CN103002581B - Physical Downlink Control Channel bearing method and system based on demodulated reference signal - Google Patents
Physical Downlink Control Channel bearing method and system based on demodulated reference signal Download PDFInfo
- Publication number
- CN103002581B CN103002581B CN201110276286.2A CN201110276286A CN103002581B CN 103002581 B CN103002581 B CN 103002581B CN 201110276286 A CN201110276286 A CN 201110276286A CN 103002581 B CN103002581 B CN 103002581B
- Authority
- CN
- China
- Prior art keywords
- control channel
- reference signal
- downlink control
- physical downlink
- demodulated reference
- 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.)
- Active
Links
Landscapes
- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses a kind of Physical Downlink Control Channel bearing method based on demodulated reference signal, including：OFDM (OFDM) symbol of distribution carrying demodulated reference signal and/or the OFDM symbol neighbouring with carrying the OFDM symbol of demodulated reference signal are used to carry Physical Downlink Control Channel, or distribution is used to carry Physical Downlink Control Channel with the neighbouring resource unit of demodulated reference signal (RE).The present invention also accordingly discloses a kind of Physical Downlink Control Channel bearing system based on demodulated reference signal.The present invention combines the distribution character of user terminal, the feature of number of users and transmission channel, on the one hand Physical Downlink Control Channel can be made to carry out resource allocation with smaller resource allocation granularity, the wasting of resources is reduced while holding based on demodulated reference signal transmissions to reduce interference, improve resource utilization, so as to expand Physical Downlink Control Channel capacity, the stability of a system is improved.
Description
Technical field
The present invention relates to the communications field, more particularly to a kind of Physical Downlink Control Channel carrying based on demodulated reference signal
Method and system.
Background technology
In the version (Release, R) 8/9 of Long Term Evolution (Long term evolution, LTE) system, in order to right
The quality of channel measures and the data symbol of reception is demodulated, and devises public reference signal (Common
Reference Signal, CRS).User equipment (User Equipment, UE) can carry out the measurement of channel by CRS, from
And support UE to carry out cell reselection and be switched to Target cell, and carry out the measurement of channel quality in UE connection status.When dry
Disturb rank it is higher when, physical layer can be disconnected by high-rise related Radio Link connection failure signaling.
In LTE R10, in order to further improve the average availability of frequency spectrum of cell and the cell edge availability of frequency spectrum with
And each UE throughput, respectively define two kinds of reference signals：Channel information reference signal (CSI-RS) and demodulation reference letter
Number (DMRS), wherein, CSI-RS is used for the measurement of channel, by the measurement to CSI-RS can calculate UE need it is anti-to eNB
Pre-coding matrix index (Precoding Matrix Indicator, PMI), the channel quality information instruction (Channel of feedback
Quality Indicator, CQI) and order instruction (Rank Indicator, RI)；DMRS is used for the solution of DSCH Downlink Shared Channel
Adjust, using DMRS demodulation the method for wave beam can be utilized to reduce the interference between different receiving sides and different districts, and can be with
Hydraulic performance decline caused by reducing code book granularity, and the expense of descending control signaling is reduced to a certain extent.
In LTE R8, R9 and R10, Physical Downlink Control Channel be mainly distributed on first 1 of a subframe, it is preceding 2 or
3 OFDM (Orthogonal Frequency Division Multiplexing, OFDM) symbols before person, and base
In public reference signal (cell specific reference signal, CRS), specifically distribution is needed according to different subframes
Type and CRS port number configure, Physical Downlink Control Channel position corresponding to different subframe types and CRS port numbers
As shown in table 1：
Table 1
Each receiving side needs to carry out blind check, the original position of blind check and first prime number of control channel according to first three symbol
Mesh is relevant from the wireless network temporary identifications and different control information of distributing to receiving side.Typically control information can be divided into public affairs
There are control information and proprietary control information, publicly-owned control information can be placed on the common search sky of Physical Downlink Control Channel
Between, proprietary control information can be placed on public all spaces and dedicated search space.Receiving side determines current son after blind check
Frame whether there is public system message, descending scheduling or uplink scheduling information.Because this Downlink Control Information does not have HARQ
Feedback, so needing to ensure that the bit error rate of detection is as low as possible.
Under LTE R10 heterogeneous networks, because different base station type has stronger interference, it is contemplated that macro base station (Macro
ENodeB) interference problem to micro-base station (Pico) and Home eNodeB (Home eNodeB) propose profit to macro base station interference problem
Solve to interfere problem between different type base station with the silent method of resource, simultaneously as micro- in heterogeneous network scene
Base station and Home eNodeB are frequently used for focus covering, therefore number of users can increase under this scene, when using RRH in heterogeneous network
In the case that (Remote Radio Head) carries out focus covering, and each RRH uses same cells ID with macro base station, it can give
Conventional physical down channel brings very big capacity pressure, and it is stable to be unfavorable for system；In addition, if in the LTE R10/R11 stages
The mechanism that unicast service transmission is carried out in MBSFN sub-frame is introduced, may result in the PDCCH for being used to carry of MBSFN configurations
2 OFDM symbols off-capacity, it is stable to be unfavorable for system.
The content of the invention
In view of this, it is a primary object of the present invention to provide a kind of physical down based on demodulated reference signal to control letter
Road bearing method and system, Physical Downlink Control Channel capacity can be expanded, improve the stability of a system.
To reach above-mentioned purpose, the technical proposal of the invention is realized in this way：
A kind of Physical Downlink Control Channel bearing method based on demodulated reference signal, including：Distribution carrying demodulation reference
The orthogonal frequency division multiplex OFDM symbol of signal and/or the OFDM symbol neighbouring with carrying the OFDM symbol of demodulated reference signal are used for
Physical Downlink Control Channel is carried, or, distribution is used to carry physical down with the neighbouring resource unit RE of demodulated reference signal
Control channel.
The OFDM symbol and/or the OFDM symbol with carrying demodulated reference signal of the distribution carrying demodulated reference signal are adjacent
When near OFDM symbol carries Physical Downlink Control Channel, specific bearing mode is one or more of：
The OFDM symbol for carrying demodulated reference signal is only selected to be used to carry enhancing Physical Downlink Control Channel；
Select the OFDM symbol for carrying demodulated reference signal and the OFDM symbol with carrying demodulated reference signal adjacent
1 closely or 2 OFDM symbols are used to carry enhancing Physical Downlink Control Channel；
Only the selection OFDM symbol neighbouring with the OFDM symbol of carrying demodulated reference signal is used to carry enhancing physical down
Control channel.
Distribution with the neighbouring RE of demodulated reference signal be used for carry Physical Downlink Control Channel when, specific bearing mode be with
Lower one or more：
Select for carry demodulated reference signal OFDM symbol on RE and with carrying RE pairs of demodulated reference signal
Answer same sub-carrier, the RE of adjacent 1 or 2 OFDM symbols is used to carry Physical Downlink Control Channel；
The only RE of the corresponding same sub-carriers of RE of selection and carrying demodulated reference signal, adjacent 1 or 2 OFDM symbols
For carrying Physical Downlink Control Channel；
Select for carry demodulated reference signal OFDM symbol on it is adjacent with the RE shared by demodulated reference signal
RE, and with carrying the RE of the corresponding same sub-carriers of RE of demodulated reference signal, adjacent 1 or 2 OFDM symbols for holding
Carry Physical Downlink Control Channel.
For two adjacent time slots, first time slot is according to the specific bearing mode carrying physical down control letter
Road, the demodulated reference signal of the distribution of second time slot and first time slot neighbouring 1 or 2 OFDM symbols are carried out under physics
The carrying of row control channel.
The Physical Downlink Control Channel of bearing downlink mandate and the Physical Downlink Control Channel of carrying uplink authorization exist respectively
Two adjacent slot transmissions.
The physical down control information of bearing downlink mandate is in the physical down control based on demodulated reference signal
Channel continues to use LTE R8/R9/R10 mode and carries out the transmission of Physical Downlink Control Channel, carries uplink authorization
The mode that physical down control information continues to use LTE R8/R9/R10 carries out physical downlink control channel transmission.
Physical Downlink Control Channel of the physical down control information of bearing downlink mandate based on demodulated reference signal uploads
Mode that is defeated or continuing to use LTE R8/R9/R10 carries out physical downlink control channel transmission；Carry the physical down control of uplink authorization
Only when downlink business be present in information processed, using the physical downlink control channel transmission based on demodulated reference signal,
Otherwise the mode for continuing to use LTE R8/R9/R10 carries out physical downlink control channel transmission.
Carry out the resource allocation of Physical Downlink Control Channel as partition size per Physical Resource Block PRB using every time slot, specifically
's：
Polymerization grade can be one of following manner：
{3,6,12,18}；{2,4,8,16}；{1,2,4,8}；{3,6,12}；{2,4,8}；{ 1,2,4 }, { 4,8,12 }；
Or
It is different according to CSI-RS port numbers, using different polymerization grades：When the time slot that ePDCCH is carried in RB has 4
During individual or 8 ports CSI-RS transmission, aggregation level is one of following manner：{2,4,8,16}；{3,6,12,18}；{2,
4,8}；{3,6,12}：{4,8,12}；When the time slot that ePDCCH is carried in RB has the CSI-RS transmission of 2 or 4 ports
When, using one of following polymerization methodses：{3,6,12,18}；{2,4,8,16}；{1,2,4,8}；{3,6,12}；{2,4,8}；{1,
2,4}。
This method also includes：When configurating channel measuring reference signals are transmitted in subframe, only allow to continue to use LTER8/R9/
The transmission region and transmission means of R10 Physical Downlink Control Channel are transmitted.
This method also includes：Pattern according to the maximum cost of demodulated reference signal carries out the money of Physical Downlink Control Channel
Source unit maps.
A kind of Physical Downlink Control Channel bearing system based on demodulated reference signal, including base station and can be built with base station
The terminal of vertical wireless connection, the base station be used for the orthogonal frequency division multiplex OFDM symbol for distributing carrying demodulated reference signal and/or
Neighbouring OFDM symbol is used to carry Physical Downlink Control Channel with the OFDM symbol of carrying demodulated reference signal, or, distribution
The resource unit RE neighbouring with demodulated reference signal is used to carry Physical Downlink Control Channel.
The OFDM symbol of the base station distribution carrying demodulated reference signal and/or the OFDM with carrying demodulated reference signal are accorded with
During number neighbouring OFDM symbol carrying Physical Downlink Control Channel, specific bearing mode is one or more of：
The OFDM symbol for carrying demodulated reference signal is only selected to be used to carry enhancing Physical Downlink Control Channel；
Select the OFDM symbol for carrying demodulated reference signal and the OFDM symbol with carrying demodulated reference signal adjacent
1 closely or 2 OFDM symbols are used to carry enhancing Physical Downlink Control Channel；
Only the selection OFDM symbol neighbouring with the OFDM symbol of carrying demodulated reference signal is used to carry enhancing physical down
Control channel.
When the base station distribution is used to carry Physical Downlink Control Channel with the neighbouring RE of demodulated reference signal, specific carrying
Mode is one or more of：
Select for carry demodulated reference signal OFDM symbol on RE and with carrying RE pairs of demodulated reference signal
Answer same sub-carrier, the RE of adjacent 1 or 2 OFDM symbols is used to carry Physical Downlink Control Channel；
The only RE of the corresponding same sub-carriers of RE of selection and carrying demodulated reference signal, adjacent 1 or 2 OFDM symbols
For carrying Physical Downlink Control Channel；
Select for carry demodulated reference signal OFDM symbol on it is adjacent with the RE shared by demodulated reference signal
RE, and with carrying the RE of the corresponding same sub-carriers of RE of demodulated reference signal, adjacent 1 or 2 OFDM symbols for holding
Carry Physical Downlink Control Channel.
For two adjacent time slots, the base station is additionally operable to first time slot of configuration and held according to the specific bearing mode
Physical Downlink Control Channel is carried, is that second time slot distributes 1 or 2 neighbouring with the demodulated reference signal of first time slot
OFDM symbol carries out the carrying of Physical Downlink Control Channel.
The base station is additionally operable to configure under the Physical Downlink Control Channel of bearing downlink mandate and the physics of carrying uplink authorization
Row control channel is respectively in two adjacent slot transmissions.
The physical down control information that the base station is additionally operable to configure bearing downlink mandate is believed described based on demodulation reference
Number Physical Downlink Control Channel on transmit or continue to use LTE R8/R9/R10 mode and carry out the biography of Physical Downlink Control Channel
Defeated, the physical down control information for carrying uplink authorization continues to use LTE R8/R9/R10 mode and carries out Physical Downlink Control Channel
Transmission.
The base station is additionally operable to configure physics of the physical down control information based on demodulated reference signal of bearing downlink mandate
The mode that LTE R8/R9/R10 are transmitted or continued to use on down control channel carries out physical downlink control channel transmission；Carry up
Only when there is downlink business in the physical down control information of mandate, using under the physics based on demodulated reference signal
Row control channel transmission, the mode for otherwise continuing to use LTE R8/R9/R10 carry out physical downlink control channel transmission.
The base station is additionally operable to carry out the money of Physical Downlink Control Channel as partition size per Physical Resource Block PRB using every time slot
Source is distributed, specifically：
Polymerization grade can be one of following manner：
{3,6,12,18}；{2,4,8,16}；{1,2,4,8}；{3,6,12}；{2,4,8}；{ 1,2,4 }, { 4,8,12 }；
Or
It is different according to CSI-RS port numbers, using different polymerization grades：When the time slot that ePDCCH is carried in RB has 4
During individual or 8 ports CSI-RS transmission, aggregation level is one of following manner：{2,4,8,16}；{3,6,12,18}；{2,
4,8}；{3,6,12}：{4,8,12}；When the time slot that ePDCCH is carried in RB has the CSI-RS transmission of 2 or 4 ports
When, using one of following polymerization methodses：{3,6,12,18}；{2,4,8,16}；{1,2,4,8}；{3,6,12}；{2,4,8}；{1,
2,4}。
The base station is additionally operable to, when configurating channel measuring reference signals are transmitted in subframe, only allow to continue to use LTER8/R9/
The transmission region and transmission means of R10 Physical Downlink Control Channel are transmitted.
The base station is additionally operable to carry out the money of Physical Downlink Control Channel according to the pattern of the maximum cost of demodulated reference signal
Source unit maps.
Physical Downlink Control Channel bearing method and system of the invention based on demodulated reference signal, distribution carrying demodulation ginseng
Examine the orthogonal frequency division multiplex OFDM symbol of signal and/or the OFDM symbol neighbouring with carrying the OFDM symbol of demodulated reference signal is used
In carrying Physical Downlink Control Channel, or, distribution is used to carry under physics with the neighbouring resource unit RE of demodulated reference signal
Row control channel.The present invention combines the feature of the distribution character of user terminal, number of users and transmission channel, on the one hand can make
Physical Downlink Control Channel carries out resource allocation with smaller resource allocation granularity, keeps based on demodulated reference signal transmissions to drop
The wasting of resources is reduced while low interference, improves resource utilization, so as to expand Physical Downlink Control Channel capacity, improves system
Stability.
Brief description of the drawings
Fig. 1-a are a kind of demodulation pilot tone pattern schematic diagram in normal cyclic prefix in LTE versions 10；
Fig. 1-b are another demodulation pilot tone pattern schematic diagram in normal cyclic prefix in LTE versions 10；
Fig. 1-c are another demodulation pilot tone pattern schematic diagram in normal cyclic prefix in LTE versions 10；
Fig. 2 is when selection is used for the OFDM symbol carrying Physical Downlink Control Channel for carrying demodulated reference signal, is implemented
A kind of schematic diagram of Physical Downlink Control Channel carrying position of example；
Fig. 3-a are when the OFDM symbol of selection carrying demodulated reference signal and its neighbouring 1 or 2 OFDM symbols hold
When carrying enhancing Physical Downlink Control Channel, a kind of Physical Downlink Control Channel carrying position view of embodiment；
Fig. 3-b are when the OFDM symbol of selection carrying demodulated reference signal and its neighbouring 1 or 2 OFDM symbols hold
When carrying enhancing Physical Downlink Control Channel, embodiment another Physical Downlink Control Channel carrying position view；
Fig. 3-c are when the OFDM symbol of selection carrying demodulated reference signal and its neighbouring 1 or 2 OFDM symbols hold
When carrying enhancing Physical Downlink Control Channel, embodiment another Physical Downlink Control Channel carrying position view；
Fig. 3-d are when the OFDM symbol of selection carrying demodulated reference signal and its neighbouring 1 or 2 OFDM symbols hold
When carrying enhancing Physical Downlink Control Channel, embodiment another Physical Downlink Control Channel carrying position view；
Fig. 4-a are when selecting the neighbouring resource unit of demodulated reference signal to be used to carry Physical Downlink Control Channel, in fact
Apply a kind of carrying position view of example；
Fig. 4-b are when selecting the neighbouring resource unit of demodulated reference signal to be used to carry Physical Downlink Control Channel, in fact
Apply a kind of excellent carrying position view of example；
Fig. 4-c are when selecting the neighbouring resource unit of demodulated reference signal to be used to carry Physical Downlink Control Channel, in fact
Applying example, another carries position view；
The relative position relation that Fig. 5-a are a kind of uplink authorization of embodiment and downstream grants information carries；
The relative position relation that Fig. 5-b are another uplink authorization of embodiment and downstream grants information carries；
The relative position relation that Fig. 5-c are another uplink authorization of embodiment and downstream grants information carries.
Embodiment
In order to effectively support the transmitting scene of the new introducing described in background technology, while consider to use R8/R9/R10
The backwards compatibility at family, the present invention strengthen existing Physical Downlink Control Channel.
The present invention basic thought be：Resource near distribution demodulation reference mark is used to carry physical down control letter
Road.
Specifically, the OFDM symbol of carrying demodulated reference signal can be distributed and/or with carrying demodulated reference signal
The neighbouring OFDM symbol of OFDM symbol is used to carry Physical Downlink Control Channel, can also distribute neighbouring with demodulated reference signal
Resource unit (Resource Element, RE) is used to carry Physical Downlink Control Channel.
It should be noted that when the OFDM symbol of distribution carrying demodulated reference signal and/or with carrying demodulated reference signal
OFDM symbol neighbouring OFDM symbol carrying Physical Downlink Control Channel when, its specific bearing mode can be following any
It is one or more：
1) OFDM symbol for carrying demodulated reference signal is only selected to be used to carry enhancing Physical Downlink Control Channel；
2) OFDM symbol for carrying demodulated reference signal and the OFDM symbol with carrying demodulated reference signal are selected
Neighbouring 1 or 2 OFDM symbols are used to carry enhancing Physical Downlink Control Channel；
3) only the selection OFDM symbol neighbouring with the OFDM symbol of carrying demodulated reference signal is used to carry under enhancing physics
Row control channel.
It should be noted that when distribution is used to carry Physical Downlink Control Channel with the neighbouring RE of demodulated reference signal,
Its specific bearing mode can be it is following any one or more：
1 ') select for carry demodulated reference signal OFDM symbol on RE and with carry demodulated reference signal RE
Corresponding same sub-carrier, the RE of adjacent 1 or 2 OFDM symbols are used to carry Physical Downlink Control Channel；
2 ') same sub-carrier corresponding with the RE for carrying demodulated reference signal, adjacent 1 or 2 OFDM symbols are only selected
RE be used for carry Physical Downlink Control Channel；
3 ') select for carry demodulated reference signal OFDM symbol on it is adjacent with the RE shared by demodulated reference signal
RE, and with carrying the corresponding same sub-carriers of RE of demodulated reference signal, the RE of adjacent 1 or 2 OFDM symbols is used for
Carry Physical Downlink Control Channel.
Preferably, when carrying out the transmission of physical down control information based on demodulated reference signal, the thing of bearing downlink mandate
Down control channel and the Physical Downlink Control Channel for carrying uplink authorization are managed respectively in two adjacent slot transmissions, changes speech
It, the Physical Downlink Control Channel of bearing downlink mandate is in previous slot transmission；Carry the physical down control of uplink authorization
Channel is in previous or the latter slot transmission.
Can be respectively it according to any one above-mentioned bearing mode it should be noted that for two adjacent time slots
OFDM symbol and/or RE are distributed, for carrying Physical Downlink Control Channel.If in addition, first time slot uses above-mentioned 1 ') extremely
3 ') any one bearing mode in, then second time slot can distribute 1 neighbouring with the demodulated reference signal of the first time slot
Or 2 OFDM symbols carry out the carrying of Physical Downlink Control Channel.
Optionally, the physical down control information of bearing downlink mandate is under the physics based on demodulated reference signal
The mode for transmitting or continuing to use LTE R8/R9/R10 in row control channel carries out the transmission of Physical Downlink Control Channel, and carrying is up
The mode that the physical down control information of mandate continues to use LTE R8/R9/R10 carries out physical downlink control channel transmission.
Optionally, physical down control letter of the physical down control information of bearing downlink mandate based on demodulated reference signal
The mode that LTE R8/R9/R10 are transmitted or continued to use on road carries out physical downlink control channel transmission；Carry the physics of uplink authorization
Only when there is downlink business in Downlink Control Information, using the Physical Downlink Control Channel based on demodulated reference signal
Transmission, the mode for otherwise continuing to use LTE R8/R9/R10 carry out physical downlink control channel transmission.
Preferably, the present invention is that partition size carries out Physical Downlink Control Channel per Physical Resource Block (PRB) with every time slot
Resource allocation, specifically：
Polymerization grade can be one of following manner：
{3,6,12,18}；{2,4,8,16}；{1,2,4,8}；{3,6,12}；{2,4,8}；{ 1,2,4 }, { 4,8,12 }；
Or it is different according to CSI-RS port numbers, using different polymerization grades：When the time slot that ePDCCH is carried in RB
In the presence of 4 or 8 ports CSI-RS transmission when, aggregation level can be one of following manner：{2,4,8,16}；{3,6,
12,18}；{2,4,8}；{3,6,12}：{4,8,12}；When the time slot that ePDCCH is carried in RB has 2 or 4 ports
During CSI-RS transmission, one of following polymerization methodses can be used：{3,6,12,18}；{2,4,8,16}；{1,2,4,8}；{3,6,
12}；{2,4,8}；{1,2,4}.
It should be noted that when being configured with channel measurement reference signal transmission in subframe, only allow to continue to use LTER8/R9/
The transmission region and transmission means of R10 Physical Downlink Control Channel are transmitted.
It should be noted that when carrying out physical downlink control channel transmission based on demodulated reference signal, join according to demodulation
The pattern for examining the maximum cost of signal carries out the resource unit mapping of Physical Downlink Control Channel.
For LTE R11 versions and its enhancing version, newly-designed Physical Downlink Control Channel refers to the thing of enhancing in text
Manage down control channel.
By system bandwidth is made up of a series of PRB.The position of physical down channel bearing is being illustrated in text
When, for convenience of description, based on a Physical Resource Block (PRB：Physical resource block) it is described, but not
Limit scope of the invention.
In accompanying drawing signal, in order to simple, by a PRB two time slots, (in LTE, a PRB corresponds in time domain
1ms, correspond to 12 subcarriers on frequency domain, wherein front and rear 0.5ms corresponds respectively to former and later two time slots (slot)) united
One signal, it is only to describe convenient here, during practical application, being not intended to limit former and later two time slots must adopt in a like fashion,
Also Physical Downlink Control Channel must be carried simultaneously by not limiting front and rear time slot.
It should be noted that in method of the present invention, the described money for being used to carry Physical Downlink Control Channel
It is not to be demodulated reference signal and/or public reference signal and/or channel status measuring reference signals institute in the unit location of source
The resource unit of occupancy.
The present invention also accordingly discloses a kind of Physical Downlink Control Channel bearing system, and the system is used to distribute carrying solution
The orthogonal frequency division multiplex OFDM symbol of reference signal and/or the OFDM neighbouring with carrying the OFDM symbol of demodulated reference signal is adjusted to accord with
Number be used for carry Physical Downlink Control Channel, or, distribution with the neighbouring resource unit RE of demodulated reference signal be used for carrier
Manage down control channel.
The OFDM symbol and/or the OFDM symbol with carrying demodulated reference signal of the distribution carrying demodulated reference signal are adjacent
When near OFDM symbol carries Physical Downlink Control Channel, specific bearing mode is one or more of：
The OFDM symbol for carrying demodulated reference signal is only selected to be used to carry enhancing Physical Downlink Control Channel；
Select the OFDM symbol for carrying demodulated reference signal and the OFDM symbol with carrying demodulated reference signal adjacent
1 closely or 2 OFDM symbols are used to carry enhancing Physical Downlink Control Channel；
Only the selection OFDM symbol neighbouring with the OFDM symbol of carrying demodulated reference signal is used to carry enhancing physical down
Control channel.
When the distribution is used to carry Physical Downlink Control Channel with the neighbouring RE of demodulated reference signal, specific bearing mode
For one or more of：
Select for carry demodulated reference signal OFDM symbol on RE and with carrying RE pairs of demodulated reference signal
Answer same sub-carrier, the RE of adjacent 1 or 2 OFDM symbols is used to carry Physical Downlink Control Channel；
The only RE of the corresponding same sub-carriers of RE of selection and carrying demodulated reference signal, adjacent 1 or 2 OFDM symbols
For carrying Physical Downlink Control Channel；
Select for carry demodulated reference signal OFDM symbol on it is adjacent with the RE shared by demodulated reference signal
RE, and with carrying the RE of the corresponding same sub-carriers of RE of demodulated reference signal, adjacent 1 or 2 OFDM symbols for holding
Carry Physical Downlink Control Channel.
For two adjacent time slots, the system is additionally operable to first time slot of configuration and held according to the specific bearing mode
Physical Downlink Control Channel is carried, is that second time slot distributes 1 or 2 neighbouring with the demodulated reference signal of first time slot
OFDM symbol carries out the carrying of Physical Downlink Control Channel.
The system is additionally operable to configure under the Physical Downlink Control Channel of bearing downlink mandate and the physics of carrying uplink authorization
Row control channel is respectively in two adjacent slot transmissions.
The physical down control information that the system is additionally operable to configure bearing downlink mandate is believed described based on demodulation reference
Number Physical Downlink Control Channel on transmit or continue to use LTE R8/R9/R10 mode and carry out the biography of Physical Downlink Control Channel
Defeated, the physical down control information for carrying uplink authorization continues to use LTE R8/R9/R10 mode and carries out Physical Downlink Control Channel
Transmission.
The system is additionally operable to configure physics of the physical down control information based on demodulated reference signal of bearing downlink mandate
The mode that LTE R8/R9/R10 are transmitted or continued to use on down control channel carries out physical downlink control channel transmission；Carry up
Only when there is downlink business in the physical down control information of mandate, using under the physics based on demodulated reference signal
Row control channel transmission, the mode for otherwise continuing to use LTE R8/R9/R10 carry out physical downlink control channel transmission.
The system is additionally operable to carry out the money of Physical Downlink Control Channel as partition size per Physical Resource Block PRB using every time slot
Source is distributed, specifically：
Polymerization grade can be one of following manner：
{3,6,12,18}；{2,4,8,16}；{1,2,4,8}；{3,6,12}；{2,4,8}；{ 1,2,4 }, { 4,8,12 }；
Or
It is different according to CSI-RS port numbers, using different polymerization grades：When the time slot that ePDCCH is carried in RB has 4
During individual or 8 ports CSI-RS transmission, aggregation level is one of following manner：{2,4,8,16}；{3,6,12,18}；{2,
4,8}；{3,6,12}：{4,8,12}；When the time slot that ePDCCH is carried in RB has the CSI-RS transmission of 2 or 4 ports
When, using one of following polymerization methodses：{3,6,12,18}；{2,4,8,16}；{1,2,4,8}；{3,6,12}；{2,4,8}；{1,
2,4}。
The system is additionally operable to, when configurating channel measuring reference signals are transmitted in subframe, only allow to continue to use LTER8/R9/
The transmission region and transmission means of R10 Physical Downlink Control Channel are transmitted.
The system is additionally operable to carry out the money of Physical Downlink Control Channel according to the pattern of the maximum cost of demodulated reference signal
Source unit maps.
Illustrate the embodiment of the present invention below by specific embodiment, to instruct this area correlation technique people
Member carries out the implementation of scheme.For convenience of description, in description below, Physical Downlink Control Channel that R8/R9/R10 is defined
Referred to as legacy PDCCH；The Physical Downlink Control Channel that the present invention newly defines is referred to as ePDCCH.
Embodiment 1
In the method described in the present embodiment, the mode that CCCH information continues to use legacy PDCCH is passed
Defeated, embodiment can be divided into following steps substantially：
Step 1：Network side completes scheduling, determines that present sub-frame needs transmitting physical downlink channel control user.
Step 2：The carrying position of Physical Downlink Control Channel determines that wherein R8/R9/R10 user continues to use R8/R9/R10 and determined
The legacy PDCCH of justice are transmitted based on CRS mode in preceding k OFDM symbol, wherein k<=4；R11 and later release
User, can be in the transmission of the legacy PDCCH based on CRS that R8/R9/R10 is defined according to dispatch situation, can also be in this hair
It is based on transmitting on demodulated reference signal (DMRS) ePDCCH defined in bright.
Step 3：The user transmitted on legacy PDCCH is defined in R8/R9/R10 for dispatching, according to R8/R9/R10
Defined legacy PDCCH mode carries out channel coding, modulation, intertexture and mapping processing.And for particular UE, then press
Blind Detecting is carried out according to the R8/R9/R10 aggregation levels defined and search space.
For dispatching in the user transmitted defined in the present invention on ePDCCH, user encoded respectively, modulate after, use
Without interleaving treatment between family.Each self-corresponding Physical Resource Block is mapped to the respective downlink control channel information of individual user
On.
Wherein, in order to be effectively transmitted based on demodulated reference signal, preferably each PRB precoding weights are protected
Hold it is constant, in the present embodiment the distribution of resource be using every PRB per time slot be partition size progress Physical Downlink Control Channel money
Source distribution.The physical resource unit point for being used to carry Physical Downlink Control Channel in i.e. same PRB in same time slot
The same user of dispensing, polymerization grade are allocated in units of the available resource units in a PRB-slot.
For the difference of the channel condition information of different user, polymerization grade can be one of following manner：{3,6,12,
18}；{2,4,8,16}；{1,2,4,8}；{3,6,12}；{2,4,8}；{1,2,4}；{4,8,12}.
Further, it is contemplated that CSI-RS is that full bandwidth is present, and periodically to send, therefore CSI- be present in some subframes
CSI-RS is not present in RS, some subframes., can be further according to CSI-RS's when considering influences of the CSI-RS to polymerization grade
Port number carries out the adjustment of aggregation level.
When the time slot that ePDCCH is carried in RB has the CSI-RS transmission of 4 or 8 ports, aggregation level can be
One of following manner：{2,4,8,16}；{3,6,12,18}；{2,4,8}；{3,6,12}：{4,8,12}；When being carried in RB
When either CSI-RS transmission in the presence of 2 or 4 ports is not present in ePDCCH time slot, using one of following polymerization methodses：
{3,6,12,18}；{2,4,8,16}；{1,2,4,8}；{3,6,12}；{2,4,8}；{1,2,4}.
Above-mentioned digital k is represented may PRB-slot numbers used in ePDCCH transmission.
It should be noted that the port number of CSI-RS here, can be non-zero power (non zero power)
CSI-RS and/or zero power CSI-RS.
Further, for DMRS in itself, the number of layers used for different PDSCH transmissions, DMRS expenses can also be present
Difference, in order to reduce the complexity that terminal carries out ePDCCH blind checks, when carrying out ePDCCH mappings, it can be opened according to the DMRS of maximum
Pin is mapped.
Physical down control signaling mainly includes two major classes：Common downlink control information and the specific descending controls of UE (terminal)
Signaling processed；And the specific descending control signalings of UE are further divided into the physical down control signaling and uplink authorization of downstream grants
Physical down control signaling.
When carrying out the transmission of physical down control information based on demodulated reference signal, the physical down control of bearing downlink mandate
Channel processed is in previous slot transmission；The physical down control information for carrying uplink authorization passes in previous or the latter time slot
It is defeated.
When carrying out physical downlink control channel transmission based on demodulated reference signal, it is preferred that make physical down control
What precoding weights used in transmission processed used when being transmitted with Physical Downlink Shared Channel (PDSCH) on the PRB prelists
Code weight value has uniformity (dimension is not necessarily identical, it is only necessary to which the weights of corresponding identical port are identical), so can be so as to
In reuse of the demodulated reference signal port to Physical Downlink Control Channel and Physical Downlink Shared Channel.Simultaneously by ePDCCH with
PDSCH is multiplexed on identical PRB (resource unit corresponding to carrying ePDCCH and PDSCH is different), can improve the utilization of resource
Rate.
Simultaneously, it is contemplated that the precoding weights of different user are different, when active user does not have downlink traffic transmission, for
The ePDCCH that row authorizes can not be multiplexed with the PDSCH of this user；And if be multiplexed with other users, due to active user's
EPDCCH precodings weights and the PDSCH weights of other users do not have uniformity, it is contemplated that what current LTE R8/9/10 were defined
The limitation of the DMRS port method of salary distribution, DMRS port can not reuse with the PDSCH of other users.When in view of the limiting factor
When, the feature of the Physical Downlink Control Channel information of two time slot carryings can carry out thing further according to following any mode
Manage the carrying of down control channel：
Mode 1：The physical down control information of bearing downlink mandate is under the physics based on demodulated reference signal
Transmitted in row control channel, the physical down control information for carrying uplink authorization is continued to use LTE R8/R9/R10 mode and passed
It is defeated.
Mode 2：Physical down control letter of the physical down control information of bearing downlink mandate based on demodulated reference signal
Transmitted on road；The physical down control information of uplink authorization is carried only when downlink business be present, using described based on solution
Adjust and transmitted on the Physical Downlink Control Channel of reference signal, the mode for otherwise continuing to use LTE R8/R9/R10 is transmitted.
Step 4, the Physical Downlink Control Channel information for completing mapping is transmitted.
Because control signaling is in transmission, various-service data have higher reliability requirement, therefore in the present embodiment, will
EPDCCH is mapped in neighbouring DMRS physical resource unit or OFDM symbol.
The demodulated reference signal pattern defined with reference to the LTE R10 shown in Fig. 1 a- Fig. 1 c, further passes through several realities
Apply example and illustrate specific resource mapping methods of several different ePDCCH on each PRB-slot.
Embodiment 2
In this embodiment, when carrying out ePDCCH transmission based on DMRS, select for carrying demodulated reference signal
OFDM symbol carries ePDCCH, and the schematic diagram of ePDCCH carrying position is as shown in Fig. 2 in fig 2, ePDCCH is carried on
In the shared OFDM symbol of DMRS transmission, in the diagram, ePDCCH is previous corresponding to downstream grants (DL grant)
Time slot carries, and uplink authorization (UL grant) is carried on the latter time slot DMRS transmission when based on demodulated reference signal transmissions
In shared OFDM symbol.
It should be noted that just for the sake of illustrating in figure, in practical application, UL grant can be not based on demodulation reference
Signal transmits, and is transmitted by the way of legacy PDCCH.
Embodiment 3
In this embodiment, when based on DMRS carry out ePDCCH transmission when, select for carry DMRS OFDM symbol with
And its 1 nearby or 2 OFDM symbols are used to carry ePDCCH, schematic diagram such as Fig. 3-a to 3-d of ePDCCH carrying position
It is shown, in this embodiment, not only select the OFDM symbol for carrying DMRS to carry ePDCCH, carry DMRS OFDM symbol
Neighbouring OFDM symbol is also used to carry ePDCCH, and the schematic diagram of ePDCCH carrying position is as shown in Fig. 3-a to 3-d.
In accompanying drawing 3-a, ePDCCH is carried in the shared OFDM symbol of DMRS transmission and its preceding 1 OFDM symbol
On number；In accompanying drawing 3-b, ePDCCH is carried in the shared OFDM symbol of DMRS transmission and its preceding 2 OFDM symbol
On；In 3-a and 3-b, ePDCCH corresponding to DL grant is carried on previous time slot, and ePDCCH corresponding to UL grant is carried
In the latter time slot.
In accompanying drawing 3-c, the previous time slot of ePDCCH carrieds corresponding to DL grant is in DMRS transmission shared
In OFDM symbol and before and after it in 1 OFDM symbol；EPDCCH carrieds the latter time slot exists corresponding to UL grant
In the shared OFDM symbol of DMRS transmission；In accompanying drawing 3-d, DL grant and UL grant are carried on first time slot
The shared OFDM symbol of DMRS transmission on and the OFDM symbol closed on, wherein, DL grant take first time slot
The shared OFDM symbol and 1 before it or 2 OFDM symbols of DMRS transmission；UL grant take first time slot
The shared OFDM symbol of DMRS transmission behind 1 or 2 OFDM symbols；
It should be noted that in the mode of the embodiment, described UL grant can also be not based on DMRS and be transmitted.
Embodiment 4
Consider that the RE nearer from DMRS, the accuracy of its channel estimation results is more reliable, ePDCCH from the robustness of transmission
Transmission performance be more easily guaranteed that.Therefore in this embodiment, when carrying out ePDCCH transmission based on DMRS, demodulation reference is selected
The neighbouring resource unit of signal is used to carry ePDCCH.
In Fig. 4-a, the RE in selection carrying DMRS OFDM symbol and the corresponding identical sub- loads of RE with carrying DMRS
Ripple, the RE of adjacent 1 or 2 OFDM symbols are used to carry ePDCCH.In Fig. 4-b, phase corresponding with the RE for carrying DMRS is selected
Same subcarrier, the RE of adjacent 1 or 2 OFDM symbols are used to carry ePDCCH；In Fig. 4-c, select for carrying DMRS's
The RE adjacent with the RE shared by DMRS in OFDM symbol and the corresponding same sub-carriers of RE, adjacent 1 with carrying DMRS
And/or the RE of 2 OFDM symbols is used to carry ePDCCH.
In the diagram, ePDCCH corresponding to downstream grants (DL grant) carries in previous time slot, uplink authorization (UL
Grant) when based on demodulated reference signal transmissions, it is carried in the shared OFDM symbol of the latter time slot DMRS transmission.
It should be noted that just for the sake of illustrating in figure, in practical application, UL grant can be not based on demodulation reference
Signal transmits, and is transmitted by the way of legacy PDCCH.
Embodiment 5
In the embodiment, when carrying out ePDCCH transmission based on DMRS, to the ePDCCH corresponding to downstream grants and up
Corresponding ePDCCH is authorized to carry out resource allocation in different ways.Can be based on any one group in embodiment 3,4
Close to realize, such as the mode shown in Fig. 5-a, 5-b, 5-c.
In Fig. 5-a, same sub-carrier corresponding with carrying DMRS RE, adjacent 1 or 2 OFDM in previous time slot are selected
The RE of symbol is used for ePDCCH corresponding to bearing downlink mandate；RE in the OFDM symbol in latter time slot shared by DMRS is selected to use
In ePDCCH corresponding to carrying uplink authorization；In Fig. 5-b and 5-c changing primarily directed to ePDCCH time delays corresponding to uplink authorization
It is kind, in Fig. 5-b, select in previous time slot with carry DMRS the corresponding same sub-carriers of RE, above adjacent 1 or 2
The RE of OFDM symbol is used for ePDCCH corresponding to bearing downlink mandate, selects corresponding identical with the RE that DMRS is carried in previous time slot
Subcarrier, the RE of 1 of rear adjacent or 2 OFDM symbol is used to carry ePDCCH corresponding to uplink authorization.In Fig. 5-c
In, select in previous time slot with carrying the DMRS corresponding same sub-carriers of RE, the RE of adjacent 1 or 2 OFDM symbols is used for
EPDCCH corresponding to bearing downlink mandate；The RE of OFDM symbol identical with DMRS occupancy is up for carrying in selection previous time slot
Authorize ePDCCH.
As can be seen that the present invention combines the feature of the distribution character of user terminal, number of users and transmission channel, on the one hand
Physical Downlink Control Channel can be made to carry out resource allocation with smaller resource allocation granularity, keep passing based on demodulated reference signal
It is defeated that the wasting of resources is reduced while interference to reduce, improve resource utilization.On the other hand, the transmission volume of control channel can be made
It is outer to obtain certain frequency diversity effect.
It should be noted that in the embodiment of ePDCCH resource impacts, it simply show several ways and be used to illustrate this hair
Bright described mapping thought, but it is not limited to above-mentioned mapping mode., can be based on talking about in embodiment 2 to 5 in practical application
Any combination of mode, belong to category of the present invention.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the scope of the present invention.
Claims (18)
1. a kind of Physical Downlink Control Channel bearing method based on demodulated reference signal, it is characterised in that this method includes：Point
Orthogonal frequency division multiplex OFDM symbol with carrying demodulated reference signal and/or the OFDM symbol with carrying demodulated reference signal are neighbouring
OFDM symbol be used to carry Physical Downlink Control Channel, or, distribution is used with the neighbouring resource unit RE of demodulated reference signal
In carrying Physical Downlink Control Channel；
And according to demodulated reference signal maximum cost pattern carry out Physical Downlink Control Channel resource unit mapping.
2. according to the method for claim 1, it is characterised in that the OFDM symbol of the distribution carrying demodulated reference signal
And/or when neighbouring OFDM symbol carries Physical Downlink Control Channel with the OFDM symbol of carrying demodulated reference signal, specifically hold
Load mode is one or more of：
The OFDM symbol for carrying demodulated reference signal is only selected to be used to carry enhancing Physical Downlink Control Channel；
Select the OFDM symbol for carrying demodulated reference signal and neighbouring with carrying the OFDM symbol of demodulated reference signal 1
Individual or 2 OFDM symbols are used to carry enhancing Physical Downlink Control Channel；
Only the selection OFDM symbol neighbouring with the OFDM symbol of carrying demodulated reference signal is used to carry enhancing physical down control
Channel.
3. according to the method for claim 1, it is characterised in that distribution is used for carrier with the neighbouring RE of demodulated reference signal
When managing down control channel, specific bearing mode is one or more of：
Select for carry demodulated reference signal OFDM symbol on RE and corresponding phases of RE with carrying demodulated reference signal
Same subcarrier, the RE of adjacent 1 or 2 OFDM symbols are used to carry Physical Downlink Control Channel；
Only the corresponding same sub-carriers of RE of selection and carrying demodulated reference signal, the RE of adjacent 1 or 2 OFDM symbols are used for
Carry Physical Downlink Control Channel；
Select for carry demodulated reference signal OFDM symbol on the RE adjacent with the RE shared by demodulated reference signal, with
And with carrying the RE of the corresponding same sub-carriers of RE of demodulated reference signal, adjacent 1 or 2 OFDM symbols for carrying physics
Down control channel.
4. according to the method for claim 3, it is characterised in that for two adjacent time slots, first time slot is according to institute
State specific bearing mode carrying Physical Downlink Control Channel, second time slot distribution and the demodulated reference signal of first time slot
The carrying of neighbouring 1 or 2 OFDM symbols progress Physical Downlink Control Channel.
5. according to the method described in any one of Claims 1-4, it is characterised in that the physical down control of bearing downlink mandate
The Physical Downlink Control Channel of channel and carrying uplink authorization is respectively in two adjacent slot transmissions.
6. according to the method described in any one of Claims 1-4, it is characterised in that the physical down control of bearing downlink mandate
Information transmits or continued to use LTE R8/R9/R10 mode on the Physical Downlink Control Channel based on demodulated reference signal
The transmission of Physical Downlink Control Channel is carried out, the physical down control information for carrying uplink authorization continues to use LTE R8/R9/R10's
Mode carries out physical downlink control channel transmission.
7. according to the method described in any one of Claims 1-4, it is characterised in that the physical down control of bearing downlink mandate
Information transmitted or continued to use LTER8/R9/R10 mode on the Physical Downlink Control Channel based on demodulated reference signal carries out physics
Down control channel transmits；The physical down control information of uplink authorization is carried only when downlink business be present, using described
The physical downlink control channel transmission based on demodulated reference signal, the mode for otherwise continuing to use LTE R8/R9/R10 carries out physics
Down control channel transmits.
8. according to the method described in any one of Claims 1-4, it is characterised in that using every time slot per Physical Resource Block PRB for divide
The resource allocation of Physical Downlink Control Channel is carried out with granularity, specifically：
Polymerization grade can be one of following manner：
{3,6,12,18}；{2,4,8,16}；{1,2,4,8}；{3,6,12}；{2,4,8}；{ 1,2,4 }, { 4,8,12 }；
Or
It is different according to CSI-RS port numbers, using different polymerization grades：When in RB carry ePDCCH time slot exist 4 or
During the CSI-RS transmission of 8 ports of person, aggregation level is one of following manner：{2,4,8,16}；{3,6,12,18}；{2,4,
8}；{3,6,12}：{4,8,12}；When the CSI-RS transmission of 2 or 4 ports be present in the time slot that ePDCCH is carried in RB,
Using one of following polymerization methodses：{3,6,12,18}；{2,4,8,16}；{1,2,4,8}；{3,6,12}；{2,4,8}；{1,2,
4}。
9. according to the method described in any one of Claims 1-4, it is characterised in that this method also includes：Match somebody with somebody confidence in subframe
During road measuring reference signals transmission, only allow transmission region and the transmission for continuing to use LTE R8/R9/R10 Physical Downlink Control Channel
Mode is transmitted.
10. a kind of Physical Downlink Control Channel bearing system based on demodulated reference signal, including base station and can be built with base station
The terminal of vertical wireless connection, the base station be used for the orthogonal frequency division multiplex OFDM symbol for distributing carrying demodulated reference signal and/or
Neighbouring OFDM symbol is used to carry Physical Downlink Control Channel with the OFDM symbol of carrying demodulated reference signal, or, distribution
The resource unit RE neighbouring with demodulated reference signal is used to carry Physical Downlink Control Channel；And according to demodulated reference signal most
The pattern of large overhead carries out the resource unit mapping of Physical Downlink Control Channel.
11. system according to claim 10, it is characterised in that the OFDM of the base station distribution carrying demodulated reference signal
Symbol and/or the OFDM symbol neighbouring with carrying the OFDM symbol of demodulated reference signal, when carrying Physical Downlink Control Channel, tool
Body bearing mode is one or more of：
The OFDM symbol for carrying demodulated reference signal is only selected to be used to carry enhancing Physical Downlink Control Channel；
Select the OFDM symbol for carrying demodulated reference signal and neighbouring with carrying the OFDM symbol of demodulated reference signal 1
Individual or 2 OFDM symbols are used to carry enhancing Physical Downlink Control Channel；
Only the selection OFDM symbol neighbouring with the OFDM symbol of carrying demodulated reference signal is used to carry enhancing physical down control
Channel.
12. system according to claim 10, it is characterised in that the base station distribution and the neighbouring RE of demodulated reference signal
During for carrying Physical Downlink Control Channel, specific bearing mode is one or more of：
Select for carry demodulated reference signal OFDM symbol on RE and corresponding phases of RE with carrying demodulated reference signal
Same subcarrier, the RE of adjacent 1 or 2 OFDM symbols are used to carry Physical Downlink Control Channel；
Only the corresponding same sub-carriers of RE of selection and carrying demodulated reference signal, the RE of adjacent 1 or 2 OFDM symbols are used for
Carry Physical Downlink Control Channel；
Select for carry demodulated reference signal OFDM symbol on the RE adjacent with the RE shared by demodulated reference signal, with
And with carrying the RE of the corresponding same sub-carriers of RE of demodulated reference signal, adjacent 1 or 2 OFDM symbols for carrying physics
Down control channel.
13. system according to claim 12, it is characterised in that for two adjacent time slots, the base station is additionally operable to
First time slot is configured according to the specific bearing mode carrying Physical Downlink Control Channel, be second time slot distribution with it is described
The demodulated reference signal of first time slot neighbouring 1 or 2 OFDM symbols carry out the carrying of Physical Downlink Control Channel.
14. according to the system described in any one of claim 10 to 13, it is characterised in that the base station is additionally operable to configure bearing downlink
The Physical Downlink Control Channel of mandate and the Physical Downlink Control Channel of carrying uplink authorization pass in two adjacent time slots respectively
It is defeated.
15. according to the system described in any one of claim 10 to 13, it is characterised in that the base station is additionally operable to configure bearing downlink
The physical down control information of mandate is transmitted or continued to use on the Physical Downlink Control Channel based on demodulated reference signal
LTE R8/R9/R10 mode carries out the transmission of Physical Downlink Control Channel, carries the physical down control information of uplink authorization
The mode for continuing to use LTE R8/R9/R10 carries out physical downlink control channel transmission.
16. according to the system described in any one of claim 10 to 13, it is characterised in that the base station is additionally operable to configure bearing downlink
LTE R8/ are transmitted or continue to use on Physical Downlink Control Channel of the physical down control information based on demodulated reference signal of mandate
R9/R10 mode carries out physical downlink control channel transmission；The physical down control information of carrying uplink authorization is only present
During downlink business, using the physical downlink control channel transmission based on demodulated reference signal, LTE R8/ are otherwise continued to use
R9/R10 mode carries out physical downlink control channel transmission.
17. according to the system described in any one of claim 10 to 13, it is characterised in that the base station is additionally operable to every time slot per thing
It is the resource allocation that partition size carries out Physical Downlink Control Channel to manage resource block PRB, specifically：
Polymerization grade can be one of following manner：
{3,6,12,18}；{2,4,8,16}；{1,2,4,8}；{3,6,12}；{2,4,8}；{ 1,2,4 }, { 4,8,12 }；
Or
It is different according to CSI-RS port numbers, using different polymerization grades：When in RB carry ePDCCH time slot exist 4 or
During the CSI-RS transmission of 8 ports of person, aggregation level is one of following manner：{2,4,8,16}；{3,6,12,18}；{2,4,
8}；{3,6,12}：{4,8,12}；When the CSI-RS transmission of 2 or 4 ports be present in the time slot that ePDCCH is carried in RB,
Using one of following polymerization methodses：{3,6,12,18}；{2,4,8,16}；{1,2,4,8}；{3,6,12}；{2,4,8}；{1,2,
4}。
18. according to the system described in any one of claim 10 to 13, it is characterised in that the base station is additionally operable to work as matches somebody with somebody in subframe
During the transmission of confidence road measuring reference signals, the transmission region that only allows to continue to use LTE R8/R9/R10 Physical Downlink Control Channel and
Transmission means is transmitted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110276286.2A CN103002581B (en) | 2011-09-16 | 2011-09-16 | Physical Downlink Control Channel bearing method and system based on demodulated reference signal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110276286.2A CN103002581B (en) | 2011-09-16 | 2011-09-16 | Physical Downlink Control Channel bearing method and system based on demodulated reference signal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103002581A CN103002581A (en) | 2013-03-27 |
| CN103002581B true CN103002581B (en) | 2018-04-03 |
Family
ID=47930572
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110276286.2A Active CN103002581B (en) | 2011-09-16 | 2011-09-16 | Physical Downlink Control Channel bearing method and system based on demodulated reference signal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103002581B (en) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104969642B (en) * | 2013-05-10 | 2019-05-24 | 华为技术有限公司 | A kind of method, user terminal and the base station of determining control channel resource |
| US10003446B2 (en) | 2013-07-08 | 2018-06-19 | Samsung Electronics Co., Ltd. | Method and apparatus for transmitting and receiving data in a communication system using beamforming |
| US9479298B2 (en) * | 2013-07-08 | 2016-10-25 | Intel IP Corporation | Demodulation reference signals (DMRS)for side information for interference cancellation |
| CN104378826B (en) * | 2013-08-14 | 2018-08-07 | 电信科学技术研究院 | A kind of determination of transfer resource, indicating means and terminal, base station |
| CN111800247A (en) * | 2014-05-29 | 2020-10-20 | 华为技术有限公司 | Information transmission method and device |
| CN106209330B (en) | 2015-05-08 | 2019-06-28 | 电信科学技术研究院 | A kind of downlink data repetitive transmission method and equipment |
| US10819465B2 (en) | 2015-12-15 | 2020-10-27 | Huawei Technologies Co., Ltd. | Method for transmitting CSI-RS and base station |
| CN108605337B (en) * | 2016-02-05 | 2020-10-23 | 华为技术有限公司 | Method and equipment for transmitting control signaling |
| CN106209304B (en) * | 2016-06-23 | 2019-01-22 | 重庆邮电大学 | A kind of centralized EPDCCH blind detection method based on PRBs sequence |
| CN107547181B (en) | 2016-06-25 | 2023-10-24 | 华为技术有限公司 | Control information sending method, control information receiving method, network equipment and terminal equipment |
| CN107645355A (en) * | 2016-07-20 | 2018-01-30 | 中兴通讯股份有限公司 | The sending method and device of control channel, method of reseptance and device |
| CN107734656B (en) * | 2016-08-11 | 2023-05-12 | 华为技术有限公司 | Communication method, user equipment and base station |
| CN108809612B (en) * | 2017-07-17 | 2019-06-11 | 华为技术有限公司 | It is used for transmission the method and communication equipment of DMRS |
| CN109274471B (en) | 2017-07-17 | 2024-01-02 | 华为技术有限公司 | Method and communication device for transmitting DMRS |
| CN111865486B (en) * | 2019-04-30 | 2022-04-05 | 大唐移动通信设备有限公司 | Physical Downlink Control Channel (PDCCH) detection method and equipment |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103636151A (en) * | 2011-06-30 | 2014-03-12 | Lg电子株式会社 | Method and apparatus for allocating a downlink control channel in a wireless communication system |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2171880B1 (en) * | 2007-07-19 | 2011-05-11 | InterDigital Technology Corporation | Wireless communication method and apparatus for encoding and decoding beamforming vectors |
| CN102036301B (en) * | 2009-09-29 | 2015-05-20 | 中兴通讯股份有限公司 | Method and device for transmitting downlink demodulation reference signals of relay link and relay system |
-
2011
- 2011-09-16 CN CN201110276286.2A patent/CN103002581B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103636151A (en) * | 2011-06-30 | 2014-03-12 | Lg电子株式会社 | Method and apparatus for allocating a downlink control channel in a wireless communication system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103002581A (en) | 2013-03-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103002581B (en) | Physical Downlink Control Channel bearing method and system based on demodulated reference signal | |
| US12010691B2 (en) | Method and apparatus for transmitting/receiving channels in mobile communication system supporting massive MIMO | |
| US9894645B2 (en) | Method for transmitting control information and base station, and method for receiving control information and user equipment | |
| CN106856426B (en) | A kind of DMRS indicating means, terminal and base station | |
| CN104782206B (en) | Terminal installation, communication means and integrated circuit | |
| CN103988561B (en) | Mobile station apparatus, base station apparatus, communication means and integrated circuit | |
| CN103560870B (en) | For transmitting and receive the method for downlink reference signal, base station and subscriber equipment | |
| AU2010307526B2 (en) | Method and system of multi-layer beamforming | |
| CN102934382B (en) | Control method and the subscriber equipment of the uplink transmission power that detection reference signal sends | |
| CN104769868B (en) | Terminal installation, integrated circuit, wireless communications method and base station apparatus | |
| EP2346201B1 (en) | Method and system for MU-MIMO transmission | |
| US9462594B2 (en) | MIMO transmission method and apparatus for use in wireless communication system | |
| CN107637153A (en) | For dispatching the technology of the data communication lasted with the shortening time | |
| CN110192373A (en) | System and method for selecting or transmitting the frequency domain mode for Phase Tracking reference signal | |
| CN109076053A (en) | Transmission is divided using the order of modulation of uniform constellation | |
| CN101882980A (en) | Method and system for indicating uplink demodulation reference signal | |
| CN104094659A (en) | Wireless base station device, user terminal, wireless communication system, and wireless communication method | |
| CN103581869B (en) | control information processing method and device | |
| CN105850069A (en) | Multi-carrier connection management using bandwidth aggregation for air-ground mobile communication systems | |
| CN105379390B (en) | A kind of method and apparatus of MBSFN configuration | |
| CN106664694A (en) | Terminal device, base station device, communication method and integrated circuit | |
| CN104113914A (en) | Physical multicast channel configuring, transmitting, and receiving method and system | |
| CN112203351B (en) | Method and apparatus in a node used for wireless communication | |
| CN105101423A (en) | Interference processing method, base station, terminal and system | |
| WO2014163027A1 (en) | A method implemented in a base station used in a wireless communications system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |