Remote Notification (Silent Push Notification) 관련 레퍼런스

Multitasking in iOS 7 : Background Fetch, Remote Notification, Background Transfer Service

http://meetkei.com/?p=2557

iOS Silent Push notifications 

http://hayageek.com/ios-silent-push-notifications/

*** Silent Push notification (Remote Notification) 구현방법

http://grandbig.github.io/blog/2014/02/22/silentremotenotification/

http://blog.naver.com/PostView.nhn?blogId=newyorkinms&logNo=220526394264

http://samwize.com/2015/08/07/how-to-handle-remote-notification-with-background-mode-enabled/

http://ash84.net/2013/10/15/ios-backgroundforeground-remotenotification--ea-b5-ac-eb-b3-84-ed-95-98-ea-b8-b0/

iOS 멀티태스킹 (Background Service 이용하는 법 : iOS7 이상)

http://maskkwon.tistory.com/192

iOS 7.1 관련 이슈

http://yoonjiman.net/tag/ios-7/