CN109428701B - Downlink control channel configuration method - Google Patents

Downlink control channel configuration method Download PDF

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CN109428701B
CN109428701B CN201710760510.2A CN201710760510A CN109428701B CN 109428701 B CN109428701 B CN 109428701B CN 201710760510 A CN201710760510 A CN 201710760510A CN 109428701 B CN109428701 B CN 109428701B
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regs
downlink control
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CN109428701A (en
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焦慧颖
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China Academy of Information and Communications Technology CAICT
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China Academy of Information and Communications Technology CAICT
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Priority to CN201710760510.2A priority patent/CN109428701B/en
Priority to CN201910521404.8A priority patent/CN110324134B/en
Priority to CN201910520968.XA priority patent/CN110149195B/en
Priority to PCT/CN2017/117461 priority patent/WO2019041671A1/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT the frequencies being arranged in component carriers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0014—Three-dimensional division
    • H04L5/0023—Time-frequency-space
    • H04L5/0025—Spatial division following the spatial signature of the channel
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0037—Inter-user or inter-terminal allocation
    • H04L5/0039—Frequency-contiguous, i.e. with no allocation of frequencies for one user or terminal between the frequencies allocated to another
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0037—Inter-user or inter-terminal allocation
    • H04L5/0041—Frequency-non-contiguous

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

Abstract

The application provides a downlink control channel configuration method, which is applied to a 5G system, and when the 5G system works in a high frequency band, a downlink control signaling is sent on the 1 st OFDM symbol of a subframe for each user in a mode of configuring and using analog beamforming; when the 5G system works in a low-frequency band, a digital beam forming mode is configured and used for sending downlink control signaling on the first or the first two OFDM symbols of a subframe for each user, and when the size of the frequency domain of the symbols for sending the downlink control signaling is configured, the configured frequency domain supports the size of the frequency domain under the combination of the maximum downlink control information load and the maximum aggregation level and supports the minimum UE bandwidth; configuring a REG for sending a downlink control signaling to be composed of one PRB in a frequency domain and one OFDM symbol in a time domain; each CCE consists of 6 REGs. The technical scheme can meet the requirement of the transmission of the downlink control channel of the 5G system.

Description

Downlink control channel configuration method
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a downlink control channel configuration method.
Background
L TE downlink control channel is used to carry the transmission of downlink control signaling, and the carried physical layer control information includes HARQ acknowledgement information of uplink data transmission, scheduling information of downlink data transmission, uplink power control command information, etc.
The downlink control channel is mainly divided into: a Physical Control Format Indicator Channel (PCFICH), which is mainly used for transmitting a Control format indicator; a Physical Hybrid Automatic Repeat Request Indicator Channel (PHICH) used to transmit the HARQ Indicator; a Physical Downlink Control Channel (PDCCH) is mainly used for transmitting Downlink Control information.
L TE system subcarrier spacing is fixed at 15kHz, frame length is 1ms, and with the introduction of high frequency band and large bandwidth, 5GNR supports various subcarrier spacings, and corresponding frame structure also changes, besides supporting common subframes, also supports the subframe structure of minislot, therefore, the structure of the existing downlink control channel for realizing configuration can not adapt to the application of 5G NR technology.
Disclosure of Invention
In view of this, the present application provides a method for configuring a downlink control channel, which can meet the requirement of downlink control channel transmission in a 5G system.
In order to solve the technical problem, the technical scheme of the application is realized as follows:
a downlink control channel configuration method is applied to a 5G system, and comprises the following steps:
when the 5G system works in a high-frequency band, a downlink control signaling is sent on the 1 st OFDM symbol of a subframe for each user in a mode of configuring and using analog beamforming; when the 5G system works in a low-frequency band, a digital beam forming mode is configured to be used for sending downlink control signaling on the first OFDM symbol or the first two OFDM symbols of a subframe for each user, wherein the downlink control signaling is sent on a plurality of PRBs (physical resource blocks) in a frequency domain when being sent on the first two OFDM symbols of the subframe;
when the size of the frequency domain of the symbol for sending the downlink control signaling is configured, the following conditions are met: the configured frequency domain supports the size of the frequency domain under the combination of the maximum downlink control information load and the maximum aggregation level, and supports the minimum UE bandwidth;
configuring a REG for sending a downlink control signaling to be composed of one PRB in a frequency domain and one OFDM symbol in a time domain; each CCE consists of 6 REGs; wherein, when the REGs are mapped to the CCEs in a non-interleaved manner, 6 REGs in one CCE are consecutive; when REGs are mapped to CCEs in an interleaved manner, 6 REGs in one CCE are divided into 3 REG groups nREGEach n isREGConsists of 2 REGs.
As can be seen from the above technical solutions, the symbol length for sending the downlink control signaling, the size of the frequency domain, the composition of REGs and CCEs, and the mapping manner are configured in the present application, so that the requirement of downlink control channel transmission of the 5G system can be met.
Drawings
Fig. 1 is a schematic diagram illustrating a downlink control channel configuration flow in an embodiment of the present application;
fig. 2 is a schematic distribution diagram of CCEs and REGs when 1 OFDM symbol is mapped in a non-interleaved manner in the embodiment of the present application;
fig. 3 is a schematic distribution diagram of CCEs and REGs when 1 OFDM symbol is mapped in an interleaving manner in the embodiment of the present application;
fig. 4 is a schematic distribution diagram of CCEs and REGs when 2 OFDM symbols are mapped in a non-interleaved manner in the embodiment of the present application;
fig. 5 is a schematic distribution diagram of CCEs and REGs when 2 OFDM symbols are mapped in an interleaving manner in the embodiment of the present application;
fig. 6 is a schematic diagram of different aggregation levels in the embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly apparent, the technical solutions of the present invention are described in detail below with reference to the accompanying drawings and examples.
The embodiment of the present application provides a downlink control channel configuration method, which is applied to a 5G system, and is configured for a length of an Orthogonal Frequency Division Multiplexing (OFDM) symbol for transmitting a downlink control signaling, a size of a frequency domain, a composition of a Resource Element Group (REG) and a Control Channel Element (CCE), and a mapping manner, so that a requirement of downlink control channel transmission of the 5G system can be met.
The following describes in detail a configuration process of a downlink control channel in an embodiment of the present application with reference to the accompanying drawings.
Referring to fig. 1, fig. 1 is a schematic diagram of a configuration flow of a downlink control channel in an embodiment of the present application. The method comprises the following specific steps:
step 101, when a 5G system works in a high frequency band, a base station configures and uses an analog beam forming mode to send a downlink control signaling on the 1 st OFDM symbol of a subframe for each user; when the 5G system works in the low frequency band, it is configured to use a digital beamforming manner to send downlink control signaling on the first OFDM symbol or the first two OFDM symbols of a subframe for each user.
When the downlink control signaling is sent on the first two OFDM symbols of the subframe, the downlink control signaling is sent on a plurality of PRBs in the frequency domain, that is, on a plurality of PRBs across the frequency domain of the OFDM symbols, so that the gain is large when the downlink control signaling is sent on the downlink control channel by using digital beamforming.
102, when the base station configures the size of the frequency domain of the symbol for sending the downlink control signaling, the following conditions are satisfied: the configured frequency domain supports the size of the frequency domain under the combination of the maximum downlink control information load and the maximum aggregation level, and supports the minimum UE bandwidth.
In this step, a condition that is satisfied when a frequency domain of a symbol for transmitting a downlink control signaling is configured is given, and in practical application, when the condition is satisfied, the size of the frequency domain may be configurable, for example, the size may be configured to be between 5MHz and 20 MHz.
103, configuring, by the base station, a REG for sending the downlink control signaling to be composed of one PRB in the frequency domain and one OFDM symbol in the time domain; each CCE consists of 6 REGs; wherein, when the REGs are mapped to the CCEs in a non-interleaved manner, 6 REGs in one CCE are consecutive; when REGs are mapped to a CCE in an interleaved manner, one CCE is divided into 3 REG groups each consisting of 2 REGs.
When REGs are mapped to a CCE in an interleaved manner in this step, one CCE is divided into 3 REG groups, each REG group consisting of 2 REGs. This partitioning can provide higher frequency diversity, and multiple REGs in the same group can result in good channel estimation performance. The following describes in detail the mapping relationship between CCEs and REGs under different numbers of OFDM symbols in different mapping manners with reference to the drawings.
When 1 OFDM symbol is used for sending downlink control signaling, and the REGs are mapped to the CCEs in a non-interleaving mode, the REGs are sequenced in a frequency domain from small to large according to the frequency, and the CCEs are arranged in the frequency domain according to the ascending sequence of the REGs, namely 6 ascending sequences of the REGs form one CCE.
Referring to fig. 2, fig. 2 is a schematic diagram illustrating the distribution of CCEs and REGs when 1 OFDM symbol is mapped in a non-interleaved manner in the embodiment of the present application. In fig. 2, numbers 0 to 23 identify 24 REGs, giving a total of 4 CCEs, and the CCEs with corresponding numbers from small to large are sorted from small to large according to the size of frequency.
In fig. 2, each CCE corresponds to 6 REGs, and the REGs with corresponding numbers from small to large are sorted in the frequency domain according to the order from small to large.
When 1 OFDM symbol is used for sending downlink control signaling and the REG is mapped to the CCE in an interleaving mode, the REGs are sequenced in a frequency domain from small to large according to the frequency sequence; defining a virtual REG group consisting of two ascending ordersContinuous REG composition of columns, each dummy REG group nVREGAnd REG group nREGAccording to a predetermined functional relationship, e.g. nVREG＝f(nREG) Mapping is carried out, and the preset functional relation ensures that the virtual REG groups are uniformly distributed on the frequency domain; one CCE consists of 3 virtual REG groups arranged in ascending order.
In the embodiments of the present application, the REG groups refer to actual existing REG groups, as opposed to defined virtual REG groups.
Referring to fig. 3, fig. 3 is a schematic diagram illustrating the distribution of CCEs and REGs when 1 OFDM symbol is mapped in an interleaving manner in the embodiment of the present application.
The numbers 0 to 23 in fig. 3 identify 24 REGs, giving a schematic diagram of the distribution of one CCE. REGs numbered 0 and 1 constitute a virtual REG group 1, REGs numbered 2 and 3 constitute a virtual REG group 2, and REG groups 4 and 5 constitute a virtual REG group 3, while REG group 1 includes REGs numbered 0 and 1, REG group 2 includes REGs numbered 6 and 7; REG group 3 includes REGs of numbers 12 and 13, and in fig. 3, virtual REG group 1 corresponds to REG group 1, virtual REG group 2 corresponds to REG group 5, and virtual REG group 3 corresponds to REG group 9. The virtual REG groups and REGs are mapped by a predetermined functional relation, which, as shown in fig. 3, achieves the effect of ensuring that the virtual REG groups are uniformly distributed in the frequency domain.
When 2 OFDM symbols are used for sending downlink control signaling and the REG is mapped to the CCE in a non-interleaving mode, the REGs are firstly sequenced in time domain from first to last and then sequenced in frequency domain from small to large; the CCEs are arranged in ascending REG order.
Referring to fig. 4, fig. 4 is a schematic diagram illustrating the distribution of CCEs and REGs when 2 OFDM symbols are mapped in a non-interleaved manner in the embodiment of the present application.
In fig. 4, numbers 0 to 47 identify 48 REGs, the larger the number of REGs, the larger the frequency thereof; for a CCE numbered 0, the CCE indicates the smallest frequency, and the frequency of all REGs in the CCE numbered 1 is greater than the frequency of all REGs in the CCE numbered 0; in this way, there is no crossing in the frequency of REGs in each CCE, i.e., the frequency of REG No. 6 is greater than the frequency of REG No. 5.
When 2 OFDM symbols are used for sending downlink control signaling and the REGs are mapped to CCEs in an interleaving mode, the REGs are firstly sequenced in a time domain from first to last in sequence and then sequenced in a frequency domain from small to large in sequence; defining a virtual REG group consisting of two continuous REGs which are arranged in an ascending order, wherein each virtual REG group and each REG group are mapped according to a preset functional relation which ensures that the virtual REG groups are uniformly distributed on a frequency domain; one CCE consists of 3 virtual REG groups arranged in ascending order.
Referring to fig. 5, fig. 5 is a schematic diagram illustrating the distribution of CCEs and REGs when 2 OFDM symbols are mapped in an interleaving manner in the embodiment of the present application.
Numbers 0 to 47 in fig. 5 identify 48 REGs, and a distribution diagram of one CCE is given. All REGs are first ordered in time domain from first to last in time and then in frequency domain from small to large in frequency. One CCE consists of 3 virtual REG groups arranged in ascending order. REGs numbered 0 and 1 constitute a virtual REG group 1, REGs numbered 2 and 3 constitute a virtual REG group 2, and REG groups 4 and 5 constitute a virtual REG group 3, while REG group 1 includes REGs numbered 0 and 1, REG group 5 includes REGs numbered 2 and 3; the REG group 9 includes REGs of numbers 12 and 13, and the virtual REG group 1 corresponds to REG group 1, the virtual REG group 2 corresponds to REG group 5, and the virtual REG group 3 corresponds to REG group 9 in fig. 5. The virtual REG groups and REGs are mapped by a predetermined functional relation, which, as shown in fig. 5, achieves the effect of ensuring that the virtual REG groups are uniformly distributed in the frequency domain.
Similar to L TE, the UE monitors multiple aggregation levels of PDCCH candidates in a designated search space to enable link-level adaptation of the PDCCH.
And adopting a hierarchical nested search space structure, specifically configuring a candidate search space of an aggregation level except the highest aggregation level as a subset of the candidate search space of the highest aggregation level.
Referring to fig. 6, fig. 6 is a schematic diagram of different aggregation levels in the embodiment of the present application. The candidate search spaces with aggregation levels of 1, 2, and 4 in fig. 6 are a subset of the candidate search spaces with aggregation level 8.
Thus arranged, the channel estimation result of the NR-PDCCH candidate of the maximum aggregation level can be reused to demodulate NR-PDCCH candidates not of the maximum aggregation level.
To reduce the blocking probability, the search space for which the NR-PDCCH candidate is not the largest aggregation level candidate is randomized in a UE-specific fashion, while ensuring that the randomized result is also mapped in a hierarchical structure.
In particular, for each user, when a CCE coefficient is initialized in a candidate search space of an aggregation level other than the highest aggregation level, initialization is performed in a randomly selected manner.
Still taking fig. 6 as an example, for different UEs, the blocking probability of different terminals is reduced, e.g., by randomly setting the initial CCE coefficients of the candidate search spaces for each aggregation level of UE1 and UE2, while ensuring a hierarchically nested structure.
In summary, the present application configures the symbol length, the size of the frequency domain, the composition of REG and CCE, and the mapping manner for sending the downlink control signaling, so as to meet the requirement of downlink control channel transmission of the 5G system.
Since the 5G system supports different types of terminals, a new downlink control channel is designed. The patent provides OFDM symbol length and frequency domain bandwidth supported by a 5G downlink control channel, and provides a mapping mode from interlaced and non-interlaced CCEs to REGs under different OFDM symbol lengths. For the design of the search space, in order to reduce the blind decoding times of the terminal, a search space design method with different aggregation levels being hierarchical nesting is provided, and a method for reducing the blocking probability is provided.
The above-described aspects of the present invention take into account the characteristics of a 5G communication system to be applicable to various types of terminals.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims (7)

1. A downlink control channel configuration method is applied to a 5G system, and is characterized by comprising the following steps:
when the 5G system works in a high-frequency band, a mode of using analog beam forming is configured to send downlink control signaling on the 1 st orthogonal frequency division multiplexing OFDM symbol of a subframe for each user; when the 5G system works in a low-frequency band, a digital beam forming mode is configured to be used for sending downlink control signaling on the first OFDM symbol or the first two OFDM symbols of a subframe for each user, wherein the downlink control signaling is sent on a plurality of Physical Resource Blocks (PRBs) in a frequency domain when being sent on the first two OFDM symbols of the subframe;
when the size of the frequency domain of the symbol for sending the downlink control signaling is configured, the following conditions are met: the configured frequency domain supports the size of the frequency domain under the combination of the maximum downlink control information load and the maximum aggregation level, and supports the bandwidth of the minimum user terminal UE;
configuring a resource element group REG for sending a downlink control signaling to be composed of one PRB of a frequency domain and one OFDM symbol of a time domain; each control channel element CCE consists of 6 REGs; wherein, when the REGs are mapped to the CCEs in a non-interleaved manner, 6 REGs in one CCE are consecutive; when REGs are mapped to CCEs in an interleaved manner, REGs in one CCE are divided into 3 REG groups nREGWherein each n isREGConsists of 2 consecutive REGs.
2. The method of claim 1,
when 1 OFDM symbol is used for transmitting downlink control signaling, and the REGs are mapped to the CCEs in a non-interleaving mode, the REGs are sequenced in a frequency domain from small to large, and each CCE consists of 6 continuous REGs which are arranged in an ascending order.
3. The method of claim 1,
when 1 OFDM symbol is used for sending downlink control signaling and the REG is mapped to the CCE in an interleaving mode, the REGs are sequenced in a frequency domain from small to large according to the frequency sequence; defining a virtual REG group consisting of two consecutive REGs arranged in ascending order, each virtual REG group nVREGAnd nREGAccording to the methodSetting a function relation to map; one CCE is formed by 3 n arranged in ascending orderVREGComposition is carried out; wherein the predetermined functional relation guarantees 3 n in ascending orderVREGAre evenly distributed in the frequency domain.
4. The method of claim 1,
when 2 OFDM symbols are used for sending downlink control signaling and the REG is mapped to the CCE in a non-interleaving mode, the REGs are firstly sequenced in time domain from first to last and then sequenced in frequency domain from small to large; each CCE consists of 6 ascending REGs.
5. The method of claim 1,
when 2 OFDM symbols are used for sending downlink control signaling and the REGs are mapped to CCEs in an interleaving mode, the REGs are firstly sequenced in a time domain from first to last in sequence and then sequenced in a frequency domain from small to large in sequence; defining a virtual REG group nVREGConsisting of two consecutive REGs in ascending order, each nVREGAnd nREGMapping is performed according to a preset functional relation which ensures n arranged according to an ascending orderVREGAre uniformly distributed on a frequency domain; one CCE is formed by 3 n arranged in ascending orderVREGAnd (4) forming.
6. The method according to any one of claims 1-5, wherein the method further comprises:
the candidate search spaces for aggregation levels other than the highest aggregation level are a subset of the candidate search spaces for the highest aggregation level.
7. The method of claim 6,
for each user, the CCE coefficients are initialized in a randomly selected manner when the CCE coefficients are initialized in a candidate search space of an aggregation level other than the highest aggregation level.
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CN201910521281.8A CN110190943A (en) 2017-08-30 2017-08-30 A kind of resource allocation method and device of down control channel
CN201710760510.2A CN109428701B (en) 2017-08-30 2017-08-30 Downlink control channel configuration method
CN201910521404.8A CN110324134B (en) 2017-08-30 2017-08-30 Method and device for configuring search space of downlink control channel
CN201910520968.XA CN110149195B (en) 2017-08-30 2017-08-30 Downlink control channel configuration method and device
PCT/CN2017/117461 WO2019041671A1 (en) 2017-08-30 2017-12-20 Method and apparatus for configuring downlink control channel, and storage medium

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021016917A1 (en) * 2019-07-31 2021-02-04 Qualcomm Incorporated Control resource set design for bandwidth reduced low-tier user equipment
CN113300748B (en) * 2020-02-21 2022-08-02 大唐移动通信设备有限公司 Beam forming device, base station and beam forming method
WO2022061827A1 (en) * 2020-09-27 2022-03-31 华为技术有限公司 Beam adjustment method and apparatus

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102638892A (en) * 2012-03-26 2012-08-15 电信科学技术研究院 Method and device for performing resource mapping to E-PDCCHs (enhanced-physical downlink control channels)
CN102904851A (en) * 2011-07-26 2013-01-30 中兴通讯股份有限公司 Method and system for mapping PCFICH (physical control format indicator channel)
CN104488342A (en) * 2012-07-23 2015-04-01 株式会社Ntt都科摩 Wireless communications method, wireless communications system, and wireless base station
WO2017111987A1 (en) * 2015-12-22 2017-06-29 Intel IP Corporation Lte assisted prach transmission in 5g systems

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8724636B2 (en) * 2008-03-31 2014-05-13 Qualcomm Incorporated Methods of reliably sending control signal
JP5073779B2 (en) * 2010-04-30 2012-11-14 株式会社エヌ・ティ・ティ・ドコモ Base station apparatus and user terminal
CN102307083A (en) * 2011-08-12 2012-01-04 电信科学技术研究院 Aperiodic feedback of CSI (channel state information) as well as scheduling method, device and system thereof
US9794913B2 (en) * 2012-01-27 2017-10-17 Interdigital Patent Holdings, Inc. Systems and/or methods for providing EPDCCH in a multiple carrier based and/or quasi-collated network
CN103312435B (en) * 2012-03-09 2016-03-02 华为技术有限公司 A kind of modulation of control channel or the determination method and apparatus of the transmission number of plies
CN104717748A (en) * 2013-12-11 2015-06-17 北京三星通信技术研究有限公司 Physical downlink control channel (PDCCH) resource allocation method and device
US10356770B2 (en) * 2015-10-01 2019-07-16 Qualcomm Incorporated Techniques for using an enhanced physical control format indicator channel to identify characteristics of a control region including a set of physical downlink control channels

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102904851A (en) * 2011-07-26 2013-01-30 中兴通讯股份有限公司 Method and system for mapping PCFICH (physical control format indicator channel)
CN102638892A (en) * 2012-03-26 2012-08-15 电信科学技术研究院 Method and device for performing resource mapping to E-PDCCHs (enhanced-physical downlink control channels)
CN104488342A (en) * 2012-07-23 2015-04-01 株式会社Ntt都科摩 Wireless communications method, wireless communications system, and wireless base station
WO2017111987A1 (en) * 2015-12-22 2017-06-29 Intel IP Corporation Lte assisted prach transmission in 5g systems

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
WF on PDCCH;NTT DOCOMO等;《3GPP TSG RAN WG1 #89, R1-1709375》;20170519;见全文 *

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