CN101808403A - Method, base station and terminal for realizing bidirectional data transmission based on CMMB (China Mobile Multimedia Broadcasting) - Google Patents
Method, base station and terminal for realizing bidirectional data transmission based on CMMB (China Mobile Multimedia Broadcasting) Download PDFInfo
- Publication number
- CN101808403A CN101808403A CN200910009007A CN200910009007A CN101808403A CN 101808403 A CN101808403 A CN 101808403A CN 200910009007 A CN200910009007 A CN 200910009007A CN 200910009007 A CN200910009007 A CN 200910009007A CN 101808403 A CN101808403 A CN 101808403A
- Authority
- CN
- China
- Prior art keywords
- resources
- time slots
- cmmb
- uplink
- unit
- 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.)
- Pending
Links
- 230000005540 biological transmission Effects 0.000 title claims abstract description 69
- 238000000034 method Methods 0.000 title claims abstract description 15
- 230000002457 bidirectional effect Effects 0.000 title claims abstract description 12
- 238000013468 resource allocation Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 7
- 238000004891 communication Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Landscapes
- Mobile Radio Communication Systems (AREA)
Abstract
The invention provides a method, a base station and a terminal for realizing the bidirectional data transmission based on CMMB (China Mobile Multimedia Broadcasting). The method comprises the following steps of: configuring resources of N time slots but the first time slot TS0 in the CMMB wireless frame as uplink transmission resources, configuring resources of other time slots as downlink transmission resources, and sending the resource configuration information to the terminal via the first time slot TS0 of the wireless frame. The invention not only can realize that the base station broadcasts multimedia data to each terminal, but also can realize that each terminal sends the multimedia data to the base station, that is the bidirectional transmission of the multimedia data based on CMMB, thereby making fuller use of the advantages of CMMB.
Description
Technical Field
The invention relates to a multimedia mobile communication technology, in particular to a method, a base station and a terminal for realizing bidirectional data transmission based on China Mobile Multimedia Broadcasting (CMMB).
Background
The mobile multimedia broadcasting service refers to a service in which a mobile terminal transmits multimedia data such as digital audio and video in a broadcast form, and has attracted much attention as an emerging multimedia service in the industry.
In the existing China Mobile Multimedia Broadcasting (CMMB) system, a broadcast channel physical layer provides a broadcast channel for an upper service through a physical layer logical channel (PLCH). The PLCH is divided into a Control Logical Channel (CLCH) for carrying broadcast system control information and a Service Logical Channel (SLCH) for carrying broadcast service data. Fig. 1 shows a physical frame structure of a conventional CMMB, and as shown in fig. 1, one physical frame is 1 second and is divided into 40 slots. For a single frequency point mobile multimedia broadcasting system, the physical layer only has one fixed CLCH, and occupies the first time slot TS0 of the physical frame; the number of the SLCHs in each physical layer bandwidth can be 1 to 39, and the SLCHs occupy an integral number of other time slots except TS0 for transmitting the downlink multimedia data.
The CMMB system is a standard and widely used due to its large bandwidth (which can implement 2M or 8M bandwidth), but the current CMMB can only be used for downlink transmission of multimedia data, which makes the advantage of the large bandwidth not fully applicable.
Disclosure of Invention
In view of this, the present invention provides a method, a base station, and a terminal for implementing bidirectional data transmission based on a CMMB, so as to enable uplink multimedia data transmission to be performed by using the CMMB, so that advantages of the CMMB are more fully utilized.
A method for realizing bidirectional data transmission based on CMMB (China Mobile multimedia broadcasting) comprises the following steps:
configuring resources in which N time slots are located in a CMMB wireless frame except a first time slot TS0 as uplink transmission resources, configuring resources in which other time slots are located as downlink transmission resources, and sending resource configuration information to a terminal through the first time slot TS0 of the wireless frame;
wherein N is an integer and is more than or equal to 1 and less than or equal to 39.
A base station for implementing bidirectional data transmission based on CMMB, the base station comprising: a resource allocation unit and an information sending unit;
the resource configuration unit is configured to configure resources, in the CMMB radio frame, in which N time slots are located except for the first time slot TS0, as uplink transmission resources, and resources, in other time slots, are configured as downlink transmission resources; wherein N is an integer and is more than or equal to 1 and less than or equal to 39;
and the information sending unit is used for sending the resource configuration information to the terminal through the first time slot TS0 of the wireless frame according to the configuration result of the resource configuration unit.
A terminal for realizing bidirectional data transmission based on CMMB (China Mobile multimedia broadcasting), which comprises: an information receiving unit and a data transmission unit;
the information acquisition unit is used for acquiring resource configuration information through a first time slot TS0 of the CMMB wireless frame;
and the data transmission unit is used for sending uplink data on resources where N time slots are located except the first time slot TS0 in the CMMB wireless frame according to the resource configuration information acquired by the information acquisition unit, and receiving downlink data on resources where other time slots are located, wherein N is an integer and is more than or equal to 1 and less than or equal to 39.
According to the technical scheme, the base station configures resources where N time slots are located in the CMMB wireless frame except for the first time slot TS0 as uplink transmission resources, configures resources where other time slots are located as downlink transmission resources, and sends resource configuration information to the terminal through the first time slot TS0 of the wireless frame. The base station can broadcast the multimedia data to each terminal, and each terminal can also send the multimedia data to the base station, for example, the camera can send the collected multimedia data to a monitoring center with the function of the base station to monitor the collected audio and video data, or a videophone or a video conference terminal and the like send the collected multimedia data to the base station to forward the multimedia data, so that the multimedia communication with large bandwidth is realized. Obviously, the advantages of the CMMB can be more fully utilized by the invention.
Drawings
FIG. 1 is a diagram of a physical frame structure of a conventional CMMB;
fig. 2 is a configuration structure diagram of a CMMB radio frame resource according to an embodiment of the present invention;
fig. 3 is a diagram of another configuration structure of a CMMB radio frame resource according to an embodiment of the present invention;
fig. 4 is a structural diagram of a base station according to an embodiment of the present invention;
fig. 5 is a diagram of a terminal structure according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
The method provided by the invention mainly comprises the following steps: configuring resources in which N time slots are located in a CMMB wireless frame except a first time slot TS0 as uplink transmission resources, configuring resources in which other time slots are located as downlink transmission resources, and sending resource configuration information to a terminal through the first time slot TS0 of the wireless frame; wherein N is an integer and is more than or equal to 1 and less than or equal to 39.
Correspondingly, the terminal acquires the resource configuration information through the first time slot TS0 of the CMMB radio frame, and according to the resource configuration information, transmits uplink data on resources where N time slots are located in the CMMB radio frame except for the first time slot TS0, and receives downlink data on resources where other time slots are located.
The method is still based on the CMMB system, the structure of the CMMB wireless frame is used, 40 time slots in the original CMMB wireless frame are all downlink transmission resources, and the first time slot TS0 in the CMMB wireless frame is still fixedly configured as a downlink CLCH for bearing downlink control information. In the present invention, the downlink control information may include: the resource configuration information is time slot information configured as downlink transmission resources and time slot information configured as uplink transmission resources.
In addition, in the N timeslots configured as the uplink transmission resource, one timeslot may be configured to carry an uplink control channel, and each terminal performs transmission of control information on the uplink control channel.
For example, as shown in fig. 2, a resource where TS0 is located may be fixedly configured as a downlink transmission resource, and resources where TS1 to TS20 are located are configured as an uplink transmission resource, where TS1 may be used to carry uplink control information, TS2 to TS20 may be used to carry uplink service data, resources where TS21 to TS39 are located are configured as a downlink transmission resource, and a base station may carry the resource configuration information in TS0 for broadcast transmission, where the resource configuration information may specifically be: uplink and downlink switching points, channel allocation information, adjustment parameter information of a physical layer, uplink random access information and the like.
The uplink and downlink switching point refers to a switching point of the uplink transmission resource and the downlink transmission resource in terms of time, and in fig. 2, the uplink and downlink switching point is a junction of the TS20 and the TS 21; the channel allocation information refers to channel information specifically carried by each time slot; the adjustment parameter information of the physical layer is information used for performing synchronization adjustment or power adjustment and the like between the terminal and the base station, such as transmission advance Time (TA), TPC and the like; the uplink random access information refers to resource information used for each terminal to perform uplink random access in configured uplink transmission resources, for example, some Orthogonal Frequency Division Multiplexing (OFDM) symbols of TS1 may be fixedly used for the terminal to perform uplink random access sequence transmission, or fixed OFDM symbols in each time slot used for uplink transmission may be fixedly used for the terminal to perform uplink random access sequence transmission, that is, set OFDM symbols in M time slots may be configured to carry uplink random access sequences in N configured time slots used for uplink transmission, where M is an integer and is greater than or equal to 1 and less than or equal to N. Accordingly, the terminal transmits an uplink random access sequence on the set OFDM symbol in the M slots to access the base station.
As shown in fig. 3, an upward thick arrow in fig. 3 represents an uplink timeslot, and a downward thick arrow represents a downlink timeslot, that is, resources in odd timeslots in the CMMB radio frame may be configured as downlink transmission resources, and resources in even timeslots may be configured as uplink transmission resources. Of course, other configuration manners may also be adopted, for example, according to the actual resource usage requirement, assuming that only one timeslot is needed to meet the requirement of uplink transmission, only one timeslot may be configured for uplink transmission, for example, only the resource where the TS1 is located may be configured as an uplink transmission resource. Other configurations are also used, and are not described in detail herein.
The above is a description of the method provided by the present invention, and the following is a detailed description of the base station and the terminal provided by the present invention, respectively.
Fig. 4 is a structural diagram of a base station according to an embodiment of the present invention, and as shown in fig. 4, the base station may include: a resource configuration unit 401 and an information transmission unit 402.
A resource configuration unit 401, configured to configure resources, in the CMMB radio frame, in which N time slots are located except for a first time slot TS0, as uplink transmission resources, and resources, in other time slots, are configured as downlink transmission resources; wherein N is an integer and is more than or equal to 1 and less than or equal to 39.
An information sending unit 402, configured to send the resource configuration information to the terminal through the first timeslot TS0 of the radio frame according to the configuration result of the resource configuration unit 401.
In addition, the base station may further include: a resource determining unit 403, configured to determine a value of N according to a predetermined fixed configuration, or determine a value of N according to an actual uplink multimedia data transmission requirement, and provide the determined value of N to the resource configuring unit 401.
Furthermore, the resource allocation unit 401 may be further configured to allocate, in N time slots, the set OFDM symbols in M time slots to carry the uplink random access sequence, where M is an integer and is greater than or equal to 1 and less than or equal to N.
Fig. 5 is a structural diagram of a terminal according to an embodiment of the present invention, and as shown in fig. 5, the terminal may include: an information receiving unit 501 and a data transmitting unit 502.
An information obtaining unit 501, configured to obtain the resource configuration information through a first timeslot TS0 of the CMMB wireless frame.
A data transmission unit 502, configured to send uplink data on resources where N time slots are located in the CMMB wireless frame except for the first time slot TS0 according to the resource configuration information acquired by the information acquisition unit 501, and receive downlink data on resources where other time slots are located, where N is an integer and N is greater than or equal to 1 and less than or equal to 39.
The uplink data may be uplink control information or uplink multimedia service data.
Still further, the terminal may further include: a random access unit 503, configured to send an uplink random access sequence in a set OFDM symbol of M time slots set in N time slots according to the resource configuration information acquired by the information acquisition unit 501, where M is an integer and is greater than or equal to 1 and less than or equal to N.
As can be seen from the above description, in the present invention, the base station configures resources in which N slots are located in the CMMB radio frame, except for the first slot TS0, as uplink transmission resources, configures resources in which other slots are located as downlink transmission resources, and sends resource configuration information to the terminal through the first slot TS0 of the radio frame. The base station can broadcast the multimedia data to each terminal, and each terminal can also send the multimedia data to the base station, for example, the camera can send the collected multimedia data to a monitoring center with the function of the base station to monitor the collected audio and video data, or a videophone or a video conference terminal and the like send the collected multimedia data to the base station to forward the multimedia data, so that the multimedia communication with large bandwidth is realized. Obviously, the advantages of the CMMB can be more fully utilized by the invention.
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 (10)
1. A method for realizing bidirectional data transmission based on China Mobile Multimedia Broadcasting (CMMB) is characterized by comprising the following steps:
configuring resources in which N time slots are located in a CMMB wireless frame except a first time slot TS0 as uplink transmission resources, configuring resources in which other time slots are located as downlink transmission resources, and sending resource configuration information to a terminal through the first time slot TS0 of the wireless frame;
wherein N is an integer and is more than or equal to 1 and less than or equal to 39.
2. The method of claim 1, wherein N is a predetermined fixed configuration, or is determined by the base station according to an actual uplink multimedia data transmission requirement.
3. The method according to claim 1, wherein the configuring specifically comprises: configuring resources of second time slots TS1 to twenty-first time slots TS20 in the wireless frame as uplink transmission resources, configuring resources of twenty-second time slots TS21 to forty-first time slots TS39 as downlink transmission resources, and fixedly using the first time slots TS0 for transmission of downlink control information; or,
and configuring resources where odd time slots are located in the wireless frame as downlink transmission resources, and configuring resources where even time slots are located as uplink transmission resources, wherein the first time slot TS0 is fixedly used for transmission of downlink control information.
4. The method of claim 1, wherein the resource configuration information comprises: uplink and downlink switching points, channel allocation information, adjustment parameter information of a physical layer and uplink random access information.
5. The method of claim 1, wherein a set OFDM symbol in M slots is configured in the N slots for carrying an uplink random access sequence, wherein M is an integer and 1 ≦ M ≦ N.
6. A base station for implementing bidirectional data transmission based on CMMB, the base station comprising: a resource allocation unit and an information sending unit;
the resource configuration unit is configured to configure resources, in the CMMB radio frame, in which N time slots are located except for the first time slot TS0, as uplink transmission resources, and resources, in other time slots, are configured as downlink transmission resources; wherein N is an integer and is more than or equal to 1 and less than or equal to 39;
and the information sending unit is used for sending the resource configuration information to the terminal through the first time slot TS0 of the wireless frame according to the configuration result of the resource configuration unit.
7. The base station of claim 6, further comprising: and the resource determining unit is used for determining the value of the N according to a preset fixed configuration, or determining the value of the N according to the actual uplink multimedia data transmission requirement, and providing the determined value of the N to the resource configuring unit.
8. The base station of claim 6, wherein the resource allocation unit is further configured to allocate, in the N slots, set OFDM symbols in M slots for carrying uplink random access sequences, where M is an integer and is greater than or equal to 1 and less than or equal to N.
9. A terminal for realizing bidirectional data transmission based on CMMB (China Mobile multimedia broadcasting), which is characterized by comprising: an information receiving unit and a data transmission unit;
the information acquisition unit is used for acquiring resource configuration information through a first time slot TS0 of the CMMB wireless frame;
and the data transmission unit is used for sending uplink data on resources where N time slots are located except the first time slot TS0 in the CMMB wireless frame according to the resource configuration information acquired by the information acquisition unit, and receiving downlink data on resources where other time slots are located, wherein N is an integer and is more than or equal to 1 and less than or equal to 39.
10. The terminal of claim 9, further comprising: and the random access unit is used for sending an uplink random access sequence in the set OFDM symbols of M time slots set in the N time slots according to the resource configuration information acquired by the information acquisition unit, wherein M is an integer and is more than or equal to 1 and less than or equal to N.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910009007A CN101808403A (en) | 2009-02-12 | 2009-02-12 | Method, base station and terminal for realizing bidirectional data transmission based on CMMB (China Mobile Multimedia Broadcasting) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910009007A CN101808403A (en) | 2009-02-12 | 2009-02-12 | Method, base station and terminal for realizing bidirectional data transmission based on CMMB (China Mobile Multimedia Broadcasting) |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101808403A true CN101808403A (en) | 2010-08-18 |
Family
ID=42609962
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910009007A Pending CN101808403A (en) | 2009-02-12 | 2009-02-12 | Method, base station and terminal for realizing bidirectional data transmission based on CMMB (China Mobile Multimedia Broadcasting) |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101808403A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102075704A (en) * | 2010-12-30 | 2011-05-25 | 北京牡丹电子集团有限责任公司 | Transmitting equipment combined concrete rectangular open caisson basin of CMMB (China Mobile Multimedia Broadcasting) mobile video transmission system and construction method thereof |
| CN102149016A (en) * | 2010-12-30 | 2011-08-10 | 北京牡丹电子集团有限责任公司 | Receiving device for CMMB (China mobile multimedia broadcasting) mobile video transmission system |
| CN102340693A (en) * | 2011-03-23 | 2012-02-01 | 重庆三峡学院 | Method for pushing information in CMMB (China Mobile Multimedia Broadcasting) |
| CN102594438A (en) * | 2011-01-13 | 2012-07-18 | 中兴通讯股份有限公司 | Data transmission method, device and system |
-
2009
- 2009-02-12 CN CN200910009007A patent/CN101808403A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102075704A (en) * | 2010-12-30 | 2011-05-25 | 北京牡丹电子集团有限责任公司 | Transmitting equipment combined concrete rectangular open caisson basin of CMMB (China Mobile Multimedia Broadcasting) mobile video transmission system and construction method thereof |
| CN102149016A (en) * | 2010-12-30 | 2011-08-10 | 北京牡丹电子集团有限责任公司 | Receiving device for CMMB (China mobile multimedia broadcasting) mobile video transmission system |
| CN102594438A (en) * | 2011-01-13 | 2012-07-18 | 中兴通讯股份有限公司 | Data transmission method, device and system |
| CN102594438B (en) * | 2011-01-13 | 2017-03-15 | 中兴通讯股份有限公司 | Data transmission method, apparatus and system |
| CN102340693A (en) * | 2011-03-23 | 2012-02-01 | 重庆三峡学院 | Method for pushing information in CMMB (China Mobile Multimedia Broadcasting) |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20210258933A1 (en) | Electronic device and method for transmitting pdcch and pdsch information | |
| US11129153B2 (en) | Telecommunications systems and methods for machine type communication | |
| CN101202585B (en) | Radio communication base station, terminal and method for obtaining system information | |
| CN1951038B (en) | Method and system for transmitting and receiving broadcast service data in a wireless communication system | |
| US8179829B2 (en) | Delivery of multicast and uni-cast services in an OFDMA system | |
| CN101784121B (en) | Random access method, device and system | |
| KR20150013543A (en) | Method and terminal device for allocating resources in a plurality of subframes | |
| CN105453476B (en) | Telecommunications apparatus and method | |
| KR20150013542A (en) | System, method and base station for allocating resources in a plurality of sub-frames | |
| US10681623B2 (en) | Methods and apparatus for cell access via anchor carrier | |
| CN110971377B (en) | Data transmission method and device | |
| CN101868027A (en) | Configuration and sending method of uplink signal transmission resource, base station and user terminal | |
| CN107046720B (en) | Low-delay service transmission method, related equipment and system | |
| WO2018037599A1 (en) | System and methods for realising adaptive radio access technology in 5g wireless communication system | |
| KR101520205B1 (en) | Base-station device, mobile-station device, wireless-communication method, and wireless-communication system | |
| CN114828249A (en) | Method and apparatus in a node used for wireless communication | |
| US8599818B2 (en) | Apparatus and method for employing common control channel and broadcast channel in a broadband wireless communication system with frequency overlay | |
| CN101389053B (en) | Multimedia broadcast multicast service transmission method and system | |
| CN101808403A (en) | Method, base station and terminal for realizing bidirectional data transmission based on CMMB (China Mobile Multimedia Broadcasting) | |
| EP2640107A1 (en) | Wireless communication system, communication control device, base station, and wireless communication method | |
| CN108282893B (en) | Transmission method, receiving method, base station and user equipment of common control message | |
| JP5267125B2 (en) | Measurable bandwidth support method and system | |
| KR20220034824A (en) | Method, apparatus and storage medium for indicating channel state in unlicensed spectrum | |
| US20240048303A1 (en) | Communications devices, network infrastructure equipment, wireless communications networks and methods | |
| CN109936873B (en) | Method and device for configuring timing advance |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20100818 |