CN102036382B - Method, system and device for allocating wireless resources - Google Patents
Method, system and device for allocating wireless resources Download PDFInfo
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- CN102036382B CN102036382B CN200910174562.7A CN200910174562A CN102036382B CN 102036382 B CN102036382 B CN 102036382B CN 200910174562 A CN200910174562 A CN 200910174562A CN 102036382 B CN102036382 B CN 102036382B
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- H—ELECTRICITY
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Abstract
The embodiment of the invention discloses a method for allocating wireless resources. The method comprises: the current condition of a wireless link or the current data in a buffer memory are monitored; the wireless resources between the wireless link and a relay link are adjusted according to the monitoring result; or the adjustment information of the wireless resources is transmitted to a base station according to the obtained monitoring result; and the base station adjusts the wireless resources between the wireless link and the relay link according to the adjustment information of the wireless resources. The embodiment of the invention also provides a system for allocating the wireless resources, a relay station and the base station. The dynamic adjustment of the wireless resources is realized by utilizing the technical scheme provided by the embodiment of the invention so that the wireless resources between the wireless link and the relay link are reasonably adjusted in time and the time delay of the data transmission and the waste of the wireless resources are reduced.
Description
Technical Field
The present invention relates to the field of mobile communications technologies, and in particular, to a method, a system, and an apparatus for configuring radio resources.
Background
With the continuous development of mobile communication technology, in order to meet the needs of users, a relay station is introduced into the original communication system for regenerating and amplifying the wireless signal transmitted between the base station and the mobile terminal. Among them, a radio interface between a Relay station (Relay, RN) and a base station (Donor eNodeB, DeNB) is called a radio link interface (U)UInterface) and the radio interface between the relay station and the user terminal (UE) is called a relay link interface (Un interface). In general, radio resources are shared between the radio link interface and the relay link interface in a time division multiplexing manner in units of 1 ms. Since the relay station cannot transmit data to the UE using the relay link interface when receiving data of the base station, that is, using the radio link interface, and similarly cannot receive data of the base station using the radio link interface when transmitting data of the UE using the relay link interface, it is important to allocate radio resources between the radio link interface and the relay link interface in order to transmit data between the base station and the UE at a high speed and in a coordinated manner.
At present, when configuring radio resources between a radio link interface and a relay link interface, a configuration mode with fixed resources is often adopted, that is, after a base station configures radio resources between the radio link interface and the relay link interface, the radio resources that can be used by the two interfaces are fixed and will not change due to the change of network conditions. However, since the number of UEs served by the relay station is dynamically changed, and the channel quality and the service requirement of the relay link interface are also constantly changed, when the method is used to configure the radio resources, if more radio resources are allocated to the radio link interface, downlink data is easily accumulated in the relay station, which results in an increase of the buffer delay of the relay station, and even an overflow of the buffer of the relay station; if more radio resources are allocated to the relay link interface, the buffering delay of the base station may be increased, and if the number of UEs served by the relay station is small or the service requirement is low, the relay link interface resources may be wasted.
In addition, at present, the allocation of radio resources between the radio link interface and the relay link interface is performed by periodically adjusting a System Information Block (SIB), but since the adjustment of SIB causes system message update, and broadcast-nature system message update wakes up all UEs camping and accessing the cell, in a general system, the update frequency of the system message cannot be too fast, and thus cannot meet the requirement of fast adjustment of radio resources.
Therefore, in the process of implementing the invention, the inventor finds that at least the following problems exist in the prior art: the radio resources between the radio link interface and the relay link interface cannot be adjusted relatively timely and reasonably.
Disclosure of Invention
In view of this, embodiments of the present invention provide a method, a system, and a device for configuring radio resources, so as to implement timely and reasonable configuration of radio resources between a radio link interface and a relay link interface, thereby reducing data transmission delay and reducing waste of radio resources.
The embodiment of the invention is realized as follows:
the embodiment of the invention provides a wireless resource allocation method, which comprises the following steps:
monitoring the current state of the wireless link or the current data in the cache;
sending wireless resource adjustment information to a base station according to the obtained monitoring result so that the base station adjusts wireless resources between a wireless link and a relay link according to the wireless resource adjustment information;
wherein, sending the radio resource adjustment information to the base station according to the obtained monitoring result comprises:
generating first-class wireless resource adjustment information according to a monitoring result and sending the first-class wireless resource adjustment information to the base station, wherein the first-class wireless resource adjustment information comprises wireless link resources or relay link resources expected to be acquired by the relay station; or generating second type wireless resource adjustment information according to the monitoring result and sending the second type wireless resource adjustment information to the base station, wherein the second type wireless resource adjustment information comprises the utilization efficiency of the wireless link resource of the relay station, the time delay of the cache data and the status of the cache data.
The embodiment of the invention provides a wireless resource allocation method, which comprises the following steps:
receiving wireless resource adjustment information sent by a relay station;
adjusting the wireless resources between the wireless link and the relay link according to the received wireless resource adjustment information;
the radio resource adjustment information comprises first type radio resource adjustment information or second type radio resource adjustment information;
the first type of radio resource adjustment information includes radio link resources or relay link resources that the relay station expects to acquire, and the second type of radio resource adjustment information includes utilization efficiency of the radio link resources of the relay station, cache data delay and cache data state.
The embodiment of the invention provides a wireless resource allocation system, which comprises: a relay station and a base station, wherein,
the relay station is used for monitoring the current state of the wireless link or the current data in the cache; and sending wireless resource adjustment information to the base station according to the obtained monitoring result; wherein, sending the radio resource adjustment information to the base station according to the obtained monitoring result comprises: generating first-class wireless resource adjustment information according to a monitoring result and sending the first-class wireless resource adjustment information to the base station, wherein the first-class wireless resource adjustment information comprises wireless link resources or relay link resources expected to be acquired by the relay station; or generating second type wireless resource adjustment information according to the monitoring result and sending the second type wireless resource adjustment information to the base station, wherein the second type wireless resource adjustment information comprises the utilization efficiency of the wireless link resource of the relay station, the time delay of the cache data and the cache data state;
the base station is used for adjusting the wireless resources between the wireless link and the relay link according to the wireless resource adjustment information; the radio resource adjustment information includes first type radio resource adjustment information or second type radio resource adjustment information, the first type radio resource adjustment information includes radio link resources or relay link resources that the relay station expects to acquire, and the second type radio resource adjustment information includes utilization efficiency of the relay station radio link resources, cache data delay and cache data state.
An embodiment of the present invention provides a relay station, including: a listening unit, a generating unit and a transmitting unit, wherein,
the monitoring unit is used for monitoring the current state of the wireless link or the current data in the cache;
the generating unit is used for generating wireless resource adjusting information according to the monitoring result obtained by the monitoring unit;
the transmitting unit is configured to transmit the radio resource adjustment information generated by the generating unit to a base station, so that the base station adjusts the radio resource between the radio link and the relay link according to the radio resource adjustment information;
wherein the generating unit comprises a first generating subunit, or a second generating subunit, or a combination of a first generating subunit and a second generating subunit, wherein,
the first generation subunit is configured to generate first-class radio resource adjustment information according to a monitoring result, where the first-class radio resource adjustment information includes a radio link resource or a relay link resource that the relay station desires to acquire;
and the second generation subunit is configured to generate second type radio resource adjustment information according to the monitoring result, where the second type radio resource adjustment information includes the utilization efficiency of the relay station radio link resource, the cache data delay, and the cache data state.
An embodiment of the present invention provides a base station, including: a receiving unit and a second adjusting unit, wherein,
the receiving unit is configured to receive radio resource adjustment information sent by a relay station;
and the second adjusting unit is used for adjusting the wireless resources between the wireless link and the relay link according to the wireless resource adjusting information received by the receiving unit.
Compared with the prior art, the technical scheme provided by the embodiment of the invention has the following advantages and characteristics: the relay station monitors the current state of the wireless link or the current data in the downlink sending buffer, can timely master the utilization condition of the wireless resources on the current wireless link and the relay link in the network and the related condition of the data in the uplink and downlink sending buffer of the relay station, and can dynamically adjust the wireless resources between the current wireless link and the relay link through the base station or the relay station according to the monitoring result, so that the wireless resources between the wireless link and the relay link can be more timely and reasonably adjusted, thereby reducing the data transmission delay and reducing the waste of the wireless resources.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a flowchart of a radio resource allocation method according to an embodiment of the present invention;
fig. 2 is a flowchart of another radio resource allocation method according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a radio resource allocation system according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a relay station according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a unit in a relay station according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of another relay station according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a unit in another relay station according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a base station according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of a unit in a base station according to an embodiment of the present invention;
fig. 10 is a flowchart of a radio resource allocation method according to a specific scenario according to an embodiment of the present invention;
fig. 11 is a flowchart of another radio resource allocation method according to a specific scenario in an embodiment of the present invention;
fig. 12 is a flowchart of a radio resource allocation method according to a third specific scenario in accordance with an embodiment of the present invention;
fig. 13 is a flowchart of a fourth radio resource allocation method according to a specific scenario in an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
An embodiment of the present invention provides a method for configuring radio resources, where the method includes the specific steps shown in fig. 1, and includes:
s101: monitoring the current state of the wireless link or the current data in the cache;
s102: adjusting the wireless resources between the wireless link and the relay link according to the monitoring result;
in S102, the relay station determines whether the current channel quality of the wireless link is lower than the channel quality required to be achieved by the pre-configuration during continuously monitoring the current status of the wireless link or the current data in the buffer, and/or determines whether data accumulation or overflow occurs in the downlink transmission buffer, and increases the wireless resources of the wireless link according to the wireless resources of the relay link when the determination result indicates that the current channel quality of the wireless link is lower than the channel quality required to be achieved by the pre-configuration, and/or the data accumulation or overflow occurs in the downlink transmission buffer.
In addition to the adjustment of the radio resources in the manner in S102, the adjustment of the radio resources may also be performed in the manner in S103:
s103: and sending wireless resource adjustment information to the base station according to the obtained monitoring result, and adjusting the wireless resources between the wireless link and the relay link by the base station according to the wireless resource adjustment information.
In S103, after acquiring the monitoring result, the relay station generates first type radio resource adjustment information according to the monitoring result, where the first type radio resource adjustment information includes: the radio link resource or the relay link resource that the relay station desires to acquire. The relay station sends the first type of radio resource adjustment information to the base station after generating the adjustment information, for example, the relay station tells the base station that the following one or more radio resource subframes for the relay link are to be adjusted to the radio link resource through one or more bits on the relay base station-physical uplink control channel. And adjusting the wireless resources between the wireless link and the relay link by the base station according to the received first-class wireless resource adjustment information.
In addition, after acquiring the monitoring result, the relay station may further generate second type radio resource adjustment information according to the monitoring result, where the second type radio resource adjustment information includes: the utilization efficiency of the wireless link resources of the relay station, the time delay of the buffer data and the state of the buffer data. After generating the second type radio resource adjustment information, the relay station transmits the adjustment information to the base station, and the base station adjusts the radio resource between the radio link and the relay link according to the received second type radio resource adjustment information.
When the radio resource is adjusted in S103, the relay station may transmit the radio resource adjustment information to the base station in a periodic manner or an event-triggered manner.
According to the wireless resource allocation method provided by the embodiment of the invention, the current condition of the wireless link or the current data in the cache is monitored, the utilization conditions of the wireless resources on the current wireless link and the relay link in the network and the related conditions of the data in the cache on the relay station can be timely mastered, and the wireless resources between the current wireless link and the relay link can be dynamically adjusted through the base station or the relay station according to the monitoring result, so that the wireless resources between the wireless link and the relay link can be timely and reasonably adjusted, the data transmission delay is reduced, and the waste of the wireless resources is reduced.
An embodiment of the present invention further provides another radio resource allocation method, where the method includes the specific steps shown in fig. 2, including:
s201: receiving wireless resource adjustment information sent by a relay station;
in S201, when the base station receives the radio resource adjustment information transmitted by the relay station, the received radio resource adjustment information may be a first type of radio resource adjustment information, that is: the wireless link resource or the relay link resource which the relay station expects to acquire; the received radio resource adjustment information may also be a second type of radio resource adjustment information, namely: the utilization efficiency of the wireless link resources of the relay station, the time delay of the buffer data and the state of the buffer data.
S202: and adjusting the wireless resources between the wireless link and the relay link according to the received wireless resource adjustment information.
In S202, since the radio resource adjustment information received by the base station can be classified into the first type radio resource adjustment information and the second type radio resource adjustment information, when the radio resource adjustment information is used to adjust the radio resource, there are two cases:
when the wireless resource adjustment information received by the base station is the first-class wireless resource adjustment information, the base station adjusts the wireless resource between the wireless link and the relay link according to the content in the first-class wireless resource adjustment information and by combining the cache information of the relay station; and when the radio resource adjustment information received by the base station is the second type radio resource adjustment information, the base station adjusts the radio resource between the radio link and the relay link according to the content in the second type radio resource adjustment information and by combining the relay link radio resource information between the base station and the relay station, and then sends the adjustment result to the RN through a downlink signaling.
In the radio resource allocation method according to the embodiment of the present invention, the base station receives the radio resource adjustment information sent by the relay station, and dynamically adjusts the radio resource between the radio link and the relay link of the base station according to the related information included in the adjustment information, so that the radio resource between the radio link and the relay link is adjusted more timely and reasonably, the data transmission delay is reduced, and the waste of the radio resource is reduced.
Correspondingly, an embodiment of the present invention further provides a radio resource configuration system, and the system structure is as shown in fig. 3, and includes a relay station 301 and a base station 302, where:
the relay station 301 is configured to monitor a current status of a wireless link or current data in a cache; adjusting wireless resources between the wireless link and the relay link according to the monitoring result; or, sending wireless resource adjustment information to the base station according to the obtained monitoring result;
and the base station 302 is configured to receive the radio resource adjustment information sent by the relay station 301, and adjust the radio resource between the radio link and the relay link according to the radio resource adjustment information.
The radio resource configuration system provided in this embodiment may be configured to execute the radio resource configuration method provided in the embodiment of the present invention. The process of configuring the radio resource by the radio resource configuration system may refer to the radio resource configuration method provided in the embodiment of the present invention.
In the radio resource adjustment system provided by the embodiment of the present invention, the relay station monitors the current status of the radio link or the current data in the downlink transmission buffer, so as to timely grasp the utilization conditions of the radio resources on the current radio link and the relay link in the network and the related conditions of the data in the buffer on the relay station, and according to the monitoring result, the base station or the relay station can dynamically adjust the radio resources between the current radio link and the relay link, so that the radio resources between the radio link and the relay link can be adjusted timely and reasonably, the time delay during data transmission is reduced, and the waste of the radio resources is reduced.
In addition, an embodiment of the present invention further provides a relay station, where the relay station is as shown in fig. 4, and includes a monitoring unit 401 and a first adjusting unit 402, where:
a monitoring unit 401, configured to monitor a current status of a wireless link or current data in a cache;
a first adjusting unit 402, configured to adjust a radio resource between the radio link and the relay link according to the monitoring result obtained by the monitoring unit 401.
The above units may be further embodied, wherein the first adjusting unit 402 may include a structure as shown in fig. 5:
a judging subunit 501, configured to judge whether the current channel quality of the wireless link is lower than a channel quality required to be achieved by a pre-configuration, and/or judge whether data accumulation or overflow occurs in a buffer;
a first adjusting subunit 502, configured to decrease the radio resource of the relay link and increase the radio resource of the radio link when the current channel quality of the radio link is lower than a channel quality required by a pre-configuration and/or when buffer data is piled up or overflowed.
It is to be understood that the illustrations in the figures or embodiments are merely schematic and represent logical structures, where elements shown as separate components may or may not be physically separate, and where elements shown as units may or may not be physical units, may be located in one place, or distributed over several network elements.
The relay station provided in this embodiment may be configured to execute the radio resource configuration method provided in the embodiment of the present invention. The process of configuring the radio resource by the relay station may refer to the radio resource configuration method provided in the embodiment of the present invention.
In addition, another structure of a relay station provided in the embodiment of the present invention is also shown in fig. 6, where the relay station is configured to communicate with a base station, and includes a monitoring unit 401, a generating unit 602, and a transmitting unit 603, where:
a monitoring unit 401, configured to monitor a current status of a wireless link or current data in a cache;
a generating unit 602, configured to generate radio resource adjustment information according to the monitoring result obtained by the monitoring unit 401;
a transmitting unit 603, configured to transmit the radio resource adjustment information generated by the generating unit 602 to the base station, so that the base station adjusts the radio resource between the radio link and the relay link according to the radio resource adjustment information.
The above units may be further embodied, wherein the generating unit 602 may include any generating sub-unit or any combination of generating sub-units as follows:
a first generating subunit 701, configured to generate first-type radio resource adjustment information according to a monitoring result, where the first-type radio resource adjustment information includes radio link resources or relay link resources that the relay station desires to acquire;
a second generating subunit 702, configured to generate second type radio resource adjustment information according to the monitoring result, where the second type radio resource adjustment information includes the utilization efficiency of the relay station radio link resource, the cache data delay, and the cache data state.
A sending unit 603, configured to send the first type radio resource adjustment information generated by the first generating subunit and the second type radio resource adjustment information generated by the second sending subunit to the base station.
It is to be understood that the illustrations in the figures or embodiments are merely schematic and represent logical structures, where elements shown as separate components may or may not be physically separate, and where elements shown as units may or may not be physical units, may be located in one place, or distributed over several network elements.
The relay station provided in this embodiment may be configured to execute the radio resource configuration method provided in the embodiment of the present invention. The process of configuring the radio resource by the relay station may refer to the radio resource configuration method provided in the embodiment of the present invention.
The relay station provided by the embodiment of the invention can timely grasp the utilization conditions of the current wireless link and the wireless resources on the relay link in the network and the related conditions of the data in the uplink and downlink transmission caches of the relay station by monitoring the current condition of the wireless link or the current data in the downlink transmission cache, and can dynamically adjust the wireless resources according to the monitoring result, or send the wireless resource adjustment information generated by the monitoring result to the base station, and dynamically adjust the wireless resources by the base station, so that the wireless resources between the wireless link and the relay link are more timely and reasonably adjusted, the data transmission delay is reduced, and the waste of the wireless resources is reduced.
Finally, an embodiment of the present invention further provides a base station, where the base station has a structure as shown in fig. 8, and the base station is configured to communicate with a relay station, and includes a receiving unit 801 and a second adjusting unit 802, where:
a receiving unit 801, configured to receive radio resource adjustment information sent by a relay station;
a second adjusting unit 802, configured to adjust the radio resource between the radio link and the relay link according to the radio resource adjustment information received by the receiving unit 801.
After further embodying the above structure, the second adjusting unit 802 may include any adjusting sub-unit as shown in fig. 9, or any combination of adjusting sub-units:
a second adjusting subunit 901, configured to, when the radio resource adjustment information received by the receiving unit 801 is first-class radio resource adjustment information, adjust, according to the first-class radio resource adjustment information received by the receiving unit 801 and by combining with the cache information of the relay station, a radio resource between a radio link and a relay link of the relay station;
a third adjusting sub-unit 902, configured to, when the radio resource adjustment information received by the receiving unit 801 is the second type of radio resource adjustment information, adjust the radio resource between the relay station radio link and the relay link according to the second type of radio resource adjustment information received by the receiving unit 801 and by combining with the relay link radio resource information between the relay stations.
It is to be understood that the illustrations in the figures or embodiments are merely schematic and represent logical structures, where elements shown as separate components may or may not be physically separate, and where elements shown as units may or may not be physical units, may be located in one place, or distributed over several network elements.
The base station provided in this embodiment may be configured to execute the radio resource configuration method provided in the embodiment of the present invention. The process of the base station performing radio resource configuration may refer to the radio resource configuration method provided in the embodiment of the present invention.
According to the base station provided by the embodiment of the invention, the wireless resource adjustment information sent by the relay station is received, and the wireless resource is dynamically adjusted according to the received wireless resource adjustment information, so that the wireless resource between the wireless link and the relay link is timely and reasonably adjusted, and the data transmission delay and the waste of the wireless resource are reduced.
In combination with the method, system, apparatus, and specific application scenario, the technical solution provided by the present invention is further introduced, in a Long Term Evolution (LTE) system, a configuration of a radio resource between a radio link interface and a relay link interface may be implemented by adjusting a multimedia broadcast multicast service single frequency network (MBSFN) subframe, in practical applications, the MBSFN subframe may be used for transmission of data on the relay link, and may also be used for positioning service, sending and receiving by a high-order antenna, and the like. In this embodiment, the method for configuring radio resources includes the steps shown in fig. 10:
step 1001: configuring an MBSFN subframe by the DeNB;
in step 1001, before performing normal communication, the DeNB first needs to perform initialization of MBSFN subframe configuration, where the DeNB may perform MBSFN subframe configuration by estimating the number of UEs to access the cell or by using past experience values.
Step 1002: a DeNB configures a basic rule that an RN feeds back adjustment information of an MBSFN subframe;
in step 1002, when configuring the basic rule that the RN feeds back the adjustment information of the MBSFN subframe, the DeNB may have multiple configuration modes according to different application situations: for example, when the RN reports information content, the number of MBSFN subframes that the RN desires to report may be specified. For convenience of description, this type of adjustment information is referred to as first type of adjustment information, and for this type of adjustment information, the DeNB may directly adjust the MBSFN subframes according to the number of MBSFN subframes required in the adjustment information.
Meanwhile, when the information content reported by the RN is configured, the contents of data caching delay, caching state, resource utilization efficiency of a wireless link interface, expected spectrum efficiency of the next reporting adjustment period and the like reported by the RN at present can be specified, so that the RN can be used as reference information for the DeNB to perform MBSFN subframe adjustment. Similarly, for convenience of description, this type of adjustment information is referred to as second type of adjustment information, in which the RN does not report information such as the type or number of MBSFN subframes that it wishes to acquire to the DeNB, but the DeNB adjusts the MBSFN subframes according to the reported reference information by using some reference information.
In addition, the DeNB may also configure a reporting mode in which the RN reports the adjustment information of the MBSFN subframe, for example, specify whether the RN reports the adjustment information in a periodic mode or an event-triggered mode. If the DeNB stipulates that the RN reports the adjustment information in a periodic manner, the RN needs to be configured in a reporting period; if the DeNB specifies that the RN reports the adjustment information in an event-triggered manner, the DeNB needs to set a trigger threshold, for example, a condition that the delay of a certain service on the RN or the average delay of the whole RN data is used as the trigger threshold, or a condition that the delay of a certain service on the RN or the buffer size delay of the whole RN data is used as the trigger threshold, or a condition that the actual efficiency of the radio link interface or the like is used as the trigger threshold. In a specific application process, according to a specific configuration of the DeNB, only one of the two types of adjustment information may be selected to be reported, or both the two types of adjustment information may be reported.
The two steps are related preparation work performed by the DeNB before the dynamic adjustment of the MBSFN subframe, and the DeNB needs to perform related configuration in the two steps when performing subsequent adjustment of the MBSFN subframe. When the MBSFN subframe is dynamically adjusted, the following steps need to be executed:
step 1003: the RN monitors data on a wireless link or data information cached on the wireless link and reports MBSFN subframe adjustment information to the DeNB;
according to the configuration of the relevant reference information reported by the RN in step 1002, the RN may report the adjustment information required for the MBSFN subframe adjustment according to the content of the preset adjustment information and the format of the adjustment information and according to the monitored condition of the data on the radio link.
Since the adjustment information reported by the RN to the DeNB includes the first type of adjustment information, the second type of adjustment information, or the first type of adjustment information and the second type of adjustment information, when the adjustment information reported by the RN is the first type of adjustment information, a fixed format may be adopted according to the preset setting.
It should be noted that when the RN reports the first type of adjustment information to the DeNB, the first type of adjustment information may be reported through an extended Radio Resource Control (RRC) message, or may be transmitted through a dedicated Medium Access Control (MAC) signaling or on a new relay base station — physical uplink control channel (R-PUCCH).
For example, the RN determines, according to locally cached data or a change in the wireless link environment, that in the next period of time, the reception of data on the relay link needs to be reduced, and more resources are needed for the transmission of data on the wireless link. At this time, the RN reports the adjustment information to the DeNB, advocates that the transmission of the uplink and downlink data of the relay link is stopped on one or more next corresponding relay link subframes already configured as MBSFN subframes, and uses the subframes for the transmission of the uplink and downlink data of the RN radio link.
When the adjustment information reported to the DeNB by the RN is the second type of adjustment information, the adjustment information may also be reported by an extended RRC message or by dedicated MAC signaling. If the second type of adjustment information reported by the RN to the DeNB includes the contents of the current data caching delay, the caching state, the resource utilization efficiency of the radio link interface, the expected spectrum efficiency of the next reporting adjustment period, and the like on the RN, the DeNB may consider and refer to these information according to different priorities, for example, the data caching delay of the RN may be referred to preferentially.
When the RN reports the adjustment information to the DeNB in a periodic mode, reporting the adjustment period to the DeNB at regular time according to a reporting period preset by the DeNB; and when the RN reports the adjustment information to the DeNB in an event triggering mode, the RN continuously monitors the downlink data condition of the wireless link interface, and when the monitored related data of the downlink data on the wireless link exceeds a preset threshold value, the RN reports the MBSFN subframe adjustment information to the DeNB. For example, when the RN monitors uplink and downlink data of the radio link, and finds that the delay of a certain type of service exceeds a preset delay threshold of the service, the RN needs to report MBSFN subframe adjustment information to the DeNB at this time, and it is desirable that the DeNB can adjust the MBSFN subframe, so as to reduce the delay of the service. When the average time delay of the RN monitoring the whole RN data or the size of the cache exceeds the set threshold, the processing method is the same as above, and is not described herein again.
Step 1004: and the DeNB receives the MBSFN subframe adjustment information sent by the RN and adjusts the MBSFN subframe according to the adjustment information.
In step 1004, if the DeNB receives the first type of adjustment information sent by the RN, the DeNB comprehensively considers the bandwidth requirements of all RNs and UEs within its jurisdiction range, and adjusts the MBSFN subframe of the RN in combination with the data information required in the first type of adjustment information reported by the RNs, so as to balance the requirement of the MBSFN subframe among the RNs and the requirement of the UE on unicast service bandwidth.
With reference to the specific example mentioned in step 1003, the RN requests, according to the listening result, the DeNB to stop the transmission of the uplink and downlink data of the relay link on the next one or more corresponding relay link subframes that have been configured as MBSFN subframes, and uses the subframe for the transmission of the uplink and downlink data of the RN radio link. And after receiving the message, the DeNB terminates the data transmission to the RN on the corresponding MBSFN subframe.
If the DeNB receives the second type of adjustment information sent by the RN, the DeNB firstly calculates the spectrum utilization efficiency of the RN wireless link interface and compares the spectrum utilization efficiency with the calculated spectrum utilization efficiency of the RN wireless link interface, and if the spectrum utilization efficiency of the RN wireless link interface is found to be greater than the spectrum utilization efficiency of the RN wireless link interface, the wireless resources on the wireless link interface are appropriately reduced under the condition of considering the buffer size on the RN, and the wireless resources on the RN wireless link interface are increased; otherwise, the radio resource on the radio link interface is increased, and the radio resource on the relay link interface is decreased. In addition, the DeNB may also adjust the MBSFN subframe according to the size of the downlink data cached on the DeNB reported by the RN. If the reported adjustment information indicates that the current downlink data cached on the RN is too large, the DeNB needs to reduce the radio resource of the relay link interface on the RN and increase the radio resource of the radio link interface; otherwise, the radio resource of the relay link interface on the RN is increased, and the radio resource of the radio link interface is reduced.
Step 1005: and the RN receives the relay link data and transmits the radio link data by using the adjusted MBSFN subframe.
In step 1005, after the DeNB adjusts the MBSFN subframe, when the RN receives the relay link data and transmits the radio link data by using the adjusted MBSFN subframe, the DeNB may not modify the configuration information of the MBSFN subframe in the system message, or may adaptively modify the configuration information of the MBSFN subframe in the system message according to the current situation, and in general, to reduce the network load, the DeNB does not modify the configuration information of the MBSFN subframe in the system message.
In the previous embodiment, the RN generates corresponding radio resource adjustment information according to the monitoring result and sends the corresponding radio resource adjustment information to the DeNB, and the DeNB adjusts the radio resource between the radio link and the relay link according to the received radio resource adjustment information, but the embodiment of the present invention further provides a method for the RN to directly adjust the radio resource according to the monitoring result, where the flow of the method is shown in fig. 11, and the method includes:
step 1101: the RN monitors the quality of data and/or downlink channels in a downlink sending buffer on the RN;
step 1102: and when the monitoring result shows that the data in the downlink sending buffer is accumulated or overflowed and/or the downlink channel quality is lower than the preset required channel quality, reducing the wireless resources of the relay link and increasing the wireless resources of the wireless link.
In step 1102, when the RN continuously monitors the data in the downlink transmission buffer and the downlink channel quality, it determines whether the current channel quality of the wireless link is lower than the pre-configured required channel quality and/or the downlink transmission buffer is piled up or overflowed, and when the determination result indicates that the current channel quality of the wireless link is lower than the pre-configured required channel quality and/or the downlink transmission buffer is piled up or overflowed, it appropriately reduces the wireless resources of the relay link and increases the wireless resources of the wireless link, that is, the relay station automatically abandons the data reception on the relay link on the corresponding subframe and then transmits the wireless link data on the corresponding MBSFN subframe.
In the above two embodiments, the RN monitors the channel quality and adjusts the radio resource according to the monitoring result, in this embodiment, a DeNB performs related monitoring and adjusts the radio resource according to the monitoring result, and the method includes, as shown in fig. 12:
step 1201: the DeNB monitors the channel condition of a relay link corresponding to the RN;
in step 1201, the DeNB monitors the channel condition of the relay link corresponding to the RN, for example, the channel quality and the channel utilization efficiency of the relay link, and uses the monitoring result as a main basis for performing resource adjustment. In addition, the DeNB may also use the data information buffered in the RN and the radio link status of the RN sent by the RN as an auxiliary basis for adjusting the radio resources.
Step 1202: the DeNB adjusts the wireless resources between the corresponding RN relay link and the wireless link according to the monitoring result;
in step 1202, the DeNB determines how to adjust the radio resource between the relay link and the radio link corresponding to the RN according to the monitored channel quality or channel utilization efficiency of the relay link corresponding to the RN: for example, when the DeNB monitors that the quality of the relay link channel of the corresponding RN is poor or the channel utilization efficiency is high, the radio resource of the RN relay link needs to be increased appropriately. In combination with the other information mentioned in step 901, the DeNB may also appropriately consider the data information buffered in the RN and the radio link condition of the RN, and adjust the radio resource between the RN relay link and the radio link by combining the above information with the monitored relay link condition of the RN.
Step 1203: and the DeNB sends the radio resource adjustment result to the corresponding RN.
In step 1203, after the DeNB completes the adjustment of the radio resource between the RN relay link and the radio link, the adjustment result may be notified to the RN through MBSFN configuration signaling or other resource adjustment signaling.
It should be noted that, after receiving the resource adjustment result sent by the DeNB, the RN generally does not modify the configuration information of the MBSFN subframe in the system message, but only needs to receive and send data according to the configuration condition of the MNSFN subframe adjusted by the DeNB.
In addition, an embodiment of the present invention further provides a base station, including a second monitoring unit and a third adjusting unit, where: the second monitoring unit is used for monitoring the channel condition of the relay link of the corresponding relay station; and a third adjusting unit, configured to adjust the radio resource between the relay link and the radio link of the corresponding relay station according to the monitoring result of the second monitoring unit.
According to the wireless resource configuration method provided by the embodiment of the invention, the base station monitors and detects the related information and adjusts the wireless resources between the relay link and the wireless link of the relay station according to the monitoring result, so that the wireless resources between the wireless link and the relay link can be adjusted timely and reasonably, and the data transmission delay and the waste of the wireless resources are reduced.
The embodiment of the present invention further provides a fourth method for configuring radio resources, where a specific flow of the method is shown in fig. 13, and the method includes:
s1301: configuring an uplink subframe for transmitting downlink data control information to User Equipment (UE) so that the UE can transmit the downlink data control information by using the uplink subframe;
in S1301, the network side can allocate On/Off bits to the UE periodically in the physical uplink control channel, and when the UE needs to control downlink data, the network side can transmit downlink data control information through the allocated On/Off bits.
It should be noted here that the network side may be a base station and a relay station that provide mobile communication service for the UE.
S1302: receiving downlink data control information sent by UE;
in S1301, it can be known that the UE needs to configure an uplink subframe for downlink data control information transmission to the UE through the network, so that the UE transmits the downlink data control information by using the uplink subframe, where the On/Off bits allocated by the UE On the downlink data control information transmitting side are normally On, and when the On/Off bits transmitted by the UE are On, it indicates that the downlink data of the UE needs to be reduced; when the On/Off bit transmitted by the UE is Off, it indicates that the UE needs to add downlink data.
S1303: and adjusting the downlink data of the UE according to the received downlink data control information.
In S1303, when the On/Off bit received by the network side and sent by the UE is an On bit, the downlink data of the UE is reduced; and when the network side receives On/Off bits sent by the UE as Off bits, the downlink data of the UE is added.
In the method for configuring radio resources provided by the embodiments of the present invention, a designated uplink resource is configured to a UE, so that the resource is used for the UE to send downlink data control information, and according to the downlink data control information sent by the UE, the current downlink data condition of the UE is obtained, so as to adjust the downlink data of the UE. Therefore, the wireless resources between the wireless link and the relay link can be adjusted timely and reasonably, thereby reducing the data transmission time delay and reducing the waste of the wireless resources
Those of ordinary skill in the art will understand that: all or part of the steps for implementing the method embodiments may be implemented by hardware related to program instructions, and the program may be stored in a computer readable storage medium, and when executed, the program performs the steps including the method embodiments; and the aforementioned storage medium includes: various media capable of storing program codes, such as ROM (Read-Only Memory), RAM (random access Memory), magnetic disk, and optical disk.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. A radio resource configuration method, for a relay station, the method comprising:
monitoring the current state of the wireless link or the current data in the cache;
sending wireless resource adjustment information to a base station according to the obtained monitoring result so that the base station adjusts wireless resources between a wireless link and a relay link according to the wireless resource adjustment information;
wherein, sending the radio resource adjustment information to the base station according to the obtained monitoring result comprises:
generating first-class wireless resource adjustment information according to a monitoring result and sending the first-class wireless resource adjustment information to the base station, wherein the first-class wireless resource adjustment information comprises wireless link resources or relay link resources expected to be acquired by the relay station; or generating second type wireless resource adjustment information according to the monitoring result and sending the second type wireless resource adjustment information to the base station, wherein the second type wireless resource adjustment information comprises the utilization efficiency of the wireless link resource of the relay station, the time delay of the cache data and the status of the cache data.
2. The method of claim 1, wherein the sending radio resource adjustment information to the base station according to the obtained monitoring result comprises:
and sending wireless resource adjustment information to the base station in a periodic mode or an event triggering mode according to the obtained monitoring result.
3. The method of claim 1, wherein the radio resources comprise: and the multimedia broadcast multicast service single frequency network MBSFN subframe.
4. A method for configuring radio resources, comprising:
receiving wireless resource adjustment information sent by a relay station;
adjusting the wireless resources between the wireless link and the relay link according to the received wireless resource adjustment information;
the radio resource adjustment information comprises first type radio resource adjustment information or second type radio resource adjustment information;
the first type of radio resource adjustment information includes radio link resources or relay link resources that the relay station expects to acquire, and the second type of radio resource adjustment information includes utilization efficiency of the radio link resources of the relay station, cache data delay and cache data state.
5. The method of claim 4, wherein the radio resources comprise: and the multimedia broadcast multicast service single frequency network MBSFN subframe.
6. A radio resource configuration system, comprising: a relay station and a base station, wherein,
the relay station is used for monitoring the current state of the wireless link or the current data in the cache; and sending wireless resource adjustment information to the base station according to the obtained monitoring result; wherein, sending the radio resource adjustment information to the base station according to the obtained monitoring result comprises: generating first-class wireless resource adjustment information according to a monitoring result and sending the first-class wireless resource adjustment information to the base station, wherein the first-class wireless resource adjustment information comprises wireless link resources or relay link resources expected to be acquired by the relay station; or generating second type wireless resource adjustment information according to the monitoring result and sending the second type wireless resource adjustment information to the base station, wherein the second type wireless resource adjustment information comprises the utilization efficiency of the wireless link resource of the relay station, the time delay of the cache data and the cache data state;
the base station is used for adjusting the wireless resources between the wireless link and the relay link according to the wireless resource adjustment information; the radio resource adjustment information includes first type radio resource adjustment information or second type radio resource adjustment information, the first type radio resource adjustment information includes radio link resources or relay link resources that the relay station expects to acquire, and the second type radio resource adjustment information includes utilization efficiency of the relay station radio link resources, cache data delay and cache data state.
7. A relay station, comprising: a listening unit, a generating unit and a transmitting unit, wherein,
the monitoring unit is used for monitoring the current state of the wireless link or the current data in the cache;
the generating unit is used for generating wireless resource adjusting information according to the monitoring result obtained by the monitoring unit;
the transmitting unit is configured to transmit the radio resource adjustment information generated by the generating unit to a base station, so that the base station adjusts the radio resource between the radio link and the relay link according to the radio resource adjustment information;
wherein the generating unit comprises a first generating subunit, or a second generating subunit, or a combination of a first generating subunit and a second generating subunit, wherein,
the first generation subunit is configured to generate first-class radio resource adjustment information according to a monitoring result, where the first-class radio resource adjustment information includes a radio link resource or a relay link resource that the relay station desires to acquire;
and the second generation subunit is configured to generate second type radio resource adjustment information according to the monitoring result, where the second type radio resource adjustment information includes the utilization efficiency of the relay station radio link resource, the cache data delay, and the cache data state.
8. A base station, comprising: a receiving unit and a second adjusting unit, wherein,
the receiving unit is configured to receive radio resource adjustment information sent by a relay station;
the second adjusting unit is configured to adjust the radio resource between the radio link and the relay link according to the radio resource adjustment information received by the receiving unit;
wherein the second adjusting unit comprises a second adjusting subunit, or a third adjusting subunit, or a combination of the second adjusting subunit and the third adjusting subunit,
the second adjusting subunit, configured to adjust, according to the first type of radio resource adjustment information and in combination with the cache information of the relay station, the radio resource between the radio link of the relay station and the relay link when the received radio resource adjustment information is the first type of radio resource adjustment information; or,
and the third adjusting subunit, when the received radio resource adjustment information is second-type radio resource adjustment information, is configured to adjust, according to the second-type radio resource adjustment information, radio resources between the relay station radio link and the relay link in combination with relay link radio resource information between the relay station and the relay station.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910174562.7A CN102036382B (en) | 2009-09-30 | 2009-09-30 | Method, system and device for allocating wireless resources |
| PCT/CN2010/077453 WO2011038679A1 (en) | 2009-09-30 | 2010-09-29 | Method, system and device for wireless resource allocation |
| BR112012009372A BR112012009372A2 (en) | 2009-09-30 | 2010-09-29 | method, system, and apparatus for setting radio features |
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| Application Number | Priority Date | Filing Date | Title |
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| CN200910174562.7A CN102036382B (en) | 2009-09-30 | 2009-09-30 | Method, system and device for allocating wireless resources |
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| CN (1) | CN102036382B (en) |
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| WO (1) | WO2011038679A1 (en) |
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| EP3742783A4 (en) * | 2018-01-19 | 2021-09-08 | Fujitsu Limited | Method and apparatus for receiving and transmitting configuration information, and communication system |
| CN110149699A (en) * | 2018-02-11 | 2019-08-20 | 成都华为技术有限公司 | A kind of resource allocation method and node |
| CN112514467B (en) * | 2018-08-06 | 2022-09-23 | 华为技术有限公司 | Method, device and base station for reducing same frequency interference |
| US11871381B2 (en) * | 2018-11-16 | 2024-01-09 | Beijing Xiaomi Mobile Software Co., Ltd. | Data transmission method and apparatus |
| CN112218339B (en) * | 2020-09-30 | 2023-03-14 | 三维通信股份有限公司 | Relay transmission scheduling method, device, storage medium and electronic equipment |
| CN114828152B (en) * | 2021-01-22 | 2024-09-20 | 展讯通信（上海）有限公司 | System information updating method and device, relay device, terminal and storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101330314A (en) * | 2007-06-21 | 2008-12-24 | 中兴通讯股份有限公司 | Method and apparatus for indicating ascending scheduling information report in a LTE system |
| CN101389113A (en) * | 2007-09-14 | 2009-03-18 | 中兴通讯股份有限公司 | Method for allocating radio resource to relays |
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| FI106497B (en) * | 1999-01-15 | 2001-02-15 | Nokia Networks Oy | Flow control method in communication system |
| WO2006046889A1 (en) * | 2004-10-25 | 2006-05-04 | Telefonaktiebolaget Lm Ericsson (Publ) | Radio quality based channel resource management |
| US20080205323A1 (en) * | 2007-02-22 | 2008-08-28 | Samsung Electronics Co., Ltd. | Apparatus and method for resource allocation considering buffering in relay wireless communication system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101330314A (en) * | 2007-06-21 | 2008-12-24 | 中兴通讯股份有限公司 | Method and apparatus for indicating ascending scheduling information report in a LTE system |
| CN101389113A (en) * | 2007-09-14 | 2009-03-18 | 中兴通讯股份有限公司 | Method for allocating radio resource to relays |
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| WO2011038679A1 (en) | 2011-04-07 |
| BR112012009372A2 (en) | 2016-06-07 |
| CN102036382A (en) | 2011-04-27 |
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