CN111836342B - Resident cell selection method, device and terminal - Google Patents
Resident cell selection method, device and terminal Download PDFInfo
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- CN111836342B CN111836342B CN201910299368.5A CN201910299368A CN111836342B CN 111836342 B CN111836342 B CN 111836342B CN 201910299368 A CN201910299368 A CN 201910299368A CN 111836342 B CN111836342 B CN 111836342B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/20—Selecting an access point
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The invention provides a method, a device and a terminal for selecting a resident cell, wherein the method comprises the following steps: acquiring power reference information of a cell and Reference Signal Received Power (RSRP) of the cell; selecting a resident cell of the terminal according to the power reference information of the cell and the RSRP of the cell; according to the embodiment of the invention, the terminal selects the resident cell for the terminal according to the power reference information of the cell and the RSRP of the cell, so that the problem that the transmission power and the power consumption of the terminal are increased due to the fact that the terminal selects an unsuitable resident cell in the existing resident cell selecting mode is solved.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method, an apparatus, and a terminal for selecting a residential cell.
Background
In the existing LTE (Long Term Evolution) technology, a terminal selects a camping cell by considering a downlink received Signal level RSRP (Reference Signal Receiving Power). Specifically, the method comprises the following steps: and the terminal sorts the candidate cells which accord with the residence condition, and the sorting principle is that the higher the signal level is, the more front the cell is sorted, and the terminal selects the candidate cell with the most front sorting for residence.
Existing cellular networks cover primarily terrestrial mobile communication subscribers. With the development of mobile communication, mobile communication coverage scenes and requirements are increasing, and the coverage scenes comprise special scenes such as high-altitude coverage of unmanned planes and airplane airlines, and sea coverage, so that the network topology and structure may be more complex.
In these special scenarios, coverage may be performed by using a private network or a private base station, etc. to obtain better performance. However, the existing method for selecting the camping cell only considers the signal level factor, which may cause the terminal to camp on an unsuitable cell. For example, since a base station covering high altitude typically has higher transmit power, terrestrial terminals camp on a cell covering the high altitude terminals, in which case, although the terrestrial terminal downlink receive channel level is better, terminal uplink transmission may require higher transmit power, thereby increasing power consumption and uplink interference. In short, the existing method for selecting the camping cell cannot avoid the problem that the transmission power and power consumption of the terminal are increased due to the fact that the terminal camps in an unsuitable cell.
Disclosure of Invention
The embodiment of the invention aims to provide a resident cell selection method, a resident cell selection device and a terminal, and aims to solve the problem that the transmission power and the power consumption of the terminal are increased in the existing resident cell selection mode.
In order to solve the above problem, an embodiment of the present invention provides a method for selecting a camped cell, which is applied to a terminal, and includes:
acquiring power reference information of a cell and Reference Signal Received Power (RSRP) of the cell;
and selecting the resident cell of the terminal according to the power reference information of the cell and the RSRP of the cell.
Wherein the method further comprises:
acquiring a first power range;
the selecting the camping cell of the terminal according to the power reference information of the cell and the RSRP of the cell comprises:
and selecting the resident cell of the terminal according to the power reference information of the cell, the first power range and the RSRP of the cell.
Wherein the power reference information of each cell comprises: a transmit power of the cell;
the selecting a camping cell of the terminal according to the power reference information of the cell, the first power range and the RSRP of the cell comprises:
determining the path loss of the cell according to the transmitting power of the cell and the RSRP of the cell;
determining a ranking reference value of the cell according to the RSRP of the cell and a target adjustment value of the cell power;
obtaining a difference value between the ranking reference value and the maximum ranking reference value of each cell, and determining the cell with the difference value in the first power range as a candidate cell;
and selecting a cell with the minimum path loss from the candidate cells as a resident cell of the terminal.
Wherein the power reference information of each cell comprises: a transmit power of the cell and a target receive power of the cell;
the selecting a camping cell of the terminal according to the power reference information of the cell, the first power range and the RSRP of the cell comprises:
determining the transmitting power of the terminal according to the transmitting power of the cell, the target receiving power of the cell and the RSRP of the cell;
determining a ranking reference value of the cell according to the RSRP of the cell and a target adjustment value of the cell power;
obtaining a difference value between the ranking reference value and the maximum ranking reference value of each cell, and determining a cell with the difference value in the first power range as a candidate cell;
and selecting the resident cell of the terminal from the candidate cells.
Wherein the selecting the camping cell of the terminal from the candidate cells comprises:
if at least one target cell exists in the candidate cells, the transmitting power of the terminal to the target cell is greater than or equal to the sum of the target receiving power of the target cell and the path loss of the target cell, and a cell corresponding to the minimum transmitting power is selected from the at least one target cell to be a resident cell of the terminal;
if the target cell does not exist in the candidate cells, selecting a cell with the minimum target difference value from the candidate cells as a resident cell of the terminal; and the target difference is the difference between the target receiving power of the cell and the path loss of the cell minus the transmitting power of the terminal to the cell.
Wherein the power reference information of each cell comprises: a transmit power of the cell;
the selecting the resident cell of the terminal according to the power reference information of the cell and the RSRP of the cell comprises:
determining the path loss of the cell according to the transmitting power of the cell and the RSRP of the cell;
selecting a resident cell of the terminal according to the path loss of the cell; or selecting the resident cell of the terminal according to the RSRP of the cell.
Wherein, according to the path loss of the cell, selecting the resident cell of the terminal includes:
and selecting the cell with the minimum path loss as the resident cell of the terminal according to the path loss of the cell.
Wherein the power reference information of each cell comprises: a transmit power of the cell and a target receive power of the cell;
the selecting the camping cell of the terminal according to the power reference information of the cell and the RSRP of the cell comprises:
determining the transmitting power of the terminal according to the transmitting power of the cell, the target receiving power of the cell and the RSRP of the cell;
selecting a resident cell of the terminal according to the transmitting power of the terminal; or selecting the resident cell of the terminal according to the RSRP of the cell.
Wherein, according to the transmitting power of the terminal, selecting the resident cell of the terminal comprises:
and selecting the cell corresponding to the minimum transmitting power as the resident cell of the terminal according to the transmitting power of the terminal.
Wherein, according to the RSRP of the cell, selecting the resident cell of the terminal comprises:
determining a ranking reference value of the cell according to the RSRP of the cell and a target adjustment value of the cell power;
and selecting the cell with the maximum sequencing reference value as the resident cell of the terminal according to the sequencing reference value of the cell.
Wherein the determining the transmission power of the terminal according to the transmission power of the cell, the target received power of the cell and the RSRP of the cell comprises:
determining the transmitting power Pu of the terminal to a cell according to a first formula and a second formula; wherein the first formula is:
Pue＝min{Pcmax，(Ptarget+PL)}；
the second formula is:
PL＝Ptx-RSRP；
the Pu is the transmitting power of the terminal to the cell; pcmax is the transmission power of the terminal configured by the terminal, ptarget is the target receiving power of the cell, and PL is the path loss of the cell; ptx is the transmit power of the cell; and the RSRP is the RSRP of the cell.
The embodiment of the invention also provides a terminal, which comprises a processor and a transceiver, wherein the transceiver is used for executing the following processes:
acquiring power reference information of a cell and Reference Signal Received Power (RSRP) of the cell;
the processor is used for executing the following processes:
and selecting the resident cell of the terminal according to the power reference information of the cell and the RSRP of the cell.
Wherein the transceiver is further configured to:
acquiring a first power range;
the processor is further configured to:
and selecting the resident cell of the terminal according to the power reference information of the cell, the first power range and the RSRP of the cell.
Wherein the power reference information of each cell comprises: a transmit power of the cell;
the processor is further configured to:
determining the path loss of the cell according to the transmitting power of the cell and the RSRP of the cell;
determining a ranking reference value of the cell according to the RSRP of the cell and a target adjustment value of the cell power;
obtaining a difference value between the ranking reference value and the maximum ranking reference value of each cell, and determining the cell with the difference value in the first power range as a candidate cell;
and selecting a cell with the minimum path loss from the candidate cells as a resident cell of the terminal.
Wherein the power reference information of each cell comprises: a transmit power of the cell and a target receive power of the cell;
the processor is further configured to:
determining the transmitting power of the terminal according to the transmitting power of the cell, the target receiving power of the cell and the RSRP of the cell;
determining a ranking reference value of the cell according to the RSRP of the cell and a target adjustment value of the cell power;
obtaining a difference value between the ranking reference value and the maximum ranking reference value of each cell, and determining the cell with the difference value in the first power range as a candidate cell;
and selecting the resident cell of the terminal from the candidate cells.
Wherein the processor is further configured to:
if at least one target cell exists in the candidate cells, the transmitting power of the terminal to the target cell is greater than or equal to the sum of the target receiving power of the target cell and the path loss of the target cell, and a cell corresponding to the minimum transmitting power is selected from the at least one target cell to be a resident cell of the terminal;
if the target cell does not exist in the candidate cells, selecting a cell with the minimum target difference value from the candidate cells as a resident cell of the terminal; and the target difference is the difference between the target receiving power of the cell and the path loss of the cell minus the transmitting power of the terminal to the cell.
Wherein the power reference information of each cell comprises: a transmit power of the cell;
the processor is further configured to:
determining the path loss of the cell according to the transmitting power of the cell and the RSRP of the cell;
selecting a resident cell of the terminal according to the path loss of the cell; or selecting the resident cell of the terminal according to the RSRP of the cell.
Wherein the processor is further configured to:
and selecting the cell with the minimum path loss as the resident cell of the terminal according to the path loss of the cell.
Wherein the power reference information of each cell comprises: a transmit power of the cell and a target receive power of the cell;
the processor is further configured to:
determining the transmitting power of the terminal according to the transmitting power of the cell, the target receiving power of the cell and the RSRP of the cell;
selecting a resident cell of the terminal according to the transmitting power of the terminal; or selecting the resident cell of the terminal according to the RSRP of the cell.
Wherein the processor is further configured to:
and selecting the cell corresponding to the minimum transmitting power as the resident cell of the terminal according to the transmitting power of the terminal.
Wherein the processor is further configured to:
determining a ranking reference value of the cell according to the RSRP of the cell and a target adjustment value of the cell power;
and selecting the cell with the largest ranking reference value as the resident cell of the terminal according to the ranking reference value of the cell.
Wherein the processor is further configured to:
determining the transmitting power Pu of the terminal to a cell according to a first formula and a second formula; wherein the first formula is:
Pue＝min{Pcmax，(Ptarget+PL)}；
the second formula is:
PL＝Ptx-RSRP；
the Pu is the transmitting power of the terminal to the cell; pcmax is the transmission power of the terminal configured by the terminal, ptarget is the target receiving power of the cell, and PL is the path loss of the cell; ptx is the transmit power of the cell; the RSRP is the RSRP of the cell.
The embodiment of the invention also provides a device for selecting the resident cell, which is applied to a terminal and comprises the following steps:
the first acquisition module is used for acquiring power reference information of a cell and Reference Signal Received Power (RSRP) of the cell;
and the selection module is used for selecting the resident cell of the terminal according to the power reference information of the cell and the RSRP of the cell.
An embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program is executed by a processor to implement the steps in the method for selecting a camped cell as described above.
The technical scheme of the invention at least has the following beneficial effects:
in the method, the device and the terminal for selecting the resident cell, the terminal selects the resident cell for the terminal according to the power reference information of the cell and the RSRP of the cell, and the problem that the transmission power and the power consumption of the terminal are increased due to the fact that the terminal selects an improper resident cell in the existing resident cell selecting mode is solved.
Drawings
Fig. 1 is a flowchart illustrating steps of a method for selecting a camped cell according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a terminal according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a device for selecting a camped cell according to an embodiment of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, an embodiment of the present invention provides a method for selecting a camped cell, which is applied to a terminal, and includes:
and 11, acquiring power reference information of a cell and Reference Signal Received Power (RSRP) of the cell.
In this step, the cell includes a serving cell and a neighboring cell of the terminal. The RSRP of the cell is obtained by measuring the reference signals of the cell by the terminal. And the power reference information of the cell can be broadcast by the network equipment through a system message or issued by the network equipment through dedicated signaling.
And 12, selecting the resident cell of the terminal according to the power reference information of the cell and the RSRP of the cell.
In the embodiment of the invention, the terminal needs to consider the RSRP of the cell and also needs to refer to the power reference information of the cell sent by the network side in the process of selecting the resident cell, so that a proper resident cell is selected for the terminal.
As an alternative embodiment, the power reference information of each cell includes: a transmit power of the cell; e.g. the transmit power of the reference signal (SSB, synchronization signal block), in dBm. Accordingly, step 12 comprises:
determining the path loss of the cell according to the transmitting power of the cell and the RSRP of the cell;
selecting a resident cell of the terminal according to the path loss of the cell; or selecting the resident cell of the terminal according to the RSRP of the cell.
Wherein, according to the path loss of the cell, selecting the resident cell of the terminal includes:
and selecting the cell with the minimum path loss as the resident cell of the terminal according to the path loss of the cell.
As another alternative, the power reference information of each cell includes: a transmit power of the cell and a target receive power of the cell; for example, the transmission power of a cell is the transmission power of a reference signal, and the unit is dBm; the target received power of a cell is the power of the terminal that the network expects to receive, in dBm.
Accordingly, step 12 comprises:
determining the transmitting power of the terminal according to the transmitting power of the cell, the target receiving power of the cell and the RSRP of the cell;
selecting a resident cell of the terminal according to the transmitting power of the terminal; or selecting the resident cell of the terminal according to the RSRP of the cell.
Wherein, according to the transmitting power of the terminal, selecting the resident cell of the terminal comprises:
and selecting the cell corresponding to the minimum transmitting power as the resident cell of the terminal according to the transmitting power of the terminal.
It should be noted that, the determining the transmission power of the terminal according to the transmission power of the cell, the target received power of the cell, and the RSRP of the cell includes:
determining the transmitting power Pu of the terminal to a cell according to a first formula and a second formula; wherein the first formula is:
Pue＝min{Pcmax，(Ptarget+PL)}；
the second formula is:
PL＝Ptx-RSRP；
the Pu is the transmitting power of the terminal to the cell; pcmax is the transmission power of the terminal configured by the terminal, ptarget is the target receiving power of the cell, and PL is the path loss of the cell; ptx is the transmit power of the cell; and the RSRP is the RSRP of the cell.
Wherein, pcmax has a value range Pcmax, L < = Pcmax < = Pcmax, H.
Pcmax,L＝MIN{Pemax,Ppowerclass-MPR}；
Pcmax,H＝MIN{Pemax,Ppowerclass}；
Where Pemax is the maximum transmission power allowed by the network for the terminal, ppowerclass is the maximum transmission power supported by the terminal's capability, and MPR is the maximum value of the terminal's power backoff due to various reasons.
Optionally, selecting a camping cell of the terminal according to the RSRP of the cell includes:
determining a ranking reference value of the cell according to the RSRP of the cell and a target adjustment value of the cell power;
and selecting the cell with the maximum sequencing reference value as the resident cell of the terminal according to the sequencing reference value of the cell.
It should be noted that the target adjustment value of the cell power includes: offset value offset, hysteresis value Q. The target adjustment value may be broadcast by the network; the specific calculation method of the ranking reference value can be as follows: the ranking reference value R = RSRP-offset for the cell; or, the ranking reference value R = RSRP + Q-offset for the cell.
The terminal ranks the cells according to the computed ranking reference value R according to a certain rule (for example, the higher the R is, the higher the ranking of the cells is), and in this case, the terminal selects the cell with the highest ranking for camping.
As yet another alternative embodiment, the method further comprises:
acquiring a first power range;
in this step, the first power range may be broadcasted by the network device through a system message, or issued by the network device through a dedicated signaling; the first power range is in dB. It should be noted that the first power feedback and the power reference signal of the cell may be sent through the same signaling, may also be sent through different signaling, or may be broadcast through the same system information, or may also be broadcast through different system information, which is not limited herein.
Accordingly, step 12 comprises:
step 121, selecting a camping cell of the terminal according to the power reference information of the cell, the first power range and the RSRP of the cell.
As a preferred embodiment, the power reference information of each cell includes: a transmit power of the cell; e.g. the transmit power of the reference signal (SSB, synchronization signal block), in dBm. Accordingly, step 121 includes:
determining the path loss of the cell according to the transmitting power of the cell and the RSRP of the cell;
determining a ranking reference value of the cell according to the RSRP of the cell and a target adjustment value of the cell power;
obtaining a difference value between the ranking reference value and the maximum ranking reference value of each cell, and determining the cell with the difference value in the first power range as a candidate cell;
and selecting a cell with the minimum path loss from the candidate cells as a resident cell of the terminal.
Preferably, PL = Ptx-RSRP;
wherein PL is the path loss of the cell; ptx is the transmit power of the cell; and the RSRP is the RSRP of the cell.
It should be noted that the target adjustment value of the cell power includes: offset value offset, hysteresis value Q. The target adjustment value may be broadcast by the network; the specific calculation method of the ranking reference value can be as follows: the ranking reference value R = RSRP-offset of the cell; or, the ranking reference value R = RSRP + Q-offset for the cell.
And the terminal ranks the cells according to a certain rule according to the calculated ranking reference value R (for example, the higher the R is, the higher the cell ranking is), and in this case, the terminal selects the cell with the minimum path loss as the resident cell in the cells of which the difference value with the ranking reference value R of the highest ranking cell is out of the first power range.
As another preferred embodiment, the power reference information of each cell includes: a transmit power of the cell and a target receive power of the cell; for example, the transmission power of a cell is the transmission power of a reference signal, and the unit is dBm; the target received power of a cell is the power of the terminal that the network expects to receive, in dBm. Accordingly, step 121 includes:
determining the transmitting power of the terminal according to the transmitting power of the cell, the target receiving power of the cell and the RSRP of the cell;
determining a ranking reference value of the cell according to the RSRP of the cell and a target adjustment value of the cell power;
obtaining a difference value between the ranking reference value and the maximum ranking reference value of each cell, and determining a cell with the difference value in the first power range as a candidate cell;
and selecting the resident cell of the terminal from the candidate cells.
It should be noted that the determining the transmission power of the terminal according to the transmission power of the cell, the target received power of the cell, and the RSRP of the cell includes:
determining the transmitting power Pu of the terminal to a cell according to a first formula and a second formula; wherein the first formula is:
Pue＝min{Pcmax，(Ptarget+PL)}；
the second formula is:
PL＝Ptx-RSRP；
the Pu is the transmitting power of the terminal to the cell; pcmax is the transmission power of the terminal configured by the terminal, ptarget is the target receiving power of the cell, and PL is the path loss of the cell; ptx is the transmit power of the cell; and the RSRP is the RSRP of the cell.
Wherein, pcmax has a value range Pcmax, L < = Pcmax < = Pcmax, H.
Pcmax,L＝MIN{Pemax,Ppowerclass-MPR}；
Pcmax,H＝MIN{Pemax,Ppowerclass}；
Where Pemax is the maximum transmission power allowed by the network for the terminal, ppowerclass is the maximum transmission power supported by the terminal's capability, and MPR is the maximum value of the terminal's power backoff due to various reasons.
It should be noted that the target adjustment value of the cell power includes: offset value offset, hysteresis value Q. The target adjustment value may be broadcast by the network; the specific calculation method of the ranking reference value can be as follows: the ranking reference value R = RSRP-offset for the cell; or, the ranking reference value R = RSRP + Q-offset for the cell.
Wherein the selecting the resident cell of the terminal from the candidate cells comprises:
if at least one target cell exists in the candidate cells, the transmitting power of the terminal to the target cell is greater than or equal to the sum of the target receiving power of the target cell and the path loss of the target cell, and a cell corresponding to the minimum transmitting power is selected from the at least one target cell as a resident cell of the terminal;
in other words, if Pcmax > = Ptarget + PL of a certain cell exists in cells within the "first power range" from the R value of the highest ranked cell, that is, pue = Ptarget + PL, the terminal selects the cell with the minimum terminal transmission power Pue as the camping cell in the above cells.
If the target cell does not exist in the candidate cells, selecting a cell with the minimum target difference value from the candidate cells as a resident cell of the terminal; the target difference is the difference between the target received power of the cell and the path loss of the cell minus the transmitting power of the terminal to the cell.
In other words, if all cells are within the cells within the "first power range" and the difference value from the R value of the highest ranked cell is Pcmax < Ptarget + PL, i.e., pue = Pcmax, the terminal selects the cell with the smallest difference value { (Ptarget + PL) -Pcmax } from the above cells for camping.
In summary, in the embodiments of the present invention, the terminal selects the camping cell for the terminal according to the power reference information of the cell and the RSRP of the cell, which solves the problem of increase in the transmission power and power consumption of the terminal due to selection of an unsuitable camping cell by the terminal in the existing method for selecting the camping cell.
As shown in fig. 2, an embodiment of the present invention further provides a terminal, which includes a processor 200 and a transceiver 210, where the transceiver 210 is configured to perform the following processes:
acquiring power reference information of a cell and Reference Signal Received Power (RSRP) of the cell;
the processor 200 is configured to perform the following processes:
and selecting the resident cell of the terminal according to the power reference information of the cell and the RSRP of the cell.
Optionally, in the foregoing embodiment of the present invention, the transceiver 210 is further configured to:
acquiring a first power range;
the processor 200 is further configured to:
and selecting the resident cell of the terminal according to the power reference information of the cell, the first power range and the RSRP of the cell.
Optionally, in the foregoing embodiment of the present invention, the power reference information of each cell includes: a transmit power of the cell;
the processor 200 is further configured to:
determining the path loss of the cell according to the transmitting power of the cell and the RSRP of the cell;
determining a ranking reference value of the cell according to the RSRP of the cell and a target adjustment value of the cell power;
obtaining a difference value between the ranking reference value and the maximum ranking reference value of each cell, and determining a cell with the difference value in the first power range as a candidate cell;
and selecting a cell with the minimum path loss from the candidate cells as a resident cell of the terminal.
Optionally, in the foregoing embodiment of the present invention, the power reference information of each cell includes: a transmit power of the cell and a target receive power of the cell;
the processor 200 is further configured to:
determining the transmitting power of the terminal according to the transmitting power of the cell, the target receiving power of the cell and the RSRP of the cell;
determining a ranking reference value of the cell according to the RSRP of the cell and a target adjustment value of the cell power;
obtaining a difference value between the ranking reference value and the maximum ranking reference value of each cell, and determining the cell with the difference value in the first power range as a candidate cell;
and selecting the resident cell of the terminal from the candidate cells.
Optionally, in the foregoing embodiment of the present invention, the processor 200 is further configured to:
if at least one target cell exists in the candidate cells, the transmitting power of the terminal to the target cell is greater than or equal to the sum of the target receiving power of the target cell and the path loss of the target cell, and a cell corresponding to the minimum transmitting power is selected from the at least one target cell as a resident cell of the terminal;
if the target cell does not exist in the candidate cells, selecting a cell with the minimum target difference value from the candidate cells as a resident cell of the terminal; and the target difference is the difference between the target receiving power of the cell and the path loss of the cell minus the transmitting power of the terminal to the cell.
Optionally, in the foregoing embodiment of the present invention, the power reference information of each cell includes: a transmit power of the cell;
the processor is further configured to:
determining the path loss of the cell according to the transmitting power of the cell and the RSRP of the cell;
selecting a resident cell of the terminal according to the path loss of the cell; or selecting the resident cell of the terminal according to the RSRP of the cell.
Optionally, in the above embodiment of the present invention, the processor 200 is further configured to:
and selecting the cell with the minimum path loss as the resident cell of the terminal according to the path loss of the cell.
Optionally, in the above embodiment of the present invention, the power reference information of each cell includes: a transmit power of the cell and a target receive power of the cell;
the processor 200 is further configured to:
determining the transmitting power of the terminal according to the transmitting power of the cell, the target receiving power of the cell and the RSRP of the cell;
selecting a resident cell of the terminal according to the transmitting power of the terminal; or selecting the resident cell of the terminal according to the RSRP of the cell.
Optionally, in the above embodiment of the present invention, the processor 200 is further configured to:
and selecting the cell corresponding to the minimum transmitting power as the resident cell of the terminal according to the transmitting power of the terminal.
Optionally, in the foregoing embodiment of the present invention, the processor 200 is further configured to:
determining a ranking reference value of the cell according to the RSRP of the cell and a target adjustment value of the cell power;
and selecting the cell with the largest ranking reference value as the resident cell of the terminal according to the ranking reference value of the cell.
Optionally, in the foregoing embodiment of the present invention, the processor 200 is further configured to:
determining the transmitting power Pu of the terminal to a cell according to a first formula and a second formula; wherein the first formula is:
Pue＝min{Pcmax，(Ptarget+PL)}；
the second formula is:
PL＝Ptx-RSRP；
the Pu is the transmitting power of the terminal to the cell; pcmax is the transmission power of the terminal configured by the terminal, ptarget is the target receiving power of the cell, and PL is the path loss of the cell; ptx is the transmit power of the cell; and the RSRP is the RSRP of the cell.
In summary, in the embodiments of the present invention, the terminal selects the camping cell for the terminal according to the power reference information of the cell and the RSRP of the cell, which solves the problem of increase in the transmission power and power consumption of the terminal due to selection of an unsuitable camping cell by the terminal in the existing method for selecting the camping cell.
It should be noted that, the terminal provided in the embodiment of the present invention is a terminal capable of executing the method for selecting a camped cell, and all embodiments of the method for selecting a camped cell are applicable to the terminal, and can achieve the same or similar beneficial effects.
As shown in fig. 3, an embodiment of the present invention further provides a device for selecting a camped cell, which is applied to a terminal, and includes:
a first obtaining module 31, configured to obtain power reference information of a cell and reference signal received power RSRP of the cell;
a selecting module 32, configured to select a camped cell of the terminal according to the power reference information of the cell and the RSRP of the cell.
Optionally, in the above embodiment of the present invention, the apparatus further includes:
the second acquisition module is used for acquiring the first power range;
the selection module comprises:
and the selection submodule is used for selecting the resident cell of the terminal according to the power reference information of the cell, the first power range and the RSRP of the cell.
Optionally, in the above embodiment of the present invention, the power reference information of each cell includes: a transmit power of the cell;
the selection submodule includes:
the first sub-module is used for determining the path loss of the cell according to the transmitting power of the cell and the RSRP of the cell;
the second submodule is used for determining a sequencing reference value of the cell according to the RSRP of the cell and the target adjustment value of the cell power;
the third sub-module is used for acquiring the difference value between the ranking reference value and the maximum ranking reference value of each cell and determining the cell with the difference value in the first power range as a candidate cell;
and the fourth sub-module is used for selecting a cell with the minimum path loss from the candidate cells as the resident cell of the terminal.
Optionally, in the foregoing embodiment of the present invention, the power reference information of each cell includes: a transmit power of the cell and a target receive power of the cell;
the selection submodule includes:
a fifth sub-module, configured to determine the transmit power of the terminal according to the transmit power of the cell, the target receive power of the cell, and the RSRP of the cell;
a sixth sub-module, configured to determine a ranking reference value of the cell according to the RSRP of the cell and the target adjustment value of the cell power;
a seventh sub-module, configured to obtain a difference between the ranking reference value and the maximum ranking reference value of each cell, and determine a cell with the difference within the first power range as a candidate cell;
an eighth sub-module, configured to select a camped cell of the terminal from the candidate cells.
Optionally, in the above embodiment of the present invention, the eighth sub-module includes:
a first unit, configured to select, if there is at least one target cell in the candidate cells, a cell corresponding to a minimum transmit power from the at least one target cell as a cell where the terminal resides, where a transmit power of the terminal to the target cell is greater than or equal to a sum of a target receive power of the target cell and a path loss of the target cell;
a second unit, configured to select, if the target cell does not exist in the candidate cells, a cell with a smallest target difference from the candidate cells as a camped cell of the terminal; and the target difference is the difference between the target receiving power of the cell and the path loss of the cell minus the transmitting power of the terminal to the cell.
Optionally, in the foregoing embodiment of the present invention, the power reference information of each cell includes: a transmit power of the cell;
the selection module comprises:
a third unit, configured to determine a path loss of the cell according to the transmission power of the cell and the RSRP of the cell;
a fourth unit, configured to select a resident cell of the terminal according to the path loss of the cell; or selecting the resident cell of the terminal according to the RSRP of the cell.
Optionally, in the embodiment of the present invention, the fourth unit is specifically configured to:
and selecting the cell with the minimum path loss as the resident cell of the terminal according to the path loss of the cell.
Optionally, in the foregoing embodiment of the present invention, the power reference information of each cell includes: a transmit power of the cell and a target receive power of the cell;
the selection module comprises:
a fifth unit, configured to determine the transmit power of the terminal according to the transmit power of the cell, the target receive power of the cell, and the RSRP of the cell;
a sixth unit, configured to select a cell where the terminal resides according to the transmission power of the terminal; or selecting the resident cell of the terminal according to the RSRP of the cell.
Optionally, in the foregoing embodiment of the present invention, the sixth unit is further configured to:
and selecting the cell corresponding to the minimum transmitting power as the resident cell of the terminal according to the transmitting power of the terminal.
Optionally, in the above embodiment of the present invention, the fourth unit or the sixth unit is further configured to:
determining a ranking reference value of the cell according to the RSRP of the cell and a target adjustment value of the cell power;
and selecting the cell with the largest ranking reference value as the resident cell of the terminal according to the ranking reference value of the cell.
Optionally, in the above embodiment of the present invention, the fifth submodule or the fifth unit is further configured to:
determining the transmitting power Pu of the terminal to a cell according to a first formula and a second formula; wherein the first formula is:
Pue＝min{Pcmax，(Ptarget+PL)}；
the second formula is:
PL＝Ptx-RSRP；
the Pu is the transmitting power of the terminal to the cell; pcmax is the transmission power of the terminal configured by the terminal, ptarget is the target receiving power of the cell, and PL is the path loss of the cell; ptx is the transmit power of the cell; the RSRP is the RSRP of the cell.
In summary, in the embodiments of the present invention, the terminal selects the camping cell for the terminal according to the power reference information of the cell and the RSRP of the cell, which solves the problem of increase in the transmission power and power consumption of the terminal due to selection of an unsuitable camping cell by the terminal in the existing method for selecting the camping cell.
It should be noted that the selection apparatus for a camped cell provided in the embodiments of the present invention is an apparatus capable of executing the selection method for a camped cell, and all embodiments of the selection method for a camped cell are applicable to the apparatus and can achieve the same or similar beneficial effects.
An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored, and when the computer program is executed by a processor, the computer program implements each process in the above-described resident cell selection method embodiment, and can achieve the same technical effect, and in order to avoid repetition, details are not described here again. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-readable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block or blocks.
These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means which implement the function specified in the flowchart and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart and/or block diagram block or blocks.
While the foregoing is directed to the preferred embodiment of the present invention, it will be appreciated by those skilled in the art that various changes and modifications may be made therein without departing from the principles of the invention as set forth in the appended claims.
Claims (22)
1. A method for selecting a resident cell is applied to a terminal, and is characterized by comprising the following steps:
acquiring power reference information of a cell and Reference Signal Received Power (RSRP) of the cell;
selecting a resident cell of the terminal according to the power reference information of the cell and the RSRP of the cell;
the method further comprises the following steps:
acquiring a first power range;
the selecting the resident cell of the terminal according to the power reference information of the cell and the RSRP of the cell comprises:
and selecting the resident cell of the terminal according to the power reference information of the cell, the first power range and the RSRP of the cell.
2. The method of claim 1, wherein the power reference information for each cell comprises: a transmit power of the cell;
the selecting a camping cell of the terminal according to the power reference information of the cell, the first power range and the RSRP of the cell comprises:
determining the path loss of the cell according to the transmitting power of the cell and the RSRP of the cell;
determining a ranking reference value of the cell according to the RSRP of the cell and a target adjustment value of the cell power;
obtaining a difference value between the ranking reference value and the maximum ranking reference value of the cell, and determining the cell with the difference value in the first power range as a candidate cell;
and selecting a cell with the minimum path loss from the candidate cells as a resident cell of the terminal.
3. The method of claim 1, wherein the power reference information for each cell comprises: a transmit power of the cell and a target receive power of the cell;
the selecting a camping cell of the terminal according to the power reference information of the cell, the first power range and the RSRP of the cell comprises:
determining the transmitting power of the terminal according to the transmitting power of the cell, the target receiving power of the cell and the RSRP of the cell;
determining a ranking reference value of the cell according to the RSRP of the cell and a target adjustment value of the cell power;
obtaining a difference value between the ranking reference value and the maximum ranking reference value of each cell, and determining a cell with the difference value in the first power range as a candidate cell;
and selecting the resident cell of the terminal from the candidate cells.
4. The method of claim 3, wherein the selecting the camping cell of the terminal from the candidate cells comprises:
if at least one target cell exists in the candidate cells, the transmitting power of the terminal to the target cell is greater than or equal to the sum of the target receiving power of the target cell and the path loss of the target cell, and a cell corresponding to the minimum transmitting power is selected from the at least one target cell to be a resident cell of the terminal;
if the target cell does not exist in the candidate cells, selecting a cell with the minimum target difference value from the candidate cells as a resident cell of the terminal; the target difference is the difference between the target received power of the cell and the path loss of the cell minus the transmitting power of the terminal to the cell.
5. The method of claim 1, wherein the power reference information for each cell comprises: a transmit power of the cell;
the selecting the resident cell of the terminal according to the power reference information of the cell and the RSRP of the cell comprises:
determining the path loss of the cell according to the transmitting power of the cell and the RSRP of the cell;
and selecting the resident cell of the terminal according to the path loss of the cell.
6. The method according to claim 5, wherein selecting the camping cell of the terminal according to the path loss of the cell comprises:
and selecting the cell with the minimum path loss as the resident cell of the terminal according to the path loss of the cell.
7. The method of claim 1, wherein the power reference information for each cell comprises: the transmitting power of the cell and the target receiving power of the cell;
the selecting the camping cell of the terminal according to the power reference information of the cell and the RSRP of the cell comprises:
determining the transmitting power of the terminal according to the transmitting power of the cell, the target receiving power of the cell and the RSRP of the cell;
and selecting the resident cell of the terminal according to the transmitting power of the terminal to the cell.
8. The method of claim 7, wherein selecting the camping cell of the terminal according to the transmission power of the terminal comprises:
and selecting the cell corresponding to the minimum transmitting power as the resident cell of the terminal according to the transmitting power of the terminal.
9. The method of claim 5 or 7, wherein selecting the camping cell of the terminal according to the RSRP of the cell comprises:
determining a ranking reference value of the cell according to the RSRP of the cell and a target adjustment value of the cell power;
and selecting the cell with the largest ranking reference value as the resident cell of the terminal according to the ranking reference value of the cell.
10. The method of claim 3 or 7, wherein the determining the transmit power of the terminal according to the transmit power of the cell, the target received power of the cell, and the RSRP of the cell comprises:
determining the terminal transmitting power Pu according to a first formula and a second formula; wherein the first formula is:
Pue＝min{Pcmax，(Ptarget+PL)}；
the second formula is:
PL＝Ptx-RSRP；
the Pu is the transmitting power of the terminal to the cell; pcmax is the transmission power of the terminal configured by the terminal, ptarget is the target receiving power of the cell, and PL is the path loss of the cell; ptx is the transmit power of the cell; the RSRP is the RSRP of the cell.
11. A terminal comprising a processor and a transceiver, wherein the transceiver is configured to perform the following:
acquiring power reference information of a cell and Reference Signal Received Power (RSRP) of the cell;
the processor is used for executing the following processes:
selecting a resident cell of the terminal according to the power reference information of the cell and the RSRP of the cell;
the transceiver is further configured to:
acquiring a first power range;
the processor is further configured to:
and selecting the resident cell of the terminal according to the power reference information of the cell, the first power range and the RSRP of the cell.
12. The terminal of claim 11, wherein the power reference information of each cell comprises: a transmit power of the cell;
the processor is further configured to:
determining the path loss of the cell according to the transmitting power of the cell and the RSRP of the cell;
determining a ranking reference value of the cell according to the RSRP of the cell and a target adjustment value of the cell power;
obtaining a difference value between the ranking reference value and the maximum ranking reference value of each cell, and determining the cell with the difference value in the first power range as a candidate cell;
and selecting a cell with the minimum path loss from the candidate cells as a resident cell of the terminal.
13. The terminal of claim 11, wherein the power reference information of each cell comprises: a transmit power of the cell and a target receive power of the cell;
the processor is further configured to:
determining the transmitting power of the terminal according to the transmitting power of the cell, the target receiving power of the cell and the RSRP of the cell;
determining a ranking reference value of the cell according to the RSRP of the cell and a target adjustment value of the cell power;
obtaining a difference value between the ranking reference value and the maximum ranking reference value of each cell, and determining the cell with the difference value in the first power range as a candidate cell;
and selecting the resident cell of the terminal from the candidate cells.
14. The terminal of claim 13, wherein the processor is further configured to:
if at least one target cell exists in the candidate cells, the transmitting power of the terminal to the target cell is greater than or equal to the sum of the target receiving power of the target cell and the path loss of the target cell, and a cell corresponding to the minimum transmitting power is selected from the at least one target cell as a resident cell of the terminal;
if the target cell does not exist in the candidate cells, selecting a cell with the minimum target difference value from the candidate cells as a resident cell of the terminal; the target difference is the difference between the target received power of the cell and the path loss of the cell minus the transmitting power of the terminal to the cell.
15. The terminal of claim 11, wherein the power reference information of each cell comprises: a transmit power of the cell;
the processor is further configured to:
determining the path loss of the cell according to the transmitting power of the cell and the RSRP of the cell;
and selecting the resident cell of the terminal according to the path loss of the cell.
16. The terminal of claim 15, wherein the processor is further configured to:
and selecting the cell with the minimum path loss as the resident cell of the terminal according to the path loss of the cell.
17. The terminal of claim 11, wherein the power reference information of each cell comprises: a transmit power of the cell and a target receive power of the cell;
the processor is further configured to:
determining the transmitting power of the terminal according to the transmitting power of the cell, the target receiving power of the cell and the RSRP of the cell;
and selecting the resident cell of the terminal according to the transmitting power of the terminal pair.
18. The terminal of claim 17, wherein the processor is further configured to:
and selecting the cell corresponding to the minimum transmitting power as the resident cell of the terminal according to the transmitting power of the terminal.
19. The terminal of claim 15 or 17, wherein the processor is further configured to:
determining a ranking reference value of the cell according to the RSRP of the cell and a target adjustment value of the cell power;
and selecting the cell with the largest ranking reference value as the resident cell of the terminal according to the ranking reference value of the cell.
20. The terminal according to claim 13 or 17, wherein the processor is further configured to:
determining the transmitting power Pu of the terminal to a cell according to a first formula and a second formula; wherein the first formula is:
Pue＝min{Pcmax，(Ptarget+PL)}；
the second formula is:
PL＝Ptx-RSRP；
the Pu is the transmitting power of the terminal to the cell; pcmax is the transmission power of the terminal configured by the terminal, ptarget is the target receiving power of the cell, and PL is the path loss of the cell; ptx is the transmit power of the cell; and the RSRP is the RSRP of the cell.
21. A device for selecting a resident cell, applied to a terminal, includes:
the first acquisition module is used for acquiring power reference information of a cell and Reference Signal Received Power (RSRP) of the cell;
a selection module, configured to select a camped cell of the terminal according to the power reference information of the cell and RSRP of the cell;
the second acquisition module is used for acquiring the first power range;
the selection module comprises:
and the selection submodule is used for selecting the resident cell of the terminal according to the power reference information of the cell, the first power range and the RSRP of the cell.
22. A computer readable storage medium, having stored thereon a computer program, characterized in that the program, when being executed by a processor, carries out the steps of the method for selecting a camping cell according to any of the claims 1-10.
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| CN104904280A (en) * | 2013-03-27 | 2015-09-09 | 富士通株式会社 | Transmit power determining method and apparatus and communications system |
| KR20180070550A (en) * | 2015-10-23 | 2018-06-26 | 광동 오포 모바일 텔레커뮤니케이션즈 코포레이션 리미티드 | Method and apparatus for selecting a resident cell |
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