The method and apparatus of uniform dispatching in the up-link power control
Technical field
The present invention relates to wireless communication field, more specifically, relate to the method and apparatus of uniform dispatching in a kind of up-link power control.
Background technology
In follow-on broadband wireless communication network, solving in the cordless communication network presence of intercell interference becomes a key factor that improves inter-cell user terminal (UT) throughput and average user terminal (UT) throughput and is faced with formidable challenges.
At present, the person limits out methods such as employing interference randomization, interference coordination, interference eliminated to solve the problem of presence of intercell interference in IEEE 802.16j, IMT-Advanced, WINNER.Third generation partner program (3rd Generation Partnership Project; 3GPP) Long Term Evolution (Long Term Evolution; LTE) proposed in to use and had base station (BaseStation; BS) method of the Inter-Cell Interference Coordination of cooperation reduces interference between, and up-link power control is one of key technology wherein.Adjust for each user terminal (UT) in the up-link power control among the current 3GPP LTE; The parameter that wherein need adjust comprises a lot; Such as, road loss compensation factor, power excursion or the like; When user terminal in the system (UT) number is very big, can cause bigger overhead.
Among the present invention; Provide a kind of and in up-link power control, passed through channel quality information (Channel Quality Information; CQI), service quality (Quality of Service, QoS), service priority message produces the user terminal of the control signaling with the control of same uplink power (User Terminal UT) divides into groups; Use identical as far as possible schedule information to carry out uniform dispatching to all user terminals (UT) in dividing into groups; Under the prerequisite that does not influence the up-link power control efficiency,, effectively reduce the expense of system through the minimizing of schedule information.
Summary of the invention
For to using identical as far as possible schedule information to carry out uniform dispatching through all user terminals (UT) that divide into groups, the present invention proposes the method for uniform dispatching in a kind of up-link power control, may further comprise the steps: the grouping strategy that a plurality of user terminals are set; According to grouping strategy a plurality of user terminals are divided into groups, so that each group is carried out uniform dispatching; The Resource Block size that is used to communicate by letter for uniform dispatching information setting corresponding to each group; User terminal in each group sends corresponding uniform dispatching information.
Wherein, the described step that the grouping strategy of a plurality of user terminals is set comprises: set to divide a set condition, with the user terminal branch that will have identical or close parameter in same group.
Wherein, described setting divide set condition comprise in the following condition one of at least: channel quality information CQI comparison threshold value is set; The service quality QoS comparison threshold value is set; And setting is corresponding to the service priority of a plurality of user terminals.
Wherein, described setting divides set condition to comprise: channel quality information CQI comparison threshold value is set; The service quality QoS comparison threshold value is set; And setting is corresponding to the service priority of a plurality of user terminals.
Wherein, describedly a plurality of user terminals are divided into groups to comprise: a plurality of user terminals are divided into a plurality of CQI set according to the CQI comparison threshold value according to grouping strategy; According to QoS the water threshold value is divided into a plurality of QoS subclass with the user terminal in each CQI set; And the user terminal in each QoS subclass is divided into a plurality of service priority subclass according to service priority.
Wherein, according to the user terminal in the Resource Block size Selection CQI set, to send corresponding uniform dispatching information to selected user terminal.
Wherein, when uniform dispatching information with to the shared size sum of the distinctive schedule information at selected user terminal during greater than the Resource Block size, the user terminal of the part subclass from the CQI set in a plurality of service priority subclass of deletion.
Wherein, when the shared size of uniform dispatching information and distinctive schedule information during greater than the Resource Block size, the user terminal of the part subclass from the CQI set in a plurality of QoS subclass of deletion.
Wherein, when the shared size of uniform dispatching information and distinctive schedule information during, revise the Resource Block size, and again amended Resource Block size and above-mentioned shared size are compared greater than the Resource Block size.
Wherein, when the shared size of uniform dispatching information and distinctive schedule information during, carry out size and fill less than the Resource Block size.
Wherein, Send in the step of corresponding uniform dispatching information at the user terminal in each group; Also comprise: uniform dispatching information and the distinctive schedule information to each specific user terminal are merged into the merging schedule information, uniform dispatching information is sent to each specific user terminal with merging schedule information.
In addition, the invention allows for the device of uniform dispatching in a kind of up-link power control, comprising: grouping strategy is provided with module, is used to be provided with the grouping strategy of a plurality of user terminals; Grouping module is used for according to grouping strategy a plurality of user terminals being divided into groups, so that each group is carried out uniform dispatching; The Resource Block size is provided with module, is used to the Resource Block size that the uniform dispatching information setting corresponding to each group is used to communicate by letter; Sending module is used for sending corresponding uniform dispatching information to the user terminal of each group.
The present invention passes through channel quality information (ChannelQuality Information in up-link power control; CQI), service quality (Quality of Service; QoS), service priority message produces user terminal (the User Terminal of the control signaling with the control of same uplink power; UT) divide into groups, use identical as far as possible schedule information to carry out uniform dispatching to all user terminals (UT) in dividing into groups, under the prerequisite that does not influence the up-link power control efficiency; Through the minimizing of schedule information, effectively reduce the expense of system.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute qualification of the present invention.In the accompanying drawings:
Fig. 1 is the first half according to the flow chart of the method for uniform dispatching in the up-link power control of the present invention.
Fig. 2 is according to the latter half of the flow chart of the method for uniform dispatching in the up-link power control of the present invention (in one page, being difficult to show whole flow charts, so divide two figure to show).
Fig. 3 is the block diagram according to the device of uniform dispatching in the up-link power control of the present invention.
Embodiment
In order to make the object of the invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
The present invention relates to cordless communication network; Relate in particular to a kind of user terminal (UT) grouping that in up-link power control, produces control signaling with the control of same uplink power through channel quality channel (CQI), service quality (QoS), service priority message; Use identical as far as possible schedule information to carry out uniform dispatching to all user terminals (UT) in dividing into groups; Under the prerequisite that does not influence the up-link power control efficiency; Through the minimizing of schedule information, effectively reduce the expense of system.
Fig. 1 is that the practical implementation step is following according to the flow chart of the method for uniform dispatching in the up-link power control of the present invention:
Step 101: base station (BS) is provided with channel quality information (CQI) comparison threshold value, and initialization;
Step 102: base station (BS) is provided with service quality (QoS) comparison threshold value, and initialization;
Step 103: base station (BS) is provided with service priority;
Step 104: base station (BS) is divided into the set of channel quality information (CQI) homogeneity according to channel quality information (CQI) comparison threshold value with user terminal (UT);
Step 105: base station (BS) classifies to the user terminal (UT) in the set of each channel quality information (CQI) homogeneity according to service quality (QoS) sign, generates user terminal (UT) service quality (QoS) homogeneity subclass;
Step 106: base station (BS) classifies to service quality (QoS) homogeneity subclass according to service priority, forms service priority homogeneity subclass;
Step 107: base station (BS) is provided with the Resource Block size that transmits uniform dispatching information;
Step 108: base station (BS) is according to the user terminal (UT) in the set of uniform dispatching information resources piece size Selection channel quality information (CQI) homogeneity.
Below as shown in Figure 2, step 109 when the shared Resource Block size of the uniform dispatching information of the user terminal of selecting (UT) and distinctive schedule information during greater than the Resource Block size that is provided with in advance, forwards step 110 to, otherwise, forward step 114 to;
Step 110: base station (BS) user terminal (UT) of deletion service priority homogeneity subclass from channel quality information (CQI) homogeneity set;
Step 111: the shared Resource Block size of the uniform dispatching information of the user terminal of selection (UT) and distinctive schedule information forwards step 112 to, otherwise forwards step 114 to during greater than the Resource Block size that is provided with in advance;
Step 112: base station (BS) be the user terminal (UT) in the set of deletion service quality (QoS) homogeneity from the set of channel quality information (CQI) homogeneity;
Step 113: the shared Resource Block size of the uniform dispatching information of the user terminal of selection (UT) and distinctive schedule information forwards step 115 to, otherwise forwards step 114 to during greater than the Resource Block size that is provided with in advance;
Step 114: base station (BS) revises the uniform dispatching Resource Block size that is provided with in advance, and returns step 8;
Step 115: base station (BS) fills less than the department of the Resource Block size that is provided with in advance the uniform dispatching information and the shared Resource Block of distinctive schedule information of the user terminal (UT) of selection;
Step 116: base station (BS) merges the final uniform dispatching information of formation to the uniform dispatching information and the distinctive schedule information of the user terminal (UT) of selection;
Step 117: base station (BS) notifies the uniform dispatching information of the user terminal (UT) of all uniform dispatching.
As shown in Figure 3, be the block diagram of the device of uniform dispatching in the up-link power control according to the present invention.Wherein, comprising: grouping strategy is provided with module, is used to be provided with the grouping strategy of a plurality of user terminals; Grouping module is used for according to grouping strategy to a plurality of user terminals divide into groups (group 1, group 2), so that each group is carried out uniform dispatching; The Resource Block size is provided with module, is used to the Resource Block size that the uniform dispatching information setting corresponding to each group is used to communicate by letter; Sending module is used for sending corresponding uniform dispatching information to the user terminal of each group.
Adopt the method for the invention and device; Compared with prior art; In up-link power control, produce user terminal (UT) grouping of control signaling with the control of same uplink power through channel quality information (CQI), service quality (QoS), service priority message; Use identical as far as possible schedule information to carry out uniform dispatching to all user terminals (UT) in dividing into groups; Under the prerequisite that does not influence the up-link power control efficiency,, effectively reduce the expense of system through the minimizing of schedule information.
Setting through channel quality information (CQI) homogeneity user terminal (UT) set, service quality (QoS) homogeneity user terminal (UT) subclass, service priority homogeneity user terminal (UT) subclass; The user terminal (UT) of having guaranteed each uniform dispatching has identical characteristic, helps improving the efficient of up-link power control uniform dispatching.
The uniform dispatching Resource Block size that is provided with in advance its objective is user terminal (UT) number in order to limit uniform dispatching, prevents that user terminal (UT) number of uniform dispatching is too much, brings bigger overhead.
The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.