A.SRNS Context Request
B.Location Update Request
C.Update PDP Context Request
D.SGSN Context Request
A.MS发起的PDP Context去激活
B.SGSN发起的PDP Context去激活
C.PDN发起的PDP Context去激活
D.GGSN发起的PDP Context去激活过程
A.Initial context setup response
B.Initial context setup request
C.OSgnb addition request
D.Sgnb reconfiguation complete
A.Action research
B.Teaching journal
C.Lesson report
D.A case study
A.use pictures
B.make up sentences
C.memorize the spelling
D.guess meaning from context