CN106209713A - A kind of demodulation method in radio communication - Google Patents
A kind of demodulation method in radio communication Download PDFInfo
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- CN106209713A CN106209713A CN201510226475.7A CN201510226475A CN106209713A CN 106209713 A CN106209713 A CN 106209713A CN 201510226475 A CN201510226475 A CN 201510226475A CN 106209713 A CN106209713 A CN 106209713A
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- frequency pilot
- pilot sign
- level frequency
- ofdm symbol
- point
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Abstract
The present invention proposes a kind of pilot design method, including: over a slot, use polymorphic type frequency pilot sign；Different types of frequency pilot sign covers the region of different stage.The present invention can support point-to-multipoint service and point to point service, PTP in one time slot simultaneously, thus improves wireless resource utility efficiency.
Description
Technical field
The present invention relates to wireless communication field, particularly relate to the demodulation method in a kind of radio communication.
Background technology
Mobile service is divided into point to point service, PTP (such as unicast service) and point-to-multipoint service (such as broadcast group
Broadcast business, group-calling service).
3GPP is studying employing eMBMS (enhanced multimedia broadcast multicast service, enhanced
Multimedia Broadcast Multicast Service) machine-processed for trunking communication.So can utilize
EMBMS technology can solve the problem that co-frequency cell marginal interference is serious well.
The problem of eMBMS technology is: in one time slot, if eMBMS business the most all makes to be finished
RB (Resource Block) resource, remaining RB resource can not be used for other business (such as point-to-point industry
Business).
Summary of the invention
For the problems referred to above, the demodulation method in a kind of radio communication of the present invention, including: between the transmission time
In every, receive different types of frequency pilot sign based on type of service；Use the frequency pilot sign received to described
Business datum is demodulated.
Preferably, when described type of service is point-to-multipoint service, receives multiple cell level frequency pilot sign, make
With the multiple cell level frequency pilot sign received, described point-to-multipoint service is demodulated.Or, when described industry
When service type is point-to-multipoint service, receive multiple cell level frequency pilot sign and single cell-level frequency pilot sign simultaneously；
Use the multiple cell level frequency pilot sign received and single cell-level frequency pilot sign that described point-to-multipoint service is entered
Row demodulation.
Preferably, the OFDM symbol of described point-to-multipoint service subframe includes two classes: I class OFDM accords with
Number and II class OFDM symbol；Described I class OFDM symbol includes: comprise single cell-level frequency pilot sign
OFDM symbol；Described II class OFDM symbol includes: comprise the OFDM symbol of multiple cell level frequency pilot sign
Number, and neither comprise single cell-level frequency pilot sign and the most do not comprise the OFDM symbol of multiple cell level frequency pilot sign.
Further, described demodulation specifically includes: equal to I class OFDM symbol and II class OFDM symbol
Multiple cell level frequency pilot sign is used to be demodulated；Or, described I class OFDM symbol is used on this symbol
Single cell-level frequency pilot sign be demodulated；Described II class OFDM symbol is used multiple cell level pilot tone symbol
Number it is demodulated；Or, use the list on this symbol little the portion subcarriers of described I class OFDM symbol
District's level frequency pilot sign is demodulated；To its of described II class OFDM symbol and described I class OFDM symbol
Remaining sub-carriers uses multiple cell level frequency pilot sign to be demodulated.
Further, also include: the multiple cell level frequency pilot sign received described in use generates channel and estimates.
Or, use multiple cell level frequency pilot sign and single cell-level frequency pilot sign to generate channel and estimate.
Preferably, also include: when described type of service is point to point service, PTP, receive single cell-level pilot tone symbol
Number, use the described single cell-level frequency pilot sign received that described point to point service, PTP is demodulated.Further
, use described in single cell-level frequency pilot sign of receiving generate channel and estimate.
The method that the present invention proposes can support point-to-multipoint service and point-to-point industry in a TTI simultaneously
Business, thus improve wireless resource utility efficiency.
Accompanying drawing explanation
Fig. 1 is the pilot symbol distribution schematic diagram of embodiment 1；
Fig. 2 is the pilot symbol distribution schematic diagram of embodiment 2；
Fig. 3 is the cell topology schematic diagram of embodiment 3；
Fig. 4 is the c0 pilot symbol distribution schematic diagram of embodiment 3；
Fig. 5 is the c1 pilot symbol distribution schematic diagram of embodiment 3；
Fig. 6 is the c2 pilot symbol distribution schematic diagram of embodiment 3.
Detailed description of the invention
For making the purpose of the embodiment of the present invention, technical scheme and advantage clearer, below in conjunction with the present invention
Accompanying drawing in embodiment, is clearly and completely described the technical scheme in the embodiment of the present invention, it is clear that
Described embodiment is a part of embodiment of the present invention rather than whole embodiments；It should be noted that
In the case of not conflicting, the embodiment in the application and the feature in embodiment can be mutually combined.Based on
Embodiment in the present invention, those of ordinary skill in the art are obtained under not making creative work premise
Every other embodiment, broadly fall into the scope of protection of the invention.
Embodiment 1
In same community, different types of service uses different frequency pilot sign types.Point-to-multipoint service
(order is business 1) uses B class frequency pilot sign, point to point service, PTP (order is business 2) to use A class pilot tone
Symbol.In some TTI, RB (Resource Block) resource that base station is dispatched to business 1 is
RBNum1；It is RBNum2 to the RB resource of business 2 scheduling.The whole community of A class pilot symbol distribution
Band alleviating distention in middle-JIAO, B class frequency pilot sign is only distributed in the resource of RBNum1.As shown in Figure 1.
End side:
For business 1:
Use B class frequency pilot sign demodulation business 1 data in RBNum1；Use the B in RBNum1
Class frequency pilot sign generates channel and estimates.Or,
Use the B class frequency pilot sign in RBNum1 and A class frequency pilot sign demodulation business 1 data, specifically
For: in RBNum1, B class frequency pilot sign is for demodulating the II class of the business 1 of data field in RBNum1
OFDM symbol, it may be assumed that OFDM symbol 2,3,5,6,8,9,10,12 and 13；In RBNum1
A class frequency pilot sign is for demodulating the I class OFDM symbol of the business 1 of data field in RBNum1, it may be assumed that
OFDM symbol 4,7 and 11.Use the B class frequency pilot sign in RBNum1 and A class frequency pilot sign raw
Channel is become to estimate.Or, in RBNum1, A class frequency pilot sign is for demodulating data field in RBNum1
The portion subcarriers of the I class OFDM symbol of business 1, it may be assumed that the part of OFDM symbol 4,7 and 11
Subcarrier；In RBNum1, B class frequency pilot sign is for demodulating the II of the business 1 of data field in RBNum1
Class OFDM symbol, and its remaining sub-carriers of I class OFDM symbol, it may be assumed that OFDM symbol 2,3,5,
6,8,9,10,12 and 13, and its remaining sub-carriers of OFDM symbol 4,7 and 11；Use RBNum1
In B class frequency pilot sign and A class frequency pilot sign generate channel estimate.
For business 2:
Use the A class frequency pilot sign in RBNum2 to generate channel to estimate, and be used for demodulating in RBNum2
Business 2 data of data field.
Embodiment 2:
In same community, different types of service uses different frequency pilot sign types.Point-to-multipoint service
(order is business 1) uses B class frequency pilot sign, point to point service, PTP (order is business 2) to use A class pilot tone
Symbol.In some TTI, base station is RBNum1 to the RB resource that business 1 is dispatched；Adjust to business 2
The RB resource of degree is RBNum2.A class pilot symbol distribution in the resource of RBNum2, B class pilot tone
Symbol is distributed in the resource of RBNum1.As shown in Figure 2.
End side:
For business 1:
Use the B class frequency pilot sign in RBNum1 for demodulating business 1 number of data field in RBNum1
According to；Use the B class frequency pilot sign in RBNum1 to generate channel to estimate.
For business 2:
Use business 2 data of data field in the A class frequency pilot sign demodulation RBNum2 in RBNum2；
Use the A class frequency pilot sign in RBNum2 to generate channel to estimate.
Embodiment 3:
Community c0 and c1 is the community sending point-to-multipoint service 1, wherein, receives business 1 in the c0 of community
Terminal be UE00 and UE01, in the c1 of community receive business 1 terminal be UE10 and UE11.Community
C2 is that UE20 sends point to point service, PTP 2.As shown in Figure 3.
The A class frequency pilot sign of community c0 and B class pilot symbol distribution are as shown in Figure 4；The A of community c1
Class frequency pilot sign and B class pilot symbol distribution are as shown in Figure 5；The A class pilot symbol distribution of community c2 is such as
Shown in Fig. 6.
UE00 and UE01 in the c0 of community: use the business in B class frequency pilot sign demodulating data territory
1 data；Use B class frequency pilot sign to generate channel to estimate.
UE10 and UE11 in the c1 of community: use the business in B class frequency pilot sign demodulating data territory
1 data；Use B class frequency pilot sign to generate channel to estimate.
UE20 in the c2 of community: use business 2 data in A class frequency pilot sign demodulating data territory；
Use A class frequency pilot sign to generate channel to estimate.
One of ordinary skill in the art will appreciate that: all or part of step realizing said method embodiment can
Completing with the hardware relevant by programmed instruction, aforesaid program can be stored in an embodied on computer readable and deposit
In storage media, this program upon execution, performs to include the step of said method embodiment；And aforesaid storage
Medium includes: the various media that can store program code such as ROM, RAM, magnetic disc or CD.
Last it is noted that above example is only in order to illustrate technical scheme, rather than it is limited
System；Although the present invention being described in detail with reference to previous embodiment, those of ordinary skill in the art
It is understood that the technical scheme described in foregoing embodiments still can be modified by it, or to it
Middle part technical characteristic carries out equivalent；And these amendments or replacement, do not make appropriate technical solution
Essence departs from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (12)
1. the demodulation method in a radio communication, it is characterised in that including:
In Transmission Time Interval, receive different types of frequency pilot sign based on type of service；
Use the frequency pilot sign received that described business datum is demodulated.
Method the most according to claim 1, it is characterised in that when described type of service for point to many
During point business, receive multiple cell level frequency pilot sign, use the multiple cell level frequency pilot sign received to described point
It is demodulated to multipoint service.
Method the most according to claim 2, it is characterised in that described point-to-multipoint service subframe
OFDM symbol includes two classes: I class OFDM symbol and II class OFDM symbol；
Described I class OFDM symbol includes: comprise the OFDM symbol of single cell-level frequency pilot sign；
Described II class OFDM symbol includes: comprise the OFDM symbol of multiple cell level frequency pilot sign, and both
Do not comprise single cell-level frequency pilot sign and the most do not comprise the OFDM symbol of multiple cell level frequency pilot sign.
Method the most according to claim 3, it is characterised in that the multiple cell that described use receives
Described point to point service, PTP is demodulated specifically including by level frequency pilot sign: to I class OFDM symbol and II class
OFDM symbol all uses multiple cell level frequency pilot sign to be demodulated.
5. according to the method described in claim 2 or 4, it is characterised in that also include:
The multiple cell level frequency pilot sign received described in using generates channel and estimates.
Method the most according to claim 1, it is characterised in that when described type of service for point to many
During point business, receive multiple cell level frequency pilot sign and single cell-level frequency pilot sign simultaneously；Use receives many
Described point-to-multipoint service is demodulated by cell-level frequency pilot sign and single cell-level frequency pilot sign.
Method the most according to claim 6, it is characterised in that described point-to-multipoint service subframe
OFDM symbol includes two classes: I class OFDM symbol and II class OFDM symbol；
Described I class OFDM symbol includes: comprise the OFDM symbol of single cell-level frequency pilot sign；
Described II class OFDM symbol includes: comprise the OFDM symbol of multiple cell level frequency pilot sign, and both
Do not comprise single cell-level frequency pilot sign and the most do not comprise the OFDM symbol of multiple cell level frequency pilot sign.
Method the most according to claim 7, it is characterised in that the multiple cell that described use receives
Described point-to-multipoint service is demodulated by level frequency pilot sign and single cell-level frequency pilot sign, specifically includes:
The single cell-level frequency pilot sign on this symbol is used to be demodulated described I class OFDM symbol；To institute
Stating II class OFDM symbol uses multiple cell level frequency pilot sign to be demodulated.
Method the most according to claim 7, it is characterised in that the multiple cell that described use receives
Described point-to-multipoint service is demodulated by level frequency pilot sign and single cell-level frequency pilot sign, specifically includes:
The single cell-level frequency pilot sign on this symbol is used to enter the portion subcarriers of described I class OFDM symbol
Row demodulation；Its remaining sub-carriers of described II class OFDM symbol and described I class OFDM symbol is used many
Cell-level frequency pilot sign is demodulated.
10. according to the method described in claim 6,8,9 any one, it is characterised in that also include:
Use multiple cell level frequency pilot sign and single cell-level frequency pilot sign to generate channel to estimate.
11. according to the method described in claim 1,2,6, it is characterised in that also include:
When described type of service is point to point service, PTP, receive single cell-level frequency pilot sign,
Use the described single cell-level frequency pilot sign received that described point to point service, PTP is demodulated.
12. methods according to claim 11, it is characterised in that also include:
The single cell-level frequency pilot sign received described in using generates channel and estimates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510226475.7A CN106209713A (en) | 2015-05-06 | 2015-05-06 | A kind of demodulation method in radio communication |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510226475.7A CN106209713A (en) | 2015-05-06 | 2015-05-06 | A kind of demodulation method in radio communication |
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| Publication Number | Publication Date |
|---|---|
| CN106209713A true CN106209713A (en) | 2016-12-07 |
Family
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| CN201510226475.7A Withdrawn CN106209713A (en) | 2015-05-06 | 2015-05-06 | A kind of demodulation method in radio communication |
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Citations (7)
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|---|---|---|---|---|
| CN101043496A (en) * | 2006-03-20 | 2007-09-26 | 华为技术有限公司 | Method and apparatus for multiplexing different service pilot resources of multi-carrier communication system |
| CN101098159A (en) * | 2006-06-27 | 2008-01-02 | 上海贝尔阿尔卡特股份有限公司 | Method and apparatus for transmitting and receiving evolved multimedia broadcast and multicast service data |
| CN101222263A (en) * | 2007-01-10 | 2008-07-16 | 上海贝尔阿尔卡特股份有限公司 | Method and device for mapping pilot signal in unicast and broadcast/multicast mode |
| CN101283533A (en) * | 2005-10-07 | 2008-10-08 | 松下电器产业株式会社 | Wireless communication base station device and pilot transmitting method |
| CN101371543A (en) * | 2005-09-30 | 2009-02-18 | Lg电子株式会社 | A method for transmitting and receiving data using a plurality of carriers |
| CN101394262A (en) * | 2007-09-18 | 2009-03-25 | 上海华为技术有限公司 | Pilot transmission method and device in OFDM system |
| CN101755397A (en) * | 2007-06-18 | 2010-06-23 | 上海贝尔股份有限公司 | A method and device for pilot mapping in multiplexing mode of unicast and broadcast/multicast services |
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2015
- 2015-05-06 CN CN201510226475.7A patent/CN106209713A/en not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101371543A (en) * | 2005-09-30 | 2009-02-18 | Lg电子株式会社 | A method for transmitting and receiving data using a plurality of carriers |
| CN101283533A (en) * | 2005-10-07 | 2008-10-08 | 松下电器产业株式会社 | Wireless communication base station device and pilot transmitting method |
| CN101043496A (en) * | 2006-03-20 | 2007-09-26 | 华为技术有限公司 | Method and apparatus for multiplexing different service pilot resources of multi-carrier communication system |
| CN101098159A (en) * | 2006-06-27 | 2008-01-02 | 上海贝尔阿尔卡特股份有限公司 | Method and apparatus for transmitting and receiving evolved multimedia broadcast and multicast service data |
| CN101222263A (en) * | 2007-01-10 | 2008-07-16 | 上海贝尔阿尔卡特股份有限公司 | Method and device for mapping pilot signal in unicast and broadcast/multicast mode |
| CN101755397A (en) * | 2007-06-18 | 2010-06-23 | 上海贝尔股份有限公司 | A method and device for pilot mapping in multiplexing mode of unicast and broadcast/multicast services |
| CN101394262A (en) * | 2007-09-18 | 2009-03-25 | 上海华为技术有限公司 | Pilot transmission method and device in OFDM system |
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Application publication date: 20161207 |