1. A method, comprising:
obtaining a traffic characteristic of a user equipment (UE) in a wireless network based on one or more predefined UE conditions, wherein the traffic characteristic indicates regular traffic or low priority traffic;
sending or receiving a data transmission;
identifying a transmission procedure of the data transmission; and
performing a power consumption optimization for the transmission procedure when the traffic characteristic indicates low priority traffic.
2. The method of claim 1, wherein the predefined UE conditions comprise a transmission data size is smaller than a predefined threshold, a required bandwidth or throughput is small than a predefined threshold, an application ID indicating a predefined small-size data transmission, a data transmission triggered by an application, an access point name (APN) indicating small-size or low priority data transmission, a UE subscription information indicating the UE being an mobile originated (MO) only or mobile terminated (MT) only device, and a hardware status indicating power saving mode.
3. The method of claim 1, wherein the transmission procedure is sending or receiving the data transmission in a pre-scheduled period, and wherein the power consumption optimization involves aligning the data transmission with mobility management procedures by the UE or aligning the data transmission from multiple applications in the same period.
4. The method of claim 1, wherein the transmission procedure is sending or receiving the data transmission in a pre-scheduled period, and wherein the power consumption optimization comprises:
obtaining application properties of the data transmission;
determining a timer interval for the data transmission; and
switching off radio frequency (RF) capability after the data transmission until the next data transmission.
5. The method of claim 1, wherein the transmission procedure is sending or receiving the data transmission, and wherein the power consumption optimization involves reducing retry attempts of NAS procedures.
6. The method of claim 1, wherein obtaining the traffic characteristics involves receiving a configuration from the network indicating low priority traffic.
7. The method of claim 1, wherein obtaining the traffic characteristics involves retrieving a configuration information from a subscriber identity module (SIM) card indicating low priority traffic.
8. A method, comprising:
obtaining a traffic characteristic of a user device (UE) in a wireless network based on one or more predefined UE conditions, wherein the traffic characteristic indicates regular traffic or mobile originated (MO) only traffic;
sending or receiving a data transmission;
identifying a transmission procedure of the data transmission; and
performing a power consumption optimization for the transmission procedure when the traffic characteristic indicates MO only traffic.
9. The method of claim 8, wherein the predefined UE conditions comprise: all active applications generating MO only communication, receiving a broadcast information or an in-band signaling indicating the UE being an MO only device, obtaining a user configuration information indicating the UE being an MO only device, receiving an configuration via OTA indicating the UE being an MO only device, and obtaining a default subscription information in a SIM of the UE indicating the UE being an MO only device.
10. The method of claim 8, wherein the transmission procedure is an attach procedure, and wherein the power consumption optimization comprises:
performing the attach procedure right before the data transmission; and
performing a detach procedure right after the data transmission.
11. The method of claim 8, wherein the transmission procedure is sending an amount of data, and wherein the power consumption optimization involves switching off RF capability after sending the amount of data until a next sending data request.
12. The method of claim 8, wherein the transmission procedure is an attach procedure or a detach procedure, and wherein the power consumption optimization involves indicating attach-when-needed capability in NAS ATTACH REQUEST message or NAS DETACH REQUEST message.
13. The method of claim 8, wherein the transmission procedure is a detach procedure initiated by the wireless network without indicating reattach required, and wherein the power consumption optimization involves not reattempting an attach procedure.
14. The method of claim 8, wherein the transmission procedure is sending a predefined NAS message, and wherein the power consumption optimization involves indicating MO-service-only in an additional update information element (IE) or other fields of the NAS message.
15. The method of claim 8, wherein the transmission procedure is sending an attach-when-needed indication in an ATTACH REQUEST message and receiving an implicit detach supported indicator in an ATTACH ACCEPT message, and wherein the power consumption optimization involves performing a local detach procedure without exchanging detach signaling messages.
16. The method of claim 8, wherein the transmission procedure is sending an attach-when-needed indication in an ATTACH REQUEST message and receiving an implicit detach supported indicator and an implicit detach timer value in an ATTACH ACCEPT message, and wherein the power consumption optimization comprises:
starting an implicit detach timer upon RRC release completion; and
performing a local detach procedure without exchanging detach signaling messages upon the implicit detach timer expires.
17. A method, comprising:
receiving one or more predefined UE conditions from a user device (UE) in a wireless network;
determining a traffic characteristic of the UE based on the UE conditions, wherein the traffic characteristic indicates regular traffic, low priority traffic, or mobile originated (MO) only traffic; and
performing power consumption optimization based on the traffic characteristic.
18. The method of claim 17, wherein the traffic characteristic indicates low priority traffic, and wherein the predefined UE conditions comprise: a transmission data size is smaller than a predefined threshold, a required bandwidth or throughput is small than a predefined threshold, a data transmission triggered by an application, an application ID indicating a predefined small-size data transmission, an access point name (APN) indicating small-size or low priority data transmission, a UE subscription information indicating the UE being a mobile originated (MO) only or mobile terminated (MT) only device, and a hardware status indicating power saving mode.
19. The method of claim 18, wherein the power consumption optimization involves sending a configuration message to the UE indicating low priority traffic characteristic.
20. The method of claim 17, wherein the traffic characteristic indicates MO only traffic, wherein the UE condition is an attach-when-needed indication in an ATTACH REQUEST message, and wherein the power consumption optimization involves initiating an explicit network detach procedure.
21. The method of claim 17, wherein the traffic characteristic indicates MO only traffic, wherein the UE condition is an attach-when-needed indication in an ATTACH REQUEST message, and wherein the power consumption optimization comprises:
sending an implicit detach supported indicator in an ATTACH ACCEPT message; and
performing a local detach procedure without exchanging detach signaling messages.
22. The method of claim 17, the traffic characteristic indicates MO only traffic, wherein the UE condition is an attach-when-needed indication in an ATTACH REQUEST message, and wherein the power consumption optimization comprises:
sending an implicit detach supported indicator and an implicit detach timer value in an ATTACH ACCEPT message
starting an implicit detach timer upon RRC release completion; and
performing a local detach procedure without exchanging detach signaling messages upon the implicit detach timer expires.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A catalyst for producing methylamines, which comprises a crystalline silicoaluminophosphate molecular sieve, the molar ratio of silicon atom to aluminum atom being in the range of 0.01-0.30.
2. The catalyst for producing methylamines according to claim 1, wherein the molar ratio of silicon atom to aluminum atom is in the range of 0.05-0.25.
3. The catalyst for producing methylamines according to claim 1 or 2, wherein the average particle size of crystals of the crystalline silicoaluminophosphate molecular sieve is 5 m or less measured by a scanning electron microscope.
4. The catalyst for producing methylamines according to claim 1, wherein the crystalline silicoaluminophosphate molecular sieve has a cubic, rectangular parallelepipedic, spheroidal, hexagonal or prismatic form.
5. The catalyst for producing methylamines according to claim 1, wherein the crystalline silicoaluminophosphate molecular sieve is of H-type or of H-type in which a part of the H-type is replaced with at least one metal selected from Li, Na, Be, Mg, Ca, Sr, Y, Ti, Zr, V, Nb, Cr, Mn, Fe, Ru, Co, Rh, Ir, Ni, Pd, Pt, Cu, Zn, B, Ga, In, Ge, and Sn, or the crystalline silicoaluminophosphate molecular sieve contains the metal or an oxide of the metal.
6. The catalyst for producing methylamines according to claim 1, wherein the crystalline silicoaluminophosphate molecular sieve is SAPO-34 in which a part of the H-type is replaced with at least one metal selected from Ti, Y and Zr or which contains the metal or an oxide thereof.
7. The catalyst for producing methylamines according to claim 1, wherein the crystalline silicoaluminophosphate molecular sieve comprises at least one constituting component selected from SAPO-5, 11, 17, 18, 26, 31, 33, 34, 35, 42, 43, 44, 47 and 56.
8. A method for manufacturing a catalyst for producing methylamines which comprises mixing an aluminum compound, a phosphorus compound, a silicon compound, an amine or ammonium salt and water so that the molar ratio of them satisfies the following formula (1) in case the aluminum compound, the phosphorus compound and the silicon compound are expressed by Al2O3, P2O5 and SiO2, respectively, and then subjecting the mixture to a hydrothermal treatment:
Al2O3.(10.2)P2O5.(0.50.4)SiO2.(1.50.5)Am.(7525)H2O(1)
wherein Am denotes an amine or ammonium salt having 3 to 24 carbon atoms.
9. A method for manufacturing a catalyst for producing methylamines which comprises mixing an aluminum compound, a phosphorus compound, a silicon compound, an amine or ammonium salt and water with at least one metal andor a compound of the metal selected from Li, Na, Be, Mg, Ca, Sr, Y, Ti, zr, V, Nb, Cr, Mn, Fe, Ru, Co, Rh, Ir, Ni, Pd, Pt, Cu, Zn, B, Ga, In, Ge and Sn so that the molar ratio satisfies the following formula (1) in case the aluminum compound, the phosphorus compound and the silicon compound are expressed by Al2O3, P2O5 and SiO2, respectively, and then subjecting the mixture to a hydrothermal treatment: Al2O3.(10.2)P2O5.(0.50.45)SiO2.(1.50.5)Am.(7525)H2O(1)
wherein Am denotes an amine or ammonium salt having 3 to 24 carbon atoms.
10. A method for manufacturing a catalyst for producing methylamines according to claim 8 or 9, wherein pseudo-boehmite is used as the aluminum compound.
11. A method for producing methylamines which comprises allowing methanol to react with ammonia in the presence of the crystalline silicoaluminophosphate molecular sieve of claim 1.
12. A method for producing methylamines which comprises carrying out a disproportionation reaction of monomethylamine in the presence of the crystalline silicoaluminophosphate molecular sieve of claim 1.