CN102209308A - Control information transmission method and device - Google Patents

Abstract

The present invention discloses a control information transmission method and its device. The method of the present invention includes the steps: a relay node device with a general network identifier uses the general network identifier configured by the relay node device to receive a message sent by the network side at a specified time. For control signaling, the common network identifier is the same network identifier possessed by multiple relay node devices; the relay node device obtains the control information carried therein by decoding the control signaling. The present invention can solve the problem of low transmission efficiency when sending control information of the same content to multiple relay node devices in the prior art.

Description

A method and device for transmitting control information

technical field

The present invention relates to the field of wireless communication, in particular to a method for transmitting control information, a relay node device and a base station device.

Background technique

In the LTE (Long Term Evolution, Long Term Evolution) Release 10 version, the relay node (Relay Node, RN) will be introduced into the network as an important means to expand system coverage and improve system capacity. Since the RN is similar to a DeNB (base station) in the Release10 network, as shown in Figure 1, the RN has its own independent Physical Cell id (physical cell ID).

At present, in the design scheme for RN to receive information sent by DeNB, the backhaul link (or backhaul link) between RN and the network side is the MBSFN (Multicast/Broadcast over Single Frequency Network, Single Frequency Network) that has been set in the system. multicast broadcast) subframe, as shown in FIG. 2 , so the RN cannot and cannot receive the broadcast message of the DeNB in the downlink broadcast time slot of the DeNB. For RNs that need to send specific broadcast information, according to the current design scheme, the DeNB needs to notify each RN separately through dedicated signaling.

In the process of realizing the present invention, the inventor found that the above prior art has at least the following defects:

When the DeNB controls multiple RNs, the above solution is inefficient, because the control information of the same content that needs to be sent to each RN needs to be transmitted by the DeNB n times before it can be sent to n RNs, and when the system deploys the MBMS service (Multimedia Broadcast Multicast Service), the RRC (Radio Resource Control, Radio Resource Control) signaling information related to MBMS transmission is the same for each RN, and needs to be sent to each RN separately, which will affect DeNB Transmission efficiency of link (backhaul) resources with RN.

Contents of the invention

Embodiments of the present invention provide a control information transmission method, a relay node device, and a base station device, so as to solve the problem of low transmission efficiency when sending control information to the relay node device in the prior art.

The method for transmitting control information provided by the embodiment of the present invention includes:

The relay node device with the universal network identifier uses the universal network identifier configured by the relay node device to receive the control signaling sent by the network side at a specified time, and the universal network identifier is the same one owned by multiple relay node devices network identification;

The relay node device obtains the control information carried therein by decoding the control signaling.

The relay node device provided by the embodiment of the present invention includes:

The receiving module is configured to use the universal network identifier configured by the relay node device to receive the control signaling sent by the network side at a specified time, where the universal network identifier is the same network identifier possessed by multiple relay node devices;

The parsing module is configured to decode the control signaling received by the receiving module to obtain the control information carried therein.

The base station equipment provided by the embodiment of the present invention includes:

The signaling processing module is configured to carry the control information sent by the relay node device with a common network identifier in the control signaling, and the universal network identifier is the same network identifier possessed by multiple relay node devices;

A sending module, configured to use the universal network identifier of the relay node device to send the control signaling at a specified time.

In the above embodiments of the present invention, by using the general network identifier to send control signaling carrying control information to the relay node device with the general network identifier, the relay node device configured with the general network identifier can simultaneously receive the The control signaling is further analyzed to obtain the control information carried therein. Usually, the universal network identifier can be configured on multiple relay node devices, and the universal network identifiers configured on these relay node devices are the same, therefore, the relay node device with the universal network identifier can receive the The control signaling carrying the control information is sent by identification, instead of sending the control signaling carrying the same control information for each relay node device separately on the network side, thereby reducing the system resource overhead and improving the control information compared with the existing technology. transmission efficiency.

Description of drawings

Fig. 1 is a schematic diagram of LTE Release 10 network architecture introducing RN in the prior art;

FIG. 2 is a schematic diagram of a backhaul link between an RN and a DeNB in the prior art;

Fig. 3 is a schematic diagram of DeNB configuring C-RNTI and R-RNTI for RN in the embodiment of the present invention;

FIG. 4 is a schematic flow diagram of transmitting control information to the RN based on the universal network identifier of the RN in an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a relay node device provided by an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a base station device provided by an embodiment of the present invention.

Detailed ways

In order to solve the above-mentioned problems in the prior art, the embodiment of the present invention provides a technical solution for transmitting control information to RNs, by assigning a common network identifier to multiple RNs, and using the common network identifier to send The control information enables multiple RNs under the control of the DeNB to receive the control information, thereby improving the transmission efficiency of the backhaul link, and further improving the utilization rate of backhaul resources.

In the embodiment of the present invention, the control information that needs to be sent to the RN refers to information with the same content that needs to be sent to each target RN, and the control information can include one or any combination of the following:

Part of the system control signaling information, including radio resource configuration information, or/and the content of SIB (system broadcast message) 13, or/and other system broadcast message content related to RN;

MBSFN area configuration information, including MBSFN area ID, session (session) information, PMCH (Physical Multicast Channel, physical multicast channel) allocation information content;

Other control signaling information that needs to be sent to the RN.

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the embodiments of the present invention.

In the embodiment of the present invention, the RN is configured with two network identifiers (RNTI), one is a dedicated network identifier for each RN, which is used to uniquely identify an RN, such as C-RNTI, or other identifiers that can distinguish the RN; One is a network identifier shared by multiple RNs, which can identify multiple (or a group of) RNs, such as R-RNTI, that is, multiple RNs have the same R-RNTI. These two network identifiers can be configured by the network side (such as DeNB) when the RN accesses the system (or at any time after access), or obtained from the network side in other ways, or manually before accessing the system, or the system The specified method, or other methods are pre-configured into the RN.

Fig. 3 shows the process of configuring the dedicated network identifier (C-RNTI) and general network identifier (R-RNTI) allocated for the RN to the RN by the DeNB when the RN accesses the system. As shown in the figure, when an RN accesses the system, the DeNB may send the C-RNTI and R-RNTI allocated to the RN to the RN through dedicated control signaling. Among them, DeNB can allocate C-RNTI and R-RNTI to RN through one configuration, that is, send the C-RNTI and R-RNTI allocated to RN to RN through one signaling, or allocate C-RNTI and R-RNTI to RN through two separate configurations. - RNTI and R-RNTI, that is, send the C-RNTI allocated to the RN to the RN through one signaling, and then send the R-RNTI allocated to the RN to the RN through one signaling.

After the RN is configured with a dedicated network identifier and a general network identifier, it can use the dedicated network identifier to receive control information or data information sent by the network side for the RN, or use the dedicated network identifier to send control information or data information related to the RN to the network side. The RN may also use the common network identifier to receive the control information of the same content sent by the DeNB for the RN and other RNs configured with the universal network identifier.

Among them, based on the RN's dedicated network identifier, the communication process between the RN and the network side can be realized according to the existing information transmission mechanism between the RN and the network side; based on the RN's general network identifier, the information transmission method between the RN and the network side can be : The DeNB carries the control information of the same content that needs to be sent to multiple RNs in the control signaling, and uses the general network identifier of the RN to send the control signaling at a specified time, and the RN configured with the general network identifier uses it at the specified time The universal network identifier receives the control signaling, so as to obtain the control information carried therein.

Figure 4 shows a process of transmitting control information to the RN based on the RN's universal network identifier, where the RN under the control of the DeNB has been configured with a universal network identifier (R-RNTI), when the network side needs to send all When RNs send control information with the same content, if it is necessary to send MBSFN area configuration information to these RNs, as shown in the figure, the process may include:

Step 401, the DeNB carries the MBSFN area configuration information to be sent in the control signaling, and uses the R-RNTI of the RN to send the control signaling.

In this step, the DeNB can use the R-RNTI of the RN to scramble the control signaling, and send the control signaling in the designated time slot of the MBSFN subframe. The control signaling can be PDCCH (PhysicalDownlink Control Channel, physical downlink control channel) signaling, or MAC (MediaAccess Control, media access control) layer signaling, or RRC (Radio Resource Control, radio resource control) layer signaling make.

Step 402, the RN uses the R-RNTI to receive the control signaling sent by the DeNB at a specified time.

In this step, the RN can search for the control signaling sent by the DeNB at a specified time, and use the R-RNTI to descramble the searched control signaling. For the RN configured with the R-RNTI, the searched control signaling can be descrambled, and the MBSFN area configuration information sent by the DeNB can be obtained by further parsing the control signaling.

In the above process, each RN under the control of the DeNB receives the time when the DeNB sends the control signaling using the R-RNTI, which can be configured by the network side, for example, when the RN accesses the system, it is configured by the DeNB; or before sending the corresponding control signaling. The DeNB notifies, for example, the DeNB notifies the RN of the receiving time through dedicated control signaling; or it is specified in the protocol (standard).

Based on the same technical concept, the embodiment of the present invention also provides a relay node device and a base station device.

As shown in FIG. 5, the relay node device provided by the embodiment of the present invention may include: a receiving module 501 and an analyzing module 502, wherein:

The receiving module 501 is configured to receive the control signaling sent by the network side using the universal network identifier configured by the relay node device at a specified time; this module may correspond to an interface module in the actual relay node hardware device, such as a radio frequency module;

The parsing module 502 is configured to decode the control signaling received by the receiving module 501 to obtain the control information carried therein; this module may correspond to an information processing module in an actual relay node hardware device, such as a CPU.

In the above relay node device, the receiving module 501 may send the relay node device at the time specified in the specification, or at the time configured by the network side to the relay node device before sending the control signaling, or at the network side The control signaling is received at the time notified to the relay node device in a dedicated control signaling manner before the control signaling. The process of receiving the control signaling by the module may be: after descrambling the control signaling by using the universal network identifier, receiving the descrambled control signaling.

The above relay node device further includes a configuration module 503 . The receiving module 501 can also receive the control signaling sent by the network side, which carries the general network identifier and the dedicated network identifier allocated for the relay node device, or carries the general network identifier allocated for the relay node device; the configuration module 503 may configure the general network identifier carried in the control signaling received by the receiving module 501 into the relay node device. The configuration module 503 may also configure the universal network identifier to the relay node device according to a system or a protocol-specified manner.

As shown in FIG. 6, the base station equipment provided by the embodiment of the present invention may include: a signaling processing module 601 and a sending module 602, wherein:

The signaling processing module 601 is used to carry the control information sent by the relay node device with a general network identifier in the control signaling; this setting module may correspond to relevant hardware modules in the actual base station device, such as a control unit, CPU, etc. ;

The sending module 602 is configured to send the control signaling using the universal network identifier of the relay node device at a specified time; the sending module may correspond to relevant hardware modules in the actual base station device, such as baseband module, radio frequency transmitting module, etc.

In the above base station equipment, the sending module 601 may use the universal network identifier to scramble the control signaling before sending it. The module may also send the time information of receiving the control signaling to the relay node device before sending the control signaling, so that the relay node device receives the control signaling carrying the control information in time. The module may also send control signaling to the relay node device, which carries a general network identifier and a dedicated network identifier allocated for the relay node device, or carries a general network identifier allocated for the relay node device, In order to configure the universal network identifier into the relay node device.

It can be seen from the above description that in the above embodiments of the present invention, by configuring a general network identifier for the relay node, and using the general network identifier to send a message carrying a request to multiple relay nodes to the relay node device with the general network identifier The control signaling of the control information with the same content sent by the device enables the relay node device configured with the universal network identifier to receive the control signaling, and then analyze and obtain the control information carried therein. Since multiple relay node devices are configured with the same universal network identifier, the relay node device with the universal network identifier can receive the control signaling carrying the control information sent using the universal identifier, without the need for the network side to The relay node devices respectively send control signaling carrying control information with the same content, thereby reducing system resource overhead compared with the prior art, improving transmission efficiency of control information, and improving system performance.

Considering that in actual operation of MBMS services, the more types of services that can be provided, the more attractive users are to receive them. Therefore, with the increase of services, the efficiency of the optimization mechanism implemented in the embodiments of the present invention will be further improved.

Through the description of the above embodiments, those skilled in the art can clearly understand that the present invention can be implemented by means of software plus a necessary general-purpose hardware platform, and of course also by hardware, but in many cases the former is a better implementation Way. Based on this understanding, the essence of the technical solution of the present invention or the part that contributes to the prior art can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions to make a A computer device (which may be a personal computer, a server, or a network device, etc.) executes the methods described in various embodiments of the present invention.

Those skilled in the art can understand that the drawing is only a schematic diagram of a preferred embodiment, and the modules or processes in the drawing are not necessarily necessary for implementing the present invention.

Those skilled in the art can understand that the modules in the device in the embodiment can be distributed in the device in the embodiment according to the description in the embodiment, or can be located in one or more devices different from the embodiment according to corresponding changes. The modules in the above embodiments can be combined into one module, and can also be further split into multiple sub-modules.

The serial numbers of the above embodiments of the present invention are for description only, and do not represent the advantages and disadvantages of the embodiments.

The above disclosures are only a few specific embodiments of the present invention, however, the present invention is not limited thereto, and any changes conceivable by those skilled in the art shall fall within the protection scope of the present invention.

Claims (14)

1. A method for transmitting control information, comprising the following steps: The relay node device with the universal network identifier uses the universal network identifier configured by the relay node device to receive the control signaling sent by the network side at a specified time, and the universal network identifier is the same one owned by multiple relay node devices network identification; The relay node device obtains the control information carried therein by decoding the control signaling. 2. The method according to claim 1, wherein the relay node device uses the universal network identifier to receive the control signaling, specifically: the relay node device uses the universal network identifier to descramble the control signaling After the signaling, the descrambled control signaling is received. 3. The method according to claim 1, wherein the universal network identifier is configured in the relay node device in one of the following ways: The network side sends the general network identifier and the dedicated network identifier allocated to the relay node device to the relay node device through a control signaling; The network side sends the universal identifier assigned to the relay node device to the relay node device through a separate control signaling; Configured to the relay node device in a system or protocol-specified manner. 4. The method according to any one of claims 1 to 3, characterized in that, the specified time is specified by a specification, or is configured to the The relay node device, or the network side notifies the relay node device through dedicated control signaling before sending the control signaling. 5. The method according to any one of claims 1 to 3, wherein the control information includes: part of system broadcast message information, or/and configuration information of a single frequency network multicast broadcast MBSFN area. 6. The method according to claim 5, wherein the part of system broadcast message information includes: radio resource configuration information for relay node equipment, or/and MBMS service broadcast messages. 7. A relay node device, characterized in that it comprises: The receiving module is configured to use the universal network identifier configured by the relay node device to receive the control signaling sent by the network side at a specified time, where the universal network identifier is the same network identifier possessed by multiple relay node devices; The parsing module is configured to decode the control signaling received by the receiving module to obtain the control information carried therein. 8. The relay node device according to claim 7, wherein the receiving module is specifically configured to receive descrambled control signaling after descrambling the control signaling by using the universal network identifier. 9. The relay node device according to claim 7, characterized in that, the receiving module is specifically configured to, at the time specified in the specification, or at the network side before sending the control signaling, configure it to The time at which the relay node device receives the control signaling, or the time notified to the relay node device through dedicated control signaling before the network side sends the control signaling. 10. The relay node device according to any one of claims 7 to 9, further comprising a configuration module; The receiving module is further configured to receive the control signaling sent by the network side, which carries the general network identifier and the dedicated network identifier allocated for the relay node device, or carries the general network identifier allocated for the relay node device ; The configuration module is configured to configure the general network identifier carried in the control signaling received by the receiving module into the relay node device; or, configure the general network identifier according to a system or a protocol-specified manner to the relay node device. 11. A base station device, characterized in that it comprises: The signaling processing module is configured to carry the control information sent by the relay node device with a common network identifier in the control signaling, and the universal network identifier is the same network identifier possessed by multiple relay node devices; A sending module, configured to use the universal network identifier of the relay node device to send the control signaling at a specified time. 12. The base station device according to claim 11, wherein the sending module is specifically configured to use the universal network identifier to scramble the control signaling before sending it. 13. The base station device according to claim 11, wherein the sending module is further configured to, before sending the control signaling, send the time information of receiving the control signaling to the relay node equipment. 14. The base station device according to any one of claims 11 to 13, wherein the sending module is further configured to send control signaling to the relay node device, wherein the relay node device carries The allocated general network identifier and dedicated network identifier, or carry the general network identifier allocated for the relay node device.

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