSCH according to the first frame duration and the data transmission period;
the data sending module 903 is configured to send the target PDCCH data of the first frame duration, the target PDSCH data of the second frame duration, the data sending period, and the repetition number to the terminal.
Specifically, the first frame duration calculation module 901 obtains a data transmission period of a physical downlink control channel PDCCH, and calculates a first frame duration of the PDCCH according to the repetition times of the PDCCH; the second frame duration calculation module 902 calculates a second frame duration of the PDSCH according to the first frame duration and the data transmission period; the data sending module 903 sends the target PDCCH data of the first frame duration, the target PDSCH data of the second frame duration, the data sending period, and the repetition number to the terminal.
In the embodiment, the PCFICH channel and the PHICH channel in the downlink channel of the base station are cancelled, and the PDCCH data and the PDSCH data in the data frame are calculated and distinguished by setting the data transmission period and the repetition times of the PDCCH, so that the actual data bits in the downlink channel of the base station are increased, and the utilization rate of the downlink channel of the base station is improved.
Further, on the basis of the above apparatus embodiment, the first frame duration calculation module 901 is specifically configured to calculate a data transmission period of the PDCCH according to the maximum repetition number and the period factor of the PDCCH.
Further, on the basis of the above embodiment of the apparatus, the apparatus further comprises:
and the offset parameter sending module is used for acquiring the initial position offset parameter of the PDCCH and sending the initial position offset parameter to the terminal.
The data sending and processing apparatus of the physical downlink control channel described in this embodiment may be configured to execute the corresponding method embodiment, and the principle and the technical effect are similar, which are not described herein again.
Fig. 10 shows a schematic structural diagram of a data receiving and processing device provided in this embodiment, where the device includes: a data receiving module 1001, a first frame duration determining module 1002, a second frame duration determining module 1003 and a data frame parsing module 1004, wherein:
the data receiving module 1001 is configured to receive a data frame, a data sending period, and a repetition number sent by a base station;
the first frame duration determining module 1002 is configured to determine a first frame duration of a physical downlink control channel PDCCH according to the repetition times;
the second frame duration determining module 1003 is configured to calculate a second frame duration of the PDSCH according to the first frame duration and the data transmission period;
the data frame analyzing module 1004 is configured to analyze the data frame according to the first frame duration and the second frame duration to obtain target PDCCH data and target PDSCH data.
Specifically, the data receiving module 1001 receives a data frame, a data transmission period, and a repetition number sent by a base station; the first frame duration determining module 1002 determines a first frame duration of a physical downlink control channel PDCCH according to the repetition times; the second frame duration determining module 1003 calculates a second frame duration of the PDSCH according to the first frame duration and the data transmission period; the data frame analyzing module 1004 analyzes the data frame according to the first frame duration and the second frame duration to obtain target PDCCH data and target PDSCH data.
In the embodiment, the PCFICH channel and the PHICH channel in the downlink channel of the base station are cancelled, and the PDCCH data and the PDSCH data in the data frame are calculated and distinguished by setting the data transmission period and the repetition frequency of the PDCCH, so that the actual data bits in the downlink channel of the base station are increased, the utilization rate of the downlink channel of the base station is improved, and the efficiency of the terminal for receiving the data frame is improved.
Further, on the basis of the above embodiment of the apparatus, the apparatus further comprises:
an offset parameter receiving module, configured to receive an initial position offset parameter of the PDCCH sent by the base station;
correspondingly, the data frame parsing module 1004 is specifically configured to parse the data frame according to the initial position offset parameter, the first frame duration, and the second frame duration, so as to obtain target PDCCH data and target PDSCH data.
The data receiving and processing apparatus described in this embodiment may be configured to execute the corresponding method embodiment, and the principle and technical effect are similar, which are not described herein again.
Referring to fig. 11, the first electronic device includes: a processor (processor)1101, a memory (memory)1102, and a bus 1103;
wherein,
the processor 1101 and the memory 1102 communicate with each other via the bus 1103;
the processor 1101 is configured to call the program instructions in the memory 1102 to perform the methods provided by the above-mentioned method embodiments, for example, including:
acquiring a data transmission period of a Physical Downlink Control Channel (PDCCH), and calculating to obtain a first frame duration of the PDCCH according to the repetition times of the PDCCH;
calculating to obtain a second frame time length of the Physical Downlink Shared Channel (PDSCH) according to the first frame time length and the data sending period;
and sending the target PDCCH data of the first frame duration, the target PDSCH data of the second frame duration, the data sending period and the repetition times to a terminal.
The present embodiments provide a non-transitory computer-readable storage medium storing computer instructions that cause the computer to perform the methods provided by the above method embodiments, for example, including:
acquiring a data transmission period of a Physical Downlink Control Channel (PDCCH), and calculating to obtain a first frame duration of the PDCCH according to the repetition times of the PDCCH;
calculating to obtain a second frame time length of the Physical Downlink Shared Channel (PDSCH) according to the first frame time length and the data sending period;
and sending the target PDCCH data of the first frame duration, the target PDSCH data of the second frame duration, the data sending period and the repetition times to a terminal.
Referring to fig. 12, the second electronic device includes: a processor (processor)1201, a memory (memory)1202, and a bus 1203;
wherein,
the processor 1201 and the memory 1202 communicate with each other via the bus 1203;
the processor 1201 is configured to call program instructions in the memory 1202 to perform the methods provided by the above-mentioned method embodiments, including:
receiving a data frame, a data transmission period and repetition times sent by a base station;
determining a first frame duration of a Physical Downlink Control Channel (PDCCH) according to the repetition times;
calculating to obtain a second frame time length of the Physical Downlink Shared Channel (PDSCH) according to the first frame time length and the data sending period;
and analyzing the data frame according to the first frame duration and the second frame duration to obtain target PDCCH data and target PDSCH data.
The present embodiments provide a non-transitory computer-readable storage medium storing computer instructions that cause the computer to perform the methods provided by the above method embodiments, for example, including:
receiving a data frame, a data transmission period and repetition times sent by a base station;
determining a first frame duration of a Physical Downlink Control Channel (PDCCH) according to the repetition times;
calculating to obtain a second frame time length of the Physical Downlink Shared Channel (PDSCH) according to the first frame time length and the data sending period;
and analyzing the data frame according to the first frame duration and the second frame duration to obtain target PDCCH data and target PDSCH data.
Those of ordinary skill in the art will understand that: all or part of the steps for implementing the method embodiments may be implemented by hardware related to program instructions, and the program may be stored in a computer readable storage medium, and when executed, the program performs the steps including the method embodiments; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
It should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (10)

1. A data transmission processing method of a physical downlink control channel is characterized by comprising the following steps:
acquiring a data transmission period of a Physical Downlink Control Channel (PDCCH) and the repetition times of the PDCCH, and calculating to obtain a first frame duration of the PDCCH according to the repetition times;
the first frame duration of the PDCCH is the frame duration used for representing PDCCH data in a data transmission period;
the repetition times are the times of repeated transmission of the PDCCH data in the transmission process, and the data blocks received each time are combined into complete data;
calculating to obtain a second frame time length of the Physical Downlink Shared Channel (PDSCH) according to the first frame time length and the data sending period;
the second frame duration of the PDSCH is the frame duration used for representing PDSCH data in one data transmission period;
wherein, according to the first frame duration and the data transmission period, the step of calculating to obtain the second frame duration of the PDSCH is specifically as follows:
subtracting the first frame duration from the data transmission period to obtain a second frame duration of the Physical Downlink Shared Channel (PDSCH);
and sending the target PDCCH data of the first frame duration, the target PDSCH data of the second frame duration, the data sending period and the repetition times to a terminal.
2. The method according to claim 1, wherein the acquiring a data transmission period of a physical downlink control channel PDCCH specifically includes:
and calculating the data transmission period of the PDCCH according to the maximum repetition times and the period factor of the PDCCH.
3. The method of claim 1, further comprising:
and acquiring an initial position offset parameter of the PDCCH, and sending the initial position offset parameter to the terminal.
4. A data receiving processing method, comprising:
receiving a data frame, a data transmission period and repetition times sent by a base station;
determining a first frame duration of a Physical Downlink Control Channel (PDCCH) according to the repetition times;
the first frame duration of the PDCCH is the frame duration used for representing PDCCH data in a data transmission period;
the repetition times are the times of repeated transmission of the PDCCH data in the transmission process, and the data blocks received each time are combined into complete data;
calculating to obtain a second frame time length of the Physical Downlink Shared Channel (PDSCH) according to the first frame time length and the data sending period;
the second frame duration of the PDSCH is the frame duration used for representing PDSCH data in one data transmission period;
wherein, according to the first frame duration and the data transmission period, the step of calculating to obtain the second frame duration of the PDSCH is specifically as follows:
subtracting the first frame duration from the data transmission period to obtain a second frame duration of the Physical Downlink Shared Channel (PDSCH);
and analyzing the data frame according to the first frame duration and the second frame duration to obtain target PDCCH data and target PDSCH data.
5. The method of claim 4, wherein before parsing the data frame according to the first frame duration and the second frame duration to obtain the target PDCCH data and the target PDSCH data, the method further comprises:
receiving a starting position offset parameter of the PDCCH sent by the base station;
correspondingly, the analyzing the data frame according to the first frame duration and the second frame duration to obtain target PDCCH data and target PDSCH data specifically includes:
and analyzing the data frame according to the initial position offset parameter, the first frame duration and the second frame duration to obtain target PDCCH data and target PDSCH data.
6. A data transmission processing apparatus for a physical downlink control channel, comprising:
the device comprises a first frame duration calculation module, a first frame duration calculation module and a second frame duration calculation module, wherein the first frame duration calculation module is used for acquiring a data transmission period of a Physical Downlink Control Channel (PDCCH) and the repetition times of the PDCCH, and calculating to obtain the first frame duration of the PDCCH according to the repetition times;
the first frame duration of the PDCCH is the frame duration used for representing PDCCH data in a data transmission period;
the repetition times are the times of repeated transmission of the PDCCH data in the transmission process, and the data blocks received each time are combined into complete data;
a second frame duration calculation module, configured to calculate a second frame duration of the PDSCH according to the first frame duration and the data transmission period;
the second frame duration of the PDSCH is the frame duration used for representing PDSCH data in one data transmission period;
the second frame duration calculation module is specifically configured to:
subtracting the first frame duration from the data transmission period to obtain a second frame duration of the Physical Downlink Shared Channel (PDSCH);
and the data sending module is used for sending the target PDCCH data of the first frame duration, the target PDSCH data of the second frame duration, the data sending period and the repetition times to a terminal.
7. The apparatus of claim 6, wherein the first frame duration calculation module is specifically configured to calculate a data transmission period of the PDCCH according to a maximum repetition number and a period factor of the PDCCH.
8. The apparatus of claim 6, further comprising:
and the offset parameter sending module is used for acquiring the initial position offset parameter of the PDCCH and sending the initial position offset parameter to the terminal.
9. A data reception processing apparatus, comprising:
the data receiving module is used for receiving data frames, data sending periods and repetition times sent by the base station;
a first frame duration determining module, configured to determine a first frame duration of a physical downlink control channel PDCCH according to the repetition times;
the first frame duration of the PDCCH is the frame duration used for representing PDCCH data in a data transmission period;
the repetition times are the times of repeated transmission of the PDCCH data in the transmission process, and the data blocks received each time are combined into complete data;
a second frame duration determining module, configured to calculate a second frame duration of the PDSCH according to the first frame duration and the data sending period;
the second frame duration of the PDSCH is the frame duration used for representing PDSCH data in one data transmission period;
the second frame duration determining module is specifically configured to:
subtracting the first frame duration from the data transmission period to obtain a second frame duration of the Physical Downlink Shared Channel (PDSCH);
and the data frame analysis module is used for analyzing the data frame according to the first frame duration and the second frame duration to obtain target PDCCH data and target PDSCH data.
10. The apparatus of claim 9, further comprising:
an offset parameter receiving module, configured to receive an initial position offset parameter of the PDCCH sent by the base station;
correspondingly, the data frame parsing module is specifically configured to parse the data frame according to the initial position offset parameter, the first frame duration, and the second frame duration, so as to obtain target PDCCH data and target PDSCH data.
CN201710414787.XA 2017-06-05 2017-06-05 Data sending and receiving processing method and device for physical downlink control channel Expired - Fee Related CN108988996B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710414787.XA CN108988996B (en) 2017-06-05 2017-06-05 Data sending and receiving processing method and device for physical downlink control channel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710414787.XA CN108988996B (en) 2017-06-05 2017-06-05 Data sending and receiving processing method and device for physical downlink control channel

Publications (2)

Publication Number Publication Date
CN108988996A CN108988996A (en) 2018-12-11
CN108988996B true CN108988996B (en) 2021-03-05

Family

ID=64501841

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710414787.XA Expired - Fee Related CN108988996B (en) 2017-06-05 2017-06-05 Data sending and receiving processing method and device for physical downlink control channel

Country Status (1)

Country Link
CN (1) CN108988996B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020164095A1 (en) * 2019-02-15 2020-08-20 Qualcomm Incorporated Methods and apparatuses for low bandwidth wireless communications
CN111867074B (en) * 2019-04-30 2023-04-18 华为技术有限公司 Method for receiving data and transmitting data, and communication device
CN112448799A (en) * 2019-08-30 2021-03-05 普天信息技术有限公司 Method and device for transmitting downlink shared channel information
CN114124315B (en) * 2020-08-28 2024-02-02 大唐移动通信设备有限公司 Information feedback method, information receiving method, terminal and network equipment

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101873528A (en) * 2009-04-21 2010-10-27 大唐移动通信设备有限公司 Sending method and equipment as well as receiving method and equipment of multicast control channel
WO2013009098A2 (en) * 2011-07-11 2013-01-17 주식회사 팬택 Method for transmitting a downlink control channel by a transmitting end, the transmitting end, method for receiving a downlink control channel by a terminal, and the terminal
CN104079392A (en) * 2013-03-29 2014-10-01 中兴通讯股份有限公司 Method, device and system for transmitting system frame number information
CN104349458A (en) * 2013-08-08 2015-02-11 中兴通讯股份有限公司 Control channel transmission method, transmission processing method, communication node and terminal
CN104780549A (en) * 2014-01-10 2015-07-15 夏普株式会社 Physical channel configuration method, base station and user equipment
CN104811409A (en) * 2014-01-26 2015-07-29 夏普株式会社 Method for repeatedly transmitting physical downlink control channels, base station and user equipment
CN104811279A (en) * 2014-01-23 2015-07-29 电信科学技术研究院 Method and device for transmitting paging message
EP3051738A1 (en) * 2015-01-30 2016-08-03 Alcatel Lucent Method for monitoring a user equipment specific search space, user equipment, a node and a computer program product
CN105981461A (en) * 2014-02-26 2016-09-28 夏普株式会社 Terminal device, integrated circuit, and wireless communication method

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011002243A2 (en) * 2009-07-02 2011-01-06 엘지전자 주식회사 Signal transmitting and receiving method of repeater and repeater using the same

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101873528A (en) * 2009-04-21 2010-10-27 大唐移动通信设备有限公司 Sending method and equipment as well as receiving method and equipment of multicast control channel
WO2013009098A2 (en) * 2011-07-11 2013-01-17 주식회사 팬택 Method for transmitting a downlink control channel by a transmitting end, the transmitting end, method for receiving a downlink control channel by a terminal, and the terminal
CN104079392A (en) * 2013-03-29 2014-10-01 中兴通讯股份有限公司 Method, device and system for transmitting system frame number information
CN104349458A (en) * 2013-08-08 2015-02-11 中兴通讯股份有限公司 Control channel transmission method, transmission processing method, communication node and terminal
CN104780549A (en) * 2014-01-10 2015-07-15 夏普株式会社 Physical channel configuration method, base station and user equipment
CN104811279A (en) * 2014-01-23 2015-07-29 电信科学技术研究院 Method and device for transmitting paging message
CN104811409A (en) * 2014-01-26 2015-07-29 夏普株式会社 Method for repeatedly transmitting physical downlink control channels, base station and user equipment
CN105981461A (en) * 2014-02-26 2016-09-28 夏普株式会社 Terminal device, integrated circuit, and wireless communication method
EP3051738A1 (en) * 2015-01-30 2016-08-03 Alcatel Lucent Method for monitoring a user equipment specific search space, user equipment, a node and a computer program product

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
MCCSupport.Evolved Universal Terrestrial Radio Access (E-UTRA) *
Physical layer procedures.《3GPPTS36.213》.2015, *

Also Published As

Publication number Publication date
CN108988996A (en) 2018-12-11

Similar Documents

Publication Publication Date Title
US20210058911A1 (en) Uplink information sending method and apparatus, downlink information sending method and apparatus, downlink information receiving method and apparatus and system scheduling method and apparatus
JP6936232B2 (en) Random access method and equipment
EP2830378B1 (en) Resource allocation indication method, resource allocation method, and device
EP3096481B1 (en) Signal transmission method and apparatus
CN108811116B (en) Method for transmitting control channel, network equipment, network controller and terminal equipment
EP4391711A2 (en) Method and apparatus for transmitting and receiving a signal in a wireless communication system
US10212573B2 (en) Coverage-deficient terminal connection procedures
US10581578B2 (en) Feedback information transmission method, base station, and user equipment
EP3393167B1 (en) Resource allocation method and device, and base station
CN109756966B (en) Information transmission method, base station and user equipment
CN108988996B (en) Data sending and receiving processing method and device for physical downlink control channel
EP2412199A2 (en) Apparatus and method for interference avoidance in mixed device-to-device and cellular environment
EP3493628B1 (en) Determination of a signal and/or a function of a pucch for transmission by a user equipment
RU2649956C2 (en) Method of information transmission, base station and customer equipment
US10560979B2 (en) Measurement result reporting method, method for counting by timer, apparatus, and user equipment
US20170332247A1 (en) Network device, user equipment, and system information transmission method
EP3579482A1 (en) Information transmission method, apparatus and system
US12058533B2 (en) Method and device for determining occupied slots, storage medium, and user equipment
CN111130721B (en) Data transmission method and device
CN108702691B (en) Method and device for sending communication message
CN107113913A (en) Monitor method, equipment and the base station for authorizing auxiliary access cell
WO2020062105A1 (en) Communication method and apparatus
WO2020093327A1 (en) Method and apparatus for dtx detection for sidelink groupcast transmission
CN111654919A (en) Information transmission method and device
CN108882265B (en) NAICS capability reporting and NAICS parameter configuration method, device, user equipment and base station

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20210305